JP2018040430A - Clutch control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the responsiveness of a clutch device while preventing the generation of an overshoot.SOLUTION: A clutch control device comprises: a valve 41 (42) for adjusting an air amount in a pressure chamber; a duty ratio map storage part 60 for storing a duty ratio map between and among a mass flow rate which should be adjusted in the pressure chamber, pressure in the pressure chamber, and a duty ratio of the valve 41 in order to obtain the mass flow rate at the application of the pressure; an adjustment flow rate decision part 54 for deciding the mass flow rate which should be adjusted in the pressure chamber on the basis of a targeted moving amount of a piston and an actual moving amount of the piston; a pressure estimation part 59 for estimating the pressure in the pressure chamber on the basis of the moving amount of the piston; a duty ratio decision part 61 for deciding the duty ratio of the valve 41 (42) on the basis of the decided mass flow rate, the estimated pressure and the duty ratio map; and an output part 62 for outputting a control signal to the valve 41 (42) following the decided duty ratio.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a clutch control device that controls connection / disconnection of a clutch device by controlling supply and discharge of a working fluid to / from a clutch actuator capable of adjusting connection / disconnection of the clutch device.

  2. Description of the Related Art Conventionally, a technique for controlling transmission of driving force between an engine and a transmission mechanism by arranging a clutch between the engine and the transmission mechanism and controlling connection / disconnection of the clutch is known.

  There is also known a technique for controlling connection / disconnection of a clutch using a fluid (working fluid) such as air or hydraulic oil.

  For example, in a clutch control device that controls connection / disconnection of a clutch with a working fluid, according to a difference between a current stroke amount of the clutch actuator and a target stroke amount with respect to a flow control valve that controls the flow rate of the working fluid, A technique for outputting and controlling a control signal corresponding to a control output value obtained by adding a feedback control value calculated by a feedback control equation and a feedforward control value is known (see, for example, Patent Document 1).

JP 2012-2236 A

  For example, in a clutch device, the duty ratio indicating the ratio of the time during which the adjustment amount of the working fluid with respect to the clutch actuator is in the open state to the time of one cycle of the valve in the valve that can be switched between the open state and the closed state. Some things are realized by adjusting

  In such a clutch device, for example, the duty ratio is calculated by feedback control such as PID control using the difference between the target stroke amount of the clutch actuator and the actual stroke amount.

  Incidentally, some clutch devices in which the clutch actuator is driven by the working fluid to connect and disconnect the clutch have nonlinear clutch spring characteristics. For example, the stroke amount and the optimum duty ratio corresponding to the stroke amount are known. The relationship between and may be non-linear.

  As described above, when linear control such as PID control is performed using the stroke amount for the clutch device in which the relationship between the stroke amount and the duty ratio is nonlinear, the stroke amount of the clutch actuator is appropriately set. There is a possibility that the control cannot be performed and the responsiveness of the clutch device is lowered, or if an attempt is made to improve the responsiveness, an overshoot may occur.

  Therefore, an object of the present invention is to provide a technique capable of improving the response of a clutch device while preventing the occurrence of overshoot.

  In order to achieve the above object, a clutch control device according to an aspect of the present invention controls supply and discharge of a working fluid to and from a clutch actuator capable of adjusting connection / disconnection of the clutch device by supplying and discharging the working fluid. Thus, the clutch control device controls the connection / disconnection of the clutch device, wherein the clutch actuator has a piston that acts on the connection / disconnection of the clutch device by moving, and a cylinder that accommodates the piston, and one side of the piston The piston can be moved by supplying and discharging the working fluid to and from the pressure chamber surrounded by the surface and the cylinder, and is arranged between the pressure chamber and the supply or discharge side of the working fluid, Adjustment valve for adjusting the amount of working fluid in the pressure chamber, mass flow rate to be adjusted in the pressure chamber, pressure in the pressure chamber, and pressure Duty ratio information storage means for storing duty ratio information indicating a correspondence relationship with a duty ratio indicating a ratio of time in which the adjustment valve is in an open state with respect to the total time of one cycle of the adjustment valve for realizing a mass flow rate when pressure is applied An adjustment flow rate determining means for determining the mass flow rate to be adjusted in the pressure chamber based on the target movement amount of the piston and the actual movement amount of the piston, and the pressure based on the actual movement amount of the piston. Duty when operating the adjusting valve based on the pressure estimating means for estimating the pressure in the room, the mass flow determined by the adjusting flow determining means, the pressure estimated by the pressure estimating means, and the duty ratio information The duty ratio determining means for determining the ratio and the adjustment valve according to the duty ratio determined by the duty ratio determining means. And a control output means for outputting a signal.

  In the clutch control device, the adjustment flow rate determining means includes feedback means for detecting a feedback value related to the mass flow rate to be adjusted based on a difference between the target movement amount of the piston and the actual movement amount of the piston, The mass flow rate to be adjusted may be determined based on the feedback value.

  In the clutch control device, the adjustment flow rate determination means further includes feedforward means for detecting a feedforward value related to the mass flow rate to be adjusted based on the target movement amount of the piston, and the feedback value and the feedforward You may make it determine the mass flow rate which added the value as the mass flow rate which should adjust a pressure chamber.

  According to the present invention, it is possible to improve the response of the clutch device while preventing the occurrence of overshoot.

It is a typical lineblock diagram of a clutch system provided with a clutch control device concerning a 1st embodiment of the present invention. It is a functional lineblock diagram of ECU concerning a 1st embodiment of the present invention. It is a flowchart of the clutch disengagement process which concerns on 1st Embodiment of this invention. It is a flowchart of the clutch engagement process which concerns on 1st Embodiment of this invention. It is a typical block diagram of a clutch system provided with the clutch control apparatus which concerns on 2nd Embodiment of this invention.

  Hereinafter, a clutch control device according to an embodiment of the present invention will be described with reference to the accompanying drawings. The same parts are denoted by the same reference numerals, and their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  FIG. 1 is a schematic configuration diagram of a clutch system including a clutch control device according to a first embodiment of the present invention.

  The clutch system 1 includes a clutch device 10, a clutch actuator 20, a clutch control device 2, and a stroke sensor 18.

  The clutch device 10 includes a flywheel 12, a clutch disk 13, a pressure plate 14, a clutch cover 15, a diaphragm spring 16, and a release bearing 17.

  The flywheel 12 is connected to a crankshaft 11 to which an engine driving force (not shown) is transmitted so as to be integrally rotatable. A clutch cover 15 is fixed to the outer peripheral edge of the flywheel 12 on the side opposite to the crankshaft 11.

  The clutch disk 13 is disposed coaxially with the crankshaft 11 and is attached to an input shaft 31 of a transmission (not shown) which is spline-fitted so as to be axially movable and integrally rotatable, and an outer peripheral portion of the mounting portion 13A. And an annular disc main body portion 13B fixed to each other, and a friction plate 13C fixed to both surfaces of the outer edge portion of the disc main body portion 13B.

  The pressure plate 14 is disposed on the opposite side of the clutch disk 13 from the flywheel 12 so as to be in contact with the friction plate 13C. An outer edge portion of a diaphragm spring 16 is disposed on a surface of the pressure plate 14 opposite to the flywheel 12 so that the outer edge of the diaphragm spring 16 can come into contact with the pressure plate 14. When the pressure plate 14 is pressed by the diaphragm spring 16, the clutch disc 13 is moved to the flywheel. 12 can be pressed. When not pressed by the diaphragm spring 16, the pressure plate 14 is moved to the side opposite to the flywheel 12 by a spring (not shown) so that the clutch disk 13 is not pressed against the flywheel 12. .

  The diaphragm spring 16 is a substantially conical spring member in an unloaded state, and an intermediate portion between the inner edge portion and the outer edge portion is attached to the clutch cover 15. The outer edge portion of the diaphragm spring 16 is disposed so as to contact the side opposite to the flywheel 12 of the pressure plate 14, and the inner edge portion of the diaphragm spring 16 is disposed so as to contact the surface of the release bearing 17 on the flywheel 12 side. Has been.

  In the present embodiment, when the release bearing 17 does not press the inner edge of the diaphragm spring 16 toward the flywheel 12, the outer edge of the diaphragm spring 16 presses the pressure plate 14 toward the flywheel 12, and the clutch disk 13 is brought into pressure contact with the flywheel 12, that is, the clutch device 10 is brought into a contact state. On the other hand, when the release bearing 17 presses the inner edge of the diaphragm spring 16 toward the flywheel 12, the outer edge of the diaphragm spring 16 moves to the opposite side of the flywheel 12, and the outer edge of the diaphragm spring 16 moves. The pressure plate 14 is not pressed, and the clutch disc 13 is not pressed against the flywheel 12, that is, the clutch device 10 is disconnected.

  The release bearing 17 is configured such that the inner ring flywheel 12 side comes into contact with the inner edge of the diaphragm spring 16, and the outer ring flywheel 12 side is connected to a piston 22, which will be described later, of the clutch actuator 20. The spring 16 and the piston 22 can rotate relative to each other, and can move in the axial direction of the input shaft 31 as the piston 22 moves in the axial direction.

  The clutch actuator 20 includes a cylinder 21 that is disposed around the input shaft 31 so as to be relatively rotatable, and a piston 22 that is movable in the axial direction within the cylinder 21. A pressure chamber 23 is formed by the surface of the piston 22 opposite to the flywheel 12 and the inner wall of the cylinder 21, and is opened by the outer peripheral surface of the piston 22, the surface of the flywheel 12, and the inner wall of the cylinder 21. A chamber 24 is formed.

  The cylinder 21 is provided with an air supply pipe 25 for supplying air (an example of a working fluid) into the pressure chamber 23 and an exhaust pipe 26 for discharging air from the pressure chamber 23. . The cylinder 21 is formed with an open hole 21 </ b> A that allows the open chamber 24 to communicate with the outside (for example, the outside at atmospheric pressure).

  According to the clutch actuator 20, by supplying air into the pressure chamber 23, the piston 22 can be moved to the flywheel 12 side to disengage the clutch device 10, and the air is discharged from the pressure chamber 23. By doing so, the piston 22 can be moved to the opposite side to the flywheel 12, and the clutch apparatus 10 can be made into a contact state.

  The clutch control device 2 includes a valve (flow rate adjustment valve, supply valve) 41 arranged in parallel between an air supply side for supplying air and an air supply pipe 25, an exhaust side for exhausting air, and an exhaust. A valve (flow rate adjusting valve, discharge valve) 42 disposed in parallel with the piping 26 for use and an electronic control unit (ECU) 50 for controlling the valves 41 and 42 are provided.

  The valve 41 communicates the supply side and the pressure chamber 23 to supply air (supply state), and shuts off the supply side and the pressure chamber 23 to stop air supply (supply stop state). ) And can be switched to. In the present embodiment, the valve 41 can be switched between a supply state and a supply stop state under the control of the ECU 50, and the ratio of the time during which the valve 41 is in the supply state for the entire time of one cycle (Duty ratio). ) Can be adjusted to adjust the air supply amount.

  The valve 42 communicates the exhaust side and the pressure chamber 23 to discharge air (discharge state), and shuts off the exhaust side and the pressure chamber 23 to stop air discharge (discharge stop state). You can switch to In the present embodiment, the valve 42 can be switched between a discharge state and a discharge stop state under the control of the ECU 50, and the ratio of the time during which the valve 42 is in the discharge state for the entire time of one cycle (Duty ratio). ) Can be changed to adjust the air discharge amount.

  The stroke sensor 18 detects the amount of movement (stroke amount) from the predetermined reference position of the piston 22 of the clutch actuator 20. The stroke sensor 18 notifies the ECU 50 of the detected stroke amount.

  Next, the ECU 50 will be described in detail.

  FIG. 2 is a functional configuration diagram of the ECU according to the first embodiment of the present invention.

  The ECU 50 controls connection / disconnection of the clutch device 10 and includes a known CPU, ROM, RAM, input port, output port, and the like.

  The ECU 50 includes a clutch operation determination unit 51 and a valve control unit 52 as some functional elements. Each of these functional elements will be described as being included in the ECU 50 that is an integral piece of hardware, but any one of them can be provided in separate hardware.

  The clutch operation determination unit 51 determines whether it is necessary to start the clutch disengagement operation based on the vehicle speed from a vehicle speed sensor (not shown), the accelerator operation amount from the accelerator opening sensor, and the like, and starts the clutch disengagement operation. Is required, the fact is notified to the valve control unit 52. Further, the clutch operation determination unit 51 determines whether or not the clutch engagement operation needs to be started (for example, whether or not the shift of the transmission is completed), and when the clutch engagement operation needs to be started. Notifies the valve control unit 52 to that effect.

  When the valve control unit 52 receives a notification from the clutch operation determination unit 51 to start the clutch disengagement operation, the valve control unit 52 executes control processing for the valve 41 and starts the clutch engagement operation from the clutch operation determination unit 51. When the notification to the effect is received, the control process is executed for the valve 42.

  The valve control unit 52 includes a target value setting unit 53, an adjustment flow rate determination unit 54 as an example of adjustment flow rate determination unit, a pressure estimation unit 59 as an example of pressure estimation unit, and an example of duty ratio information storage unit. A duty ratio map storage unit 60, a duty ratio determination unit 61 as an example of a duty ratio determination unit, and an output unit 62 as an example of a control output unit.

The target value setting unit 53 and the target value X _trgt of the movement amount of the piston 22 corresponding to the disengagement operation of the clutch device 10 or the contact operation of the clutch device 10 are determined and output to the adjustment flow rate determination unit 54.

The adjustment flow rate determination unit 54 adjusts the air in the pressure chamber 23 based on the target value X _trgt input from the target value setting unit 53 and the actual movement amount X of the piston 22 input from the stroke sensor 18 ( The adjustment flow rate (mass flow rate) σ to be supplied or discharged) is determined.

  The adjusted flow rate determination unit 54 includes a feed forward unit 55 as an example of a feed forward unit, a calculation unit 56, a PID control unit 57 as an example of a feedback unit, and a calculation unit 58.

The feedforward unit 55 determines a feedforward value σ _ff related to the adjustment flow rate corresponding to the target value X _trgt input from the target value setting unit 53, and outputs it to the calculation unit 58. The correspondence relationship between the target value X _trgt and the feedforward value σ _ff can be experimentally grasped in advance.

The calculation unit 56 calculates the difference between the target value X _trgt input from the target value setting unit 53 and the stroke amount X input from the stroke sensor 18 and outputs the difference to the PID control unit 57.

The PID control unit 57 receives the difference between the target value X _trgt and the stroke amount X from the calculation unit 56 and executes PID control (Proportional-Integral-Differential Controller) to obtain a feedback value σ _fb related to the adjusted flow rate. Determine and output to the calculation unit 58.

The calculation unit 58 adds the feed forward value σ _ff input from the feed forward unit 55 and the feedback value σ _fb input from the PID control unit 57 to calculate an adjustment flow rate σ for adjusting the pressure chamber 23. The adjusted flow rate σ is output to the duty ratio determining unit 61.

The pressure estimation unit 59 estimates the pressure value (estimated value) P ^{^} _actuator in the pressure chamber 23 based on the movement amount X of the piston 22 detected by the stroke sensor 18. Here, as a method of estimating the pressure in the pressure chamber 23 from the movement amount X, a table showing the correspondence relationship between the movement amount X and the pressure in the pressure chamber 23 corresponding to the movement amount X in advance is shown in the ECU 50. The pressure value P ^{^} _actuator of the pressure chamber 23 corresponding to the movement amount X may be obtained from the table, or the pressure value P ^{^} _actuator is estimated from the movement amount X. Alternatively, a state estimator such as a Kalman filter may be prepared, and the pressure value P ^{^} _actuator may be obtained by passing the movement amount X and the adjustment flow rate σ through the state estimator.

The duty ratio map storage unit 60 operates the valves (41, 42) in order to adjust the adjusted flow rate in the pressure state and the pressure P _actuator in the pressure chamber 23 and the pressure P _actuator in the pressure chamber 23. A duty ratio map showing a relationship with a duty ratio (Duty ratio) at the time of performing is stored. The duty ratio map storage unit 60 is configured by a memory (not shown) of the ECU 50, for example.

The duty ratio determination unit 61 refers to the duty ratio map in the duty ratio map storage unit 60 using the adjustment flow rate σ input from the calculation unit 58 and the pressure value P ^{^} _actuator input from the pressure estimation unit 59. Thus, the duty ratio for operating the valve is determined and output to the output unit 62. According to the duty ratio determining unit 61, it is possible to appropriately determine a duty ratio having a non-linear relationship with respect to the adjusted flow rate σ.

  The output unit 62 outputs a control signal for operating the valve to be controlled (the valve 41 when the clutch is disengaged and the valve 42 when the clutch is engaged) according to the duty ratio input from the duty ratio determining unit 61.

  Next, the processing operation in the clutch system 1 according to the first embodiment will be described.

  FIG. 3 is a flowchart of the clutch disengagement process according to the first embodiment of the present invention.

  The clutch disengagement process is started, for example, when the vehicle power is turned on (key switch of the ignition switch is turned on).

  The clutch operation determination unit 51 determines whether or not it is necessary to start the clutch disengagement in order to perform a shift by the transmission based on a vehicle speed from a vehicle speed sensor (not shown), an accelerator opening from an accelerator opening sensor, and the like. However, if it is not necessary to start the clutch disengagement (step S11: NO), the process proceeds to step S11.

  On the other hand, when it is necessary to start the clutch disengagement (step S11: YES), the clutch operation determination unit 51 determines whether or not the clutch disengagement is completed (step S12).

As a result, when the clutch disengagement is not completed (step S12: NO), the clutch operation determination unit 51 notifies the valve control unit 52 of the notification that the clutch disengagement operation is executed, and the valve that has received the notification. The controller 52 controls the supply side valve 41 (step S13), and advances the process to step S12. Specifically, control of the supply side valve 41 in the valve control unit 52 is performed as follows. That is, the target value setting unit 53 outputs a target value X _trgt that is a target in the clutch disengagement operation, and the adjustment flow rate determination unit 54 is based on the target value X _trgt and the movement amount X from the stroke sensor 18. σ is output, the pressure estimation unit 59 estimates the pressure value P ^{^} _actuator based on the movement amount X, the duty ratio determination unit 61 refers to the duty ratio map of the duty ratio map storage unit 60, and the adjustment amount σ And the pressure value P ^{^} _actuator , the duty ratio is determined, and the output unit 62 controls the operation of the valve 41 based on the determined duty ratio.

  On the other hand, when the clutch disengagement has been completed (step S12: YES), the clutch operation determination unit 51 notifies the valve control unit 52 that the clutch operation is to be stopped, and the valve control unit that has received the notification. 52 stops the supply side valve (here, the valve 41) (step S14), and advances the process to step S11.

  FIG. 4 is a flowchart of the clutch engagement process according to the first embodiment of the present invention.

  The clutch engagement process is started, for example, when the vehicle power is turned on (the key switch of the ignition switch is turned on).

  The clutch operation determination unit 51 determines whether or not the clutch engagement needs to be started after completion of the shift by the transmission (step S21), and when it is not necessary to start the clutch engagement (step S21: NO) ), The process proceeds to step S21.

  On the other hand, when it is necessary to start the clutch engagement (step S21: YES), the clutch operation determination unit 51 determines whether or not the clutch engagement is completed (step S22).

As a result, when the clutch engagement is not completed (step S22: NO), the clutch operation determination unit 51 notifies the valve control unit 52 of the notification that the clutch engagement operation is to be executed, and the valve that has received the notification. The control unit 52 controls the exhaust side valve 42 (step S23), and advances the process to step S22. Specifically, the control of the exhaust side valve 42 in the valve control unit 52 is performed as follows. That is, the target value setting unit 53 outputs a target value X _trgt that is a target in the clutch disengagement operation, and the adjustment flow rate determination unit 54 is based on the target value X _trgt and the movement amount X from the stroke sensor 18. σ is output, the pressure estimation unit 59 estimates the pressure value P ^{^} _actuator based on the movement amount X, the duty ratio determination unit 61 refers to the duty ratio map of the duty ratio map storage unit 60, and the adjusted flow rate σ And the pressure value P ^{^} _actuator , the duty ratio is determined, and the output unit 62 controls the operation of the valve 42 based on the determined duty ratio.

  On the other hand, when the clutch engagement is completed (step S22: YES), the clutch operation determination unit 51 notifies the valve control unit 52 of the notification that the clutch engagement operation is stopped, and the valve control that has received the notification. The unit 52 stops the valve on the exhaust side (here, the valve 42) (step S24), and advances the process to step S21.

As described above, according to the clutch control device 2 according to the present embodiment, the duty ratio map storage unit 60 adjusts the flow rate to be adjusted in the pressure chamber 23, the pressure in the pressure chamber 23, and the pressure chamber 23. Stores a duty ratio map indicating the correspondence with the duty ratio indicating the ratio of the time during which the valve for adjustment (41, 42) is in an open state with respect to the entire time of one cycle for realizing the mass flow rate at the time of pressure. Then, the adjustment flow rate determination unit 54 determines the adjustment flow rate σ to be adjusted in the pressure chamber 23 based on the target movement amount (target value X _trgt ) of the piston 22 and the actual movement amount X of the piston 22. Then, the pressure estimation unit 59 estimates the pressure in the pressure chamber 23 based on the actual movement amount X of the piston 22, and the duty ratio determination unit 61 is determined by the adjustment flow rate determination unit 54. Based on the determined adjustment flow rate σ, the pressure value P ^{^} _actuator estimated by the pressure estimation unit 59, and the duty ratio map, the duty ratio for operating the adjustment valves (41, 42) is determined. Since the output unit 62 outputs a control signal to the adjustment valve in accordance with the determined duty ratio, even if the relationship between the adjustment flow rate and the duty ratio is non-linear, the duty ratio suitable for the adjustment flow rate Since the air in the pressure chamber 23 can be adjusted appropriately according to the duty ratio, the occurrence of overshoot can be prevented and the responsiveness of the clutch device 10 can be improved.

  Next, a clutch system according to a second embodiment will be described. In addition, the same code | symbol is attached | subjected to the part similar to the clutch system which concerns on 1st Embodiment, and those names and functions are also the same.

  FIG. 5 is a schematic configuration diagram of a clutch system including the clutch control device according to the second embodiment of the present invention.

  The clutch system according to the second embodiment mainly differs from the clutch system according to the first embodiment in the arrangement and configuration of the clutch actuator 70.

  The clutch actuator 70 is disposed not at a position surrounding the input shaft 31 but at a position away from the input shaft 31. The clutch actuator 70 is a cylinder 71, a piston 72 that is accommodated in the cylinder 71 and is movable in the axial direction of the input shaft 31, a piston rod 73 that is connected to the surface of the piston 72 opposite to the flywheel 12, A bearing holding portion 32 that is arranged around the input shaft 31 so as to be movable in the axial direction of the input shaft 31 and is connected to the outer ring of the release bearing 12 on the side opposite to the flywheel 12, and one end coupled to the piston rod 73, The other end is connected to a surface of the bearing holding portion 32 opposite to the flywheel 12 and includes a clutch lever 33 that can rotate about a predetermined support shaft 34.

  In the clutch actuator 70, a pressure chamber 74 is formed by the surface of the piston 72 on the flywheel 12 side and the inner wall of the cylinder 71, and the surface of the piston 72 opposite to the flywheel 12 and the inner wall of the cylinder 71. An open chamber 75 is formed.

  The cylinder 71 is provided with an air supply pipe 25 for supplying air (an example of a working fluid) into the pressure chamber 74 and an exhaust pipe 26 for discharging air from the pressure chamber 74. . The cylinder 71 has an open hole 71A that allows the open chamber 75 to communicate with the outside (for example, the outside at atmospheric pressure).

  According to the clutch actuator 70, the piston 72 can be moved to the opposite side of the flywheel 12 by supplying air into the pressure chamber 74. When the piston 72 moves to the side opposite to the flywheel 12, the release bearing 17 moves to the flywheel 12 side via the piston rod 73, the clutch lever 33, and the bearing holding portion 32, and presses the inner edge of the diaphragm spring 16. Therefore, the outer edge portion of the diaphragm spring 16 does not press the pressure plate 14, and the clutch device 10 is disconnected.

  On the other hand, by discharging air from the pressure chamber 74, the piston 72 can be moved to the flywheel 12 side. When the piston 72 moves to the flywheel 12 side, the release bearing 17 moves to the opposite side of the flywheel 12 via the piston rod 73, the clutch lever 33, and the bearing holding portion 32, and presses the inner edge of the diaphragm spring 16. Therefore, the outer edge portion of the diaphragm spring 16 presses the pressure plate 14, and the clutch device 10 is brought into a contact state.

  Also in the clutch system according to the second embodiment, the same effect as the clutch system according to the first embodiment can be obtained by the control by the clutch control device 2.

  In addition, this invention is not limited to the above-mentioned embodiment, In the range which does not deviate from the meaning of this invention, it can change suitably and can implement.

  For example, in the above-described embodiment, by supplying air to the pressure chamber 23 (74) of the cylinder 21 (71) of the clutch actuator 20 (70), the clutch device 10 is turned off, and the clutch device 10 is exhausted. However, the present invention is not limited to this, and the clutch device is brought into the contact state by supplying air to the pressure chamber of the cylinder of the clutch actuator, and then the clutch system is exhausted. The clutch system may be configured to put the device in a disconnected state.

  In the above embodiment, the adjustment flow rate determination unit 54 executes the PID control as the feedback control. However, the present invention is not limited to this, and the feedback control different from the PID control may be executed. Good.

  In the above embodiment, a clutch device using a diaphragm spring has been described as an example. However, the present invention is not limited to this, and a clutch device using a coil spring may be used.

  Moreover, in the said embodiment, although the example which used air as a working fluid was shown, this invention is not restricted to this, You may make it use working oil as a working fluid.

DESCRIPTION OF SYMBOLS 1 Clutch system 2 Clutch control apparatus 10 Clutch apparatus 11 Crankshaft 12 Flywheel 13 Clutch disk 14 Pressure plate 15 Clutch cover 16 Diaphragm spring 17 Release bearing 18 Stroke sensor 20 Clutch actuator 21 Cylinder 22 Piston 23 Pressure chamber 24 Open chamber 25 Air supply Piping 26 exhaust piping 31 input shaft 41, 42 valve 50 ECU
REFERENCE SIGNS LIST 51 Clutch operation determination unit 52 Valve control unit 53 Target value setting unit 54 Adjustment flow rate determination unit 55 Feed forward unit 56 Calculation unit 57 PID control unit 58 Calculation unit 59 Pressure estimation unit 60 Duty ratio map storage unit 61 Duty ratio determination unit 62 Output Part

Claims (3)

A clutch control device for controlling connection / disconnection of the clutch device by controlling supply / discharge of the working fluid to / from a clutch actuator capable of adjusting connection / disconnection of the clutch device by supplying and discharging the working fluid,
The clutch actuator has a piston that acts to connect and disconnect the clutch device by moving, and a cylinder that houses the piston, and a pressure chamber surrounded by a surface on one side of the piston and the cylinder. The piston can be moved by supplying and discharging the working fluid,
An adjustment valve disposed between the pressure chamber and the supply side or discharge side of the working fluid, for adjusting the amount of the working fluid in the pressure chamber;
The mass flow rate to be adjusted in the pressure chamber, the pressure in the pressure chamber, and the pressure chamber in an open state with respect to the entire time of one cycle of the adjustment valve for realizing the mass flow rate at the time of the pressure. Duty ratio information storage means for storing duty ratio information indicating a correspondence relationship with a duty ratio indicating a ratio of time;
An adjustment flow rate determining means for determining a mass flow rate to be adjusted in the pressure chamber based on a target movement amount of the piston and an actual movement amount of the piston;
Pressure estimating means for estimating a pressure in the pressure chamber based on an actual movement amount of the piston;
A duty ratio for determining the duty ratio for operating the adjustment valve based on the mass flow determined by the adjustment flow determination means, the pressure estimated by the pressure estimation means, and the duty ratio information A determination means;
Control output means for outputting a control signal to the adjusting valve according to the duty ratio determined by the duty ratio determining means;
A clutch control device comprising: The adjustment flow rate determining means includes feedback means for detecting a feedback value related to a mass flow rate to be adjusted based on a difference between a target movement amount of the piston and an actual movement amount of the piston, and the feedback value The clutch control device according to claim 1, wherein the mass flow rate to be adjusted is determined based on the parameter. The adjustment flow rate determination means further includes feedforward means for detecting a feedforward value related to a mass flow rate to be adjusted based on a target movement amount of the piston, and adds the feedback value and the feedforward value. The clutch control device according to claim 2, wherein the mass flow rate is determined as a mass flow rate for adjusting the pressure chamber.

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