Computer aided tuning of turbine controls

Details Computer aided tuning of turbine controls Computer aided tuning of turbine controls

1988-07-25

1989-09-19

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Process of power production or system operation

60657, 60660, 1374875, F01K 1302

Patent

active

048669407

ABSTRACT:
A method for automatically calibrating a controller for a valve controlled system follows consistent procedures to make precise adjustments to valve characteristics. The controller is placed in a calibration mode, then the valve settings are modified over a full range of operation. At predetermined levels of operation, the valve settings are maintained at preset values while system performance is measured. After the full range of valve operation has been covered, adjustments are made to the correspondence between the valve settings and the levels of operation in dependence upon the differences between the measured system performance and the predetermined levels of operation. This procedure is repeated to provide average values and also to make changes to valve characteristic curves corresponding to different modes of operation such as single valve and sequential valve modes. Other control parameters may be adjusted by evaluating system performance during normal operation.

REFERENCES:
patent: 4246491 (1981-01-01), Waldron et al.
patent: 4603394 (1986-07-01), Bukowski et al.
patent: 4811565 (1989-03-01), Hwang
Process Plus Brochures with a cover letter of 2/1988.
"Use an IBM PC Simulator to Troubleshoot and Analyze Industrial Process Control Loops" by John P. Gerry, P.E., presented at Control Expo 87.

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