| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent damage to a motor by immediately getting out of a situation where a movable body has a collision, if any. <P>SOLUTION: This control device for a linear motor is driven by a single-phase inverter 2 and reciprocates pistons 5A, 5B as movable bodies. The control device for linear motor has the collision detection sensor for detecting the collision of the piston 5A, a down counter 25 for changing the magnitude of the output voltage of the inverter 2 at the time of the collision detection by the sensor 8; an adder 26, a counter 27 for changing offset voltage superimposed on the output voltage; a multiplier 28, and an adder 24. At the time of the collision detection, the output voltage is decreased immediately, and the offset voltage is increased, and the output voltage is returned. <P>COPYRIGHT: (C)2004,JPO |
