| 摘要 |
PURPOSE:To improve the control precision by effectively utilizing the electrical variation phenomenon which is generated through the lapse of time by the intermittent slide contact between a plurality of commutator piexes and each brush during the revoltion of the dc motor of an actuator, in the selecting control for selecting dampers by the actuator. CONSTITUTION:An actuator 2 is constituted of a dc electric motor 2a revolved in the intermittent slide contact state between a plurality of commutator pieces and each brush in the voltage application from a power source 3 and a reduction gear mechanism 2b. The electric motor 2a is controlled through a voltage applying means 6 by a control signal generating means 5 which generates a control signal when the deviation between the aimed shift data supplied from a data determining means 4 and the actual shift data of a damper 1 becomes over a prescribed value. A detecting means 7 for detecting the above-described intermittent slide contact is installed, and the first and second judgement signals are generated from the judging means 7a according to the magnitude of the time interval between the detection signal of the detecting means 7 and the succeeding detection signal, and a data correcting means 8 and an actual shift setting means 9 are controlled according to the result of the judgement. |
