| 摘要 |
PURPOSE:To improve stability, by carrying out simultaneously a control which decreases the deflection of a car speed sharply and a control which makes the deflection of a car speed zero slowly, varying radically two integral elements in case that the acceleration of a car speed exceeds a prescribed value, and holding down the deflection of a car speed. CONSTITUTION:A control value is on-off controlled by an output duty D which is obtained from the control line of a prescribed incline, and a real traveling car speed Vn is approached to a stored target car speed VM. In the above apparatus, when G is designated for the incline of a control line, DELTAV for the deflection of a car speed, DM and SD1 for integral elements which respond to the change of the duty quickly and slowly, and (n) for a constant, a set duty SD corresponding to the target car speed VM is calculated by a formula SD=SD1+(DM-SD1)/n, and the output duty D is calculated by a formula D=GXDELTAV+SD. And when the acceleration of car speed DELTAVn exceeds a certain value, the DM and the SD1 are sharply varied at formulae DM DM-A.DELTAVn and SD1 SD1-B.DELTAVn.
|
