| 摘要 |
<p>PURPOSE:To prevent deterioration in responsibility due to the difference of an actual vehicle speed and the generation of an overshoot of the vehicle speed by varying the arithmetic contents of a control signal according to an actual vehicle speed level at the point of time when a control signal receives an operation instruction signal. CONSTITUTION:The control circuit 16 constituted as a microcomputer which includes a one-chip CPU, an oscillator, etc., inputs a vehicle speed signal Sa, cancel signal Sb, power-on signal Sc, set signal Sd, and resume signal Se, and outputs a duty ratio control signal Sf and a time control signal Sg for controlling a control valve 6 by arithmetics based upon the input data, a previously stored program, etc., and also outputs a opening instruction signal Sh and a closing instruction signal Si for controlling a release valve 7 respectively. Consequently, deterioration in responsibility due to the difference of the actual vehicle speed and the generation of an overshoot of the vehicle speed are prevented.</p> |
