Nippondenso Co., Ltd.

Naoto Ohoka

Masahiro Ohba

Hiroaki Kuraoka

Naoki Matsumoto

Nobuhiko Makino

Hideaki Namba

Eiichi Kamei

A servo control system includes an actuator controlling a controlled quantity. A device detects the controlled quantity and generates a detection signal representative thereof. The actuator is controlled in response to a target value and the detection signal so that the detected controlled quantity can follow the target value. A device generates a signal representative of an input variable relating only to the target value. The target value is corrected in accordance with the input variable through fuzzy reasoning using predetermined rules.

Servo control system

Disclosed a brake control system for stably performing the brake control of a motor vehicle. The brake control system is arranged so as to control a braking pressure applied to a vehicle wheel so that the wheel speed becomes equal to a target wheel speed. The target wheel speed is determined on the basis of a predetermined slip ratio of the wheel and the vehicle speed of the wheel portion. The vehicle speed of the wheel portion is derived as a function of the turning radius determined in the steering amount of the vehicle and the vehicle speed. The brake control system is preferably constructed as an integral-added optimal regulator which controls the braking pressure on the basis of an optimal feedback gain predetermined in accordance with a dynamic model of a system performing the brake of the vehicle.

Brake control system on turning of motor vehicle

An anti-skid control system for a vehicle with at least one wheel. The anti-skid control system includes a wheel sensor for sensing a rotational speed of the wheel and for generating a signal indicative of the sensed wheel speed and a brake sensor for sensing a braking force of a braking device which brakes the wheel and for generating a signal indicative of the sensed braking force. The wheel sensor and the brake sensor are respectively coupled to a control unit for receiving the wheel speed signal and the braking force signal to control the braking force of the braking device to a target braking force so that a slip ratio of the wheel assumes a predetermined value. The control unit determines the target braking force at the time of start of the anti-skid control to be equal to a braking force corresponding to the resultant of torques developed in the wheel at the control start time.

Anti-skid control system for braking of vehicle

Disclosed is a brake control system for a motor vehicle comprising a wheel braking device (M5) for providing the braking of a wheel of the vehicle in accordance with pressure, a braking pressure adjusting device (M6) for adjusting the braking pressure applied to the wheel braking device (M5), a detector (M4) for detecting a rotational state of the wheel, a rotational state setting device (M8) for setting an optimally rotational state of the wheel in according with an operating condition of the vehicle, and a control unit (M9) for feedback-controlling the braking pressure adjusting device (M6) so that the detected rotational state is equal to the set rotational state. The control unit (M9) is constructed as an integral-added optimal regulator which controls the braking pressure adjusting device (M6) on the basis of an optimal feedback gain predetermined in accordance with a dynamic model of a system relating to the brake of the vehicle. The brake control system with such an arrangement makes possible to provide quick response and high stability on the braking operation of the vehicle.

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Toyohashi, Japan

Naoto Ohoka