| Summary: | 碩士 === 國立臺北科技大學 === 電機工程系研究所 === 99 === It is difficult to control Pressure control system which has a high degree of nonlinearity. The early use of PID controller must rely on a systematic and comprehensive mathematical model for the design. Moreover, the trading system parameters change with changes in the environment, making the mathematical model not easy to derive, therefore, the controller design process is quite difficult. The purpose of this paper presented the design of Taguchi method of optimum PID controller parameters used in the pressure control system, instead of complex mathematical models of the past, or trial and error method (Try And Error).
In this thesis, the traditional PID control theory, combined with the Taguchi method, select PID parameters for the control factor, the error criteria (IAE) for the Taguchi objective function, to create orthogonal array to find PID of at least the experimental group number, then PIC microprocessor with the VB interface and stored as a measurement of pressure response of the platform, calculated signal to noise ratio(S/N), get a response chart, response table，and finally find the optimal PID parameters.
Then verified the results obtained by the error criteria compared with the target value for the minimum value, the range of 95% confidence interval. So Taguchi used in pressure control systems, get the best combination of PID parameters, and better system performance.
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