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Patent Searching and Data


Title:
MOTOR CONTROLLER
Document Type and Number:
Japanese Patent JPH07241093
Kind Code:
A
Abstract:

PURPOSE: To prevent application of significant impact or vibration to a load when the operation of a motor is switched from speed control mode to position control mode.

CONSTITUTION: Under speed control mode, the speed of a synchronous motor 1 is controlled by comparing a speed command signal SC from a main control circuit 3 with a speed feedback signal SFB from means 14 for detecting the speed of the synchronous motor 1. Under position control mode, the position of the synchronous motor 1 is controlled by comparing a position command signal PC from the main control circuit 3 with a position feedback signal PFB from means 16 for detecting the position of the rotor of synchronous motor 1. At the time of switching from speed control mode to position control mode, a correction means 22 converts the speed feedback signal SFB into a position command correction signal PCA which is then added to the position command signal, PC.


Inventors:
KONNO SHUJI
Application Number:
JP2857794A
Publication Date:
September 12, 1995
Filing Date:
February 25, 1994
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
G05D3/12; H02P21/05; H02P23/04; H02P23/16; H02P23/18; H02P25/022; H02P25/026; H02P25/098; H02P27/06; H02P29/00; H02P29/20; (IPC1-7): H02P5/00; G05D3/12; H02P5/41
Attorney, Agent or Firm:
Noriyuki Noriyuki