| Summary: | 碩士 === 國立中正大學 === 化學工程研究所 === 91 === Reset control has the advantage of reducing overshoot in a linear system without sarcrificing its disturbance-rejection or sensor-noise suppression performance.
The FORE resets the controller output to zero when the error cross zero.We find that the reset control has the following limitations:
(1)the plant should has self-integrating action;
(2)response of load-changing causes oscillating.
We try to use the PID controller to operate the reset action and have better response,
but the plant still can't stand off the limitations.
In order to remove the above-mentioned limitations of reset control,this thesis applied the sampled-data control with function of switching off the integrator reset.
In sampled-data system, the plant can be used without self-integraing, and the function which we set solves the oscillation problem in load-changing.
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