Control system for reciprocating linear motion or intermittent motion devices

A control system for a reciprocating linear motion or intermittent motion device comprising:

• a servomotor for driving an operation member of the device,
• means for setting an amount of stroke for the operation member,
• means for setting a period of stroke time for the operation member,
• memory means for storing therein in the order of addresses items of velocity data at stroke positions at a specified spacing, the items of velocity data being obtained from a predetermined operation member velocity diagram,
• pulse generator means for generating a pulse signal having a period equal to a velocity data reading interval determined by the stroke time set by the stroke time setting means and the number of velocity data items stored in the memory means,
• means for counting the number of pulses produced by the pulse generating means,
• means for reading the velocity data from the address in the memory means corresponding to a nenewed count obtained by the counting means every time the count is renewed,
• means for converting the read velocity data to a signal corresponding to a velocity obtained by multiplying the velocity data by a ccefficient determined by the amount of stroke set by the stroke amount setting means, the stroke time set by the stroke time setting means and all items of velocity data stored in the memory means, and
• means for controlling the speed of the servomotor according to the output signal of the converting means.