KR0147166B1 - A performance test device of abs - Google Patents

Abstract

The present invention relates to a test apparatus for an anti-lock brake system (hereinafter referred to as ABS), and includes a sub-motor for generating a rotational force corresponding to the rotational state of each wheel of an automobile, and mounted on one side of the sub-motor. To a rotating tooth ring, a vehicle speed sensor for detecting the rotational speed of the tooth ring, an electronic controller for controlling the operation of ABS according to the vehicle speed input from the vehicle speed sensor, and a braking control signal output from the electronic controller. According to the present invention, a modulator for adjusting the hydraulic pressure applied to each wheel during braking, a master cylinder for supplying a constant hydraulic pressure during braking to the modulator, a pump for supplying hydraulic pressure to the modulator by receiving a control signal output from the electronic controller, Hydraulic measurement means for measuring a numerical value of the hydraulic pressure supplied from the modulator according to a control signal output from the electronic controller; It receives the measured data from the pressure measuring means and displays it, and it consists of a computer that controls the rotation of the sub-motor. It is to be able to test each driving state of ABS in the car.

Description

Performance tester of anti-lock brake system

1 is a configuration diagram of the performance test apparatus of the anti-lock brake system according to the present invention.

* Explanation of symbols for main parts of the drawings

1A-1D: Submotor 2A-2D: Tooth Ring

3A-3D: Vehicle speed sensor 4: Electronic controller

5: modulator 6: master cylinder

7: Pump 8A-8D: Hydraulic measuring means

9: computer

The present invention relates to a test apparatus for an anti-lock brake system (ABS), and in particular, to simulate each driving device of the ABS corresponding to the actual load and speed of the vehicle. The present invention relates to an apparatus for testing the performance of an anti-lock brake system for testing the driving state of ABS.

In general, the braking distance of the vehicle means the distance from the driver's brake pedal operation point to the point of complete stop while driving, and this braking distance varies depending on the driving speed of the vehicle and the load of the vehicle. Therefore, in order to shorten this braking distance as much as possible, an anti-lock brake system (hereinafter referred to as an ABS system) has recently been widely used in automobiles.

As described above, the ABS mounted on the vehicle is directly connected to the safety of the occupant when the vehicle is braked, so the reliability of each driving device configuring the ABS must be secured. Therefore, there is a need to check the performance of each drive device from time to time in the development of a new model, as well as ABS mounted in the existing vehicle.

As described above, in order to test the performance of the ABS, conventionally, the motor is rotated by applying power to a motor that reproduces the speed of two wheels mounted on an automobile, and then operates the ABS. At this time, it extracts data showing the process of braking the motor by using ABS, and uses the data to measure the pressure, speed, etc. of the wheels on the computer, calculate the vehicle speed, etc. It became.

However, the conventional ABS test performance device is complicated in structure by its load and speed corresponding to the actual vehicle, and the test device is large in size, and the composition is complicated. Is difficult to reproduce, so it is difficult to make a comparative evaluation between ABS.

The performance testing device of the anti-lock brake system according to the present invention was invented to solve the above problems, and the existing ABS test by simulating each driving device of the ABS corresponding to the actual load and speed of the vehicle. Compared to the device, it is possible to simply analyze the existing ABS mounted on the vehicle, as well as to evaluate the performance of the electronic control device, the driving device, etc. in the development of the ABS. In addition, it is possible to execute a search effect and algorithm check on the ABS program, and it is possible to simulate the actual vehicle test on the ABS by inputting a condition corresponding to the actual vehicle experiment. The objective is to provide a performance testing device for an anti-lock brake system capable of testing the performance of parts in the assembly line of ABS.

The present invention for achieving the above object, the sub-motor for generating a rotational force corresponding to the rotational state of each wheel of the vehicle, the toothed ring mounted on one side of the sub-motor to rotate, and the rotational speed of the toothed ring A vehicle speed sensor for detecting, an electronic controller for controlling the operation of the ABS according to the vehicle speed input from the vehicle speed sensor, and a modulator for adjusting the hydraulic pressure applied to each wheel when braking according to the brake control signal output from the electronic controller And a master cylinder for supplying a constant hydraulic pressure at the time of braking to the modulator, a pump for supplying hydraulic pressure to the modulator in response to a control signal output from the electronic controller, and supplied from the modulator by a control signal output from the electronic controller. Hydraulic measurement means for measuring the numerical value of the hydraulic pressure and the data measured by the hydraulic measurement means Said display, it is characterized by made of an computer for controlling the rotation of the servo motor.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an anti-lock brake system according to the present invention. As shown therein, the sub-motors 1A-1D generating data of four wheel states of an actual driving vehicle, and ABS in a vehicle It is mounted on the wheel shaft during the installation of the cogwheel (2A-2D) and is rotated by receiving a rotational force generated from the sub-motor (1A-1D), and is provided spaced apart from the tooth ring (2A-2D) by a predetermined interval An electronic control unit connected to the vehicle speed sensor 3A-3D for detecting the rotational speed of the toothing rings 2A-2D and the output terminal of the vehicle speed sensor 3A-3D to control the operation of the ABS according to the input vehicle speed. (4), the modulator 5 for braking the vehicle according to the ABS braking control signal output from the electronic control unit 4, and when the driver presses the brake pedal to perform braking, the hydraulic pressure is fixed to the modulator 5 To the master cylinder 6 and the electronic controller 4 for supplying A pump 7 for supplying hydraulic pressure to the modulator 5 in response to the output control signal, and a hydraulic pressure for measuring a numerical value of the hydraulic pressure supplied from the modulator 5 according to the control signal output from the electronic controller 4. It consists of a computer 9 which receives the data measured by the measuring means 8A-8B and the hydraulic measuring means 8A-8D, displays it, and operates the sub-motors 1A-1D.

The detailed operation and effects of the present invention having such a configuration will be described below.

In the ABS performance test apparatus of the present invention, the control signal is output to the sub-motors 1A-1D according to the data indicating the state of each wheel of the vehicle during the actual vehicle test in the computer 9, thereby rotating the sub-motors 1A-1D. The rotation of each wheel of the car is reproduced. That is, the computer 9 rotates the sub-motors 1A-1D by outputting a control signal to the sub-motors 1A-1D which reproduces the rotation of each wheel of the vehicle in accordance with the data initially input. The rotational force generated in the submotors 1A-1D is transmitted to the tooth rings 2A-2D mounted on the submotors 1A-1D, so that the tooth rings 2A-2D also rotate. When the tooth ring (2A-2D) rotates, the vehicle speed sensor (3A-3D), which is installed at a predetermined distance from the tooth ring (2A-2D), measures the speed at which the submotor (1A-1D) rotates and the electronic control unit Enter in (4). The running speed and the wheels of the wheels reproduced by the rotation of the sub-motors 1A-1D in the electronic controller 4 which receives the rotation state of the sub-motors 1A-1D by the detection of the vehicle speed sensor 3A-3D. By calculating the deceleration of the modulator 5 and the pump 7 to output a signal for controlling the pressure during braking of each wheel. Therefore, the pump 7 which receives the control signal from the electronic control unit 4 is driven, and when the tester presses the brake pedal while the hydraulic pressure is supplied from the master cylinder 6 while supplying the hydraulic pressure to the modulator 5, the modulator ( In 5), the sub-motors 1A-1D rotate to each wheel to the hydraulic measuring means 8A-8D mounted at the output end of the modulator 5 according to the vehicle speed detected by the vehicle speed sensor 3A-3D. Supply a specific pressure to perform braking. The oil pressure detected by the oil pressure measuring means 8A-8D is input to the computer 9 and the computer 9 visually displays the input value over time to evaluate the performance of the ABS. In addition, in the present invention, the performance of the ABS can be evaluated by replacing the electronic controller 4 and the modulator 5 with new parts, and then reproducing the time and input values, which are initial signals, when evaluating the performance of the ABS. In place of 4), algorithms using simple boards and computers are also available.

As described above, according to the present invention, each drive device of the ABS can be simulated simply and correspondingly to the actual speed of the vehicle, so that the existing ABS mounted on the vehicle can be analyzed, as well as the electronic control during the development of the ABS. It is possible to compare and evaluate the performance of devices, driving devices, etc., and to perform the search effect on the ABS program and to check the algorithms, and to simulate the actual vehicle on ABS by inputting the conditions corresponding to the actual vehicle experiments. It is possible to determine whether or not reproducibility is checked when inspecting parts on the production line.

Claims (1)

Sub motors 1A-1D for generating a rotational force corresponding to the rotational state of each wheel of the vehicle, toothed rings 2A-2D mounted and rotated on one side of the submotors 1A-1D, and the toothed ring A vehicle speed sensor 3A-3D for detecting the rotational speed of 2A-2D, an electronic controller 4 for controlling the operation of ABS according to the vehicle speed input from the vehicle speed sensor 3A-3D, and A modulator 5 for adjusting the hydraulic pressure applied to each wheel during braking according to the braking control signal output from the electronic controller 4, a master cylinder 6 for supplying a constant hydraulic pressure during braking to the modulator 5; A pump 7 for supplying hydraulic pressure to the modulator 5 by receiving the control signal output from the electronic controller 4 and the modulator 5 supplied from the modulator 5 by the control signal output from the electronic controller 4. Measurement by the oil pressure measuring means 8A-8D which measures the numerical value of oil pressure, and the said oil pressure measuring means 8A-8D. The data received, and display them, anti-lock performance test device of the brake system, characterized in that consisting of a computer 9 for controlling the rotation of the servo motor (1A-1D).