Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T7/00—Brake-action initiating means
  • B60T7/02—Brake-action initiating means for personal initiation
  • B60T7/04—Brake-action initiating means for personal initiation foot actuated
  • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
  • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
  • B60T13/66—Electrical control in fluid-pressure brake systems
  • B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
  • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
  • B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
  • B60T2220/04—Pedal travel sensor, stroke sensor; Sensing brake request

Definitions

• the present invention relates to a control system.
• Patent Document 1 discloses an electric booster that assists the driver's brake operation force. The operation of the electric booster is controlled using output information from a sensor that detects the amount of operation of a brake operating part used for braking.
• the sensor that detects the amount of operation of the operation part is basically used so that the control device can obtain the amount of operation of the operation part as information. It is considered desirable to improve the convenience of the driver by using such a sensor for more purposes.
• the present invention aims to provide a control system that can improve convenience for the driver.
• the control system is a control system for controlling the operation of a vehicle, and includes a sensor that detects the amount of operation of an operating part operated by a driver of the vehicle and outputs output information according to the amount of operation, and a control device capable of executing a sleep mode in which power consumption of the vehicle is reduced, the control device being capable of switching between a first mode that is executed while the sleep mode is released and that acquires the amount of operation based on the output information, and a second mode that is executed while the sleep mode is running and that releases the sleep mode based on the output information, and the correspondence between the amount of operation and the output information in the sensor differs between the first mode and the second mode.
• FIG. 1 Schematic diagram showing the general configuration of a vehicle according to an embodiment of the present invention.
• FIG. 2 A flowchart showing an example of the processing flow performed by a control device according to an embodiment of the present invention.
• FIG. 3 is a diagram showing the correspondence between the operation amount and output information in a sensor in a first mode according to an embodiment of the present invention.
• FIG. 4 is a diagram showing the correspondence between the operation amount and output information in the sensor in the second mode according to the embodiment of the present invention.
• Fig. 1 is a schematic diagram showing a general configuration of a vehicle 1.
• the vehicle 1 includes a brake operation unit 2, an electric booster 3, and a hydraulic control unit 4.
• the brake operation unit 2 corresponds to an example of an operation unit 20 operated by a driver of the vehicle 1.
• the vehicle according to the present invention is not limited to the example of Fig. 1, and may be, for example, a vehicle that does not include the electric booster 3.
• the brake operating unit 2 is used to operate the brakes to brake the vehicle 1.
• the brake operating unit 2 is operated by the driver's foot.
• the brake operation is performed by the driver depressing the brake operating unit 2 with his/her foot.
• the electric booster 3 assists the brake operation force applied by the driver (i.e., the force applied to the brake operation unit 2).
• the electric booster 3 has an electric motor, and during a brake operation, the operation of the electric motor is controlled to assist the brake operation force applied by the driver.
• the hydraulic control unit 4 has a function of adjusting the brake hydraulic pressure of the wheel cylinder in the brake caliper attached to each wheel.
• a pump and a solenoid valve are provided in the oil passage of the hydraulic control unit 4, and the brake hydraulic pressure that applies braking force to each wheel is adjusted by controlling the operation of the pump and the solenoid valve.
• the brake hydraulic pressure generated by the master cylinder in response to the driver's brake operation is supplied to the wheel cylinder via the hydraulic control unit 4.
• a vehicle 1 includes a control system 10 that controls the operation of the vehicle 1 by performing processing using an operation amount of an operation unit 20 (brake operation unit 2 in the example of Fig. 1) operated by a driver.
• the control system 10 includes a sensor 11 and a control device 12.
• the sensor 11 detects the amount of operation of the brake operating unit 2 operated by the driver of the vehicle 1 (i.e., the amount of brake operation), and outputs output information according to the amount of operation.
• the sensor 11 is not built into the electric booster 3, but is disposed outside the electric booster 3.
• the position of the sensor 11 in the vehicle 1 is not particularly limited, and may be, for example, inside the vehicle cabin or inside the engine room. However, the sensor 11 may be built into the electric booster 3.
• the control device 12 includes a CPU (Central Processing Unit) which is an arithmetic processing device, a ROM (Read Only Memory) which is a memory element that stores programs and arithmetic parameters used by the CPU, and a RAM (Random Access Memory) which is a memory element that temporarily stores parameters that change as the CPU executes.
• CPU Central Processing Unit
• ROM Read Only Memory
• RAM Random Access Memory
• the functions of the control device 12 may be divided into multiple devices, and multiple functions may be implemented as one device. In the case where the functions of the control device 12 are divided among a plurality of devices, the plurality of devices may be capable of communicating with each other.
• the control device 12 mainly controls the operation of the electric booster 3. Specifically, the control device 12 controls the operation of the electric motor of the electric booster 3, thereby controlling the force that the electric booster 3 uses to assist the brake operation force. Such control is performed using output information from the sensor 11.
• the control device 12 can execute a process for controlling the operation of the electric booster 3 (corresponding to a first mode described later) as well as a process for canceling the sleep mode (corresponding to a second mode described later).
• the sleep mode the power consumption of the vehicle 1 is reduced. For example, when the vehicle 1 is stopped and the driver has not operated the vehicle for a predetermined period of time, the vehicle 1 enters the sleep mode. Both of the above two processes are performed using the sensor 11. The details of the above two processes will be described later.
• control device 12 can execute a process for controlling the operation of the electric booster 3 and a process for canceling the sleep mode.
• the control device 12 executes a first mode as a process mode for controlling the operation of the electric booster 3, and executes a second mode as a process mode for canceling the sleep mode.
• the control device 12 can switch between the first mode and the second mode.
• Fig. 2 is a flowchart showing an example of a process flow performed by the control device 12. Step S101 in Fig. 2 corresponds to the start of the control flow shown in Fig. 2.
• step S102 the control device 12 determines whether or not the sleep mode is being released.
• step S102/YES If it is determined that the sleep mode is being cancelled (step S102/YES), proceed to step S103.
• step S103 the control device 12 switches the processing mode to the first mode and returns to step S102.
• step S102/NO if it is determined that the sleep mode is being executed (step S102/NO), proceed to step S104.
• step S104 the control device 12 switches the processing mode to the second mode and returns to step S102.
• the first mode is executed while the sleep mode is released, and the second mode is executed while the sleep mode is executed.
• the correspondence between the operation amount and the output information in the sensor 11 is different between the first mode and the second mode. This allows the control device 12 to appropriately execute each of the first mode and the second mode.
• Fig. 3 is a diagram showing the correspondence relationship between the operation amount X and output information Y of the sensor 11 in the first mode.
• the control device 12 acquires the operation amount X of the brake operation unit 2 based on the output information Y of the sensor 11. Then, the control device 12 controls the operation of the electric booster 3 based on the acquired operation amount X of the brake operation unit 2.
• a biasing force according to the operation amount x is applied to the brake operation unit 2 as a reaction force. Therefore, the control device 12 controls the electric booster 3 so that the force assisting the brake operation force increases as the operation amount X increases.
• the output information Y in the first mode is information indicating a value correlated with the operation amount X.
• the output information Y in the first mode, as the operation amount X increases, the output information Y also increases.
• the output information Y indicates a value proportional to the operation amount X.
• the control device 12 obtains the operation amount X based on such output information Y, so that the force that the electric booster 3 uses to assist the brake operation force can be adjusted according to the operation amount X.
• Fig. 4 is a diagram showing the correspondence relationship between the operation amount X and output information Y of the sensor 11 in the second mode.
• the control device 12 releases the sleep mode based on the output information Y of the sensor 11. Specifically, the control device 12 determines whether the brake operation unit 2 is depressed by the driver based on the output information Y of the sensor 11, and releases the sleep mode when it is determined that the brake operation unit 2 is depressed by the driver.
• the output information Y in the second mode is information indicating whether the operation amount X is greater than the reference operation amount X0.
• the output information Y is 0.
• the reference operation amount X0 is set to a small value that can determine whether the brake operation unit 2 is depressed by the driver even a little.
• the output information Y is information indicating that the operation amount X is greater than the reference operation amount X0 (when the output information Y is 1 in the example of FIG.
• the control device 12 cancels the sleep mode.
• the driver can easily cancel the sleep mode by depressing the brake operation unit 2 while the sleep mode is being executed.
• vehicle 1 enters sleep mode, for example, when vehicle 1 is stopped and no operation by the driver continues for a predetermined period of time.
• the correspondence between the operation amount X and the output information Y in the sensor 11 is switched between the first mode and the second mode.
• the voltage applied to the sensor 11 is switched between the first mode and the second mode by the control device 12. This allows the sensor 11 to determine whether the processing mode of the control device 12 is the first mode or the second mode by referring to the voltage applied to the sensor 11.
• the sensor 11 sets a correspondence relationship between the operation amount X and the output information Y such that the output information Y is information indicating a value correlated with the operation amount X.
• the sensor 11 sets a correspondence relationship between the operation amount X and the output information Y such that the output information Y is information indicating whether the operation amount X is greater than the reference operation amount X0. This allows the control device 12 to appropriately execute each of the first mode and the second mode.
• the control system 10 includes a sensor 11 that detects an operation amount X of an operation unit 20 (in the above example, a brake operation unit 2) operated by a driver of a vehicle 1 and outputs output information Y corresponding to the operation amount X, and a control device 12 that can execute a sleep mode in which power consumption of the vehicle 1 is reduced.
• the control device 12 has a first mode that is executed while the sleep mode is released and acquires the operation amount X based on the output information Y, and a second mode that is executed while the sleep mode is being executed and acquires the output information Y.
• the first mode can be switched to a first mode in which the sleep mode is cancelled based on the output information Y, and the correspondence between the operation amount X of the sensor 11 and the output information Y differs between the first mode and the second mode.
• This allows the driver to easily cancel the sleep mode by operating the operation unit 2 O, which is used for other purposes while the sleep mode is cancelled, during the execution of the sleep mode. Therefore, the convenience for the driver can be improved.
• the output information Y in the first mode is information indicating a value correlated with the operation amount X
• the output information Y in the second mode is information indicating whether the operation amount X is greater than a reference operation amount X0. This allows the control device 12 to properly acquire the operation amount X in the first mode, and to properly determine whether the operation unit 20 is being operated by the driver in the second mode.
• the control device 12 cancels the sleep mode when the output information Y indicates that the operation amount X is greater than the reference operation amount X0 in the second mode. This allows the sleep mode to be appropriately cancelled in the second mode when the driver operates the operation unit 20 as a trigger.
• the operation unit 20 is a brake operation unit 2 used for braking. This allows the driver to easily cancel the sleep mode by stepping on the brake operation unit 2 while the sleep mode is being executed.
• the sensor 11 is not built into the electric booster 3 but is disposed outside the electric booster 3. This improves the convenience for the driver in a vehicle 1 in which the sensor 11 is not built into the electric booster 3.
• the operation unit 20 in which the operation amount X is detected by the sensor 11 is the brake operation unit 2.
• the operation unit 20 in which the operation amount X is detected by the sensor 11 may be an operation unit 20 other than the brake operation unit 2 (for example, an operation unit 20 operated by the driver's hand, etc.).
• the purpose of using the acquired operation amount X in the first mode may be a purpose other than the above purpose (that is, the purpose of controlling the operation of the electric booster 3).
• the purpose of using the acquired operation amount X in the first mode may be the purpose of controlling the operation of a device other than the electric booster 3.
• the vehicle 1 is equipped with the electric booster 3 .
• the vehicle 1 does not have to be equipped with the electric booster 3.
• the acquired operation amount X may be used to control the operation of the hydraulic control unit 4.
• the vehicle 1 may be an engine vehicle equipped with only an engine as a drive source, an electric vehicle equipped with only a motor as a drive source, or an electric vehicle equipped with both an engine and a motor as a drive source. It may be a hybrid vehicle.

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• Engineering & Computer Science (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Valves And Accessory Devices For Braking Systems (AREA)
• Braking Systems And Boosters (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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ID=89378669

Family Applications (1)

Country Status (4)

Citations (4)

• 2023
  • 2023-11-28 JP JP2024562382A patent/JPWO2024121673A1/ja active Pending
  • 2023-11-28 CN CN202380083908.0A patent/CN120322360A/zh active Pending
  • 2023-11-28 DE DE112023005132.1T patent/DE112023005132T5/de active Pending
  • 2023-11-28 WO PCT/IB2023/061961 patent/WO2024121673A1/ja not_active Ceased

Patent Citations (4)

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