| 摘要 |
PURPOSE: An ABS(Anti-lock Brake System) simulator is provided to check an electronically controlled ABS and to educate the system collectively. CONSTITUTION: An ABS simulator comprises a control part and an apparatus part. The control part comprises a personal computer including an operating program and a universal data acquisition control device for interface. The apparatus part comprises a booster cylinder(201), an air service unit(202), a solenoid valve, a wheel speed sensor(203), a wheel speed controller, an ABS ECU(Electronic Control Unit, 205), a terminal platform(206), an air motor(207), a pressure sensor(209) and a circuit diagram(210). The air service unit filters off moisture in air, controls pneumatic pressure and helps lubricating action of the booster cylinder. The solenoid valve adjusts the supply and discharge of air. The pressure sensor measures the pressure of each wheel. The circuit diagram show flow of the system. The simulator has automatic mode and manual mode. For the automatic mode, a user programs velocity diagram for the each wheel instead of the velocity of each wheel of a real car. The control part generates frequencies according to the programmed velocity diagram to input to the ABS ECU. The solenoid valve in the air motor receives control signal to control the velocity of the wheels to prevent sliding due to locking phenomenon of the each wheel. The pressure of hydraulic pressure line connected with the each wheel is controlled by the signal. The pressure sensor detects pressure of each part to display.
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