| 摘要 |
PURPOSE:To obtain a speed command unit for motor which can select an arbitrary type of acceleration/deceleration ratio including modification of acceleration/deceleration ratio through speed selection and modification of acceleration/deceleration ratio through failure mode. CONSTITUTION:A deceleration ratio is set according to the weight of an input failure mode among zero speed data under a plurality of types of failure modes, and an inclination signal is produced from thus set deceleration ratio in order to bringing a motor from current speed to zero speed and thus produced inclination signal is then fed, as a speed command signal, to a thyristor Leonard unit 7 through a program controller 9. Since an inclination signal having deceleration ratio corresponding to the weight of failure mode among zero speed data under several types of failure modes is set according to a program, a inexpensive unit can be fabricated without increasing the number of components when a plurality of acceleration/deceleration ratio are required. |
