Title:
FEEDBACK CONTROLLER
Document Type and Number:
Japanese Patent JPH0231201
Kind Code:
A
Abstract:
PURPOSE:To ensure the stable feedback control by detecting a hunting phenomenon due to the disturbance and giving the change and the control to the gain. CONSTITUTION:A hunting deciding means 58 inputs the detection value 30 given from a detecting part 28 for a control subject 24 and an operating signal 18 of a variable gain control part 56 and monitors whether the process gain of the subject 24 is having the continuous vibration changes or not. Thus the means 58 decides the occurrence of a hunting phenomenon and outputs a hunting detection signal 60 showing the deciding result to a gain deciding means 52. The means 52 decides the gain of the part 56 based on the signal 60 so as to suppress the hunting phenomenon of the subject 24 and outputs a gain selection command 62 to a gain selecting means 48. The means 48 reads the corresponding gain memory value 46 out of a gain memory means 44 based on the command 62 and outputs the value 46 to the means 52 as the gain selection value 50. The means 52 outputs the value 50 to the part 56 as a designated gain 54. The part 56 updates the received gain to a new gain 54 and applies an operation to the control deviation 14 to outputs the signal 18 to an operating part 20.
Inventors:
TERADA TAKAO
Application Number:
JP18030088A
Publication Date:
February 01, 1990
Filing Date:
July 21, 1988
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
International Classes:
G05B5/01; G05B11/36; G05B13/02; (IPC1-7): G05B5/01; G05B11/36
Attorney, Agent or Firm:
Haruo Hamada
Next Patent: JPH0231202