Title:
SEQUENCE CONTROLLER
Document Type and Number:
Japanese Patent JPH02257303
Kind Code:
A
Abstract:
PURPOSE:To speed up processing with simple constitution while maintaining speed resolution by integrating the counted value of an additive/subtractive counting means and the number of command pulses distributed under sequence control respectively and converting their difference into the input signal of a servo amplifier. CONSTITUTION:A direction discrimination means M4 outputs the forward rotation pulse signal and backward rotations pulse signal of a motor M2 and the additive/subtractive counting means M5 performs addition and subtraction respectively. Further, as the sequence control is carried out, a counted value read means M6 reads the counted value of the additive/subtractive counting means M5 and initializes the counted value and an error register M7 operates the difference between the read counted value and the number of command pulses distributed under the sequence control. Then the arithmetic result is converted by a digital/analog converter M9 into an analog value, which is inputted to the servo amplifier M8. Consequently, the servo processing speed can be increased with the simple constitution without speeding up the sequence control.
Inventors:
SENDA MASAKI
Application Number:
JP8040089A
Publication Date:
October 18, 1990
Filing Date:
March 30, 1989
Export Citation:
Assignee:
YAMAZAKI MAZAK CORP
International Classes:
G05B19/05; G05B19/04; G05B19/19; G05D3/12; H02P29/00; (IPC1-7): G05B19/04; G05B19/19; G05D3/12; H02P5/00