JPH08202254A - Brake reaction force simulator - Google Patents

Abstract

(57) [Abstract] [Purpose] In a driving simulator, the reaction force received when the driver operates the brake pedal is simulated by using a servo motor that can be controlled by a personal computer to simulate a brake that matches the actual vehicle. The purpose is to facilitate the adjustment of the reaction force to be performed. [Structure] A brake pedal 1 operated by a driver, wire cables 2 and 5 for transmitting a brake opening V _B and a reaction force T, a link 4, a rack 7, a pinion 12, a linear sliding potentiometer 8 and a servo motor 11. , The personal computer 9 for calculating the reaction force T and the reaction force T from the personal computer 9
The motor driver 10 drives the servo motor 11 according to the signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving simulator for simulating a running state of an automobile, for simulating a reaction force received when a driver operates a brake pedal.

[0002]

2. Description of the Related Art Conventionally, as a device for simulating a reaction force received when a driver operates a brake pedal 1 in a driving simulator, conventionally, there is a device using a spring, a wire cable, and a link.
Shown in 6 is a state diagram when the brake pedal 1 is not operated, and FIG. 7 is a state diagram when the brake pedal 1 is operated.

When the driver operates the brake pedal 1, the wire cable 2 moves inside the cable film 3 (the cable film 3 does not move).
Rotates rotationally leftward about the fulcrum B. The rotational movement of the link 4 causes the wire cable 5 to move inside the cable film 6 (the cable film 6 does not move), so that the spring 26 contracts. The simulation is performed by causing the brake pedal 1 to generate a reaction force obtained by transmitting the restoring force of the spring 26 to the brake pedal 1 via the wire cable 5, the link 4, and the wire cable 2.

[0004]

However, since the reaction force varies depending on the type of vehicle in the actual vehicle, it is necessary to easily adjust the reaction force when the brake is simulated by the driving simulator. However, in the prior art, since the reaction force is generated by the restoring force of the spring 26, the spring 26 must be replaced in order to adjust the reaction force.

In order to solve this drawback, it is an object of the present invention to make it possible to easily adjust the reaction force of the brake reaction force simulating device.

[0006]

According to the present invention, in order to achieve the above-mentioned object, a personal computer takes in a signal of a brake opening, a reaction force is internally calculated, and a signal of the reaction force obtained by the calculation is output to a motor driver. The servo motor is driven by outputting to the brake pedal, and the driving force is transmitted to the brake pedal to generate a reaction force.

[0007]

[Operation] As a result of outputting the reaction force signal obtained by the reaction force calculation performed by the personal computer to the motor driver to drive the servo motor and transmitting the driving force to the brake pedal to generate the reaction force Since the reaction force is adjusted by changing the reaction force calculation program, the reaction force can be easily adjusted.

[0008]

Embodiments of the present invention will be described below with reference to FIGS.

The present embodiment relates to a brake reaction force simulation device used in a driving simulator. Figure 1,
From 2 the system configuration of the brake reaction force simulator, Figures 3-5
The mechanical portion of the brake reaction force simulator will be described below.

The system configuration of the brake reaction force simulator will be described. 1 is a state diagram when the brake pedal 1 is not operated, and FIG. 2 is a state diagram when the brake pedal 1 is operated. When the driver operates the brake pedal 1, the wire cable 2 moves inside the cable film 3 (the cable film 3 does not move), so that the link 4 rotates leftward about the fulcrum B. Link 4
The wire cable 5 becomes a cable film 6 due to the rotating motion of the
Since it moves inside (the cable film 6 does not move),
The rack 7 moves to the left. When the rack 7 moves to the left, the linear sliding potentiometer 8 detects the brake opening V _B and transfers the signal to the personal computer 9. The personal computer 9 outputs the signal of the reaction force T obtained by taking in the signal of the brake opening degree V _B and internally calculating the reaction force to the motor driver 10 to drive the servo motor 11, and the driving force thereof. A reaction force is generated by being transmitted to the brake pedal 1 via the rack 12, the rack 7, the wire cable 5, the link 4, and the wire cable 2.

The mechanism section will be described with reference to FIG. The rack 7 includes rack holders 14 and 15 attached to the vehicle body 13.
Is supported by. Therefore, when the rack 7 is moved by the operation of the brake pedal 1 and the driving of the servo motor 11, the abrasion due to the friction between the rack 7 and the rack holders 14 and 15 becomes a problem. Therefore, as an example, as shown in FIG. 5, bushes 16 and 17 that are hard to wear and that can be replaced when worn are pressed into the rack holders 14 and 15 so that the rack 7 moves on the inner surfaces of the bushes 16 and 17. . Further, in order to move the rack 7 smoothly, the inner diameter D of the bushes 16 and 17 is 0.01 to more than the diameter d of the rack.
Increase by 0.05 mm.

As shown in FIG. 4, since the cable film 6 and the bolt 18 have through holes, the wire cable 5 can be passed through the through holes. Further, by making the diameter d ′ of the head of the cable film 6 and the diameter D ′ of the counterbore hole of the bolt 18 equal, it is possible to fit the head of the cable film 6 into the counterbore hole of the bolt 18. Thereby, the cable film 6
Is fixed.

The wire cables 2 and 5 serve as one element for transmitting the brake opening V _B by the brake pedal 1 to the linear sliding potentiometer 8 and transmitting the reaction force T generated by the servomotor 11 to the brake pedal 1. using. Therefore, in order to smoothly transmit the brake opening V _B and the reaction force T, it is necessary to devise a method of attaching the wire cables 2 and 5 to each transmission element (rack 7, link 4, brake pedal 1). is there. A method of attaching the wire cables 2 and 5 and the transmission elements will be described with reference to FIG. A screw 2 is used to attach one end of the wire cable 5 to the rack 7.
The wire cable 5 is passed through the through hole 0, and the screw 20 passing through the wire cable 5 is attached to the rack 7.
In the same way, brake pedal 1 and wire cable 2,
Attach the link 4 and the wire cable 2, and the link 4 and the wire cable 5.

Since the brake pedal 1 and the link 4 rotate about the fulcrums A and B, respectively, they are attached to the vehicle bodies 23 and 24 with screws 21 and 22 as shown in FIG. Linear sliding potentiometer 8 and the rack 7 can be detected by the linear slide-type potentiometer 8 signals of the brake opening V _B by attaching with screws 25 as shown in FIG. Figure 8 shows an example of calculating the reaction force inside a personal computer. Where reaction force T
Is proportional to the brake opening V _B , and its proportional constant can be changed. Pattern 1 to pattern 3
You can choose either.

[0015]

According to the present invention, the reaction force can be adjusted by changing the program for calculating the reaction force that runs on the personal computer 9. Therefore, the reaction force can be adjusted so as to simulate the brake according to the actual vehicle. Is easier than the conventional simulation method.

[Brief description of drawings]

FIG. 1 is a diagram showing an overall configuration of the present invention.

FIG. 2 is a diagram showing the movement of each component when the brake pedal 1 is operated.

FIG. 3 is a detailed view of a brake reaction force simulating device mechanism according to the present invention.

FIG. 4 is an exploded view showing a method of attaching the cable film 6.

FIG. 5 is an exploded view showing a method of mounting the rack 7 and the linear sliding potentiometer 8.

FIG. 6 is a diagram showing a configuration of a brake reaction force simulation device based on a restoring force of a spring 26.

FIG. 7 is a diagram showing the movement of each component when the brake pedal 1 is operated.

FIG. 8 is a reaction force calculation diagram inside the personal computer 9.

[Explanation of symbols]

1 brake pedal, 2 wire cable, 3
Cable film, 4 link, 5 wire cable,
6 cable coating, 7 rack, 8 linear sliding potentiometer, 9 PC, 10 motor driver, 11 servo motor, 12 pinion, 1
3 vehicle body, 14 rack holder, 15 rack holder, 16 bush, 17 bush, 18 bolt, 19 nut, 20 screw, 21 screw, 2
2 screws, 23 car bodies, 24 car bodies, 25 screws,
26 springs, 27 handles

Claims (1)

[Claims] 1. In a driving simulator, a wire cable having a brake opening degree connected to a brake pedal, a link in contact with the wire cable, a wire cable connected to the link, and a rack connected to the wire cable. Is transmitted to a linear sliding potentiometer via a computer, the signal is taken in by a personal computer, a reaction force is calculated to simulate the reaction force acting on the brake pedal, and the signal of the reaction force obtained by the calculation is sent to the motor driver. To drive the servo motor and transmit the driving force to the brake pedal via the pinion, the rack, the wire cable, the link and the wire cable 2.