| 摘要 |
PURPOSE:To decrease the acceleration exerted to a reader and to assure the stability of a car at the automatic start, by temporarily reducing a deviation of a control system at the automatic start and gradually increasing it again into a true deviation. CONSTITUTION:When outputs Va and Vb of operation circuis 55 and 65 exceed true deviations Va and Vb under the conditions as expressed in equations at a time t1 during the control, comparison circuits 56 and 66 changeover switches 52, 53, 62 and 63 from contact (a) to (b). The substantial deviation signals Va and Vb are inputted to comparison circuits 31 and 32 in place of the signals Va and Vb through the switches 53 and 63. Further, the comparison circuits 31 and 32 output pulse signals Pa3, Pa4-, Pb3, Pb4- sequentially while Va>VT and Vb>VT, and a reader is sequentially position-controlled in accordance with said pulse signals. |
