Title:
DISCRETE TIME CONTROLLER
Document Type and Number:
Japanese Patent JPS6429906
Kind Code:
A
Abstract:
PURPOSE:To perform control by a consecutive operating quantity after the convergence of the parameter of the consecutive operating quantity even when it arrives at a stationary state, by providing a switching means between a discrete time type adaptive ON/OFF control means and a consecutive operating quantity sampling control means. CONSTITUTION:The titled device is equipped with a control function switching mechanism 5, an ASC function block (discrete time type adaptive ON/OFF control means) 6, a minimum dispersion control block 7, and a PID control block (consecutive operating quantity sampling control means) 8. The control function switching mechanism 5 discriminates a transient state, the stationary state, and the convergent state of a PID parameter based on a preset value and a control quantity obtained from a measuring part 4, and operates the ASC function block 6, the minimum dispersion control block 7, and the PID control block 8 selectively. And the control of the stationary state is performed by minimum dispersion control unit the parameter is stabilized, and after the stabilization of the parameter, the control is switched to the sampling control of the consecutive operating quantity. In such a way, it is possible to perform the control by the consecutive operating quantity by using the parameter in the stable sampling control of the consecutive operating quantity even when it arrives at the stationary state.
Inventors:
YOSHIKAWA NORIO
Application Number:
JP18640687A
Publication Date:
January 31, 1989
Filing Date:
July 24, 1987
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO
International Classes:
G05B13/04; G05B17/02; G05B21/02; (IPC1-7): G05B13/04; G05B17/02; G05B21/02
Attorney, Agent or Firm:
Yoshiki Okamoto