阅读说明：本技术 开闭体控制装置 (Opening/closing body control device ) 是由 本间弘晃 原健太朗 于 2020-01-22 设计创作，主要内容包括：一种开闭体控制装置,具有控制部,上述控制部对电动机部进行控制,以使设置于车门的开闭体在全闭位置与全开位置之间进行开闭动作,控制部在外部气温为常温时的关闭动作时,实施常温时电压控制,控制向电动机部供给的供给电压而调节开闭体的速度,在外部气温脱离常温的情况下,与常温时电压控制相比,使向电动机部供给的供给电压为高电压。(An opening/closing body control device includes a control unit that controls a motor unit so that an opening/closing body provided in a vehicle door is opened/closed between a fully closed position and a fully open position, wherein the control unit performs normal temperature voltage control during a closing operation when an outside air temperature is normal temperature, controls a supply voltage supplied to the motor unit to adjust a speed of the opening/closing body, and sets the supply voltage supplied to the motor unit to a higher voltage than the normal temperature voltage control when the outside air temperature is deviated from the normal temperature.)

1. An opening/closing body control device has a control unit for controlling a motor unit to open/close an opening/closing body provided in a door between a fully closed position and a fully open position,

the control unit performs normal temperature voltage control to control a supply voltage to the motor unit to adjust a speed of the opening/closing body during a closing operation when an outside air temperature is normal temperature, and sets the supply voltage to the motor unit to a higher voltage than the normal temperature voltage control when the outside air temperature is out of the normal temperature.

2. The opening-closing body control device according to claim 1,

when the outside air temperature is out of the normal temperature, the control unit supplies an outside supply voltage to the motor unit without performing the normal temperature voltage control so that the supply voltage supplied to the motor unit is controlled to be higher than the normal temperature voltage.

3. The opening-closing body control device according to claim 1,

when the outside air temperature is out of the normal temperature, the supply voltage to the motor unit is set to a higher voltage than the normal-temperature voltage control in a predetermined section before the opening/closing body is closed.

4. The opening-closing body control device according to claim 3,

the predetermined section before the opening/closing body is closed is a range in which the glass run channel is provided in the window frame of the vehicle.

Technical Field

The present invention relates to an opening/closing body control device.

Background

Conventionally, as an example of an opening/closing body control device provided in a vehicle, there are a power window device, a slide door device, a movable roof device, and the like (see, for example, japanese patent laid-open No. 2016-. In such an opening/closing body control device, there is known a device including a motor unit for moving an opening/closing body, and controlling a voltage supplied to the motor unit to adjust a moving speed of the opening/closing body.

In the opening/closing body control device of patent document 1, for example, voltage control (speed control) is performed in a case other than rainfall or snowfall, and voltage control is not performed in a case of rainfall or snowfall.

In the opening/closing body control device as described above, whether to perform or not perform voltage control is determined based on weather information. However, in an environment where the opening/closing body control device is used, since the influence of the outside air temperature is large, the sliding loss changes due to the influence of the outside air temperature, or the motor unit is likely to generate heat. As a result, the tightening force may be reduced.

Disclosure of Invention

The present invention aims to provide an opening/closing body control device that suppresses a drop in the tightening force due to the outside air temperature.

An opening/closing body control device (11) for solving the above-mentioned problems is provided with a control unit (14), wherein the control unit (14) controls a motor unit (12) so that an opening/closing body (WG) provided in a vehicle Door (DR) performs an opening/closing operation between a fully closed position and a fully open position, wherein the control unit performs a voltage control at normal temperature when the outside air temperature is a closing operation at normal temperature, controls a supply voltage supplied to the motor unit to adjust a speed of the opening/closing body, and when the outside air temperature is out of the normal temperature, the supply voltage supplied to the motor unit is set to a higher voltage than the voltage control at normal temperature.

According to the above aspect, when the outside air temperature is out of the normal temperature, the supply voltage to the motor unit is controlled to be higher than the normal temperature voltage, whereby the tightening force can be suppressed from decreasing at a low temperature or at a high temperature.

Other features and aspects will become apparent from the following detailed description, the accompanying drawings, and the claims.

Drawings

Fig. 1 is a schematic configuration diagram of a system including an opening/closing body control device according to an embodiment.

Fig. 2 is a flowchart illustrating a control example of the opening/closing body control device according to this embodiment.

Fig. 3 is an operation explanatory diagram for explaining an operation example of the opening/closing body control device in the embodiment.

Fig. 4 is an operation explanatory diagram for explaining an operation example of the opening/closing body control device in the modification.

In the drawings and detailed description, like reference numerals refer to like elements. The figures are not to scale and the depiction of elements of the figures may be exaggerated for clarity, illustration, and convenience.

Detailed Description

The present description provides a thorough understanding of the described methods, apparatus, and/or systems. Variations and equivalents of the described methods, apparatus, and/or systems will be apparent to those skilled in the art. The order of acts is exemplary, and may be varied in ways apparent to those skilled in the art, except where acts necessarily occur in a particular order. A description of functions and configurations well known to those skilled in the art may be omitted.

The exemplary embodiments may have different ways and are not limited to the examples described. The examples set forth are complete and complete, however, and will convey the full scope of the invention to those skilled in the art.

Hereinafter, an embodiment of the opening/closing body control device will be described.

As shown in fig. 1, a power window system 10 mounted to a vehicle includes: an opening/closing body control device 11 that is installed in a door DR, and that opens and closes a window glass WG of the door DR; and an open/close switch 20, wherein the open/close switch 20 outputs a drive signal to the opening/closing body control device 11. The power window system 10 includes a vehicle body ECU (Electric Control Unit) 21, and the vehicle body ECU21 is connected to the opening/closing body Control device 11 so as to be able to communicate with each other.

The opening/closing body control device 11 is integrally assembled from a motor unit 12, a drive circuit 13, and a power window ECU (hereinafter referred to as P/WECU) 14. The P/WECU14 of the present embodiment corresponds to a control unit. The control part comprises one or more CPUs (Central Processing Unit) or MPUs (micro Processing Unit). The controller 41 may be configured as a circuit (circuit) including 1) one or more processors that execute various processes in accordance with a computer program (software), or 2) one or more dedicated hardware circuits that execute at least a part of the various processes, such as an Application Specific Integrated Circuit (ASIC), or 3) a combination of these. The processor includes a CPU and memories such as a RAM and a ROM, which store program codes or instructions configured to cause the CPU to execute processing. Memory or computer-readable media includes all available media that can be accessed by a general purpose or special purpose computer. The control section 41 performs various controls based on at least one of the first state information and the operation information related to the operation of the operation section 42.

The motor unit 12 is driven to rotate by the supply of drive power from the drive circuit 13, and the window glass WG is opened and closed in the vertical direction by a window regulator (not shown).

The drive circuit 13 includes a relay circuit 13a and an FET (Field effect transistor) 13 b. The relay circuit 13a is a circuit that receives power supply from a battery BT mounted in the vehicle and stops supply of drive power for forward and reverse rotation drive to the motor unit 12. Further, FET13b, which is a semiconductor switching element, performs PWM (Pulse Width Modulation) control to regulate the drive power output from relay circuit 13 a. That is, the relay circuit 13a drives the motor unit 12 in the normal or reverse direction and stops the driving, that is, operates and stops the window glass WG in the opening or closing direction, and the FET13b changes the rotation speed of the motor unit 12, that is, the operation speed of the window glass WG. The relay circuit 13a and the FET13b are controlled by the P/WECU 14.

The P/WECU14 includes a PWM control section 14 a. Further, a rotation pulse signal synchronized with the rotation of the motor unit 12 is input from the rotation sensor 15 to the P/WECU 14. Further, an open/close command signal from the open/close switch 20 provided in the vehicle door DR or the like is input to the P/WECU 14.

When the on command signal is input, the P/WECU14 switches the relay circuit 13a to a state (on) in which power is supplied in a power supply direction for rotating the motor unit 12 forward, for example, and when the off command signal is input, switches the relay circuit 13a to a state in which power is supplied in a power supply direction for rotating the motor unit 12 backward, for example. In this case, the PWM control unit 14a of the P/WECU14 outputs a PWM control signal to the control terminal of the FET13b to switch the FET13b on and off at a constant (duty 100%) or a predetermined frequency (duty variable). Here, the case where the FET13b is fixed in the on state is a state where voltage control is not performed, and the case where the FET13b turns on, off the drive to change the duty ratio is a state where voltage control is performed.

When the opening/closing command signal is not input, the P/WECU14 stops the power supply (turning off) to the motor unit 12 from the relay circuit 13a, and the PWM control unit 14a switches the FET13b to off by the PWM control signal.

The P/WECU14 is connected to a vehicle body ECU21 as a host ECU through a vehicle communication system, and as the vehicle communication system, L IN (L cal interconnection Network) communication, CAN (Controller Area Network) communication, and the like are available, the P/WECU14 acquires various kinds of vehicle information necessary from the vehicle body ECU21, the vehicle body ECU21 IN this example is connected to a temperature sensor 22 that detects the outside air temperature, and information of the outside air temperature detected by the temperature sensor 22 is input to the P/WECU14 via the vehicle body ECU 21.

When the outside air temperature detected by the temperature sensor 22 is normal temperature, the P/WECU14 performs normal temperature voltage control in which the speed of the window glass WG is adjusted by controlling the voltage supplied to the motor unit 12 during the closing operation. As the voltage control at the normal temperature, the P/WECU14 recognizes the opening/closing position of the window glass WG, and adjusts the drive power (voltage supplied to the motor unit 12) supplied from the drive circuit 13 to the motor unit 12 of the window glass WG by the PWM control of the FET13b, thereby performing the speed control of the opening/closing operation of the window glass WG. The voltage control at the normal temperature is performed, for example, in a predetermined interval (an interval a1 described later) from the start of the closing operation and in a predetermined interval (an interval A3 described later) before the window glass WG is completely closed.

Hereinafter, the operation control of the window glass WG by the P/WECU14 (hereinafter, referred to as normal operation control) based on the operation (opening or closing command signal) of the open/close switch 20 when the outside air temperature is normal temperature will be described.

When the window glass WG is closed based on the closing command signal, as shown by the solid line in fig. 3, the P/WECU14 performs slow start control for operating the window glass WG at a low speed at the start from the fully open position Px (or near the fully open position Px). The P/WECU14 performs slow stop control for decelerating the operating speed of the window glass WG before reaching the fully closed position Py.

Here, the first set position P1 and the second set position P2 are provided at predetermined positions between the fully open position Px and the fully closed position Py of the window glass WG. Of the two setting positions, the position closer to the fully open position Px is defined as a first setting position P11, and the position closer to the fully closed position Py is defined as a second setting position P12. Next, a section between the fully open position Px and the first set position P1 is referred to as a first section a11, a section between the first set position P11 and the second set position P12 is referred to as a second section a12, and a section between the second set position P12 and the fully closed position Py is referred to as a third section a 13. In one example, the first section a1 and the third section A3 are ranges in which the glass run channel 23 is provided in the window frame of the vehicle. In one example, the first set position P1 and the second set position P2 are positions at which contact between the window glass WG and the glass run channel 23 is started or ended during the opening and closing operation.

In the closing operation, in the first section a1, the P/WECU14 first supplies the voltage required for the initial torque (for example, the duty ratio is 100%, that is, the battery voltage Vb) to the motor unit 12. After that, the P/WECU14 controls the drive circuit 13 so as to decrease the magnitude of the supply voltage. Then, when the supply voltage drops to a predetermined level, the P/WECU14 controls the drive circuit 13 to increase the supply voltage to the motor unit 12. At this time, the P/WECU14 recognizes the current position of the window glass WG based on the rotation pulse signal output from the rotation sensor 15, and controls the voltage supplied to the motor unit 12 so that the moving speed of the window glass WG gradually increases with a change (rise) in the current position. To strictly explain this, the P/WECU14 controls the drive circuit 13 so that the duty ratio is higher as the window glass WG rises. Thereby, the window glass WG gradually accelerates from the low speed state and moves upward toward the closed position.

In the second section a2, the P/WECU14 controls the drive circuit 13 so that the voltage supplied to the motor unit 12 becomes the battery voltage Vb. That is, the P/WECU14 drives the FET13b at, for example, a duty ratio of 100% in the second section a 2. Thereby, the window glass WG moves upward at a substantially constant speed.

In the third section A3, the P/WECU14 controls the drive circuit 13 so that the supply voltage to the motor unit 12 is reduced. At this time, the P/WECU14 recognizes the current position of the window glass WG based on the rotation pulse signal output from the rotation sensor 15, and controls the voltage supplied to the motor unit 12 so that the moving speed of the window glass WG gradually decreases with a change (increase) in the current position. To be strictly described, the P/WECU14 controls the drive circuit 13 such that the duty ratio is lower as the window glass WG rises. Thereby, the window glass WG gradually decelerates from the high speed state and moves upward toward the closed position.

As described above, in the normal operation control based on the operation of the open/close switch 20, the P/WECU14 executes the normal temperature voltage control in the vicinity of the fully closed position Py and the fully open position Px to execute the slow start control and the slow stop control.

In addition, in the case where the outside air temperature detected by the temperature sensor 22 is not normal temperature, which is different from normal temperature, the P/WECU14 of the opening/closing body control device 11 of the present embodiment sets the voltage supplied to the motor unit 12 to a higher voltage than the voltage control at normal temperature. That is, when the outside air temperature detected by the temperature sensor 22 is out of the normal temperature, the P/WECU14 does not perform the voltage control at the normal temperature. In the present example, the room temperature is in the range of 0 ℃ or more and less than 40 ℃, but the range may be changed as appropriate.

The operation control of the window glass WG by the P/WECU14 based on the closing operation (closing command signal) of the open/close switch 20 when the outside air temperature deviates from the normal temperature will be described below.

When the window glass WG is caused to perform a closing operation based on the closing command signal when the outside air temperature deviates from the normal temperature, that is, when the temperature is high or low, the P/WECU14 does not perform voltage control over the entire section from the fully open position Px to the fully closed position Py, as shown by the two-dot chain line in fig. 3. In other words, when the outside air temperature is deviated from the normal temperature, that is, when the temperature is high or low, and the window glass WG is caused to perform the closing operation based on the closing command signal, the P/WECU14 controls the drive circuit 13 so that the supply voltage supplied to the motor unit 12 becomes the battery voltage Vb in the entire range from the fully open position Px to the fully closed position Py. In other words, when the outside air temperature deviates from the normal temperature, that is, when the temperature is high or low, and the window glass WG is closed based on the close command signal, the P/WECU14 drives the FET13b at a duty ratio of 100% (that is, at the on-state) in the entire range from the fully open position Px to the fully closed position Py.

The operation of the present embodiment will be described with reference to fig. 2.

As shown in fig. 2, when the open/close switch 20 is operated to perform the closing operation, the P/WECU14 controls the motor unit 12 via the drive circuit 13 so that the window glass WG operates in the closing direction (upward) in step S10.

In step S11, the P/WECU14 acquires information on the outside air temperature detected by the temperature sensor 22 via the vehicle body ECU 21. The acquisition of the outside air temperature information may be performed once or more times during the closing operation. When the information on the outside air temperature is acquired a plurality of times, the time may be regular or irregular.

Subsequently, the P/WECU14 determines whether or not the outside air temperature is normal temperature in step S12.

When the outside air temperature is normal temperature in step S12, the P/WECU14 executes normal temperature voltage control to continue the closing operation in the next step S13.

When the outside air temperature is normal temperature in step S12, the P/WECU14 supplies the battery voltage Vb as the external supply voltage to the motor unit 12 to continue the shutdown operation without performing voltage control in the next step S14.

Next, if the window glass WG is completely closed in the third section a3, the P/WECU14 turns off the FET13b, thereby stopping the supply of voltage to the motor unit 12.

As described above, when the outside air temperature is the normal temperature, even when the slow start control and the slow stop control are performed as the normal temperature-time voltage control, the window glass WG is completely closed. When the outside air temperature deviates from the normal temperature, the battery voltage Vb that is the outside supply voltage is supplied to the motor unit 12 without performing the voltage control at the normal temperature, whereby the window glass WG can be tightened while suppressing a decrease in the tightening force of the window glass WG.

The effects of the present embodiment are described below.

(1) When the outside air temperature is out of the normal temperature, the voltage supplied to the motor unit 12 is controlled to be higher than the normal temperature voltage, thereby suppressing a decrease in the tightening force at low temperature or high temperature.

(2) When the outside air temperature is outside the normal temperature, the voltage supplied to the motor unit 12 is set to the battery voltage Vb that is the outside supply voltage, and thus voltage control is not necessary, and the load on the P/WECU14 can be suppressed.

The above embodiments can be modified as follows. The above embodiments and the following modifications can be combined and implemented without technical contradiction.

In the above embodiment, the battery voltage Vb is supplied to the motor unit 12 when the outside air temperature is outside the normal temperature in the first section a1 and the third section A3, but the present invention is not limited thereto.

As shown in fig. 4, in the first interval a1, the slow start control may be performed similarly to the voltage control at the normal temperature regardless of the outside air temperature.

As shown in fig. 4, in the vicinity of the full-close position Py, that is, in the third section, if the voltage is equal to or higher than the voltage supplied in the normal-temperature voltage control, an effect of suppressing the decrease in the tightening force can be obtained.

In the above embodiment, the slow stop control and the slow start control are performed when the outside air temperature is normal temperature, but the present invention is not limited thereto. For example, the slow start control may not be implemented.

In the above embodiment, the battery voltage Vb is supplied to the motor unit 12 in the section a2, but a voltage lower than the battery voltage Vb may be supplied to the motor unit 12 in the section a 2.

The drive circuit 13 is configured by the relay circuit 13a and the FET13b, but the configuration of the drive circuit is not limited to this, and for example, a full-bridge drive circuit using semiconductor switching elements such as four FETs or a half-bridge drive circuit using two semiconductor switching elements may be employed. In the above embodiment, the P/WECU14 adjusts the voltage applied to the motor unit by PWM control, but is not particularly limited thereto.

The name of the window glass WG includes glass, but is not limited to glass, and may be made of resin, for example.

Although not particularly mentioned in the above embodiment, the motor unit 12 may be any one of a brush motor unit and a brushless motor unit.

Although the present embodiment is embodied as a power window device for a vehicle, the present invention is not limited to this, and may be embodied as an opening/closing body driving device that drives and controls an opening/closing body (a sunroof, a sliding door, or the like) other than a window glass WG in a vehicle.

Various changes in form and detail may be made to the above-described examples without departing from the spirit, the scope of the claims and their equivalents. The above embodiments are for purposes of illustration only and not for purposes of limitation. Recitation of features in each example should be considered applicable to like features or aspects in other examples. Suitable results may be achieved when the succession of events is in a different order and/or when components, structures, means or circuits in the system described are combined in a different manner and/or replaced or supplemented by other components or their equivalents. It is intended that the scope of the invention be limited not by this detailed description, but rather by the claims and their equivalents. All modifications and equivalents that come within the scope of the claims are intended to be embraced therein.