| 摘要 |
PURPOSE:To obtain the high accuracy of position determination with a simple constitution by making it possible to carry out reversible operation through two Triacs as well as by operating sequentially with the preset mode. CONSTITUTION:The controller CON, based on the reference voltage and the output of the comparator COM puts out the forward acceleration signals, forward decelerating signals, reverse acceleration signals and reverse decelerating signals to the forward gate driving circuit R.G and the reverse gate driving circuit L.G respectively. From said driving circuit R.G and L.G the gate signals are impressed on the Triac TR1 and TR2, whereby the motor 1 is run forwardly and reversly. Through said action the motor1 is charged to the high-speed, medium-speed and low-speed by turns to make position determination. |
