A New Control Scheme for Integrating Processes with Inverse Response and Time Delay
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Medarametla Praveen Kumar
und
M Manimozhi
Abstract
This paper presents a novel technique in designing controller for integrating process with inverse response and time delay. Using Pade’s approximation, the positive zero is approximated to a negative zero by modifying the time delay of process. The polynomial approach is employed for the rearranged process to derive the controller parameters. The tuning parameter is selected based on the value of maximum sensitivity. Set point filtering is employed to reduce the overshoot in servo response. Various bench marking examples are considered to evaluate the proposed method. The evaluation is carried out in terms of various performances.
Nomenclature:
Process gain
- τ
Time constant of the process
Time delay of the process
- z
Inverse of process zero
- ϕ
Time delay of the modified process
Proportional gain of PID
Integral gain of PID
Derivative gain of PID
PID filter parameters
- λ
Tuning parameter
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- A New Control Scheme for Integrating Processes with Inverse Response and Time Delay
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- Fractional PID Controller Applied to a Chemical Plant with Level and pH Control
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