阅读说明：本技术 用于路段引导装置的引导滑车、具有引导滑车的路段引导装置及获知引导滑车负载的方法 (Guide carriage for a track guide, track guide with a guide carriage and method for determining the load of a guide carriage ) 是由 C.延森 D.克兰佩尔特 L.京德特 S.昂斯莱贝尔 于 2020-01-22 设计创作，主要内容包括：本发明公开了一种用于在导轨上滚动支承引导的引导滑车,该引导滑车具有至少一个滑车滚道,能布置在引导滑车与导轨之间的滚动体可在该滑车滚道上滚动,其中,尤其为了获知在引导滑车上起作用的负载或磨损,给所述滑车滚道配属可由滚动体负载的、压力敏感的传感器装置,该传感器装置具有沿滚动方向分布布置的传感器,所述传感器可与分析装置信号连接以用于分析其传感器信号。此外公开了一种具有这种引导滑车的路段引导装置,以及一种用于获知引导滑车上的负载的方法。(The invention relates to a guide carriage for rolling-mounted guidance on a guide rail, comprising at least one carriage track on which rolling bodies that can be arranged between the guide carriage and the guide rail can roll, wherein, in particular for detecting loads or wear acting on the guide carriage, the carriage track is assigned a pressure-sensitive sensor device that can be loaded by the rolling bodies and that has sensors distributed in the rolling direction, which can be connected to an evaluation device for evaluating the sensor signals thereof. Furthermore, a track guide device having such a guide carriage is disclosed, as well as a method for determining the load on the guide carriage.)

1. Guide carriage for rolling-mounted guidance on a guide rail (2), having at least one carriage track (8) on which rolling bodies (6) that can be arranged between the guide carriage (4) and the guide rail (2) can roll, wherein, in particular for ascertaining loads (F, M) or wear that act on the guide carriage (4), the carriage track (8) is assigned a pressure-sensitive sensor device (A, B, C) that can be loaded by the rolling bodies (6) and that has sensors (22) distributed along the rolling direction (x) and that can be connected to an evaluation device (26) for evaluating their sensor signals (R)_i) Characterized in that the sensor device has at least one tuple (A, B, C) with sensors (22) in which sensors (A) following directly one after the other in the rolling direction (x)₁₁、A₁₂；A₁₂、A₁₃) Forming at least one sensor pair (A)₁、A₂) The sensor pairing is designed such that at least with the sensor pairing (A)₁、A₂) Eccentric load in the rolling direction (x), sensor signal (R) of the sensor pair_i) The interference parameter-related contributions (R (D, T)) of (a) are identical, in particular approximately identical, and the load-related contributions (R (F, M)) are different, in particular significantly different.

2. Guide block according to claim 1, with each sensor pair (A)₁、A₂) Sensor signal (R)_i) According to which said load (F, M) is known (40).

3. Guide trolley according to claim 2, wherein the first calculation (40) is or has each sensor pair (A)₁、A₂) Sensor signal (R)_i) Difference of (Δ R)_i）。

4. Guide block according to claim 3, having a difference (Δ R) for each tuple (A, B, C)_i) According to which the load (F, M) is known (50).

5. Guide block according to claim 2 and/or 4, having a third calculation (60) from which the load (F, M) is known from the result of the first calculation (40) and/or the second calculation (50) of each raceway (8).

6. Guide trolley according to any of the previous claims, having an analysis device (26) in signal connection with the sensor (22).

7. Guide trolley according to claim 6, when dependent on claim 2, 4 or 5, wherein in the analysis means (26) at least the first calculation (40) or the calculations (40, 50, 60, 80) are stored and/or connected for implementation.

8. Guide trolley according to any of the previous claims, wherein a corresponding sensor pair (A)₁、A₂) Is designed such that its extent (L) in the rolling direction (x) is matched to the diameter of the rolling elements.

9. The guide block of claim 8, wherein the extension (L) is less than or equal to the rolling body diameter.

10. Track guide, in particular linear guide (1), having an extended guide (2) and a guide carriage (4) mounted thereon and movable in the direction of extension (x), which is designed according to one of the preceding claims, and rolling bodies (6) arranged between rolling track pairs (8, 10) of the two components (2, 4).

11. Method for determining a load (F, M) of a guide carriage (4) of a route guide (1) designed according to claim 10, characterized in that the determination of the load (F, M) comprises at least one step:

- "for directly successive sensors (A)₁₁/A₁₂、A₁₂/A₁₃) Each sensor pair of (A)₁、A₂) Sensor signal (R)_i) The first calculation (40) "is performed.

12. The method of claim 11, wherein the learning of the load (F, M) has the steps of:

-performing a second calculation (50) on the result of the first calculation (40) for each tuple (A, B, C).

13. The method of claim 11 or 12, wherein the learning of the load (F, M) has the steps of:

-performing a third calculation (60) of the result of the first calculation and/or of the second calculation for each raceway (8).

14. The method of any of claims 11 to 13, wherein learning the load (F, M) has the steps of:

-learning (70) the load distribution of each raceway (8).

15. The method of any of claims 11 to 14, wherein the learning of the load (F, M) has the steps of:

- "learning (80) a load vector from the load distribution".

Technical Field

The invention relates to a guide block according to the preamble of claim 1, a route guide according to claim 10 and a method for determining the load of a guide block according to claim 11.

Background

The path guidance device, in particular the linear guidance device, makes possible a translatory, guided movement. For this purpose, they have mostly stationary guide rails or stationary guide profiles, on which the guide carriages are supported by the rolling bodies.

DE 102016210109 a1 by the applicant discloses a guide carriage for a linear rolling bearing or a linear guide, which has a sensor layer arranged on a running rail lining, by means of which the load on the guide carriage can be measured, which is designed such that piezoresistive film sensors are arranged on a steel lining of the rolling bearing, it is proposed here, for example, to use nickel-containing, diamond-like hydrocarbon Ni-D L C or doped silicon as the material.

The used D L C sensor layers have a high temperature sensitivity, which is the subject matter of document DE 10253178B 4, for example, in order to obtain a measurement of the effective force, temperature influences must be compensated for.

Document DE 10243095D 4 shows a rolling bearing with an integrated piezoresistive sensing device. In this case, a piezoresistive intermediate layer is inserted between the half-shell segments of the carrier element, which intermediate layer is in contact with the electrodes point by point. The locally measured cross-section of the corresponding piezoresistive sensor element is confirmed by the cross-section of the electrode. By spacing the electrodes along the raceway, the raceway load can be measured at multiple points.

At least in order to compensate for the temperature effects, solutions are known from the prior art in which sensors that cannot be loaded by the rolling elements are placed outside the raceways as a reference, so that the temperature effects can be calculated therefrom.

Disclosure of Invention

In contrast, the object of the present invention is to provide a guide carriage for a linear rolling bearing and a linear rolling bearing having a guide carriage, which are designed such that compensation for disturbance variables is achieved with little technical effort when measuring the load of the guide carriage. The object of the invention is also to provide a method for determining the load on the guide carriage using such a compensation.

The first task is solved by a guide trolley with the features of claim 1, the second task by a track guide or a linear rolling bearing with the features according to claim 10, and the third task by a method with the features of claim 11.

Corresponding inventive developments are disclosed in the corresponding dependent claims.

A guide carriage for the rolling-supported guidance, in particular for the design of linear rolling bearings, on a guide rail has at least one carriage track on which rolling bodies, which can be arranged between the guide carriage and the guide rail, can roll. In particular, in order to detect the loads or wear acting on the guide carriage, pressure-sensitive sensor devices that can be loaded by the rolling elements are associated with the carriage raceways and have sensors distributed in the rolling direction. In order to evaluate the respective sensor signals thereof and thus to detect load or wear, the sensors are connected to the evaluation device by signals or are connected to signals. According to the invention, the sensor device has at least one tuple (Tupel) consisting of at least two, preferably three sensors. From these sensors, the sensors directly following one another in the rolling direction each form a sensor pairing. Thus, there is a sensor pair in the case of two sensors and two in the case of three sensors. According to the invention, the respective sensor pairs are designed such that, at least in the case of loads whose eccentricity is in the rolling direction, the load-related portions of their sensor signals are identical, in particular approximately identical, and the load-related portions of these signals are different, in particular significantly different.

The guide carriage is designed in such a way that the proportion relating to the disturbance variable can be eliminated most simply by a pairing operation or calculation (verrechung) of the sensor signals, since the difference can be zero or almost zero. The load to be determined can therefore be determined from the result of this operation or calculation without additional devices or apparatuses for compensating for the influence of the disturbance variable.

Preferably, the corresponding sensor pairs are designed such that the difference in the contributions related to the disturbance variable is smaller in magnitude than the difference in the contributions related to the load.

This embodiment of the sensor pairing is preferably realized by dimensioning the sensors and their arrangement with one another, in particular in the rolling direction.

Preferably, the extent of the sensors of the sensor pair and their spacing from one another in the rolling direction are dimensioned such that the load of the individual rolling bodies on these sensors is significantly different.

The load may be a force and/or a moment acting on the guide trolley. The speed, acceleration of the guide carriage and/or pitting of the carriage, rolling or rail tracks can also be determined from the sensor signals. The disturbance variable may be the influence of the deformation or temperature of the guide carriage or the carriage track.

The guide carriage is preferably designed such that it has a body on which a raceway insert is arranged, which raceway insert has a carriage raceway. In particular, the raceway lining is arranged on the body in a material-locking and/or form-locking and/or friction-locking and/or force-locking manner.

Preferably, the guide carriage has a plurality of carriage raceways, in particular four carriage raceways, which are equipped with the sensor device according to the invention. The carriage raceways are preferably combined on the inner side on the guide carriage into two raceway pairs, which are arranged opposite one another. The raceways of the corresponding raceway pairs are preferably adjusted relative to one another (angeltellt).

In a refinement, a first calculation of the sensor signal for each sensor pair is provided, from which the load is determined.

In a particularly preferred development, the first calculation is a difference or a difference formation of the sensor signals of each sensor pair, or at least has the difference or the difference formation. Since the contribution of the sensor signal related to the disturbance variable is identical or approximately identical, it disappears to zero or approximately to zero. In other words, the influence of the disturbance variable can be eliminated in this way.

In order to determine the position of the rolling bodies relative to the sensors, which is essentially necessary for determining the forces acting on the guide carriage as a whole, at least three sensors are provided in the tuple and at least two sensor pairs are provided in each case. Accordingly, the first calculation also has at least two differences as a result. In a refinement, a second calculation of the difference for each tuple is therefore provided, from which the load can be determined.

In a refinement, a third calculation of the result of the first calculation and/or of the second calculation for each track is provided, from which the load can be determined.

Preferably, the guide carriage has an evaluation device and the sensor is connected to the evaluation device for evaluating its sensor signal.

In a refinement, at least the first calculation or the calculations are stored and/or connected for implementation in the evaluation device.

For estimating the load, an extended kalman filter (kalman filter) based on the first, second and/or third calculation is preferably stored and/or connected in the evaluation device for implementation.

In particular, the corresponding sensor pairing is preferably designed such that its extent in the rolling direction is matched to the rolling body diameter. The extension length is in particular less than or equal to the rolling element diameter.

In particular in the case of a development with three sensors in a group, the extension of the respective sensor pair in the rolling direction is preferably dimensioned such that the distance between the center points of the sensors located outermost in the rolling direction of the three sensors is smaller than the rolling element diameter.

The pressure-sensitive sensor device, in particular the corresponding sensor, is preferably designed to be piezoresistive or piezoelectric.

In this case, the sensors each have an electrode, by which a piezoresistive layer, which can be loaded by the rolling elements, is contacted. The individual extent of the corresponding sensor in the rolling direction is determined by the diameter of its electrode in this direction. Preferably, the sensors are identical to each other, in particular their electrodes have the same cross section.

The respective electrodes can be assigned to a piezoresistive layer individually, or a plurality of or all electrodes can be jointly contacted by a piezoresistive layer. The piezoresistive layer preferably extends in the rolling direction at least along the sensor device of the corresponding track.

In order to additionally compensate for the slight, but possibly also present, influence of the variable temperature on the knowledge according to the invention, in a further development a sensor is provided which is arranged next to the raceway and is therefore not subject to rolling element loading, and whose sensor signal can be calculated by the evaluation device.

The track guide, in particular a linear guide or a linear rolling bearing, has an extended guide, in particular a guide rail, and a guide carriage supported thereon and movable in the extension direction, which is designed according to at least one aspect of the preceding description. In particular, four raceway pairs are formed from the pulley raceways and the guide raceways of the guide device, wherein rolling bodies are rollably arranged between each pulley raceway and the guide raceway.

The method for determining the load of a guide carriage of a track guidance device, which is designed according to the above description, has the step "first calculating the sensor signals of a sensor pair consisting of sensors that follow directly one after the other in the rolling direction", according to the invention. The first calculation is used in particular to determine the difference in sensor signals and thus the load force of each sensor pair.

In a refinement, the method for learning the load has the step "second calculation of the result of the first calculation per tuple". Thus, in particular the load force per tuple can be known.

In a refinement, the method for determining the load has the step "third calculation of the result of the first calculation and/or of the second calculation for each raceway". This may be followed by the step "learning the load profile of each raceway".

In a further development of the method, the load is determined by the step "determining a load vector, in particular a force vector and/or a moment vector, from a load distribution".

Drawings

In the figures, an exemplary embodiment of a track guide device according to the invention or of a guide carriage according to the invention and of a method according to the invention is shown. The invention will now be explained on the basis of the figures of these drawings.

Wherein:

figure 1 shows an embodiment of a track guide with a guide rail and a guide carriage which is mounted in a rolling manner on the guide rail,

figure 2 shows the route guidance according to figure 1 in cross section,

figure 3 shows a detail of the route guidance according to figure 2 in the region of the rolling bearing,

figure 4 shows the raceway with sensor device of the route guidance device according to the previous figures in a top view,

figure 5 shows a graphical representation of the sensor signal and its calculations relating to the deformation of the raceway,

figure 6 shows a graphical representation of the sensor signal and its temperature dependent calculation,

fig. 7 shows a method for determining the load of the guide carriage, and

fig. 8 shows a variant (Meta-Verfahren) for monitoring a route guidance device in dependence on sensor signals of a sensor device designed according to the invention.

Detailed Description

According to fig. 1, the route guide 1 has a guide 2 designed as a rail, on which a guide carriage 4 is mounted in a rolling manner. The direction of extension and thus the direction of guidance and the direction of rolling are denoted by x, the height axis of the guide carriage 4 by z and its transverse axis by y. The guide carriage 4 is guided on the guide device 2 so as to be linearly movable. As loads acting on the guide carriage 4, for example, a force F and a moment M are provided.

Fig. 2 shows a section of the route guide 1 according to fig. 1, which section is guided in the y-z plane. According to fig. 2, the guide carriage 4 has four rows of rolling elements 6 which are not surrounded by an end and are formed in the form of rollers in the present exemplary embodiment. Different shapes of the rolling bodies, such as spheres, and other numbers of rows are of course possible. The rolling bodies 6 roll on the carriage raceways 8 on the guide carriage side and on the rail raceways 10 on the guide device side or the guide rail side, transmitting the load. The guide means 2 extend with a constant outer cross section in the x-direction. The guide means are preferably made of steel and hardened at least in the region of the rail 10.

The corresponding carriage track 8 is formed by the surface of a track pad 12 facing the guide device 2, which is adhesively bonded on the rear side to the body 5 of the guide carriage 4. Alternatively, a force-locking/friction-locking and/or form-locking arrangement of them on the body 5 is possible. The pulley raceway 8 can of course also be formed integrally with the body 5. The route guide 1 is largely constructed in accordance with the teaching of document EP 2110571B 1.

Fig. 3 shows a detail of the cross section according to fig. 2 in the rolling contact region of the guide carriage 4 on the guide device 2, i.e. the rolling bodies 6, the base body 14 of the raceway insert 12 has a rear-side bearing surface 16, which is coated with a piezoresistive layer 18 made of amorphous hydrocarbon, in particular D L C (diamond-like carbon), the thickness of the layer 18 is, for example, 6 μm, wherein the layer is shown greatly exaggerated in fig. 2 for the sake of clarity, the electrodes 20 contact the layer 18, each of the electrodes 20, in combination with the cross section of the piezoresistive layer 18 contacted by it, shown in dashed lines, thus form a piezoresistive sensor 22, the entire layered structure of the raceway insert being covered by an electrically insulating coating 24.

Fig. 4 shows the arrangement of the electrodes 20 along the pulley raceway 12. Here, it is chosen to see a top view (see directional arrow, fig. 3 bottom right) on the piezoresistive layer 18 contacted by the electrode 20, wherein the illustration of the body 5 and the cover layer 24 is omitted.

The arrangement and the geometric cross section of the electrodes 20 determine the arrangement and the geometric cross section of the sensors 22 of the raceway arrangement 12 or of the carriage raceway 8 according to fig. 3. According to the invention, the electrodes 20 are summarized as 3-tuple A, B, C identical to each other. The 3-tuples A, B, C have a distance D between each other. Within the corresponding 3-tuple A, B, C, two directly successive sensors 22 or electrodes 20 are of identical design and are arranged at a distance a from one another, which is shown greatly exaggerated in fig. 4.

The route guidance device 1 according to fig. 4 furthermore has an evaluation device 26, in particular arranged on the guide carriage 4, in particular in the vicinity of the sensors, with the respective sensor 22 being connected to the evaluation device 26 in a signal-transmitting manner. The signal connections are indicated schematically by dashed signal lines.

In the evaluation device 26, the sensors 22 of the tuples A, B, C are connected to form a sensor pair a_i、B_i、C_iThe sensors of which are arranged in each case directly one after the other in the x direction. Thus, for tuple A, for example, a sensor pair A is generated₁And A₂. For clarity, sensor pairing B is omitted from FIG. 4_i、C_iThe marking of (2).

In this case, the sensor pair A_i、B_i、C_iSuch as pairing A_iHaving a corresponding extent L in the rolling direction x and a corresponding spacing a of their two sensors 22, these two geometric variables L, a are adapted to the diameter of the rolling bodies 6 in such a way thatIn the case shown (three sensors 22 per tuple A, B, C), all three center points of the sensors 22 are located between the linear contact of two adjacent rolling elements 6 with their raceways 8, on which they roll. The two rolling bodies 6 have a distance between each other of their rolling body diameters.

The sensor signal R of the sensor 22, which is generated by the vertical force action of the rolling elements 6, varies very strongly with the position of the rolling elements 6 in the rolling direction x. If, for example, the sensor pair a1 according to fig. 4 is eccentrically loaded by the rolling elements 6, for example, when the linear contact is located directly perpendicular with the smallest x coordinate, denoted by a₁₁Above the midpoint of the sensor 22 of (a), then the sensor pair a1 (i.e., its sensor a)₁₁、A₁₂) The load-dependent contribution of the sensor signals of (a) is significantly different, i.e. the difference is significant.

The contributions of the sensor signal caused by the disturbance variables deformation D and temperature T then appear different. Sensor pairing A₁Sensor A of₁₁、A₁₂The characteristic curves associated therewith are shown in fig. 5 and 6. Based on sensor A₁₁、A₁₂Is very small and is based on the sensor pairing a₁Extension L corresponding to the diameter of the rolling body, sensor 22 (A) associated with the sensor₁₁、A₁₂) The upper effective temperature T and the deformation D are respectively approximately equal. Thus, the sensor 22 (A) is identically designed₁₁、A₁₂) The characteristic curves R (T), R (D) of the sensor signal(s) in relation to the disturbance variable(s) provide approximately the same sensor signal R (A)₁₁，D)、R(A₁₂，D)、R(A₁₁，T)、R(A₁₂T). Then, their computation in a pairing manner, in particular difference formation, provides approximately constant difference signals Δ r (d), Δ r (t), respectively.

Based on the paired, in particular tuple-wise, dimensioned and spaced-apart sensors 22 according to the invention and by means of the paired calculation of the sensor signals of directly adjacent sensors 22, the influence of the disturbance variable D, T can thus be reduced, since the difference signals Δ r (d), Δ r (t) of the disturbance variables are approximately constant as a function of the corresponding disturbance variable D, T. Additional temperature compensation can be achieved by means of sensors 23 arranged outside the layer 18 in the region of the raceway 8 that cannot be loaded by the rolling elements.

Sensor signal R of sensor 22_iCan be considered in a first approximation as a linear dependence on the acting load F, M. The rolling bodies 6 move on the respective sensor 22 and have a distance here which corresponds approximately to the rolling body diameter of the rolling bodies, in particular slightly larger than this. This therefore results in the length of the rolling element revolution being slightly greater than the sum of the rolling element diameters, as a result of which cavities are created in the rolling element revolution, as a result of which the spacing between the individual rolling elements 6 is adjusted as a function of the installation situation and the load. Generating a periodic sensor signal R at the sensor 22_i. The position P of the rolling body 6 is then completely described by the respective smallest absolute distance between the rolling body center and the corresponding sensor center, and is therefore always between the negative and the positive rolling body radii. As already mentioned, the corresponding sensor signal R_iStrongly depends on the temperature T, which is an interference parameter. Thus, a sensor signal R is derived for each sensor 22 of the tuple A, B, C_iThe sensor signal depends on the temperature T, the position P of the rolling body 6, the stress sigma related to the deformation_xAnd σ_zAnd stress sigma related to load_y。

In the method according to fig. 7a to 7f, therefore, the step "detect sensor signal R of sensor 22 of tuple A, B, C" is first carried out_i(T, P, σ x, σ y, σ z) "30. In a subsequent step "first calculation" 40, the difference signals of the sensor signals are formed in a matched-pair manner according to the preceding description, so that the influence T, σ dependent on the disturbance variable is generated_xAnd σ_z(deformation D) disappeared. In step "second calculation" 50, the difference of the results of first calculation 40 is formed, so that for a tuple A, B, C with at least three sensors 22, the position P of rolling element 6 is known. In step "third calculation" 60, the corresponding force F is known for the tuple A, B, C_A、F_B、F_CAnd in step 70 is established in relation to the scrolling direction xLoad distribution f (x). When the method is carried out for all carriage raceways 8 according to fig. 2, the force and moment distribution about the main axes x, y, z of the guide carriage 4 according to fig. 7f can be established from the load distribution according to fig. 7 e. This is done in step 80.

The preceding description relates to the knowledge of the load of the guide carriage, for example in the sense of load vectors, in particular force vectors and/or moment vectors. Fig. 8 shows a variant in which the previously described method is embedded, wherein the variant is also based on the dimensioning and design of a sensor tuple of the sensor arrangement according to the invention, consisting of closely spaced sensors and sensor pairs.

The current resistance value of the force sensor 22 is determined by electronics in the vicinity of the sensor, the one or more multiplexers upstream of the AD converter or themselves switch the sensor to be detected next to the AD converter, the digital data of which are captured by a signal processing module, which also contains the possibility of verifying the calibration of the sensor 22 from the adjusted prestress as a function of the reference travel of the guide carriage 4 on the rail 2, additionally, this module contains a function block which scans the digital raw signal for possible pitting (pitching), which takes place before the signal is filtered over time in order to detect the possibly very short but very large signal pulses as a result of rolling (ü berroll) particles and chipping (Ausbr ü che).

The "model based feature extraction (modellbasis merkmelsexake)" module contains a physical model representing the relationship between the sensor signals and the parameters to be determined (force, moment, temperature and prestress). The variables of the model to be determined form a state in their entirety. The state is specified, for example, by a digital particle filter. The digital particle filter contains an estimate of the current state of the system, predicts future states and corrects the prediction with each next set of sensor data. This allows not only the combination of measurement data from different individual sensors 22 of a data set, but also the consideration of results from previous measurement data sets. Therefore, all information from the existing data is used in order to improve the accuracy of the complex state model. In the case of an isolated observation of the individual sensors 22, the accuracy is limited, for example, by the very high necessary accuracy of the noise and temperature compensation.

The model for feature extraction also takes into account external influences, such as ambient temperature, when operating. Also at this point additional external sensors, such as acceleration sensors, gyroscope data, temperature, etc., can be processed to better understand the surroundings of the guide carriage 4.

After adaptive signal processing and feature extraction, the following parametric features exist: pitting or rolling and chipping of particles occurs based on the wear phenomenon; conclusions about the presence of a lubricating film between the pulleys, rolling elements and rails; a force acting on the sled; a moment acting on the tackle; the temperature of the sled; pre-stressing of the tackle; acceleration of the sled; the speed of the trolley. These parameters and characteristics are further used by the following modules: estimating the service life; monitoring and monitoring process parameters in real time; general diagnosis. The lifetime estimation is based on recorded and stored historical load values in the vicinity of the sensor in combination with pitting detection and determination of the prestress. From these parameters, the remaining life is estimated assuming that the trolley will experience the same average load in the future as in the past. The real-time monitoring module reports all important parameters, which may be, for example, machine controllers, cloud applications or other types of devices, to the communication partners of the sensing device. Here, parameters to be transmitted may be configured. The generic diagnostic module monitors the proper operation of the guide carriage. In this case, the following parameters are checked for the parameters according to the specification: temperature, load, torque, acceleration, speed, rail or guide block misassembly. Based on the data for the detection of the lubricating film and the current acceleration and speed, the slip detection module draws conclusions about possible slipping of the rolling elements. These data may also affect lifetime calculations together.

Disclosed is a guide carriage for rolling-mounted guidance on a rail of a linear guide, comprising a raceway, to which pressure-sensitive sensors that can be loaded by rolling bodies are assigned, each having a sensor signal, which sensors are designed in a pairing-type manner and are closely spaced in the rolling direction, such that a difference signal of the sensor signals that can be detected in the pairing-type manner is, although significantly dependent on the load, independent or at least approximately independent of disturbance variables, such as deformation or temperature of the guide carriage.

Furthermore, a track guidance device with a guide carriage and a method for detecting a load are disclosed, which are based on the difference formation of the sensor signals in order to eliminate the influence of disturbance variables.

List of reference numerals

1 road section guiding device

2 guide device

4 guide pulley

5 guide pulley body

6 rolling element

8 pulley raceway

10-rail roller way

12 raceway liner

14 raceway liner base

16 support surface

18 piezoresistive layer

20 electrodes

22 loadable sensor

23 non-loadable sensor

24 coating

26 analysis device

30 detected sensor signal

40 first calculation

50 second calculation

60 third calculation

70 learned load distribution

80 learned load vector

x direction of scrolling and direction of guiding

L extension of sensor pair

a spacing of directly adjacent sensors

A. B, C sensor tuple

A₁1 st sensor pairing of tuple A

A₂Tuple A's 2 nd sensor pairing

A₁₁1 st sensor of 1 st sensor pair

A₁₂1 st sensor of the 2 nd/2 nd sensor pair of the 1 st sensor pair

A₂₂2 nd sensor of 2 nd sensor pair

F load force

M load moment

D disturbance parametric deformation

Temperature of T disturbance parameter

R_iSensor signal

Δ R sensor signal difference.