阅读说明：本技术 用于确定致动器、尤其离合器致动器的围绕旋转轴线旋转的构件的绝对位置的方法和装置 (Method and apparatus for determining the absolute position of the component around rotation axis rotation of actuator, especially clutch actuator ) 是由 马库斯·迪特里希 于 2018-04-05 设计创作，主要内容包括：本发明涉及一种用于确定致动器、尤其离合器致动器的围绕旋转轴线旋转的构件的绝对位置的方法,其中,该构件具有一起旋转的磁元件(18)且借助与磁元件(18)相对置的多圈传感器(16)确定磁元件(18)的绝对位置,多圈传感器被供给电压。在可在没有大的结构消耗情况下确定绝对位置的方法中,通过韦根线单元(19)监控磁元件(18)的位置,韦根线单元探测构件在致动器(3、12、13)切断时的运动且在探测到运动时将电压脉冲传递给用于测量构件当前位置的多圈传感器(16)。(The present invention relates to a kind of methods for determining the absolute position of the component around rotation axis rotation of actuator, especially clutch actuator, wherein, the absolute position that the component has the magnetic cell (18) rotated together and determines magnetic cell (18) by the multi-turn sensor (16) opposite with magnetic cell (18), multi-turn sensor are supplied to voltage.In the method that can determine absolute position under not big structure Expenditure Levels, by the position of wiegand wire unit (19) monitoring magnetic cell (18), movement of the wiegand wire unit detection component when actuator (3,12,13) are cut off and voltage pulse is passed to when detecting movement it is used to measure the multi-turn sensor (16) of component current location.)

1. the side of the absolute position of the component around rotation axis rotation for determining actuator, especially clutch actuator Method, wherein the component has the magnetic cell (18) rotated together and passes by with the opposite multi-turn of the magnetic cell (18) Sensor (16) determines the absolute position of the magnetic cell (18), and the multi-turn sensor is supplied to voltage, which is characterized in that passes through Wiegand wire unit (19) monitors the position of the magnetic cell (18), and the wiegand wire unit detects the component in the actuator (3,12,13) movement when cutting off, and voltage pulse passes to when detecting movement to be used to measure the component current The multi-turn sensor (16) of position.

2. the method according to claim 1, wherein the actuator (3,12,13) disconnect in the case where, by Battery is multi-turn sensor (16) service voltage.

3. method according to claim 1 or 2, which is characterized in that the multi-turn sensor (16) passes through institute receiving The voltage pulse for stating wiegand wire unit (19) transmission is transitioned into operating status from preparation operating status later.

4. method according to claim 1,2 or 3, which is characterized in that the multi-turn sensor (16) passes through receiving The current location for measuring and storing the component after the voltage pulse of wiegand wire unit (19) transmission, then occupies again The preparation operating status.

5. the method according at least one of preceding claims, which is characterized in that in the position of the magnetic cell (18) When changing at least 180 °, the voltage pulse is triggered by the wiegand wire unit (19).

6. the method according at least one of preceding claims, which is characterized in that connect the actuator (2,12, It 13) is multi-turn sensor (16) service voltage by the power supply of controller (15), and pass through the multi-turn sensor (16) when Determine the angle of the component and/or the revolution of the component.

7. the dress of the absolute position of the component around rotation axis rotation for determining actuator, especially clutch actuator It sets, described device has the multi-turn sensor (16) for determining the absolute position of the component including magnetic cell (18), the magnetic Element follows the rotary motion of the component, which is characterized in that in order to monitor the position of the magnetic cell (18), for the magnetic member Part is equipped with wiegand wire unit (19), the sensing of the wiegand wire unit and the multi-turn sensor (16) under preparation operating status Device electronic equipment (17) arouses interface (21) connection, so that the multi-turn sensor (16) is transitioned into fortune will pass through voltage pulse In row state.

8. device according to claim 7, which is characterized in that the multi-turn sensor in the preparation operating status (16) with cell voltage (U_Batt) connection.

9. device according to claim 7 or 8, which is characterized in that the multi-turn sensor (16) under operation with The power supply of controller (15) connects.

Technical field

The present invention relates to a kind of for determining the component around rotation axis rotation of actuator, especially clutch actuator Absolute position method, wherein the component has the magnetic cell that rotates together and passes by the multi-turn opposite with magnetic cell Sensor determines the absolute position of magnetic cell, and multi-turn sensor is supplied to voltage.

Background technique

In clutch actuation system in a motor vehicle, especially in electric hydraulic clutch actuation system, by whole The piston of motor drive active cylinder is flowed, motor is manipulated by controller.The piston of active cylinder is based on its position for hydraulic fluid Body is delivered to slave cylinder by fluid pressure line, and slave cylinder equally has the piston adjusted by hydraulic fluid, thus applies power Onto clutch, therefore the position of clutch changes.

In order to correctly manipulate motor and therefore set correct clutch position, it is necessary to accurate detection commutating motor The Angle Position of rotor.Such as from the case number of applicant be DE 10 2,016 212 173.1 undocumented patent application it is found that By the Angle Position or revolution of multi-turn sensor monitoring rotor.In this case, this multi-turn sensor is directly connected to control On the power supply of device processed, constantly to detect the revolution of magnet.In order to which lasting monitoring needs follow current.If multi-turn sensor Sample rate it is excessively high, need very high current drain.If sample rate is too low, the revolution of rotor may be omitted.

Summary of the invention

Therefore it is an object of the present invention to provide the methods for the absolute position for determining the rotating member of actuator, at this Simple, firm and cost advantages multi-turn sensors can be used in method.

According to the present invention, which is accomplished by the following way, and passes through the position of wiegand wire unit monitors magnetic cell, Wiegand Movement of the line unit detection component when actuator is cut off, and voltage pulse is passed to when detecting movement and is used to measure this The multi-turn sensor of component current location.In this case, it when actuator is cut off, can reliably be detected by wiegand wire unit The passively movement of actuator.Multi-turn sensor arouses by voltage pulse and measures the position of the variation of rotating member.But It is because actuator seldom passively moves, the total current drain of multi-turn sensor is very low, so as to use multi-turn sensor Very power saving and cost advantages variant schemes.

It advantageously, is multi-turn sensor service voltage by battery in the case where actuator disconnects.Due to independently of passing through The power supply of controller, it is ensured that equal function is good at any time for multi-turn sensor to be aroused, thus even if in actuator quilt The variation of the position of rotating member can also be measured when dynamic operation at any time.Because this short-term measurement only consumes seldom energy, So battery load is very low.

In a kind of design scheme, multi-turn sensor after receiving the voltage pulse transmitted by wiegand wire unit from Prepare operating status and is transitioned into operating status.Therefore the battery for passing through multi-turn sensor is thus only reduced with the of short duration connection of battery Load.

In a variant, multi-turn sensor is surveyed after receiving the voltage pulse transmitted by wiegand wire unit The current location of amount and means of storage, is then transitioned into preparation operating status again.Thus multi-turn sensor is only for example needing It wants to be energized during of short duration measurement and storing process.

In one embodiment, it is only just touched by wiegand wire unit at least 180 ° of the position change of magnetic cell Send out voltage pulse.Therefore, only multi-turn sensor is just made to enter measuring state in the Angle Position variation of magnetic cell.

It in one embodiment, is multi-turn sensor service voltage by the power supply of controller when connecting actuator, and The angle of component and/or the revolution of component are determined by multi-turn sensor.Therefore, free position of the multi-turn sensor in actuator The position of rotating member can be reliably measured down, therefore controller reporting is rotated immediately when connecting normal operating status The current location of component.

Improvement project of the invention relates to determining actuator, the rotation axis that surrounds of especially clutch actuator rotates Component absolute position device, the device have for determine include magnetic cell component absolute position multi-turn sensing Device, magnetic cell follow the rotary motion of component.The multi-turn sensor and however of cost advantages can be used in the apparatus It ensures the reliably monitoring to the Angle Position of rotating member, in the apparatus in order to monitor the position of magnetic cell, matches for magnetic cell Standby wiegand wire unit, magnetic cell arouse interface in the sensor electronics for preparing the multi-turn sensor under operating status Connection, is transitioned into multi-turn sensor in operating status will pass through voltage pulse.This has the advantage of control restarting It is always the current location that controller sends actuator, therefore the corresponding rectification of motor can be carried out immediately when device processed.

Advantageously, it is connect in the multi-turn sensor prepared in operating status with battery.Therefore, multi-turn sensor is any Moment is and therefore unrelated with the power supply of controller all in preparing operating status.

In one embodiment, multi-turn sensor is connect with the power supply of controller under operation.Therefore in multi-turn Battery is protected under sensor usually movable normal operating status.

Detailed description of the invention

The present invention includes numerous embodiments.One of them is elaborated according to the diagram being shown in the accompanying drawings.

There is shown with:

Fig. 1 shows the schematic illustration of the clutch actuation system of the friction clutch for operation automation,

Fig. 2 shows the embodiments of the apparatus according to the invention.

Specific embodiment

The clutch actuation system 1 of the clutch for automation is simplifiedly shown in Fig. 1.Clutch actuation system 1 is assigned to friction clutch 2 in the driving system of motor vehicle, and clutch actuation system 1 includes active cylinder 3, active cylinder It is connect via the fluid pressure line 4 of referred to as pressure piping with slave cylinder 5.Relay piston 6 can move back and forth in slave cylinder 5, driven Piston actuating friction clutch 2 in the case where centre is connected with bearing 8 via operating element 7.

Active cylinder 3 can be connect via connector with equalizing reservoir 9.Active piston 10 is supported on actively in which may be axially movable In cylinder 3.The piston rod 11 of active cylinder 3 is coupled via screw rod 12 with the servo drive 13 of motor-type.Motor-type is watched Taking driving device 13 includes the motor 14 and controller 15 for being configured to commutating motor.Screw rod 12 transports the rotation of motor 14 Turn becomes the longitudinal movement of the active piston 10 of active cylinder 3.Therefore, pass through motor 14, screw rod 12, active cylinder 3 and driven Automatically actuating friction clutch 2 of cylinder 5.

Because motor 14 is the dc motor of rectifier type, it is therefore desirable to identify its absolute position to adjust motor 14 Position.Absolute position is detected by multi-turn sensor 16.Multi-turn sensor 16 under its normal operating status with controller 15 connect and pass through its power supply power supply.Multi-turn sensor 16 is the component part of chip 17, as shown in FIG. 2.Chip 17 is such as This arrangement, so that multi-turn sensor 16 is opposite with the rotor of motor 14.In Fig. 2, in order to clearly illustrate only motor 14 magnetic cell 18, magnetic cell are securely fixed on the end face of the rotor of motor 14 and follow the rotary motion of rotor.In In this case, magnetic cell 18 is monitored by opposite wiegand wire unit 19, and wiegand wire unit is passed via conducting wire 20 and multi-turn The chip 17 of sensor 16 arouses the connection of interface 21.In addition, the chip 17 of multi-turn sensor 16 and cell voltage U_BattCoupling.

When actuator 3,12,13 operates normally, chip 17 is located on the power supply of controller 15 and determines magnetic cell 18 Angle, and turns counting in this case.The revolution is needed so that the rectification of motor 14 is correctly arranged.

But it if cutting actuator 3,12,13, also cuts off controller 15 and supply controller 15 at this time and multi-turn passes The power supply of sensor 16.

In this case, multi-turn sensor 16, which is in, prepares in operating status, prepares operating status and passes through cell voltage U_BattIt maintains.Under the dissengaged positions of actuator 3,12,13, the position of the rotor of motor 14 can passively change.This In the case of, the angle change of magnetic cell 18 is detected by wiegand wire unit 19.Wiegand wire unit 19 is that have as primary structure The sensor of the wiegand wire of element, wiegand wire have due to parallel soft magnetism and hard magnetic region including significant transition point B-H loop, transition point is as known to Wiegand effect.Caused by change in location by the magnetic cell 18 of the rotor of motor 14 Unexpected magnetization variation causes voltage pulse in the coil close to wiegand wire.Voltage pulse passes to chip via conducting wire 20 17, thus arouse multi-turn sensor 16.When magnetic cell 18 includes bipolar magnet, the voltage pulse as caused by wiegand wire unit 19 It is triggered after 180 ° of the change in location of magnetic cell 18 at the latest.By voltage pulse, multi-turn sensor 16 runs shape from preparation State is transitioned into its normal operating status.In this normal operating status, the new position of measurement and storage magnetic elements 18. Then so that multi-turn sensor 16 is reset to it again and prepare operating status.

Reference signs list

1 clutch actuation system

2 friction clutches

3 active cylinders

4 fluid pressure lines

5 slave cylinders

6 relay pistons

7 operating elements

8 bearings

9 equalizing reservoirs

10 active pistons

11 piston rods

12 screw rods

13 servo drives

14 motor

15 controllers

16 multi-turn sensors

17 chips

18 magnetic cells

19 wiegand wire units

20 conducting wires

21 arouse interface