| 摘要 |
PURPOSE:To facilitate a fine position adjustment during manual control over a servomechanism by moving an object at a high speed before an assigned position and then by changing over a control circuit to perform automatic control at a low speed. CONSTITUTION:Change-over switch 4 is placed at manual side (b) and push button PB2 is operated, so that motor M will move a machine forth at a high speed. When the machine moves slightly before an assigned position, motor M is stopped with button PB2 released, and then high-speed analog memory 8 stores voltage e1 that corresponds to the stop position. With push button PB1 opened, variable resistance 13 fine position adjustment is adjusted, and consequently an adjusted voltage is added to the stored voltage of memory 8 to develop voltage e5. This voltage is inputted to differential amplifier 1 to move the machine at a low speed through motor M until e1=e5. Thus, the fine adjustment is facilitated. |
