New Tuning Formulas for Two-Degree of Freedom PID Controllers and the Application to Level Control Systems

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概要

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• This paper presents novel tuning formulas for two-degree of freedom PID-family controllers. The structure of the proposed control system consists of a plant or process to be controlled, P or PI or PID controllers and a pre-filter. The tuning formulas are derived based on the CDM design method by solving CDM algebraic equations obtained from the known controllers structures and the approximated plant model based on the experimental test. The proposed formulas are summarized in the tuning table and can be used easily. To apply the tuning rules, the plant or process is firstly tested to find the values of critical gain and critical period experimentally in the same manner as Ziegler-Nichols second method. The parameters of P, PI or PID controller and the associated pre-filter are then obtained by substituting those values in the formulas. The experiments in controlling the level process with long pipeline controlled by the controllers tuned by the proposed rules and the well-known Ziegler-Nichols formulas are conducted and compared. The proposed control systems result in responses with shorter settling time and considerably smaller or no overshoot. Overall, the proposed formulas are well applicable despite their simplicity.

• 2007-05-01

著者

• Komine Noriyuki

  School of Engineering, Tokai University

• Komine N

  School Of Information Science And Technology Tokai University

• Ochiai Y

  School Of Information Science And Technology Tokai University

• Ngamwiwit J

  Department Of Control Engineering Faculty Of Engineering And Research Center Of Communications And I

• Ngamwiwit Jongkol

  Department Of Control Engineering Faculty Of Engineering And Research Center Of Communications And I

• BENJANARASUTH Taworn

  Department of Control Engineering, Faculty of Engineering and Research Center of Communications and

• OCHIAI Yasuzumi

  School of Information Science and Technology, Tokai University

• Benjanarasuth Taworn

  Department Of Control Engineering Faculty Of Engineering And Research Center Of Communications And I

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• New Tuning Formulas for Two-Degree of Freedom PID Controllers and the Application to Level Control Systems
• CDM Based Two-Degree of Freedom PID Controllers Tuning Formulas(SCHOOL OF INFORMATION TECHNOLOGY AND ELECTRONICS)
• FFC (Feedforward Controller) Incorporating Industrial Controller Designed by CDM (Coefficient Diagram Method) for Level Processes (SCHOOL OF INFORMATION TECHNOLOGY AND ELECTRONICS)
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