Title:
FEEDBACK CONTROLLER
Document Type and Number:
Japanese Patent JPS5985506
Kind Code:
A
Abstract:
PURPOSE:To prevent the runaway of a robot arm, etc. and to improve the safety by setting a time point adversely proportional to the deviation value to a timer and monitoring the feedback of a feedback signal based on said set time. CONSTITUTION:The drive and stop of a motor 2 are controlled by a control part 4 consisting of a microcomputer circuit. A timer 6 is connected to the part 4 to monitor the feedback of a feedback signal (f) sent from an encoder 3. The part 4 calculates a time T adversely proportional to the deviation and sets it to the timer 6. The timer 6 is reset by the signal (f) sent from the encoder 3 after starting with transmission of a deviation command (u). If the time is up with no reset input, a fault detection signal (i) is delivered to the part 4. The part 4 decides a fault of the encoder 3 when an interruption of the signal (i) is applied and then stops the drive of the motor 2.
Inventors:
TSUKABE TOMOYUKI
Application Number:
JP19480882A
Publication Date:
May 17, 1984
Filing Date:
November 06, 1982
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO
International Classes:
G05B23/02; G05B9/02; (IPC1-7): G05B23/02
Attorney, Agent or Firm:
Suzuki Yoshimitsu