Numerical controller

Details Numerical controller Numerical controller

2006-12-08

2008-09-16

Ip, Paul (Department: 2837)

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

C318S570000, C318S571000, C318S572000, C318S568220

Reexamination Certificate

active

07425811

ABSTRACT:
When a servomotor (control axis) is coasting and rotating in a servo-off state in which no current is applied to the servomotor, this servo-off state is switched over to a servo-on state in which current is applied to the servomotor, and a position control and a speed control are started. An actual speed in servo-on state is obtained in speed obtaining means by a position/speed detector. Position command means obtains a command movement amount using the actual speed as an initial speed. A position deviation amount corresponding to the actual speed is calculated, a command movement amount, a position deviation amount, and a position deviation amount remaining in a position deviation counter in servo-on state with the sign thereof reversed are added to each other as a command amount to the position deviation counter.

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