Automatic tuning apparatus for PID controllers

Details Automatic tuning apparatus for PID controllers Automatic tuning apparatus for PID controllers

1992-09-16

1993-06-29

Ip, Paul

Electricity: motive power systems

Positional servo systems

'reset' systems

318609, 364157, 364158, 364165, 364162, G05B 1136

Patent

active

052237788

ABSTRACT:
An autotuning procedure for a PID-type controller employs a low frequency sine wave as an exciting input and models the controlled system as a second order linear system. The system is tuned to a desired damping ratio by following an overdamped trajectory, in closed loop gain and phase lag space, to the target closed loop gain and phase lag values on a locus of a desired damping ratio as based on that modeling system.

REFERENCES:
patent: 4539633 (1985-09-01), Shigemasa et al.
patent: 4754391 (1988-06-01), Suzuki
patent: 4791548 (1988-12-01), Yoshikawa et al.
patent: 4914365 (1990-04-01), Murakami et al.
patent: 5063335 (1991-11-01), Baechtel et al.
patent: 5124626 (1992-06-01), Thoen
patent: 5153807 (1992-10-01), Saito et al.

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