Opening / closing body control system, and inspection system and inspection method thereof

Abstract

To simultaneously simplify an opening / closing body control system and maintain and / or improve the control accuracy thereof.SOLUTION: An inspection system 50 of an opening / closing body control system 10 includes a determination unit 60 that determines which one of a first rotational speed of a first electric motor 12 or a second rotational speed of a second electric motor 17 should be subject to feedback control. A control signal generation unit 34 is configured to be able to generate a pseudo control signal for inspection that simulates a control signal. A first drive circuit 21 and a second drive circuit 22 generate a first drive signal and a second drive signal, respectively, in response to the same pseudo control signal. The determination unit 60 determines a drive signal having a smaller duty ratio of the first drive signal and the second drive signal generated in response to the pseudo control signal. A control target setting unit 33 sets the rotational speed of the electric motor driven by a drive signal with the smaller duty ratio of the first rotational speed and the second rotational speed as the control target.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an opening / closing body control system, and an inspection system and inspection method thereof. [Background technology]

[0002] Patent Document 1 discloses a power back door device equipped with left and right drive units that drive a back door, which is an example of an opening / closing body. Each drive unit has a motor and a pulse sensor, and each motor is driven by a corresponding drive circuit. The left and right motors are controlled by individual feedback control systems.

[0003] In this regard, the power liftgate ECU references the signal from the left pulse sensor to generate a control signal for causing the detected value of the rotation speed of the left motor to follow a target value, and outputs the control signal to the drive circuit for the left motor. Similarly, the power liftgate ECU references the signal from the right pulse sensor to generate a control signal for causing the detected value of the rotation speed of the right motor to follow a target value, and outputs the control signal to the drive circuit for the right motor. The target value is common to the left and right motors because they are synchronized, but the detected value and control signal are separate for the left and right motors. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-023866 Summary of the Invention [Problem to be solved by the invention]

[0005] In this way, if two feedback control systems exist, one for each of the left and right motors, the system for controlling the opening and closing body becomes complicated. On the other hand, if the system is simplified, the accuracy of the control for synchronously operating the two drive units may decrease.

[0006] An object of the present invention is to simultaneously simplify the system for controlling the opening / closing body and maintain or improve the control accuracy. [Means for solving the problem]

[0007] One aspect of the present invention is an inspection system for an opening / closing body control system including: a first drive mechanism having a first electric motor and a first rotation sensor that outputs a first detection signal in accordance with the rotation of the first electric motor, and that drives an opening / closing body that opens and closes an opening in a vehicle body by the rotation of the first electric motor; and a second drive mechanism having a second electric motor and a second rotation sensor that outputs a second detection signal in accordance with the rotation of the second electric motor, and that drives the opening / closing body together with the first drive mechanism by the rotation of the second electric motor. The inspection system includes: an opening / closing body control device that is mounted on the vehicle body and included in the opening / closing body control system, and that performs feedback control on the rotation speeds of the first electric motor and the second electric motor; and a determination unit that determines which of the first rotation speed of the first electric motor and the second rotation speed of the second electric motor should be the control target of the feedback control, wherein the opening / closing body control device detects the first rotation speed of the first electric motor in accordance with the first detection signal and the second rotation speed of the second electric motor in accordance with the second detection signal; a control signal generation unit that generates a control signal for causing a detection value of the control object to follow a target value; a control signal supply unit that supplies the control signal generated by the control signal generation unit; a first drive circuit that generates and outputs a first drive signal for driving the first electric motor in response to the control signal supplied from the control signal supply unit; and a second drive circuit that generates and outputs a second drive signal for driving the second electric motor in response to the control signal supplied from the control signal supply unit, wherein the control signal generation unit is configured to be able to generate pseudo control signals for inspection that simulate the control signals, the first drive circuit and the second drive circuit generate the first drive signal and the second drive signal, respectively, in response to the same pseudo control signal supplied via the control signal supply unit, the determination unit determines which of the first drive signal and the second drive signal generated in response to the pseudo control signal has a smaller duty ratio, and the control object setting unit determines the rotation speed of the electric motor driven by the drive signal with the smaller duty ratio from the first rotation speed and the second rotation speed,An inspection system for an opening / closing body control system is provided, which is set as the control object.

[0008] One aspect of the present invention is an inspection method for an opening / closing body control system including: a first drive mechanism having a first electric motor and a first rotation sensor that outputs a first detection signal in accordance with rotation of the first electric motor, and that drives an opening / closing body that opens and closes an opening in a vehicle body by rotation of the first electric motor; a second drive mechanism having a second electric motor and a second rotation sensor that outputs a second detection signal in accordance with rotation of the second electric motor, and that drives the opening / closing body together with the first drive mechanism by rotation of the second electric motor; and an opening / closing body control device that is mounted on the vehicle body and performs feedback control on rotation speeds of the first electric motor and the second electric motor, wherein the opening / closing body control device includes a rotation speed detection unit that detects a first rotation speed of the first electric motor in accordance with the first detection signal and detects a second rotation speed of the second electric motor in accordance with the second detection signal, a control object setting unit that sets either the first rotation speed or the second rotation speed as a control object of the feedback control, a control signal generation unit that generates a control signal for causing the detection value of the control object to follow a target value, and a control signal generating unit that supplies the control signal generated by a control signal generating unit; a first drive circuit that generates and outputs a first drive signal for driving the first electric motor in response to the control signal supplied from the control signal supply unit; and a second drive circuit that generates and outputs a second drive signal for driving the second electric motor in response to the control signal supplied from the control signal supply unit, the method comprising: generating, in the control signal generating unit, a pseudo control signal for inspection that simulates the control signal; generating, in the first drive circuit and the second drive circuit, respectively, the first drive signal and the second drive signal in response to the same pseudo control signal supplied via the control signal supply unit; determining, from the first drive signal and the second drive signal generated in response to the pseudo control signal, which drive signal has a smaller duty ratio; and setting, in the control object setting unit, the rotational speed of the electric motor driven by the drive signal with the smaller duty ratio from the first rotational speed and the second rotational speed, as the control object.

[0009] One aspect of the present invention relates to a vehicle control system including a first drive mechanism having a first electric motor and a first rotation sensor that outputs a first detection signal in accordance with the rotation of the first electric motor, and that drives an opening / closing body that opens and closes an opening in a vehicle body by the rotation of the first electric motor; a second drive mechanism having a second electric motor and a second rotation sensor that outputs a second detection signal in accordance with the rotation of the second electric motor, and that drives the opening / closing body together with the first drive mechanism by the rotation of the second electric motor; and an opening / closing body control device that is mounted on the vehicle body and performs feedback control regarding the rotational speeds of the first electric motor and the second electric motor, wherein the opening / closing body control device includes a rotational speed detection unit that detects a first rotational speed of the first electric motor in accordance with the first detection signal and a second rotational speed of the second electric motor in accordance with the second detection signal, and a control unit that controls one of the first rotational speed and the second rotational speed as a control target of the feedback control. a control signal generating unit that generates a control signal for making the detection value of the control object follow a target value; a control signal supplying unit that supplies the control signal generated by the control signal generating unit; a first drive circuit that generates and outputs a first drive signal for driving the first electric motor in response to the control signal supplied from the control signal supplying unit; and a second drive circuit that generates and outputs a second drive signal for driving the second electric motor in response to the control signal supplied from the control signal supplying unit, wherein the control object setting unit sets, as the control object, the rotational speed of the electric motor driven by the drive signal having a smaller duty ratio of the first drive signal and the second drive signal, which are generated in response to the same control signal supplied to the first drive circuit and the second drive circuit via the control signal supplying unit.

[0010] According to the above configuration, in the opening / closing member control system, either the first rotational speed of the first electric motor or the second rotational speed of the second electric motor is set as a control target for feedback control. A control signal is generated from a detected value and a target value of the set control target, and the same control signal is supplied to both the first drive circuit and the second drive circuit. The first drive circuit generates a first drive signal in response to the control signal and outputs it to the first electric motor, while the second drive circuit generates a second drive signal in response to the same control signal and outputs it to the second electric motor. In this way, when the two electric motors are operated synchronously through feedback control, the target value, detected value, and control signal are common to the first drive mechanism and the second drive mechanism. This allows for simplification of the control signal generation unit and the control signal supply unit, thereby simplifying the configuration of the opening / closing member control system.

[0011] The drive circuits correspond one-to-one to the electric motors. To properly drive the opening / closing body, it is desirable that the first drive signal and the second drive signal have the same duty ratio. However, in reality, due to individual differences in drive circuits, the first drive signal and the second drive signal may differ in their characteristics even if they are generated in response to the same control signal. For example, if the duty ratio of the PWM control signal serving as the control signal is 20%, the duty ratio of the second drive signal may be close to 0%, even if the duty ratio of the first drive signal is around 20%.

[0012] Therefore, the control target setting unit of the opening / closing body control system sets the rotational speed of the electric motor driven by the drive signal with the smaller duty ratio of the first and second drive signals generated in response to the same control signal as the control target. Because feedback control is performed based on the drive circuit with the lower output, even if there is variation in the characteristics of the drive circuits, the first and second drive mechanisms can be operated in synchronization, and the opening / closing body can be driven normally. [Effects of the Invention]

[0013] According to the present invention, it is possible to simplify the system for controlling the opening / closing body while maintaining or improving the control accuracy. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a perspective view showing a part of a vehicle to which an opening / closing body control system according to a first embodiment is applied. [Figure 2] 1 is a block diagram showing an opening / closing member control system according to a first embodiment. [Figure 3] FIG. 2 is a block diagram showing an inspection system for the opening / closing member control system according to the first embodiment. [Figure 4] 4 is a flowchart showing an inspection method for the opening / closing member control system according to the first embodiment. [Figure 5] FIG. 10 is a block diagram showing an opening / closing member control system and an inspection system thereof according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments will be described with reference to the drawings. Note that the same or corresponding elements are designated by the same reference numerals throughout the drawings, and detailed descriptions thereof will be omitted.

[0016] FIG. 1 shows a portion of a vehicle to which an opening / closing body control system 10 (see FIG. 2) according to this embodiment is applied. The opening / closing body control system 10 controls the operation of an opening / closing body 5 that opens and closes an opening 2 in a vehicle body 1. The opening / closing body 5 is attached to the vehicle body 1 so as to be displaceable between a fully closed position where the opening 2 is fully closed and a fully open position where the opening 2 is fully open. The operation of the opening / closing body 5 includes an opening operation where the opening / closing body is displaced toward the fully open position and a closing operation where the opening / closing body is displaced toward the fully closed position. The opening / closing body 5 is driven by a first drive mechanism 11 and a second drive mechanism 16 of the opening / closing body control system 10.

[0017] For example, the opening 2 is provided at the rear of the vehicle body 1 for opening the passenger compartment or luggage compartment, the opening / closing body 5 is a back door, and the first drive mechanism 11 and the second drive mechanism 16 are a pair of spindle drive mechanisms provided at a distance in the vehicle width direction. The back door is rotatably attached to the vehicle body 1 by a hinge connection, and its rotation axis extends in the vehicle width direction at the upper edge of the opening 2. Each spindle drive mechanism is configured as a rod body that expands and contracts in accordance with the rotation direction of a motor, and has one end pivotally supported on the vehicle body 1 and the other end pivotally supported on the opening / closing body 5. The opening / closing body 5 performs an opening operation in accordance with the extension of the rod body, and a closing operation in accordance with the contraction of the rod body.

[0018] The opening / closing body 5 is provided with a latch mechanism 6 that releasably holds the striker 3 provided on the vehicle body 1. The action of the latch mechanism 6 enables the opening / closing body 5 to be held in the fully closed position.

[0019] 2, the opening / closing member control system 10 is mounted on a vehicle in a completed manufacturing state. The opening / closing member control system 10 includes the first drive mechanism 11 and the second drive mechanism 16 described above, as well as an opening / closing member control device 20 and an external ECU 40 (ECU: Electronic Control Unit). The opening / closing member control system 10 may also include a motor that drives the latch mechanism 6 and a sensor that detects the state of the latch mechanism 6.

[0020] The first drive mechanism 11 and the second drive mechanism 16 have the same configuration. The first drive mechanism 11 has a first electric motor 12 and a first rotation sensor 13. The second drive mechanism 16 has a second electric motor 17 and a second rotation sensor 18. The first electric motor 12 and the second electric motor 17 are capable of rotating forward and reverse. The first drive mechanism 11 drives the opening / closing body by rotation of the first electric motor 12. The second drive mechanism 16 drives the opening / closing body 5 together with the first drive mechanism 11 by rotation of the second electric motor 17. The first electric motor 12 and the second electric motor 17 operate synchronously.

[0021] The first rotation sensor 13 outputs a first detection signal corresponding to the rotation of the first electric motor 12. The first rotation sensor 13 is configured, for example, by a Hall IC. The first detection signal is a square wave having a pulse width corresponding to the rotation angle and rotation speed of the first electric motor 12. The second rotation sensor 18 is similar to this. The second rotation sensor 18 outputs a second detection signal having a pulse width corresponding to the rotation of the second electric motor 17.

[0022] The opening / closing body control device 20 is mounted on the vehicle body 1 and performs feedback control regarding the rotational speeds of the first electric motor 12 and the second electric motor 17. Hereinafter, the rotational speed of the first electric motor 12 will be referred to as the "first rotational speed," and the rotational speed of the second electric motor 17 will be referred to as the "second rotational speed."

[0023] The opening / closing member control device 20 includes a controller 30, a first drive circuit 21, a second drive circuit 22, a control signal supply unit 23, a drive signal supply unit 24, a first drive connector 25, a second drive connector 26, a first detection connector 27, a second detection connector 28, and a communication connector 29. For example, these elements are mounted on a single control board.

[0024] The controller 30 is connected to the first drive circuit 21 and the second drive circuit 22 via a control signal supply unit 23. The first drive circuit 21 and the second drive circuit 22 are connected to a first drive connector 25 and a second drive connector 26, respectively, via a drive signal supply unit 24. The first drive connector 25 and the first detection connector 27 are disconnectably connected to the first electric motor 12 and the first rotation sensor 13, respectively, via wire harnesses. The second drive connector 26 and the second detection connector 28 are disconnectably connected to the second electric motor 17 and the second rotation sensor 18, respectively, via wire harnesses. The first detection connector 27 and the second detection connector 28 are connected to the controller 30 via detection signal lines.

[0025] The controller 30 includes, for example, a central processing unit (CPU) or a microprocessing unit (MPU) that cooperates with software to realize predetermined functions. The controller 30 may be configured with hardware circuits, such as dedicated electronic circuits or reconfigurable electronic circuits, designed to realize predetermined functions, or may be configured with various semiconductor integrated circuits. Examples of various semiconductor integrated circuits include a CPU, an MPU, a microcomputer, a digital signal processor (DSP), a field programmable gate array (FPGA), and an application specific integrated circuit (ASIC). The controller 30 may also include storage devices, such as a random access memory (RAM), a read-only memory (ROM), and an electrically erasable programmable read-only memory (EEPROM).

[0026] The controller 30 includes a storage unit 31, a rotation speed detection unit 32, a control target setting unit 33, and a control signal generation unit .

[0027] The storage unit 31 can be realized by the above-mentioned storage device. The storage unit 31 temporarily or permanently stores a program for controlling the opening and closing operation of the opening-closing body 5 and information used to execute the program. For example, the storage unit 31 stores a map that is referenced to set a target value for a control target of feedback control.

[0028] The controller 30 can input the first detection signal from the first rotation sensor 13 via the wire harness, the first detection connector 27, and the detection signal line, and can input the second detection signal from the second rotation sensor 18 via the wire harness, the second detection connector 28, and the detection signal line. The rotation speed detection unit 32 detects a first rotation speed in response to the first detection signal, and detects a second rotation speed in response to the second detection signal.

[0029] The control target setting unit 33 sets either the first rotation speed or the second rotation speed as a control target for feedback control. This setting is performed by the time the manufacture of the vehicle is completed.

[0030] The control signal generating unit 34 generates a control signal for causing the detection value of the control object set in the control object setting unit 33 to follow the target value. The detection value is acquired by the rotation speed detecting unit 32. The target value is set based on a map read from the storage unit 31. The control signal is, for example, a PWM signal. Hereinafter, the PWM signal as the control signal may be referred to as a "PWM control signal." The control signal generating unit 34 sets the duty ratio of the PWM control signal according to the difference between the detection value and the target value.

[0031] The control signal supply unit 23 supplies the same control signal generated in the control signal generation unit 34 to the first drive circuit 21 and the second drive circuit 22. The first drive circuit 21 generates a first drive signal for driving the first electric motor 12 in response to the supplied control signal. The second drive circuit 22 generates a second drive signal for driving the second electric motor 17 in response to the same control signal. The first drive circuit 21 and the second drive circuit 22 have the same configuration and are realized by, for example, a driver IC.

[0032] The first drive signal and the second drive signal are also PWM signals. Hereinafter, the PWM signal serving as the first drive signal may be referred to as the "first drive PWM signal." The PWM signal serving as the second drive signal may be referred to as the "second drive PWM signal." The first drive circuit 21 sets the duty ratio of the first drive PWM signal in accordance with the duty ratio of the PWM control signal. The first drive PWM signal is supplied to the first electric motor 12 via the drive signal supplier 24, the first drive connector 25, and the wire harness. The second drive circuit 22 sets the duty ratio of the second drive PWM signal in accordance with the duty ratio of the PWM control signal. The second drive PWM signal is supplied to the second electric motor 17 via the drive signal supplier 24, the second drive connector 26, and the wire harness.

[0033] The opening / closing member control device 20 is connected to an external ECU 40 via a communication connector 29. The external ECU 40 acquires an operation start command for the opening / closing member 5 inputted by a smart key or the like, and transfers the acquired operation start command to a controller 30 of the opening / closing member control device 20. The controller 30 executes control to drive the opening / closing member 5 through feedback control in response to the operation start command.

[0034] As described above, in the opening / closing member control system 10 according to this embodiment, either the first rotational speed or the second rotational speed is set as a control target for feedback control. A control signal is generated from the detected value and target value of the set control target, and the same control signal is supplied to both the first drive circuit 21 and the second drive circuit 22. The first drive circuit 21 generates a first drive signal in response to the control signal and outputs it to the first electric motor 12, while the second drive circuit 22 generates a second drive signal in response to the same control signal and outputs it to the second electric motor 17. In this way, when the first electric motor 12 and the second electric motor 17 are synchronously operated through feedback control, the target value, detected value, and control signal are common to the first drive mechanism 11 and the second drive mechanism 16. Therefore, the control signal generator 34 and the control signal supplier 23 can be simplified compared to when the detected value and control signal are separate. This simplifies the configuration of the opening / closing member control system 10.

[0035] In this system configuration, in order to operate the first drive mechanism 11 and the second drive mechanism 16 in synchronization to normally drive the opening / closing body 5, it is desirable that the first drive signal and the second drive signal be generated to have the same characteristics in response to the same control signal. For example, it is desirable that the duty ratio of the first drive PWM drive signal and the duty ratio of the second drive PWM drive signal are the same.

[0036] However, in reality, the characteristics of the drive signals generated by the drive circuits vary due to individual differences between the drive circuits. For example, the first drive PWM signal and the second drive PWM signal may have different duty ratios even if they are generated in response to the same PWM control signal.

[0037] For example, if the duty ratio of the PWM control signal is 20%, even if the duty ratio of the first drive PWM signal is around 20%, the duty ratio of the second drive PWM signal may be close to 0%. In such a case, if the first rotation speed is set as the control target, the deviation between the detected value of the control target and the target value is small, and the duty ratio of the control signal is set based on this small deviation. When viewed as a standalone unit, the control accuracy of the first drive mechanism 11 can be increased.

[0038] On the other hand, in the second drive mechanism 16, because the output of the second drive PWM signal is low, the second rotation speed is low relative to the detected value (first rotation speed) of the controlled object, and therefore also low relative to the target value of the controlled object. While the deviation between the actual value of the second rotation speed and the target value of the controlled object is large, a control signal sufficient to eliminate this deviation is not supplied to the second drive circuit 22. Therefore, the actual value of the second rotation speed never tracks the target value of the controlled object, and the second drive mechanism 16 either does not operate or operates at an extremely slow speed compared to the first drive mechanism 11. Therefore, it is difficult to synchronize the first drive mechanism 11 and the second drive mechanism 16, making it difficult to properly drive the opening / closing body 5.

[0039] As described above, the accuracy of synchronous control is likely to decrease when the duty ratio of the PWM control signal is small due to differences between individual drive circuits. This is because, as mentioned above, the duty ratio of the drive signal may fall to around 0%. Furthermore, immediately after the start of operation of the opening / closing body 5 or immediately before its end, the target value is low, so the duty ratio of the PWM control signal tends to decrease.

[0040] Therefore, in the manufacturing stage of the opening / closing body control system 10, before the manufacturing of the vehicle is completed, an inspection system 50 (see FIG. 3) is used to inspect the individual differences of the first drive circuit 21 and the second drive circuit 22. As a result, the control target is appropriately set in the control target setting unit 33.

[0041] Referring to Fig. 3, the inspection system 50 includes the opening / closing body control device 20 described above. The inspection system 50 does not include the first drive mechanism 11, the second drive mechanism 16, and the external ECU 40 (see Fig. 2), but instead includes an external device 51. The external device 51 is separate from the vehicle body 1 and is not installed in the vehicle when the vehicle is in a completed manufacturing state. The external device 51 has a CPU, a memory, and an input / output interface.

[0042] The external device 51 is detachably connected to the first drive connector 25 and the second drive connector 26 via a wire harness, instead of the first drive mechanism 11 and the second drive mechanism 16. This allows the external device 51 to acquire the first drive signal output from the first drive circuit 21 and the second drive signal output from the second drive circuit 22. Note that the first detection connector 27 and the second detection connector 28 do not have to be connected to the external device 51. The external device 51 is detachably connected to the communication connector 29 via a wire harness, instead of the external ECU 40. This allows the controller 30 to acquire information and data generated and output by the external device 51.

[0043] The external device 51 has a determination unit 60 that determines whether the first rotation speed or the second rotation speed should be the control target of the feedback control. The determination unit 60 determines the control target based on the first drive signal and the second drive signal.

[0044] The controller 30 has a mode setting unit 35 that switches between a normal mode in which the operation control of the first drive mechanism 11 and the second drive mechanism 16 is executed as described above, and an inspection mode for inspection before the vehicle reaches a manufacturing completion state. During the inspection, the mode setting unit 35 sets the opening / closing body control device 20 to the inspection mode. After the inspection is completed, the mode setting unit 35 sets the opening / closing body control device 20 to the normal mode. A mode switching command may be input from an external device 51.

[0045] With reference to FIG. 4, the operation of the inspection system 50 will be described along the steps of the inspection method executed by the inspection system 50 when the inspection mode is set.

[0046] When the test mode is set, the control signal generation unit 34 generates a pseudo control signal that simulates a control signal generated in the normal mode (step S1). The pseudo control signal is a test signal, and is a PWM signal with a predetermined duty ratio. The predetermined duty ratio is, for example, within a range of 0% to 30%, preferably within a range of 15% to 25%. The same pseudo control signal is supplied to both the first drive circuit 21 and the second drive circuit 22 via the control signal supply unit 23.

[0047] Then, the first drive circuit 21 outputs a first drive signal in response to the pseudo control signal, and the second drive circuit 22 outputs a second drive signal in response to the pseudo control signal (step S2). The first drive signal and the second drive signal output here are also PWM signals. The first drive signal is output to the external device 51 via the first drive connector 25. The second drive signal is output to the external device 51 via the second drive connector 26.

[0048] Next, external device 51 measures the duty ratio of the first drive signal and the duty ratio of the second drive signal. Determination unit 60 compares the duty ratio of the first drive signal with the duty ratio of the second drive signal and determines which drive signal has the smaller duty ratio (step S3).

[0049] Next, the external device 51 outputs the determination result from the determination unit 60 (step S4). Information indicating the determination result is input to the controller 30 via the communication connector 29.

[0050] Then, based on the input determination result, the control target setting unit 33 sets the rotation speed of the electric motor driven by the drive signal with the smaller duty ratio as the control target (step S5). If the duty ratio of the first drive signal is smaller than the duty ratio of the second drive signal, the first rotation speed is set as the control target. If the duty ratio of the second drive signal is smaller than the duty ratio of the first drive signal, the second rotation speed is set as the control target.

[0051] This completes the inspection. The mode setting unit 35 switches from the inspection mode to the normal mode. The external device 51 is removed from the first drive connector 25, the second drive connector 26, and the communication connector 29. The first drive mechanism 11, the second drive mechanism 16, and the external ECU 40 are connected to the opening / closing member control device 20, thereby assembling the opening / closing member control system 10.

[0052] In this way, the individual differences between the two drive circuits that together make up one opening / closing body control device 20 are inspected during the manufacturing stage, and then the control target is set. The control target that is set is the rotation speed corresponding to the drive signal with the smaller duty ratio (lower output). As a result, feedback control is performed based on the drive circuit with the lower output. Even if there is variation in the characteristics of the drive circuits, both the first drive mechanism 11 and the second drive mechanism 16 can operate, and the opening / closing body 5 can be driven normally.

[0053] By setting an operation mode dedicated to the test, the judgment process can be performed based on a control signal suitable for the test. This allows the control target to be set appropriately. A decrease in control accuracy due to individual differences in the drive circuit is likely to occur when the target value is low in normal mode and the duty ratio of the PWM control signal is low. Therefore, the duty ratio of the pseudo control signal is set within the range of 0% to 30%. In this way, the duty ratio of the pseudo control signal is set relatively low, and the control target is set based on the drive signal corresponding to this pseudo control signal. This makes it possible to effectively suppress a decrease in control accuracy when the duty ratio of the control signal is low in normal mode.

[0054] The determination unit 60 is provided in the external device 51. Since the determination function is not provided in the opening / closing member control system 10, the cost of the opening / closing member control system 10 can be reduced.

[0055] Next, with reference to FIG. 5, an opening / closing member control system and an inspection system according to a second embodiment will be described, focusing on differences from the first embodiment.

[0056] As shown in FIG. 5 , in the inspection system according to this embodiment, the determination unit 60 is provided in the opening / closing member control device 20. The opening / closing member control device 20 is mounted on the vehicle body 1, and the determination unit 60 is provided in a vehicle in a completed manufacturing state. The opening / closing member control device 20 further includes a drive signal distribution unit 52 in addition to the determination unit 60. The drive signal distribution unit 52 branches off from the drive signal supply unit 24 and is connected to the determination unit 60, and outputs the first drive signal and the second drive signal supplied to the drive signal supply unit 24 to the determination unit 60.

[0057] As in the first embodiment, the determination unit 60 compares the duty ratio of the first drive signal with the duty ratio of the second drive signal while the inspection mode is set, determines which drive signal has the smaller duty ratio, and outputs the determination result to the controller 30. Based on the determination result output from the determination unit 60, the control target setting unit 33 sets the rotation speed of the electric motor driven by the drive signal with the smaller duty ratio as the control target.

[0058] In this embodiment, as in the first embodiment, both a simplified configuration and maintenance or improvement of control accuracy are achieved. Because the determination unit 60 is mounted on the opening / closing body control device 20, inspection does not necessarily have to be performed at a production facility such as a factory. Therefore, as shown in the figure, inspection can be performed when the first drive mechanism 11, the second drive mechanism 16, and the external ECU 40 are connected to the opening / closing body control device 20, i.e., when the opening / closing body control device 20 is actually mounted on the vehicle body 1. This eliminates restrictions on the timing at which the setting process for the control object can be executed.

[0059] Although the embodiment has been described above, the above configuration can be modified as appropriate within the scope of the spirit of the present invention.

[0060] The opening 2 may be provided on the side of the vehicle body 1 to open the passenger compartment, and the opening / closing body 5 may be a side door. The opening 2 may also open the luggage compartment or engine compartment, and the opening / closing body 5 may be a door, a trunk lid, or a hood. The rotation axis of the opening / closing body 5 may extend in the vehicle height direction as well as the vehicle width direction. The opening / closing body 5 may be displaced by sliding as well as by rotation. The drive mechanism is not limited to a spindle drive mechanism and may be appropriately changed to suit the operation of the opening / closing body 5 depending on the type of the opening 2, the location of the opening / closing body 5, and the displacement mode of the opening / closing body 5. [Explanation of symbols]

[0061] 1. Body 2 Opening 3 Striker 5 Opening and closing body 6 Latch mechanism 10. Opening and closing body control system 11 First drive mechanism 12 First electric motor 13 First rotation sensor 16 Second drive mechanism 17 Second electric motor 18 Second rotation sensor 20 Opening and closing body control device 21 First drive circuit 22 Second drive circuit 23 Control signal supply unit 24 Drive signal supply unit 25 First drive connector 26 Second drive connector 27 First detection connector 28 Second detection connector 29 Communication connector 30 Controller 31 Storage section 32 Rotational speed detection unit 33 Control target setting section 34 Control signal generation unit 35 Mode setting section 40 External ECU 50 Inspection Systems 51 External device 52 Drive signal distribution unit 60 Judgment section

Claims

1. a first drive mechanism including a first electric motor and a first rotation sensor that outputs a first detection signal corresponding to the rotation of the first electric motor, and that drives an opening / closing body that opens and closes an opening in a vehicle body by the rotation of the first electric motor; a second drive mechanism including a second electric motor and a second rotation sensor that outputs a second detection signal corresponding to rotation of the second electric motor, and that drives the opening / closing body together with the first drive mechanism by rotation of the second electric motor; An inspection system for an opening and closing body control system comprising: an opening / closing member control device mounted on the vehicle body and included in the opening / closing member control system, the opening / closing member control device performing feedback control on rotational speeds of the first electric motor and the second electric motor; a determination unit that determines whether a first rotation speed of the first electric motor or a second rotation speed of the second electric motor should be a control target of the feedback control; Equipped with The opening / closing body control device is a rotation speed detection unit that detects a first rotation speed of the first electric motor in response to the first detection signal and detects a second rotation speed of the second electric motor in response to the second detection signal; a control target setting unit that sets one of the first rotation speed and the second rotation speed as a control target of the feedback control; a control signal generating unit that generates a control signal for causing the detection value of the controlled object to follow a target value; a control signal supply unit that supplies the control signal generated by the control signal generation unit; a first drive circuit that generates and outputs a first drive signal for driving the first electric motor in response to the control signal supplied from the control signal supply unit; a second drive circuit that generates and outputs a second drive signal for driving the second electric motor in response to the control signal supplied from the control signal supply unit; Equipped with the control signal generating unit is configured to be able to generate a pseudo control signal for inspection that simulates the control signal; the first drive circuit and the second drive circuit generate the first drive signal and the second drive signal, respectively, in response to the same pseudo control signal supplied via the control signal supply unit; the determining unit determines which of the first drive signal and the second drive signal generated in response to the pseudo control signal has a smaller duty ratio; the control target setting unit sets, as the control target, the rotation speed of the electric motor driven by the drive signal having the smaller duty ratio out of the first rotation speed and the second rotation speed. Inspection system for opening and closing body control systems.

2. The determination unit is provided in an external device separate from the vehicle body. The inspection system for an opening / closing body control system according to claim 1 .

3. The opening / closing body control device is a first drive connector connected to the first drive circuit and to be connected to the first electric motor; a second drive connector connected to the second drive circuit and to be connected to the second electric motor; Equipped with the external device is connected to the first drive connector and the second drive connector to acquire the first drive signal and the second drive signal; The inspection system for an opening / closing member control system according to claim 2 .

4. The determination unit is provided in the opening / closing body control device, The inspection system for an opening / closing body control system according to claim 1 .

5. The pseudo control signal is a PWM signal having a predetermined duty ratio. An inspection system for an opening / closing member control system according to any one of claims 1 to 4.

6. The predetermined duty ratio is set within a range of 0% to 30%. The inspection system for an opening / closing member control system according to claim 5 .

7. a first drive mechanism including a first electric motor and a first rotation sensor that outputs a first detection signal corresponding to the rotation of the first electric motor, and that drives an opening / closing body that opens and closes an opening in a vehicle body by the rotation of the first electric motor; a second drive mechanism including a second electric motor and a second rotation sensor that outputs a second detection signal corresponding to rotation of the second electric motor, and that drives the opening / closing body together with the first drive mechanism by rotation of the second electric motor; an opening / closing member control device mounted on the vehicle body and performing feedback control on the rotational speeds of the first electric motor and the second electric motor; An inspection method for an opening and closing body control system comprising: The opening / closing body control device is a rotation speed detection unit that detects a first rotation speed of the first electric motor in response to the first detection signal and detects a second rotation speed of the second electric motor in response to the second detection signal; a control target setting unit that sets one of the first rotation speed and the second rotation speed as a control target of the feedback control; a control signal generating unit that generates a control signal for causing the detection value of the controlled object to follow a target value; a control signal supply unit that supplies the control signal generated by the control signal generation unit; a first drive circuit that generates and outputs a first drive signal for driving the first electric motor in response to the control signal supplied from the control signal supply unit; a second drive circuit that generates and outputs a second drive signal for driving the second electric motor in response to the control signal supplied from the control signal supply unit; Equipped with The method comprises: the control signal generating unit generates a pseudo control signal for inspection that simulates the control signal; In the first drive circuit and the second drive circuit, the first drive signal and the second drive signal are generated in response to the same pseudo control signal supplied via the control signal supply unit, determining which of the first drive signal and the second drive signal generated in response to the pseudo control signal has a smaller duty ratio; the control target setting unit sets, as the control target, the rotation speed of the electric motor driven by the drive signal having the smaller duty ratio out of the first rotation speed and the second rotation speed; An inspection method for an opening / closing body control system, comprising:

8. a first drive mechanism including a first electric motor and a first rotation sensor that outputs a first detection signal corresponding to the rotation of the first electric motor, and that drives an opening / closing body that opens and closes an opening in a vehicle body by the rotation of the first electric motor; a second drive mechanism including a second electric motor and a second rotation sensor that outputs a second detection signal corresponding to rotation of the second electric motor, and that drives the opening / closing body together with the first drive mechanism by rotation of the second electric motor; an opening / closing member control device mounted on the vehicle body and performing feedback control on the rotational speeds of the first electric motor and the second electric motor; Equipped with The opening / closing body control device is a rotation speed detection unit that detects a first rotation speed of the first electric motor in response to the first detection signal and detects a second rotation speed of the second electric motor in response to the second detection signal; a control target setting unit that sets one of the first rotation speed and the second rotation speed as a control target of the feedback control; a control signal generating unit that generates a control signal for causing the detection value of the controlled object to follow a target value; a control signal supply unit that supplies the control signal generated by the control signal generation unit; a first drive circuit that generates and outputs a first drive signal for driving the first electric motor in response to the control signal supplied from the control signal supply unit; a second drive circuit that generates and outputs a second drive signal for driving the second electric motor in response to the control signal supplied from the control signal supply unit; Equipped with the control target setting unit sets, as the control target, the rotation speed of an electric motor driven by one of the first drive signal and the second drive signal, which has a smaller duty ratio, generated in response to the same control signal supplied to the first drive circuit and the second drive circuit via the control signal supply unit. Opening and closing body control system.

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