Optimal tuning rules for proportional-integral-derivative and fractional-order proportional-integral-derivative controllers for integral and unstable processes
A set of tuning rules for standard (integer-order) proportional-integral- derivative (PID) and fractional-order PID controllers for integral and unstable processes is presented in this study. Based on a simple model of the process, the tuning rules have been devised in order to minimise the integrat...
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| Format: | Journal Article |
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The Institution of Engineering and Technology
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/52260 |
| Summary: | A set of tuning rules for standard (integer-order) proportional-integral- derivative (PID) and fractional-order PID controllers for integral and unstable processes is presented in this study. Based on a simple model of the process, the tuning rules have been devised in order to minimise the integrated absolute error. Both set-point tracking and load disturbance rejection tasks are considered. The achieved performance indexes can also be used for the assessment of the controller performance. A remarkable feature of the optimisation procedure employed for integral processes is highlighted. The provided results allow the user to quantify, for a given process, the performance improvement that can be obtained by using the fractional controller instead of the integer one. © 2012 The Institution of Engineering and Technology. |
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