| Summary: | 碩士 === 國立成功大學 === 機械工程學系 === 85 === The objective of an anti-lock braking system(ABS) is to maximize the tiretractive force between wheel and road surface by regulating the braking pistonpressure and to shorten the braking distance whilst maintaining adquate vehiclesteerability and stability. Due to the following reasons the controller design of an anti-lock braking system has some difficulties: (1)High nonlinear relationship of thevehicle-braking system and the tractive force between wheel and road surface.(2)Theoptimal slip ratio, where the maximum tire tractive fore occured, varies with road parameters, vehicle velocity and loads.(3)Time delay of the hydraulic braking system.
The main study of the paper is to design an ABS controller: including slip ratio predictor, road condition detector, optimal slip ratio searching and neural-ftuzzy controller. The braking performance is examined on different road conditions, rapidly road conditions change with different loads and pedal forces. The experiments of the ABS controller are undertaken with Ford''s braking devices.
|
|---|
