| 摘要 |
PURPOSE:To permit the efficient car-speed control by eliminating the variation of the actuator driving force caused by the variation of the negative pressure of a negative pressure source by varying the output signal of an arithmetic means, in order to eliminate the influence of the variation of the negative pressure onto the adjusted pressure of the actuator. CONSTITUTION:A reckless-operation detecting circuit 20 is connected to the reset board of a CPU, and a lead switch SW2 for detecting car-speed, clutch switch SW3, stop switch SW4, set switch SW5, resume switch SW6, and a vacuum switch SW7 are connected to an outside interruption input port IRQ and input ports K2, K3, K0, and K1 through interface circuits IF1-IF6 respectively. In constant-speed routine, a release solenoid SL2 is turned ON, and it is judged that SW7 is turned ON or not. When the negative pressure is less than a prescribed value, speed deviation gain is increased. The duty value is calculated on the basis of the obtained speed deviation gain, and a control solenoid SL1 is duty- controlled. |
