WO2010070974A1 - シフトバイワイヤ装置およびこれを搭載する変速機装置 - Google Patents
シフトバイワイヤ装置およびこれを搭載する変速機装置 Download PDFInfo
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- WO2010070974A1 WO2010070974A1 PCT/JP2009/067899 JP2009067899W WO2010070974A1 WO 2010070974 A1 WO2010070974 A1 WO 2010070974A1 JP 2009067899 W JP2009067899 W JP 2009067899W WO 2010070974 A1 WO2010070974 A1 WO 2010070974A1
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- function unit
- shift
- unit
- shaft
- monitoring function
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K20/00—Arrangement or mounting of change-speed gearing control devices in vehicles
- B60K20/02—Arrangement or mounting of change-speed gearing control devices in vehicles of initiating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1208—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures with diagnostic check cycles; Monitoring of failures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1256—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected
- F16H2061/126—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected the failing part is the controller
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
- F16H2061/326—Actuators for range selection, i.e. actuators for controlling the range selector or the manual range valve in the transmission
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
- F16H59/10—Range selector apparatus comprising levers
- F16H59/105—Range selector apparatus comprising levers consisting of electrical switches or sensors
Definitions
- the present invention relates to a shift-by-wire device and a transmission device equipped with the shift-by-wire device, and more specifically, can communicate with a management electronic control unit that inputs a signal from a shift position sensor that detects a requested shift position requested by a driver.
- the present invention relates to a shift-by-wire device that is connected and operates a target shaft by driving and controlling a manual shaft based on a shift command from the management electronic control unit, and a transmission device that includes an automatic transmission and a shift-by-wire device.
- this type of transmission device is mounted on a vehicle including a shift-by-wire system having two by-wire ECUs that drive and control a manual valve of a hydraulic circuit, and an automatic transmission control system having an automatic transmission ECU.
- the shift-by-wire system is provided with two drive units that individually generate a rotational force in the electric motor that drives the manual valve, and two by-wire ECUs are electrically connected to each other via the two drive units and the switching device.
- the automatic transmission control system monitors the two by-wire ECUs of the shift-by-wire system, and when an abnormality occurs in one of the two by-wire ECUs, the other normal by-wire ECU drives and controls the manual valve. By switching the switching device, the abnormality of the by-wire ECU is dealt with. JP 2006-335157 A
- the manual valve can be driven and controlled by the other normal by-wire ECU, but an extra ECU that is used only at the time of an abnormality is disposed. Since it is necessary to provide a switching device for switching the driving ECU of the two ECUs, the device becomes larger and complicated. In particular, since the transmission device is mounted on a vehicle, there is a limit to the space in which the ECU is arranged, and thus the above-described problem becomes more prominent.
- the shift-by-wire device of the present invention and the transmission device equipped with the shift-by-wire device are mainly intended to appropriately deal with abnormalities related to a control device that drives and controls a manual shaft for operating an operation target without providing an extra control device.
- the shift-by-wire device of the present invention and the transmission device on which the shift-by-wire device is mounted employ the following means in order to achieve the above-described main object.
- the shift-by-wire device of the present invention is Connected to a management electronic control unit that inputs a signal from a shift position sensor that detects a requested shift position requested by the driver, and drives a manual shaft based on a shift command from the management electronic control unit
- a shift-by-wire device that operates an operation target by controlling,
- a shaft position sensor for detecting the rotation angle of the manual shaft;
- a drive unit for driving the actuator of the manual shaft;
- the rotation angle of the shaft from the shaft position sensor is input and a shift command is received from the management electronic control unit, and the input rotation angle of the shaft is transmitted to the management electronic control unit.
- a calculation function unit having a calculation CPU for controlling the drive unit based on a rotation angle and the received shift command;
- the rotation angle of the shaft from the shaft position sensor is input, the presence / absence of abnormality in the calculation function unit is monitored, and the input rotation angle of the shaft is determined when it is determined that the calculation function unit is abnormal.
- a monitoring function unit having a monitoring CPU for transmitting to the management electronic control unit.
- the shaft rotation angle is input from the shaft position sensor, the shift command is received from the management electronic control unit, and the input shaft rotation angle is transmitted to the management electronic control unit and input.
- a calculation function unit having a calculation CPU for controlling the drive unit that drives the actuator of the manual shaft, and a calculation function by inputting the rotation angle of the shaft from the shaft position sensor
- a monitoring function unit having a monitoring CPU for transmitting the rotation angle of the shaft input to the management electronic control unit when it is determined that there is an abnormality in the arithmetic function unit.
- the electronic control unit for management regardless of whether there is an abnormality in the arithmetic function unit Since it is possible to receive the rotation angle of the shaft from the shaft position sensor, it is possible to take appropriate action in response to the abnormality.
- the apparatus can be made more compact as compared with a dual system composed of an actuator that drives the manual shaft and an ECU that controls the actuator.
- the “abnormality of the arithmetic function unit” includes an abnormality of the arithmetic CPU and an abnormality of communication with the management electronic control unit.
- the calculation function unit and the monitoring function unit are units that operate using different power sources, and the monitoring function unit has an abnormality in the power supply that supplies power to the calculation function unit. It can also be a part that monitors In this way, it is possible to deal with power supply abnormalities.
- the manual shaft actuator is an electric motor having a rotor, and includes a rotational position sensor that detects a rotational position of the rotor to control the electric motor, and the shaft
- the position sensor is a sensor that operates by receiving power from the power source for the arithmetic CPU
- the rotational position sensor is a sensor that operates by receiving power from the power source for the monitoring CPU.
- the function unit is a unit that inputs the rotation position of the rotor from the rotation position sensor and controls the drive unit based on the input rotation position, and the monitoring function unit supplies power to the arithmetic function unit If the rotation position of the rotor is input from the rotation position sensor It can be assumed to be part of transmitting to the management electronic control unit rotating angle estimates of the shaft based on the rotational position the input to. In this way, even when an abnormality occurs in the power source for the arithmetic CPU and the shaft position sensor does not operate, the rotation angle of the manual shaft can be transmitted to the management electronic control unit.
- the monitoring function unit may be a unit that transmits a result of the determination to the management electronic control unit when it is determined as abnormal by monitoring.
- the management electronic control unit can take measures such as notifying the driver that an abnormality has occurred in the shift-by-wire device.
- the monitoring function unit can be a unit that can permit and prohibit transmission of a drive signal from the arithmetic function unit to the drive unit. By so doing, it is possible to more reliably prevent malfunction of the arithmetic function unit.
- the monitoring function unit permits transmission of a drive signal to the drive unit when determining that no abnormality has occurred in the calculation function unit, and It can also be a unit that prohibits transmission of a drive signal to the drive unit when it is determined that an abnormality has occurred.
- the monitoring function unit receives a shift command from the management electronic control unit, and when the manual shaft is driven by the actuator, the rotation direction of the manual shaft is changed. Transmission of a drive signal to the drive unit may be prohibited when the rotation direction is different from the input shift command, and the monitoring function unit may receive a shift command from the management electronic control unit.
- the transmission of the drive signal to the drive unit is prohibited when the rotation angle of the manual shaft exceeds the rotation angle corresponding to the input shift command. It can also be. By doing so, it is possible to cope with an abnormality in the arithmetic function unit even while the manual shaft is being driven by the drive signal of the arithmetic function unit.
- the driving signal is transmitted to the driving unit when the permission signal is input from the monitoring function unit, and the driving signal is transmitted when the permission signal is not input.
- the monitoring function unit is a unit that outputs an off signal as the permission signal via an inverting circuit
- the arithmetic function unit is the monitoring function It is also possible to determine whether or not a predetermined abnormality has occurred in the unit, and to reset the monitoring function unit when it is determined that the predetermined abnormality has occurred in the monitoring function unit. In this way, the manual shaft can be driven even when the permission signal is not output due to a predetermined abnormality of the monitoring function unit.
- the reset of the monitoring function unit includes not only what is directly performed by the calculation function unit but also what is performed by the management electronic control unit when the calculation function unit instructs the management electronic control unit.
- the arithmetic function unit receives a permission signal from the monitoring function unit for a predetermined time or more when it is not determined that the predetermined abnormality has occurred in the monitoring function unit. It can also be a unit that resets the monitoring function unit when is not output. In this way, it is possible to cope with the occurrence of any abnormality in the monitoring function unit other than the predetermined abnormality.
- the drive unit, the calculation function unit, and the monitoring function unit may be configured as a single electronic control unit. In this way, the device can be made more compact.
- the operation target may be a parking lock mechanism that operates as the manual shaft is driven.
- the transmission apparatus of the present invention is An automatic transmission capable of transmitting power by a clutch that operates using a fluid pressure supplied through a manual valve linked to a manual shaft;
- the shift-by-wire device of the present invention according to any one of the above-described embodiments for driving the manual shaft, that is, basically, management for inputting a signal from a shift position sensor that detects a requested shift position requested by the driver.
- a shift-by-wire device that is connected to an electronic control unit for communication and that controls driving of a manual shaft based on a shift command from the management electronic control unit, and a shaft position sensor that detects a rotation angle of the manual shaft;
- a drive unit that drives the actuator of the manual shaft, and a rotation angle of the shaft from the shaft position sensor are input, and a shift command is received from the management electronic control unit.
- a shift-by-wire device comprising:
- the management electronic control unit is an arithmetic function unit. Compared to the effect of being able to receive the rotation angle of the shaft from the shaft position sensor regardless of whether there is an abnormality or the actuator that drives the manual valve and the ECU that controls this, the system is dual. The effect which can be made more compact can be exhibited.
- FIG. 1 is a configuration diagram showing an outline of the configuration of an automobile 10 equipped with a transmission apparatus as one embodiment of the present invention.
- 4 is an explanatory diagram showing an example of an operation table of the automatic transmission 20.
- FIG. 2 is a configuration diagram showing an outline of a configuration of a hydraulic circuit 50 of an automatic transmission 20.
- FIG. 2 is a configuration diagram showing an outline of a configuration of a drive system for driving a manual valve 58.
- FIG. 2 is a configuration diagram showing an outline of a configuration of an SBWECU 100.
- 5 is a flowchart illustrating an example of a calculation function unit side processing routine executed by a calculation function unit 110 of the SBWECU 100. It is explanatory drawing which shows an example of the relationship between shaft position POS, the motor rotation frequency Nm, and valve position VP. 5 is a flowchart illustrating an example of a monitoring function unit side processing routine executed by a monitoring function unit 130 of the SBWECU 100. It is a block diagram which shows the outline of a structure of SBWECU100B of a modification. It is a block diagram which shows the outline of a structure of SBWECU100C of a modification. It is a block diagram which shows the outline of a structure of SBWECU100D of a modification.
- FIG. 1 It is a block diagram which shows the outline of a structure of SBWECU100E of a modification. It is a flowchart which shows the calculation function part side processing routine of a modification. It is a flowchart which shows the monitoring function part side processing routine of a modification. It is a flowchart which shows an example of a gate interruption
- 2 is a configuration diagram showing an outline of a configuration of a drive system of a parking lock mechanism 180.
- FIG. 1 is a block diagram showing an outline of the configuration of an automobile 10 equipped with a transmission apparatus as an embodiment of the present invention
- FIG. 2 shows an operation table of the automatic transmission 20
- FIG. 3 shows the hydraulic pressure of the automatic transmission 20
- FIG. 4 is a configuration diagram showing an outline of the configuration of the circuit 50
- FIG. 4 is a configuration diagram showing an outline of the configuration centering on the manual valve 58 of the automatic transmission 20.
- an automobile 10 according to an embodiment includes an engine 12 as an internal combustion engine that outputs power by explosion combustion of a hydrocarbon-based fuel such as gasoline or light oil, and an electronic control for the engine that controls the operation of the engine 12.
- a unit (hereinafter referred to as engine ECU) 16 a torque converter 24 with a lock-up clutch attached to the crankshaft 14 of the engine 12, an input shaft 21 is connected to the output side of the torque converter 24, and a gear mechanism 26
- a stepped automatic transmission 20 is connected to the drive wheels 18a and 18b via the differential gear 28 and the power input to the input shaft 21 is shifted and transmitted to the output shaft 22, and the automatic transmission 20 is controlled.
- the control unit (hereinafter, ATECU hereinafter) 29 and a shift-by-wire system electronic control unit (hereinafter, referred SBWECU) includes a 100, a main electronic control unit that controls the entire vehicle (hereinafter, referred to as main ECU) and 90.
- the engine ECU 16 is configured as a microprocessor centered on a CPU. In addition to the CPU, a ROM that stores a processing program, a RAM that temporarily stores data, an input / output port, And a communication port.
- the engine ECU 16 receives signals from various sensors necessary for controlling the operation of the engine 12, such as a rotational speed sensor attached to the crankshaft 14, via an input port.
- a drive signal to the throttle motor that adjusts the opening, a control signal to the fuel injection valve, an ignition signal to the spark plug, and the like are output via the output port.
- the engine ECU 16 communicates with the main ECU 90, controls the engine 12 by a control signal from the main ECU 90, and outputs data related to the operating state of the engine 12 to the main ECU 90 as necessary.
- the automatic transmission 20 is configured as a six-speed stepped transmission, and includes a single pinion type planetary gear mechanism 30, a Ravigneaux type planetary gear mechanism 40, and three clutches C 1, C 2. C3, two brakes B1 and B2, and a one-way clutch F1 are provided.
- the single pinion type planetary gear mechanism 30 includes a sun gear 31 as an external gear, a ring gear 32 as an internal gear arranged concentrically with the sun gear 31, and a plurality of gears meshed with the sun gear 31 and meshed with the ring gear 32.
- the pinion gear 33 and a carrier 34 that holds the plurality of pinion gears 33 so as to rotate and revolve freely.
- the sun gear 31 is fixed to the case, and the ring gear 32 is connected to the input shaft 21.
- the Ravigneaux type planetary gear mechanism 40 includes two sun gears 41a and 41b as external gears, a ring gear 42 as an internal gear, a plurality of short pinion gears 43a meshing with the sun gear 41a, a sun gear 41b and a plurality of short pinion gears 43a.
- the sun gear 41a includes a plurality of long pinion gears 43b that mesh with the ring gear 42 and a carrier 44 that holds the plurality of short pinion gears 43a and the plurality of long pinion gears 43b so as to rotate and revolve.
- Carrier 4 It is connected to the input shaft 21 via the clutch C2.
- the carrier 44 is connected to the case via the brake B2 and to the case via the one-way clutch F1.
- the clutches C1 to C3 are turned on / off (on is engaged and off is also called disengagement, the same applies hereinafter) and the brakes B1 and B2 are turned on / off. It is possible to switch between forward 1st gear to 6th gear, reverse and neutral.
- the first forward speed state is formed by turning on the clutch C1 and turning off the clutches C2 and C3 and the brakes B1 and B2 (turning on the brake B2 during engine braking).
- the second forward speed state can be formed by turning on the clutch C1 and the brake B1 and turning off the clutches C2, C3 and the brake B2, and the third forward speed state is determined by the clutch C1.
- C3 is turned on and the clutch C2 and the brakes B1, B2 are turned off.
- the fourth forward speed state is that the clutches C1, C2 are turned on and the clutch C3 and the brakes B1, B2 are turned on.
- the forward fifth speed state is achieved by turning on the clutches C2 and C3 and turning on the clutch C1 and the Can be formed by turning off the brakes B1 and B2.
- the state of the sixth forward speed is achieved by turning on the clutch C2 and the brake B1 and turning off the clutch C1, C3 and the brake B2. Can be formed.
- the reverse state can be formed by turning on the clutch C3 and the brake B2 and turning off the clutches C1 and C2 and the brake B1.
- the neutral state can be formed by turning off all the clutches C1 to C3 and the brakes B1 and B2.
- the clutches C1 to C3 and the brakes B1 and B2 of the automatic transmission 20 are driven by a hydraulic circuit 50.
- the hydraulic circuit 50 includes a mechanical oil pump 52 that draws hydraulic oil from the strainer 51 using the power from the engine 12 and pumps it, and the hydraulic oil pumped by the mechanical oil pump 52.
- a manual valve 58 having an input port 58a for input, a D-position output port 58b, and an R-position output port 58c, and a drive pressure PD from the D-position output port 58b of the manual valve 58 are input and regulated to clutch.
- a normal closed linear solenoid SLC2 that inputs and regulates the renoid SLC1, the drive pressure PD from the D-position output port 58b of the manual valve 58, and a normal that regulates and outputs the line pressure PL.
- the SLC2 pressure which is the output pressure from the linear solenoid SLC2
- the SLC2 pressure is output to the oil passage 79 and the output of the C3 relay valve 60 is output.
- the C2 relay valve 70 When the pressure is output to the oil passage 79, the C2 relay valve 70 shuts off the SLC2 pressure, the output pressure from the C2 relay valve 70 output to the oil passage 79, and the R-position output port 58c of the manual valve 58.
- a normally closed type on / off solenoid S2 for outputting a driving signal pressure to the C3 relay valve 60 and the B2 relay valve 80 using the modulator pressure PMOD inputted through the modulator valve is constituted.
- a check valve 59a is provided in the direction toward the B2 relay valve 80 in the oil passage between the R-position output port 58c of the manual valve 58 and the input port 82d of the B2 relay valve 80, and the check valve 59a.
- An orifice 59b is provided in parallel.
- the C3 relay valve 60 includes a signal pressure input port 62a for inputting a signal pressure from the on / off solenoid S2, an input port 62b for inputting an output pressure (SLC3 pressure) from the linear solenoid SLC3, and an output port 62c for outputting hydraulic pressure to the clutch C3. And a sleeve 62 formed with an output port 62d and a drain port 62e for outputting hydraulic pressure to the oil passage 69, a spool 64 that slides in the sleeve 62 in the axial direction, and a spring 66 that biases the spool 64 in the axial direction. It is comprised by.
- the spool 64 moves to the position shown in the left half region in the drawing by the urging force of the spring 66, and the input port 62b Is connected to the output port 62c (clutch C3 side) and the communication between the input port 62b and the output port 62d (C2 relay valve 70 side) is cut off, and the signal pressure is input from the on / off solenoid S2 to the signal pressure input port 62a.
- the signal pressure overcomes the urging force of the spring 66 and the spool 64 moves to the position shown in the right half region in the drawing to cut off the communication between the input port 62b and the output port 62c (clutch C3 side).
- the input port 62b communicates with the output port 62d (C2 relay valve 70 side).
- the output port 62c and the drain port 62e communicate with each other so that the hydraulic fluid on the clutch C3 side is drained. It has become.
- the C2 relay valve 70 includes a signal pressure input port 72a for inputting the signal pressure from the on / off solenoid S1, an input port 72b for inputting the output pressure output from the C3 relay valve 60 to the oil passage 69, and an output pressure from the linear solenoid SLC2.
- the spool 74 is configured to slide in the axial direction, and a spring 76 that biases the spool 74 in the axial direction.
- C2 relay valve 70 when the signal pressure is not inputted from the on / off solenoid S1 to the signal pressure input port 72a, the spool 74 is moved to the position shown in the left half region in the drawing by the urging force of the spring 76, and the input port 72b.
- C3 relay valve 60 side communicates with the output port 72e (B2 relay valve 80 side) and the input port 72c (linear solenoid SLC2 side) communicates with the output port 72d (clutch C2 side) from the on / off solenoid S1.
- the B2 relay valve 80 signals the signal pressure input port 82a for inputting the signal pressure from the on / off solenoid S2 and the signal pressure from the on / off solenoid S1 to the signal pressure input port 72a of the C2 relay valve 70 via the B2 relay valve 80.
- a sleeve 82 having an input port 82e for inputting output pressure and an output port 82f for outputting hydraulic pressure to the brake B2, a spool 84 that slides in the sleeve 82 in the axial direction, and biasing the spool 84 in the axial direction And a spring 86.
- the spool 84 In the B2 relay valve 80, when the signal pressure is not inputted from the on / off solenoid S2 to the signal pressure input port 82a, the spool 84 is moved to the position shown in the left half region in the drawing by the urging force of the spring 86, and the signal pressure input.
- the port 82b is shut off, the signal pressure to the signal pressure input port 72a of the C2 relay valve 70 is turned off, and the input port 82d (the R position output port 58 side of the manual valve 58) and the output port 82f (brake B2 side) are turned off.
- the signal pressure is input from the on / off solenoid S2 to the signal pressure input port 82a, the signal pressure overcomes the urging force of the spring 86, and the spool 86 is connected to the input port 82e (C2 relay valve 70 side).
- the S1 signal pressure input port 8 moves to the position shown in the right half of the figure.
- the signal pressure from the on / off solenoid S1 can be output to the signal pressure input port 72a of the C2 relay valve 70 via the signal pressure input port 82b and the signal pressure output port 82c.
- the input port 82d (the R position output port 58 side of the manual valve 58) is shut off, and the input port 82e (C2 relay valve 70 side) and the output port 82f (clutch C3 side) communicate with each other.
- the manual valve 58 has a manual plate 222 attached to the manual shaft 220 and a length (end portion) formed at a position (end) eccentric to the rotation axis of the manual shaft 220 on the manual plate 222.
- a spool 224 having an L-shaped hook 224a hooked in the hole 222a is formed at the tip thereof, and a land 226 formed in the spool 224.
- the manual shaft 220 is connected to a rotating shaft (rotor 124a) via a reduction gear 125.
- the manual plate 222 has a plate-shaped detent spring 234 whose base end is fixed to the case of the automatic transmission 20 by a bolt, and is rotatably attached to the distal end of the detent spring 234. And a detent mechanism 230 including a roller 236 pressed against a cam surface 232 in which valley portions are alternately formed.
- the ATECU 29 is configured as a microprocessor centered on a CPU. In addition to the CPU, a ROM that stores a processing program, a RAM that temporarily stores data, an input / output port, a communication And a port.
- the ATECU 29 receives input shaft rotational speed Nin from a rotational speed sensor attached to the input shaft 21 and output shaft rotational speed Nout from a rotational speed sensor attached to the output shaft 22 via an input port.
- the AT ECU 29 outputs a drive signal to the linear solenoid 56, SLC1 to SLC3, SLB1, a drive signal to the on / off solenoids S1, S2, and the like via an output port.
- the ATECU 29 communicates with the main ECU 90, controls the automatic transmission 20 (hydraulic circuit 50) by a control signal from the main ECU 90, and outputs data related to the state of the automatic transmission 20 to the main ECU 90 as necessary.
- the SBWECU 100 monitors an arithmetic function unit 110 including a CPU 112 as a central arithmetic processing circuit, an actuator function unit 120 that functions as an actuator for driving the manual valve 58, and mainly the arithmetic function unit 110. And a monitoring function unit 130.
- the arithmetic function unit 110 includes a 5V power supply circuit 114 that supplies power to each unit, and a CAN circuit 116 that performs CAN communication with the main ECU 90.
- the monitoring function unit 130 includes a monitoring CPU 132 for monitoring, a 5V power supply circuit 134 that supplies power to each unit, and a CAN circuit 136 for performing CAN communication with the main ECU 90.
- the actuator function unit 120 is operated by receiving power from the 5V power supply circuit 114 of the calculation function unit 110 and detects a rotation angle of the manual shaft 120 of the manual valve 58, and a rotor on which a permanent magnet is attached.
- the electric motor 124 as a brushless motor that drives the manual shaft 220 in accordance with the rotational drive of 124 a, the drive circuit 126 for driving the electric motor 124, and the power supply from the 5V power supply circuit 134 of the monitoring function unit 130
- a motor angle sensor 128 for controlling the brushless motor that operates and detects the rotation angle of the electric motor 124.
- the CPU 112 of the calculation function unit 110 receives the shaft position POS from the shaft position sensor 122, the motor rotation angle ⁇ m from the motor angle sensor 128, and the like, and the CPU 112 outputs a drive signal to the drive circuit 126 and the like. Yes.
- the shaft position POS and the motor rotation angle ⁇ m from the motor angle sensor 128 are also input to the monitoring CPU 132 of the monitoring function unit 130.
- the motor angle sensor 128 is constituted by three Hall ICs arranged at three positions for each phase of the UVW of the stator in order to detect the magnetic position of the rotor 124a of the electric motor 124.
- the motor angle sensor 128 detects the motor rotation angle ⁇ m by detecting rising edges and falling edges of the output signals HU, HV, HW.
- the shaft position sensor 122 receives power from the 5V power circuit 114 of the calculation function unit 110 and the motor angle sensor 128 operates by receiving power from the 5V power circuit 134 of the monitoring function unit 130. Since the sensor 128 has the above-described configuration, even if a slight error occurs in the power supply voltage between the 5V power supply circuit 114 and the 5V power supply circuit 134, the detection accuracy is not affected.
- the main ECU 90 is configured as a microprocessor centered on a CPU. In addition to the CPU, a ROM that stores a processing program, a RAM that temporarily stores data, an input / output port, And a communication port.
- the main ECU 90 includes a shift position SP from the shift position sensor 92 that detects the operation position of the shift lever 91, an accelerator opening Acc from the accelerator pedal position sensor 94 that detects an amount of depression of the accelerator pedal 93, and a depression of the brake pedal 95.
- the brake switch signal BSW from the brake switch 96, the vehicle speed V from the vehicle speed sensor 98, and the like are input via the input port, and a lighting signal to the warning lamp 99 is output from the main ECU 90 via the output port.
- the main ECU 90 is connected to the engine ECU 16, the ATECU 29, and the SBWECU 100 via a communication port, and exchanges various control signals and data with the engine ECU 16, the ATECU 29, and the SBWECU 100.
- the main ECU 90 When the shift lever 91 is shifted to the parking (P) position, the main ECU 90 normally transmits a shift command signal for the P position to the SBWECU 100 and the ATECU 29.
- the SBWECU 100 that has received the shift command signal (shift position SP) controls the drive of the electric motor 124 by the drive circuit 126 so that the valve position VP based on the shaft position POS from the shaft position sensor 122 matches the valve position for the P position.
- the ATECU 29 When receiving the shift command signal, the ATECU 29 turns on the linear solenoid SLC3 and the on / off solenoid S1, and turns off the linear solenoids SLC1, SLC2, and SLB1 and the on / off solenoid S2.Further, when the shift lever 91 is shifted to the reverse (R) position, the main ECU 90 transmits a shift command signal for the R position to the SBWECU 100 to the SBWECU 100 and the ATECU 29, thereby causing the shift command via the shift command circuit 108.
- the SBWECU 100 that has received the signal controls the drive of the electric motor 124 by the drive circuit 126 so that the valve position VP based on the shaft position POS from the shaft position sensor 122 matches the valve position for the R position, and receives the shift command signal. Turns on the on / off solenoid S1 and turns off the linear solenoids SLC1 to SLC3, SLB1 and the on / off solenoid S2. Further, when the shift lever 91 is shifted to the N position, the main ECU 90 transmits a shift command signal for the neutral (N) position to the SBWECU 100 to the SBWECU 100 and the ATECU 29, whereby the shift command is sent via the shift command circuit 108.
- the SBWECU 100 that has received the signal controls the drive of the electric motor 124 by the drive circuit 126 so that the valve position VP based on the shaft position POS from the shaft position sensor 122 matches the valve position for the N position, and receives the shift command signal. Turns on / off solenoids S1, S2 and linear solenoid SLC3 and turns off linear solenoids SLC1, SLC2, SLB1.
- the shift lever 91 When the shift lever 91 is shifted to the drive (D) position, the main ECU 90 transmits a shift command signal for the D position to the SBWECU 100 and the ATECU 29, and the accelerator opening Acc from the accelerator pedal position sensor 94 and the vehicle speed.
- the SBWECU 100 By transmitting the vehicle speed V from the sensor 98 to the ATECU 29, the SBWECU 100 that has received the shift command signal via the shift command circuit 108 has the valve position VP based on the shaft position POS from the shaft position sensor 122 as a bubble for the D position.
- the drive circuit 126 controls the drive of the electric motor 124 so as to match the position, and the ATECU 29 that receives the accelerator opening Acc and the vehicle speed V generates a shift map based on the accelerator opening Acc and the vehicle speed V.
- the linear solenoid 56, SLC1 to SLC3 so that the required clutch or brake is turned on according to the set gear position among the clutches C1 to C3 and the brakes B1 and B2. , SLB1 and on / off solenoids S1 and S2 are controlled.
- FIG. 7 is a flowchart illustrating an example of a calculation function unit side processing routine executed by the calculation function unit 110 of the SBWECU 100. This routine is repeatedly executed every predetermined time (for example, every several tens of msec).
- the CPU 112 of the calculation function unit 110 first inputs data necessary for control of the shift position SP as the shift command signal, the shaft position POS from the shaft position sensor 122, and the like. Processing is executed (step S100).
- the shift position SP is received and input as a shift command signal transmitted from the main ECU 90 by communication.
- a monitoring process for determining whether an abnormality has occurred in the monitoring function unit 130 is executed (step S110).
- the process proceeds to the next process, and when it is not normal, that is, when there is an abnormality, An abnormality notification is transmitted to the main ECU 90 (step S130).
- the shaft position POS from the shaft position sensor 122 and the motor rotation angle ⁇ m from the motor angle sensor 128 are input (step S140), and the valve position VP of the manual valve 58 is set based on the input shaft position POS (step S140).
- step S150 the relationship between the shaft position POS and the valve position VP is obtained in advance and stored in the ROM as a map, and when the shaft position POS is given, the corresponding valve position VP is determined from the map. It was set by deriving. An example of this map is shown in FIG. In FIG. 8, the value 0, the value VP1, the value VP2, and the value VP3 of the valve position VP correspond to the value MP1, the value MP2, and the value MP3 of the shaft position POS, respectively. This corresponds to Nm2 and value Nm3.
- a PWM (pulse width modulation) signal for driving the electric motor 124 is generated based on the set valve position VP, the input shift position SP, and the motor rotation angle ⁇ m (step S160).
- the generated PWM signal is output to the drive circuit 126 to control the drive of the electric motor 124 (step S170), and the process returns to step S140 to repeat the processes of steps S140 to S170.
- VP reaches a position corresponding to the shift position SP (step S180)
- the current valve position VP (actual shift position) is transmitted to the main ECU 90 (step S190), and this routine is terminated.
- FIG. 9 is a flowchart illustrating an example of a monitoring function unit side processing routine executed by the monitoring function unit 130 of the SBWECU 100. This routine is repeatedly executed every predetermined time (for example, every several tens of msec).
- the monitoring CPU 132 of the monitoring function unit 130 first receives the shift position SP from the main ECU 90 (step S200), and receives the shift position SP and the valve position VP from the calculation function unit 110.
- the power supply voltage V of the 5V power supply circuit 114 is input (step S210), the shaft position POS from the shaft position sensor 122 and the motor rotation angle ⁇ m from the motor angle sensor 128 are input (step S220), and the input shaft position POS.
- the valve position VP is set using the map of FIG. 8 described above (step S230).
- step S240 it is determined whether or not the shift position SP received directly from the main ECU 90 matches the shift position SP input via the calculation function unit 110 (step S240), and is set by the calculation function unit 110. It is determined whether or not the input valve position VP matches the valve position VP set in step S230 (step S250). If both of these determinations are positive, the arithmetic function unit 110 determines that the calculation is normal (step S260) and ends the process. If a negative determination is made in any of the determinations in steps S240 and S250, then, whether or not the power supply voltage V from the 5V power supply circuit 114 of the arithmetic function unit 110 is less than a threshold value Vref (for example, 4.5V).
- Vref for example, 4.5V
- step S280 If the power supply voltage V is not less than the threshold value Vref, that is, not less than the threshold value Vref, it is determined that an abnormality has occurred in the CPU 112 or the CAN circuit 116 of the arithmetic function unit 110 (step S280). An abnormality is notified to the main ECU 90 (step S320), the valve position VP set in step S230 is transmitted (step S330), and this process is terminated.
- step S290 When it is determined in step S270 that the power supply voltage V is less than the threshold value Vref, it is determined that the 5V power supply circuit 114 of the arithmetic function unit 110 is abnormal (step S290), and the following equation (1) is used based on the input motor rotation angle ⁇ m.
- the number of motor rotations Nm is calculated (step S300).
- the motor rotation number Nm is calculated as a cumulative value of the rotation number of the electric motor 124, and “previous Nm” in the equation (1) indicates the motor rotation number Nm previously calculated in this routine.
- Previous ⁇ m indicates the motor rotation angle ⁇ m used in the previous routine.
- Nm previous Nm + ( ⁇ m-previous ⁇ m) / 360 ° (1)
- valve position VP is estimated using the map of FIG. 8 based on the calculated number of motor rotations Nm (step S310), the abnormality is notified to the main ECU 90 by communication (step S320), and the estimated valve is determined.
- the position VP is transmitted (step S330), and this process ends.
- step S110 of the processing function unit side processing routine of FIG. 7 the calculation function unit 110 monitors the monitoring function unit 130 to perform mutual monitoring. This monitoring can be performed by the same processing as the processing of the monitoring function unit side processing routine of FIG.
- the main ECU 90 When the main ECU 90 receives a notification of abnormality of the monitoring function unit 130 from the calculation function unit 110, the main ECU 90 turns on the warning lamp 99 in order to notify the driver to that effect, but the calculation function unit 110 is normal.
- the normal control described above is continuously executed.
- the valve position VP is also received together with this, so that the warning lamp 99 is turned on and instead of normal control, for example, a shift lever
- the current valve position is determined when the vehicle speed V is equal to or higher than the threshold value Vref. Holding the shift position (D position) corresponding to VP and continuing traveling, when the vehicle speed V falls below the threshold value Vref, the shift lever 91 is in the D position and the current valve position VP of the manual valve 58 corresponds to the D position.
- the All keys B1, B2 is set to the N position as off, to cut off the power from the engine 12. Therefore, even when an abnormality occurs in the SBWECU 100 during traveling, for example, retreat traveling such as stopping the vehicle on the shoulder can be performed.
- the SBWECU 100 receives the shift command signal (shift position SP) through communication with the main ECU 90 and controls the actuator function unit 120 that drives the manual valve 58 and also controls the shaft.
- the calculation function unit 110 that sets the valve position VP of the manual valve 58 from the shaft position POS from the position sensor 122 and transmits it to the main ECU 90, and the shaft position POS from the shaft position sensor 122 that can communicate with the main ECU 90 are input.
- a monitoring function unit 130 for monitoring the abnormality of the arithmetic function unit 110 is incorporated, and when the monitoring function unit 130 determines that an abnormality has occurred in the arithmetic function unit 110, the shaft position from the shaft position sensor 122 is detected.
- the POS sets the valve position VP of the manual valve 58 and transmits it to the main ECU 90, so that the main ECU 90 knows the current valve position VP of the manual valve 58 regardless of whether the calculation function unit 110 is abnormal. Can do. As a result, the main ECU 90 can appropriately cope with an abnormality in the SBWECU 100.
- the motor angle sensor 128 is configured to operate by receiving power from the 5V power supply circuit 134 of the monitoring function unit 130 in order to detect the rotation angle of the rotor 124a for controlling the electric motor 124, Even if an abnormality occurs in the 5V power supply circuit 114 and the shaft position sensor 122 receiving power from the 5V power supply circuit does not function, the valve position VP is estimated based on the motor rotation angle ⁇ m from the motor angle sensor 128. It can be transmitted to the main ECU 90.
- the monitoring function unit 130 is configured to operate by receiving power from a 5V power circuit 134 that is different from the 5V power circuit 114 of the calculation function unit 110, so that there is an abnormality in the 5V power circuit 114 of the calculation function unit 110. Even if it occurs, it can be operated.
- the arithmetic function unit 110 and the monitoring function unit 130 perform mutual monitoring.
- the monitoring function unit 130 monitors the abnormality of the arithmetic function unit 110, but the arithmetic function unit 110 monitors.
- the abnormality of the functional unit 130 may not be monitored.
- the motor angle sensor 128 is configured to operate by receiving power supply from the 5V power supply circuit 134 of the monitoring function unit 130.
- the motor angle sensor 128 may be configured to operate by receiving power from the 5V power supply circuit 114 of the calculation function unit 110.
- the monitoring function unit 130 cannot grasp the valve position VP.
- the monitoring function unit 130 is configured to operate by receiving power supply from the 5V power circuit 134 different from the 5V power circuit 114 of the calculation function unit 110.
- the 5V power supply circuit 114 of the arithmetic function unit 110 may be shared. However, in this case, when an abnormality occurs in the 5V power supply circuit 114, the function of the monitoring function unit 130 is stopped together with the calculation function unit 110.
- the monitoring function unit 130 is incorporated in the SBWECU 100.
- the SBWECU 100D incorporates the calculation function unit 110 and the actuator function unit 120, and the CPU 29a.
- An arithmetic function unit including the 5V power supply circuit 29b and the CAN circuit 29c may be incorporated in another ECU such as the ATECU 29.
- the drive signal (PWM signal) from the CPU 112 of the arithmetic function unit 110 is directly output to the drive circuit 126 of the actuator function unit 120, but this is shown in the SBWECU 100E of a modification example of FIG.
- the drive signal from the CPU 112 of the arithmetic function unit 110 may be output to the drive circuit 126 via the AND circuit 118.
- the AND circuit 118 is incorporated in the arithmetic function unit 110 and receives a signal output from the CPU 112 of the arithmetic function unit 110 and a signal output from the monitoring CPU 132 of the monitoring function unit 130 via the inverting circuit 138.
- the driving signal from the CPU 112 of the arithmetic function unit 110 is the driving circuit when the monitoring CPU 132 outputs the off signal (permission signal).
- the monitoring CPU 132 outputs an ON signal (prohibition signal)
- the drive signal from the CPU 112 of the arithmetic function unit 110 is not transmitted to the drive circuit 126. That is, the driving control of the motor 124 by the arithmetic function unit 110 can be permitted or prohibited by a signal from the monitoring function unit 130.
- the CPU 112 of the arithmetic function unit 110 is input with the permission signal output from the monitoring CPU 132 of the monitoring function unit 130 via the inverting circuit 138 so that the monitoring function unit 130 side can recognize the presence or absence of permission. It has become.
- the AND circuit 118 is incorporated into the arithmetic function unit 110, but may be incorporated into the actuator function unit 120.
- FIG. 14 is a flowchart showing a processing routine on the calculation function unit side according to a modification.
- the same processes as those of the arithmetic function unit side processing routines of the embodiments are denoted by the same step numbers, and the description thereof is omitted because it is redundant.
- step S120 if it is determined in step S120 that the monitoring function unit 130 (monitoring CPU 132, 5V power supply circuit 134, CAN circuit 136) is not normal, that is, an abnormality has occurred, the monitoring function unit 130 Is notified to the main ECU 90 (step S430), a reset signal for resetting the monitoring function unit 130 is output (step S440), and the processes after step S140 are executed.
- the monitoring CPU 132 of the monitoring function unit 130 is reset and an off signal is output, and an ON signal is input to the AND circuit 118 by the inverting circuit 138.
- the arithmetic function unit 110 can control the motor 124 by disconnecting the monitoring by the monitoring function unit 130 and outputting a drive signal to the drive circuit 126.
- a permission signal from the monitoring function unit 130 is input (step S400), that is, whether or not the input permission signal is an off signal. It is determined whether or not the driving of the motor 124 is prohibited by the monitoring function unit 130 (step S410).
- the processing from step S140 is executed as it is, and when the input permission signal is an off signal, that is, the monitoring function unit 130.
- step S400 When the driving of the motor 124 is prohibited, the process returns to step S400 until a predetermined timeout time (for example, 1 second) elapses, and waits for the permission signal to become an on signal (step S420).
- a predetermined timeout time for example, 1 second
- a notification to that effect is sent to the main ECU 90 (step S430), and a reset signal for resetting the monitoring function unit 130 is output (step S440).
- the processes in steps S410 to S440 are for resetting the monitoring function unit 130 so that the motor 124 can be driven and controlled when there is some abnormality that cannot be grasped by the calculation function unit 110 in the monitoring function unit 130. It is.
- FIG. 15 is a flowchart showing a monitoring function unit side processing routine of a modified example.
- the monitoring function unit side processing routine of this modified example is obtained by adding the gate cutoff processing of step S500 after step S260 and step S330 of the monitoring function unit side processing routine of the embodiment as shown in the figure.
- the monitoring function unit 130 is configured to output an off signal when the monitoring function unit 130 is reset and enters an initial state.
- FIG. 16 is a flowchart illustrating an example of a gate shut-off process routine.
- the gate shut-off process first, when an abnormality has occurred in either the 5V power supply circuit 114 of the arithmetic function unit 110 or the CPU 112 or the CAN circuit 116 of the arithmetic function unit 110 (steps S510 and S520), the arithmetic function unit 110 The transmission of the drive signal from the CPU 112 to the drive circuit 126 is cut off (gate cut off) (step S590).
- the gate cut-off is performed by outputting an ON signal because the monitoring CPU 132 is connected to the AND circuit 118 via the inverting circuit 138.
- the manual shaft 260 should be rotated by the shift position SP before and after the shift lever 91 is switched.
- the direction is set (step S530), and the current rotation direction of the manual shaft 260 is determined based on the change amount of the shaft position POS input from the shaft position sensor 122 (step S540), and the rotation direction determined as the set rotation direction. It is determined whether or not are in the reverse direction (step S550). If it is determined that the set rotation direction is opposite to the determined rotation direction, the above-described gate blocking is executed (step S590).
- a post-switching position POS * which is a position 260 is set (step S560), and the rotation of the manual shaft 260 passes the post-switching position POS * by comparing the current shaft position POS and the post-switching position POS * ( It is determined whether or not (step S570).
- the post-switch position POS * is set by previously obtaining the relationship between the shift position SP and the post-switch position POS * and storing it in the ROM as a map. This is done by deriving POS *.
- the post-switching position POS * is determined as a region having a predetermined width centered on the rotation angle that the manual shaft 260 should take with respect to the shift position SP. If it is determined that the rotation of the manual shaft 260 has exceeded the post-switching position POS *, the gate is shut off as described above (step S590), the routine is terminated, and it is determined that the post-switching position POS * has not been exceeded. Then, this routine is terminated without doing anything. As described above, since the gate cut-off is performed by outputting an ON signal from the monitoring CPU 132, gate permission is performed when the ON signal is not output, that is, when the OFF signal is output.
- the SBWECU 100 is formed by incorporating the transmission device of the embodiment and the drive circuit 126 into the actuator function unit 120, the drive circuit 126 may be incorporated into the calculation function unit 110 as shown in FIG. Good.
- the parking lock mechanism 280 includes a parking gear 282 attached to the gear mechanism 26 of the automatic transmission 20, a parking pole 284 that engages with the parking gear 282 and locks in a stopped state, a parking rod 286, and a parking rod 286.
- the parking rod 286 is provided at the tip of the parking cam 288.
- the parking cam 288 presses the parking pole 284 toward the parking gear 282 and releases the pressing.
- An L-shaped hook 286 a is formed at the base end of the parking rod 286, and the hook 286 a is hooked in a hole formed at a position eccentric to the rotation axis of the manual shaft 260 in the manual plate 262. Accordingly, the parking gear 282 can be locked by rotating the manual shaft 260 forward by the electric motor 266 (see FIG. 16A), and the parking gear 282 can be unlocked by rotating the manual shaft 260 in reverse (see FIG. 16A). (Refer FIG.16 (b)).
- the manual plate 262 is provided with a detent mechanism 270 including a detent spring 274 and a roller 276 pressed against a cam surface 272 formed at the end of the manual plate 262.
- a hybrid vehicle equipped with a second motor that has been mounted since it is possible to travel by freely shifting the power from the engine and outputting it to the drive shaft without providing a hydraulic circuit,
- the parking lock mechanism 280 is activated and operated to a position other than the P position (for example, the D (drive) position or the neutral (N) position).
- a shift-by-wire system that releases the operation of the parking lock mechanism 180 can be considered.
- the shaft position sensor 108 is attached to the manual shaft 260 in order to avoid such inconvenience. Therefore, the same processing as that of the embodiment can be applied to the modification.
- the automatic transmission 20 is constituted by a stepped transmission having a six-speed shift from the first forward speed to the sixth forward speed.
- the present invention is not limited to this. It is good also as what is comprised by the stepped transmission of this, and may be comprised by the stepped transmission of seven steps or more.
- the main ECU 90 and the ATECU 29 are configured by two electronic control units, but may be configured by three or more electronic control units, or may be configured by a single electronic control unit. It does n’t matter what you do.
- the transmission apparatus of the embodiment is applied to the automobile 10 equipped with the engine 12 as an internal combustion engine
- the transmission apparatus may be applied to a hybrid vehicle including an internal combustion engine and an electric motor. Moreover, it is good also as what applies to the electric vehicle carrying only the motor for driving
- the present invention is applied to a transmission device, but may be a shift-by-wire device.
- the shaft position sensor 122 corresponds to the “shaft position sensor”
- the drive circuit 126 corresponds to the “drive unit”
- the main ECU 90 corresponds to the “management electronic control unit”
- the calculation function unit 110 of the SBWECU 100 that executes the side processing routine corresponds to the “calculation function unit”
- the monitoring function unit 130 of the SBWECU 100 that executes the monitoring function unit side processing routine of FIG. 9 corresponds to the “monitoring function unit”.
- the electric motor 124 corresponds to a “motor”
- the motor angle sensor 128 corresponds to a “rotational position sensor”.
- the “signal transmission cutoff circuit” corresponds to the AND circuit 118.
- the “electric motor” is not limited to the brassless motor, and the rotational position of the rotating shaft is detected and detected, such as a synchronous motor such as a DC brushless motor or an SR motor (switched reluctance motor). Any type of electric motor may be used as long as it is controlled using the position.
- the “rotational position sensor” is not limited to the one using the Hall IC, but may be another type of sensor such as an optical rotary encoder or a resolver. It should be noted that the correspondence between the main elements of the embodiment and the main elements of the invention described in the disclosure column of the embodiment is the best mode for carrying out the invention described in the disclosure column of the embodiment.
- the elements of the invention described in the column of the disclosure of the invention are not limited. That is, the interpretation of the invention described in the column of the disclosure of the invention should be made based on the description of that column, and the examples are only specific examples of the invention described in the column of the disclosure of the invention. It is.
- the present invention is applicable to the automobile industry.
Abstract
Description
運転者により要求される要求シフトポジションを検出するシフトポジションセンサからの信号を入力する管理用電子制御ユニットに通信可能に接続され、該管理用電子制御ユニットからのシフト指令に基づいてマニュアルシャフトを駆動制御することにより作動対象を作動させるシフトバイワイヤ装置であって、
前記マニュアルシャフトの回転角度を検出するシャフトポジションセンサと、
前記マニュアルシャフトのアクチュエータを駆動する駆動部と、
前記シャフトポジションセンサからのシャフトの回転角度を入力すると共に前記管理用電子制御ユニットからシフト指令を受信し、前記入力したシャフトの回転角度を前記管理用電子制御ユニットに送信すると共に該入力したシャフトの回転角度と前記受信したシフト指令とに基づいて前記駆動部を制御する演算用CPUを有する演算機能部と、
前記シャフトポジションセンサからのシャフトの回転角度を入力し、前記演算機能部の異常の有無を監視すると共に該演算機能部に異常が生じていると判定したときに前記入力したシャフトの回転角度を前記管理用電子制御ユニットに送信する監視用CPUを有する監視機能部と
を備えることを要旨とする。
マニュアルシャフトに連動するマニュアルバルブを介して供給される流体圧を用いて作動するクラッチにより動力の伝達が可能な自動変速機と、
前記マニュアルシャフトを駆動する上述した各態様のいずれかの本発明のシフトバイワイヤ装置、即ち、基本的には、運転者により要求される要求シフトポジションを検出するシフトポジションセンサからの信号を入力する管理用電子制御ユニットに通信可能に接続され該管理用電子制御ユニットからのシフト指令に基づいてマニュアルシャフトを駆動制御するシフトバイワイヤ装置であって、前記マニュアルシャフトの回転角度を検出するシャフトポジションセンサと、前記マニュアルシャフトのアクチュエータを駆動する駆動部と、前記シャフトポジションセンサからのシャフトの回転角度を入力すると共に前記管理用電子制御ユニットからシフト指令を受信し前記入力したシャフトの回転角度を前記管理用電子制御ユニットに送信すると共に該入力したシャフトの回転角度と前記受信したシフト指令とに基づいて前記駆動部を制御する演算用CPUを有する演算機能部と、前記シャフトポジションセンサからのシャフトの回転角度を入力し前記演算機能部の異常の有無を監視すると共に該演算機能部に異常が生じていると判定したときに前記入力したシャフトの回転角度を前記管理用電子制御ユニットに送信する監視用CPUを有する監視機能部とを備えるシフトバイワイヤ装置と
を搭載することを要旨とする。
Claims (14)
- 運転者により要求される要求シフトポジションを検出するシフトポジションセンサからの信号を入力する管理用電子制御ユニットに通信可能に接続され、該管理用電子制御ユニットからのシフト指令に基づいてマニュアルシャフトを駆動制御することにより作動対象を作動させるシフトバイワイヤ装置であって、
前記マニュアルシャフトの回転角度を検出するシャフトポジションセンサと、
前記マニュアルシャフトのアクチュエータを駆動する駆動部と、
前記シャフトポジションセンサからのシャフトの回転角度を入力すると共に前記管理用電子制御ユニットからシフト指令を受信し、前記入力したシャフトの回転角度を前記管理用電子制御ユニットに送信すると共に該入力したシャフトの回転角度と前記受信したシフト指令とに基づいて前記駆動部を制御する演算用CPUを有する演算機能部と、
前記シャフトポジションセンサからのシャフトの回転角度を入力し、前記演算機能部の異常の有無を監視すると共に該演算機能部に異常が生じていると判定したときに前記入力したシャフトの回転角度を前記管理用電子制御ユニットに送信する監視用CPUを有する監視機能部と
を備えるシフトバイワイヤ装置。 - 前記監視機能部は、前記演算機能部と前記管理用電子制御ユニットとの通信異常の有無を監視する部である請求項1記載のシフトバイワイヤ装置。
- 請求項1または2記載のシフトバイワイヤ装置であって、
前記演算機能部と前記監視機能部は、それぞれ異なる電源を用いて作動する部であり、
前記監視機能部は、前記演算機能部に給電する電源の異常の有無を監視する部である
シフトバイワイヤ装置。 - 請求項3記載のシフトバイワイヤ装置であって、
前記マニュアルシャフトのアクチュエータは、回転子を有する電動機であり、
前記電動機を制御するために前記回転子の回転位置を検出する回転ポジションセンサを備え、
前記シャフトポジションセンサは、前記演算用CPU用の電源からの給電を受けて作動するセンサであり、
前記回転ポジションセンサは、前記監視用CPU用の電源からの給電を受けて作動するセンサであり、
前記演算機能部は、前記回転ポジションセンサからの前記回転子の回転位置を入力すると共に該入力した回転位置に基づいて前記駆動部を制御する部であり、
前記監視機能部は、前記演算機能部に給電する電源の異常と判定したときには、前記回転ポジションセンサからの前記回転子の回転位置を入力すると共に該入力した回転位置に基づいて前記シャフトの回転角度を推定して前記管理用電子制御ユニットに送信する部である
シフトバイワイヤ装置。 - 前記監視機能部は、監視により異常と判定したときに該判定の結果を前記管理用電子制御ユニットに送信する部である請求項1ないし4いずれか1項に記載のシフトバイワイヤ装置。
- 前記監視機能部は、前記演算機能部から前記駆動部への駆動信号の伝達の許可と禁止とが可能な部である請求項1ないし5いずれか1項に記載のシフトバイワイヤ装置。
- 前記監視機能部は、前記演算機能部に異常が生じていないと判定したときに前記駆動部への駆動信号の伝達を許可し、前記演算機能部に異常が生じていると判定したときに前記駆動部への駆動信号の伝達を禁止する部である請求項6記載のシフトバイワイヤ装置。
- 前記監視機能部は、前記管理用電子制御ユニットからシフト指令を入力し、前記アクチュエータにより前記マニュアルシャフトが駆動されたときに該マニュアルシャフトの回転方向が前記入力したシフト指令に応じた回転方向とは異なるときに前記駆動部への駆動信号の伝達を禁止することを特徴とする請求項7記載のシフトバイワイヤ装置。
- 前記監視機能部は、前記管理用電子制御ユニットからシフト指令を入力し、前記アクチュエータにより前記マニュアルシャフトが駆動されたときに該マニュアルシャフトの回転角度が前記入力したシフト指令に応じた回転角度を超えたときに前記駆動部への駆動信号の伝達を禁止することを特徴とする請求項7または8記載のシフトバイワイヤ装置。
- 請求項6ないし9いずれか1項に記載のシフトバイワイヤ装置であって、
前記監視機能部から許可信号が入力されているときに駆動信号を前記駆動部に伝達し、前記許可信号が入力されていないときに駆動信号の前記駆動部への伝達を遮断する信号伝達遮断回路を備え、
前記監視機能部は、オフ信号を反転回路を介して前記許可信号として出力する部であり、
前記演算機能部は、前記監視機能部に所定の異常が生じているか否かを判定し、前記監視機能部に前記所定の異常が生じていると判定したときに該監視機能部をリセットする部である
シフトバイワイヤ装置。 - 前記演算機能部は、前記監視機能部に前記所定の異常が生じていると判定されなかったときに所定時間以上に亘って前記監視機能部から許可信号が出力されていないときに該監視機能部をリセットする部である請求項10記載のシフトバイワイヤ装置。
- 前記駆動部と前記演算機能部と前記監視機能部は、単一の電子制御ユニットとして構成されてなることを特徴とする請求項1ないし11いずれか1項に記載のシフトバイワイヤ装置。
- 前記作動対象は、前記マニュアルシャフトの駆動に伴って作動するパーキングロック機構である請求項1ないし12いずれか1項に記載のシフトバイワイヤ装置。
- マニュアルシャフトに連動するマニュアルバルブを介して供給される流体圧を用いて作動するクラッチにより動力の伝達が可能な自動変速機と、
前記作動対象として前記マニュアルシャフトを駆動する請求項1ないし13いずれか1項に記載のシフトバイワイヤ装置と、
を搭載する変速機装置。
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CN2009801277998A CN102099603B (zh) | 2008-12-19 | 2009-10-16 | 线控换挡装置和安装该线控换挡装置的变速器装置 |
JP2010542911A JP5158208B2 (ja) | 2008-12-19 | 2009-10-16 | シフトバイワイヤ装置およびこれを搭載する変速機装置 |
EP09833279.4A EP2348233B1 (en) | 2008-12-19 | 2009-10-16 | Shift-by-wire device and transmission device using same |
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JP6492778B2 (ja) * | 2015-03-05 | 2019-04-03 | 株式会社デンソー | レンジ切換制御装置 |
CN108025687B (zh) * | 2015-09-29 | 2021-12-21 | 日立安斯泰莫株式会社 | 监视系统及车辆用控制装置 |
US11136044B2 (en) * | 2016-12-13 | 2021-10-05 | Hitachi Automotive Systems, Ltd. | Vehicle control device |
KR102592205B1 (ko) * | 2016-12-29 | 2023-10-20 | 현대자동차주식회사 | 차량의 공용 부품 진단 장치 및 방법 |
CN107575569B (zh) * | 2017-10-31 | 2019-10-15 | 科世达(上海)管理有限公司 | 一种换挡装置及挡位编码的方法 |
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EP2348233A4 (en) | 2012-04-04 |
CN102099603B (zh) | 2013-11-06 |
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JP5158208B2 (ja) | 2013-03-06 |
EP2348233B1 (en) | 2016-05-11 |
CN102099603A (zh) | 2011-06-15 |
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