JPH0752769A - Brake control device for vehicle - Google Patents

Abstract

PURPOSE:To secure a car brake controller that performs a mechanical brake operation via a master cylinder at a time when a leg-power detecting sensor gets out of order. CONSTITUTION:This brake control unit is provided with a controller 30 which generates a trouble signal after detecting something wrong with a leg power detecting sensor 2 from the presence of operation of a brake pedal 1 and brake operating force, and in this constitution, it is so switched that brake fluid pressure to be fed to four wheel cylinders 9 to 12 from a linear control valve 8 at the normal time is fed out of a master cylinder 16 by a selector valve 18 at a time when the trouble signal indicating something wrong with the leg power detecting sensor 2 is generated. Accordingly, at the time of trouble in this sensor, a supply source of the brake fluid pressure for these four wheel cylinders 9 to 12 is automatically switched from the linear control valve to the master cylinder 16, so that a mechanical brake operation by the master cylinder 16 is thus performable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular brake control device using a linear control valve, and more particularly to a vehicular brake for controlling a brake fluid pressure to a wheel cylinder by operating a linear control valve using a pedaling force detection sensor. Regarding the control device.

[0002]

2. Description of the Related Art FIG. 4 shows an example of a conventional vehicle brake control device. In FIG. 4, the vehicle brake control device includes a pedal effort detection sensor 2 that detects the pedal effort of the brake pedal 1 to generate a pedal effort signal, and a brake fluid pressure signal that is connected to the pedal effort detection sensor 2 and that is based on the pedal effort signal. A controller 3 that is a means for generating a brake fluid pressure signal, and a brake fluid that is connected to this controller 3 and is to be supplied to brake wheel cylinders 9 to 12 provided on each wheel of the vehicle based on the brake fluid pressure signal. And a linear control valve 8 for controlling the pressure to a predetermined value. Connected to the controller 3 are a travel control controller 4 that supplies a signal representing a target deceleration, an acceleration sensor 5 that detects the longitudinal acceleration of the vehicle, and a wheel speed sensor 6 that detects the rotational speed of the wheels. The controller 3 generates a brake fluid pressure signal based on the signals from the traveling control controller 4, the acceleration sensor 5, and the wheel speed sensor 6 and the pedal effort signal from the pedal effort detection sensor 2. The brake fluid pressure signal is sent to the above-mentioned linear control valve 8 through the operation amplifier 7.
The linear control valve 8 adjusts the brake fluid pressure from the brake fluid pressure supply source composed of the brake fluid reservoir 13, the pressurizing pump 14 and the accumulator 15 according to the brake fluid pressure signal to obtain an appropriate brake. Hydraulic pressure is supplied to the wheel cylinders 9-12.

In this device, the pedaling force detection sensor 2 supplies a pedaling force signal corresponding to the pedaling force of the brake pedal 1 to the controller 3, while the traveling controller 4 supplies a signal representing the target deceleration to the controller 3. ,
The controller 3 determines the final target deceleration from this information. The controller 3 also calculates the actual vehicle deceleration and slip ratio based on the signals from the acceleration sensor 5 and the wheel speed sensor 6. The controller 3 calculates the target brake fluid pressure from these signals, generates a brake fluid pressure signal, and operates the linear control valve 8 based on this brake fluid pressure signal. That is, in this device, even if the wheels are about to lock due to a sudden braking operation by the driver, the brake fluid pressure is smoothly adjusted at the limit point, and the slip ratio becomes an appropriate value.

[0004]

In such a conventional vehicle brake control device, there is a possibility that the pedal effort detection sensor 2 will malfunction during operation of the brake. In such a case, Since the output of the pedal effort detection sensor 2 is independent of the operation of the brake pedal 1, the operation of the brake pedal 1 by the driver is not reflected in the operation of the brake device, and it is not necessary to further apply or loosen the brake. It will be possible. In some cases, it is very dangerous because the brake will not work at all. At this time, the driver notices an abnormality in the brake, but does not know what caused the abnormality.

The present invention is intended to solve such a problem, and an object of the present invention is to provide a vehicle brake control device in which a brake operates normally even if a pedal effort detection sensor fails. .

[0006]

In order to solve the above-mentioned problems, a vehicle brake control device of the present invention according to claim 1 is a pedal force detection sensor for detecting a pedal force of a brake pedal to generate a pedal force signal. , A brake fluid pressure signal generating means for generating a brake fluid pressure signal based on a pedaling force signal, a linear control valve for controlling a brake fluid pressure supplied to a wheel cylinder based on the brake fluid pressure signal to a predetermined value, and a brake pedal An operation detection unit that detects the presence or absence of an operation and generates an operation signal, a failure detection unit that detects a failure of the pedal effort detection sensor based on the operation signal and the pedal effort signal, and generates a failure signal, and works in conjunction with the brake pedal. Between the master cylinder that supplies the brake fluid pressure to the wheel cylinder according to the pedaling force of the brake pedal, the linear control valve and the wheel cylinder, and It has a switching valve that is connected between the star cylinder and the wheel cylinder and selectively connects the wheel cylinder to the linear control valve or the master cylinder according to the failure signal from the failure detection means. The pressure source is switched from the linear control valve to the master cylinder.

Further, in the vehicle brake control device according to the second aspect of the invention, since the vehicle brake control device is provided with the failure notification means which is connected to the failure detection means and warns of the failure according to the failure signal, In the event of a failure, the supply source of brake fluid pressure to the wheel cylinder is switched from the linear control valve to the master cylinder and a failure alarm is issued.

[0008]

In the vehicle brake control device according to the present invention, when the pedal force detection sensor is normal, the brake fluid pressure is supplied from the linear control valve to the wheel cylinder, but when the pedal force detection sensor fails. The switching valve is switched based on the failure signal, and the brake fluid pressure is supplied from the master cylinder to the wheel cylinder.

In the vehicle brake control device according to the second aspect of the present invention, when the pedal force detection sensor has a failure, the failure signal activates the failure notification means to generate an alarm.

[0010]

【Example】

Example 1. A vehicle brake control device of the present invention shown in FIG. 1 includes a pedal effort detection sensor 2 that detects a pedal effort of a brake pedal 1 to generate a pedal effort signal, and a brake fluid connected to the pedal effort detection sensor 2 based on the pedal effort signal. A controller 30 which is a brake fluid pressure signal generating means for generating a pressure signal,
A linear control valve 8 which is connected to the controller 30 and controls the brake fluid pressure to be supplied to the brake wheel cylinders 9 to 12 provided on each wheel of the vehicle to a predetermined value based on the brake fluid pressure signal. ing. The traveling control controller 4 that supplies a signal representing the target deceleration to the controller 30 that is the brake fluid pressure signal generating means.
And an acceleration sensor 5 for detecting the longitudinal acceleration of the vehicle.
And a wheel speed sensor 6 for detecting the rotation speed of the wheel are connected, and the brake fluid pressure signal generating means is constituted by the traveling control controller 4, the acceleration sensor 5, and the wheel speed sensor 6.
The brake fluid pressure signal is generated based on the signal from the pedal pressure sensor and the pedal force signal from the pedal force detection sensor 2. The brake fluid pressure signal is supplied to the above-mentioned linear control valve 8 through the operation amplifier 7, and the linear control valve 8 causes the brake fluid reservoir 1 to operate.
3, adjusting the brake fluid pressure from the brake fluid pressure supply source composed of the pressurizing pump 14 and the accumulator 15 to an appropriate brake fluid pressure according to the brake fluid pressure signal,
Pipe lines 20 and 2 having a switching valve 18 to be described later
1 to the wheel cylinders 9 to 12.

The vehicle brake control device of the present invention further comprises:
An operation detection unit 17 which is an operation switch provided so as to interlock with the brake pedal 1 and connected to the controller 30 is provided. The operation detecting means 17 detects when the driver operates the brake pedal 1, generates an operation signal indicating the presence or absence of the operation, and supplies the operation signal to the controller 30. Based on the operation signal from the operation detecting means 17 and the pedaling force detection signal from the pedaling force detection sensor 2, the controller 30 has a pedaling force detection sensor 2
There is provided a failure detecting means having a function of detecting the failure of and generating a failure signal.

The brake pedal 1 is further provided with a master cylinder 16 which works in conjunction with the brake pedal 1 to generate a brake fluid pressure according to the pedal effort. The master cylinder 16 is connected to the wheel cylinders 9 to 12 via a pipe 19, a switching valve 18, and a pipe 20 to supply brake hydraulic pressure to the wheel cylinders 9 to 12. As is apparent from the figure, the switching valve 18 is the linear control valve 8
And the wheel cylinders 9 to 12 and the master cylinder 16 and the wheel cylinders 9 to 12 are commonly connected. Normally, the wheel cylinders 9 to 12 are connected to the linear control valve 8 and a controller serving as a failure detecting means. A switching valve that connects the wheel cylinders 9 to 12 to the master cylinder 16 when a failure signal is supplied from 30. In other words, the switching valve 18 is a connection switching means that selectively connects the wheel cylinders 9 to 12 to the linear control valve 8 or the master cylinder 16 according to the failure signal.

The failure detection means of the controller 30 is connected to failure notification means which operates in response to a failure signal to display and warn the failure of the pedal effort detection sensor 2 by light or sound.

In this device, the pedaling force detection sensor 2 supplies a pedaling force signal corresponding to the pedaling force of the brake pedal 1 to the controller 30, while the traveling control controller 4 supplies a signal representing the target deceleration to the controller 30. The controller 30 determines the final target deceleration from these pieces of information. The controller 30 also calculates the actual vehicle deceleration and slip ratio based on the signals from the acceleration sensor 5 and the wheel speed sensor 6. Controller 3
0 calculates the target brake fluid pressure from these signals, generates a brake fluid pressure signal, and operates the linear control valve 8 based on this brake fluid pressure signal. That is, in this device, even if the wheels are about to lock due to a sudden braking operation by the driver, the brake fluid pressure is smoothly adjusted at the limit point, and the slip ratio becomes an appropriate value.

FIG. 2 is a flow chart of a program executed by the controller 30 of the vehicle brake control device of the present invention. The controller 30 starts executing the program when the engine is started. First, in step 100, the controller 30 sends to the controller 30 a pedaling force signal indicating the pedaling force of the brake pedal 1 from the pedaling force detection sensor 2, an operation signal indicating whether or not the brake pedal 1 is operated by the operation detecting means 17, and an actual signal from the acceleration sensor 5. The deceleration signal and the wheel speed signal from the wheel speed sensor 6 are input. Next, at step 101, the target deceleration is input from the traveling controller 4. In the next step 102, a failure determination of the pedal effort detection sensor 2 is performed. That is, the operation detecting means 1
When the pedaling force detection sensor 2 is in the OFF state and the pedaling force signal of the pedaling force detection sensor 2 is a predetermined value or more, or when the operation detecting means 17 is ON and the pedaling force signal of the pedaling force detection sensor 2 is a predetermined value or less, it is determined that the pedaling force detection sensor 2 is in failure. To be done. If there is no failure, the routine proceeds to step 103, where the pedaling force signal representing the pedaling force of the brake pedal 1 is converted into deceleration, and this deceleration is compared with the target deceleration from the travel control controller 4 obtained at step 101. , The larger one of them is the target deceleration. In step 104, the actual deceleration obtained in step 100 is compared with the target deceleration obtained in step 103, and the target brake hydraulic pressure is calculated from the calculation result of the slip ratio obtained from the signal of the wheel speed sensor 6. . In step 105, the switching valve 18 is driven to connect the pipeline 20 and the pipeline 21. In step 106, a current value for driving the linear control valve 8 is calculated from the target brake hydraulic pressure obtained in step 104, and the linear control valve 8 is driven based on the current value. Then, the process returns to step 100.

If it is determined in step 102 that the pedal effort detection sensor 2 is out of order, a failure signal is generated and the process proceeds to step 107 to set the target brake fluid pressure to zero. In the next step 108, the switching valve 1
The drive of No. 8 is stopped, the pipe 20 and the pipe 19 are connected, and the wheel cylinder is connected to the master cylinder 16. In step 109, the target brake hydraulic pressure is set to zero and the linear control valve 8 is driven. Further, in step 110, the notification means 22 is activated, and then the process returns to step 100.

Example 2. FIG. 2 shows a modification of the present invention.
In this device, a pressure sensor 23 is provided in the conduit 19 instead of the operation detecting means 17, the output hydraulic pressure of the master cylinder 16 is detected by this pressure sensor 23, and the failure of the pedal effort detection sensor 2 is determined from the detected value. I am doing it. In that case, in step 102 of FIG. 2, the output of the pressure sensor is converted into the output of the pedaling force detection sensor 2, and the converted value and the output value of the pedaling force detection sensor 2 are compared. , It is determined that the pedal effort detection sensor 2 has a failure. Alternatively, the output of the pedal effort detection sensor 2 may be converted into the output of the pressure sensor, and the failure determination may be made based on the difference between them.

[0018]

According to the first aspect of the present invention, the vehicle brake control device detects a pedal effort of the brake pedal to generate a pedal effort signal, and a brake fluid pressure signal based on the pedal effort signal. Brake fluid pressure signal generating means, a linear control valve that controls the brake fluid pressure supplied to the wheel cylinders to a predetermined value based on the brake fluid pressure signal, and an operation signal that detects whether or not the brake pedal is operated. The operation detection means that is generated, the failure detection means that detects a failure of the pedal effort detection sensor based on the operation signal and the pedal effort signal, and generates a failure signal, and the brake fluid pressure that is linked to the brake pedal and that corresponds to the pedal effort of the brake pedal. Between the master cylinder and the cylinder cylinder that supplies the cylinder to the wheel cylinder, the linear control valve and the wheel cylinder, and the master cylinder and the wheel cylinder. It is equipped with a switching valve that is connected between them and that selectively connects the wheel cylinder to the linear control valve or the master cylinder according to the failure signal from the failure detection means. The supply source of is automatically switched from the linear control valve to the master cylinder, and mechanical braking operation by the master cylinder can be performed.

Further, in the vehicle brake control device according to the second aspect of the invention, since the vehicle brake control device is provided with the failure notification means which is connected to the failure detection means and warns of the failure according to the failure signal, the pedal force detection sensor In the event of a failure, the supply source of brake fluid pressure to the wheel cylinder is switched from the linear control valve to the master cylinder and a failure alarm is issued.The driver is switched to mechanical braking operation by the master cylinder when a failure occurs in the brake system. I can know that.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of a vehicle brake control device according to the invention.

FIG. 2 is a flowchart of a program executed by the controller of FIG.

FIG. 3 is a configuration diagram showing a second embodiment of the vehicle brake control device according to the present invention.

FIG. 4 is a configuration diagram showing an example of a conventional vehicle brake control device.

[Explanation of symbols]

1 brake pedal 2 pedal force detection sensor 8 linear control valve 9 to 12 wheel cylinder 16 master cylinder 17,23 operation detection means 18 switching valve 22 failure notification means 30 controller (brake hydraulic pressure signal generation means, failure detection means)

[Procedure amendment]

[Submission date] December 16, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art FIG. 4 shows an example of a conventional vehicle brake control device. In FIG. 4, the vehicle brake control device includes a pedal effort detection sensor 2 that detects the pedal effort of the brake pedal 1 to generate a pedal effort signal, and a brake fluid pressure signal that is connected to the pedal effort detection sensor 2 and that is based on the pedal effort signal. A controller 3 that is a means for generating a brake fluid pressure signal, and a brake wheel series that is connected to the controller 3 and is provided on each wheel of the vehicle based on the brake fluid pressure signal.
The brake fluid pressure to be supplied to the emissions da 9 to 12 and a linear control valve 8 for controlling a predetermined value. Connected to the controller 3 are a travel control controller 4 that supplies a signal representing a target deceleration, an acceleration sensor 5 that detects the longitudinal acceleration of the vehicle, and a wheel speed sensor 6 that detects the rotational speed of the wheels. The controller 3 generates a brake fluid pressure signal based on the signals from the traveling control controller 4, the acceleration sensor 5, and the wheel speed sensor 6 and the pedal effort signal from the pedal effort detection sensor 2. The brake fluid pressure signal is supplied to the above-mentioned linear control valve 8 through the operation amplifier 7, and the linear control valve 8 causes the brake fluid reserve
The brake fluid pressure from the brake fluid pressure supply source, which is composed of the bar 13, the pressurizing pump 14 and the accumulator 15, is adjusted according to the brake fluid pressure signal to supply the appropriate brake fluid pressure to the wheel cylinders 9 to 12. .

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0004]

In such a conventional vehicle brake control device, there is a possibility that the pedal effort detection sensor 2 will malfunction during operation of the brake. In such a case, Since the output of the pedal effort detection sensor 2 is independent of the operation of the brake pedal 1, the operation of the brake pedal 1 by the driver is not reflected in the operation of the brake device, and it is not necessary to further apply or loosen the brake. It will be possible. In some cases, it is very dangerous because the brake will not work at all. At this time, although the driver <br/> notice an abnormality in the brake, it is not known until either the cause of the abnormality is.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

In order to solve the above-mentioned problems, a vehicle brake control device of the present invention according to claim 1 is a pedal force detection sensor for detecting a pedal force of a brake pedal to generate a pedal force signal. a brake fluid pressure signal generating means for generating a brake fluid pressure signal based on a depression force signal, and a linear control valve that controls the brake fluid pressure supplied to the wheel silicon down da based on the brake fluid pressure signal to a predetermined value, the brake An operation detection unit that detects the presence or absence of pedal operation and generates an operation signal, a failure detection unit that detects a failure of the pedal effort detection sensor based on the operation signal and the pedal effort signal, and generates a failure signal, and works in conjunction with the brake pedal. if between and the master silicon down da supplying the brake fluid pressure according to the depression force applied to the brake pedal to the wheel cylinder, linear control valve and the wheel cylinder To be connected between the master silicon down Da and the wheel cylinder, provided in accordance with the failure signal from the failure detecting means of the wheel cylinders on linear control valve or master cylinder and a switching valve for selectively connecting the wheel Siri when a failure of the pedal force detection sensor the source of the brake fluid pressure to the down da is adapted to be switched from the linear control valves to the master <br/> silicon down da.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

Further, in the vehicle brake control device according to the second aspect of the invention, since the vehicle brake control device is provided with the failure notification means which is connected to the failure detection means and warns of the failure according to the failure signal, the failure is a failure alarm with a source of brake fluid pressure to the wheel silicon down da is switched from the linear control valve to the master <br/> silicon down da.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008]

[Action] In the vehicular brake control apparatus according to claim 1, wherein, when pedal force detection sensor is normal, the brake hydraulic pressure from the linear control valve to the wheel silicon down Da is supplied, pedal force detection sensor fails in this case, to switch the switching valve based on the failure signal, the brake fluid pressure is supplied from the master silicon down da to the wheel silicon down da.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

[0010]

EXAMPLES Example 1. A vehicle brake control device of the present invention shown in FIG. 1 includes a pedal effort detection sensor 2 that detects a pedal effort of a brake pedal 1 to generate a pedal effort signal, and a brake fluid connected to the pedal effort detection sensor 2 based on the pedal effort signal. A controller 30 which is a brake fluid pressure signal generating means for generating a pressure signal,
Is connected to the controller 30, linear controlling the brake hydraulic pressure to be supplied to the wheel brake provided on each wheel of the vehicle <br/> silicon down da 9 to 12 based on the brake fluid pressure signal to a predetermined value And a control valve 8. The controller 30, which is a brake fluid pressure signal generating means,
A travel control controller 4 that supplies a signal representing a target deceleration, an acceleration sensor 5 that detects the acceleration in the front-rear direction of the vehicle, and a wheel speed sensor 6 that detects the rotational speed of the wheels are connected, and a brake fluid pressure signal is supplied. The generating means generates a brake fluid pressure signal based on the signals from the traveling control controller 4, the acceleration sensor 5 and the wheel speed sensor 6 and the pedaling force signal from the pedaling force detection sensor 2. The brake fluid pressure signal is supplied to the above-mentioned linear control valve 8 through the operation amplifier 7, and the linear control valve 8 causes the brake fluid reservoir 1 to operate.
3, adjusting the brake fluid pressure from the brake fluid pressure supply source composed of the pressurizing pump 14 and the accumulator 15 to an appropriate brake fluid pressure according to the brake fluid pressure signal,
Pipe lines 20 and 2 having a switching valve 18 to be described later
1 to the wheel cylinders 9 to 12.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

The brake pedal 1 is further provided with a master cylinder 16 which works in conjunction with the brake pedal 1 to generate a brake fluid pressure according to the pedal effort. The master cylinder 16 is connected to the wheel cylinders 9 to 12 via a pipe 19, a switching valve 18, and a pipe 20 to supply brake hydraulic pressure to the wheel cylinders 9 to 12. As is apparent from the figure, the switching valve 18 is the linear control valve 8
And are commonly connected to and between the master sheet <br/> Li down da 16 and the wheel cylinder 9 through 12 of the wheel cylinder 9 to 12, typically connects the wheel cylinders 9 to 12 in the linear control valve 8 A switching valve that connects the wheel cylinders 9 to 12 to the master cylinder 16 when a failure signal is supplied from the controller 30, which is failure detection means. In other words, the switching valve 18 is a connection switching means that selectively connects the wheel cylinders 9 to 12 to the linear control valve 8 or the master cylinder 16 according to the failure signal.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

Example 2. FIG. 2 shows a modification of the present invention.
In this apparatus, the conduit 19 instead of the operation detector 17 is provided a pressure sensor 23, by the pressure sensor 23 detects the output pressure of the master silicon down da 16, determine the failure of the pedal force detection sensor 2 from that value I am doing it. In that case, in step 102 of FIG. 2, the output of the pressure sensor is converted into the output of the pedaling force detection sensor 2, and the converted value and the output value of the pedaling force detection sensor 2 are compared. , It is determined that the pedal effort detection sensor 2 has a failure. Alternatively, the output of the pedal effort detection sensor 2 may be converted into the output of the pressure sensor, and the failure determination may be made based on the difference between them.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

[0018]

According to the first aspect of the present invention, the vehicle brake control device detects a pedal effort of the brake pedal to generate a pedal effort signal, and a brake fluid pressure signal based on the pedal effort signal. a brake fluid pressure signal generating means for generating a linear control valve that controls the brake fluid pressure supplied to the wheel silicon down da to a predetermined value based on the brake fluid pressure signal, the operation to detect the presence or absence of operation of the brake pedal Operation detecting means for generating a signal, failure detecting means for detecting a failure of the pedal effort detection sensor based on the operation signal and the pedal effort signal, and generating a failure signal, and a brake according to the pedal effort of the brake pedal in conjunction with the brake pedal a master silicon down da supplying hydraulic wheel cylinders, between linear control valve and the wheel cylinder and the master silicon down <br/> da and Hui Connected between Rushirinda, since according to the failure signal from the failure detecting means of the wheel cylinders on linear control valve or master cylinder and a switching valve for selectively connecting, at the time of failure of the pedal force detection sensor to the wheel silicon down da the source of the brake fluid pressure is automatically switched from the linear control valves to the master silicon down da, it is possible to perform a mechanical brake operation by the master cylinder.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

Further, in the vehicle brake control device according to the second aspect of the invention, since the vehicle brake control device is provided with the failure notification means which is connected to the failure detection means and warns of the failure according to the failure signal, the pedal force detection sensor the failure is a failure alarm with a source of brake fluid pressure to the wheel silicon down da is switched from the linear control valve to the master <br/> silicon down da, the driver fault occurs in the brake system, the master silicon down It is possible to know that the mechanical braking operation has been switched by the da.

[Procedure Amendment 12]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Reference Numerals] 1 brake pedal 2 depression force detecting sensor 8 linear control valve 9-12 wheel silicon down da 16 master cylinder 17 and 23 the operation detection unit 18 switching valve 22 failure notification unit 30 controller (brake fluid pressure signal generating means, malfunction Detection means)

Claims (2)

[Claims] 1. A pedaling force detection sensor for detecting a pedaling force of a brake pedal to generate a pedaling force signal, a brake fluid pressure signal generating means for generating a brake fluid pressure signal based on the pedaling force signal, and a brake fluid pressure signal. A linear control valve for controlling the brake fluid pressure supplied to the wheel cylinder based on a predetermined value, an operation detecting means for generating an operation signal by detecting whether or not the brake pedal is operated, and the operation signal and the pedaling force signal. A failure detection unit that detects a failure of the pedal effort detection sensor based on the failure signal and generates a failure signal, and a master cylinder that supplies a brake fluid pressure corresponding to the pedal effort of the brake pedal to the wheel cylinder in cooperation with a brake pedal, Connected between the linear control valve and the wheel cylinder and between the master cylinder and the wheel cylinder A switching valve that selectively connects the wheel cylinder to the linear control valve or the master cylinder according to the failure signal from the failure detection means, and when the pedal force detection sensor fails, the brake fluid pressure to the wheel cylinder is changed. A vehicle brake control device in which a supply source is switched from the linear control valve to a master cylinder. 2. A pedaling force detection sensor for detecting a pedaling force of a brake pedal to generate a pedaling force signal, a brake fluid pressure signal generating means for generating a brake fluid pressure signal based on the pedaling force signal, and a brake fluid pressure signal. A linear control valve for controlling the brake fluid pressure supplied to the wheel cylinder based on a predetermined value, an operation detecting means for generating an operation signal by detecting whether or not the brake pedal is operated, and the operation signal and the pedaling force signal. A failure detection unit that detects a failure of the pedal effort detection sensor based on the failure signal and generates a failure signal, and a master cylinder that supplies a brake fluid pressure corresponding to the pedal effort of the brake pedal to the wheel cylinder in cooperation with a brake pedal, Connected between the linear control valve and the wheel cylinder and between the master cylinder and the wheel cylinder A switching valve for selectively connecting the wheel cylinder to the linear control valve or the master cylinder according to the failure signal from the failure detection means, and a failure valve connected to the failure detection means and warning of the failure according to the failure signal A brake control device for a vehicle, which is provided with a failure alarming means for switching from the linear control valve to the master cylinder to supply a brake fluid pressure to the wheel cylinder when the pedal force detection sensor has a failure.