MSC-RS Design Algorithm of PIDF Controller using SOPDT Model
Keywords:
PID Controller, SOPDT Model, AMIGO, Routh Stability, Multi-Scale ControlAbstract
For many decades the process industry has relied on PID control to boost plant performance and safety despite the availability of several advanced control techniques. Crucial to realising the benefits of PID control is finding the tuning values, which is challenging because a plant usually requires many control loops. Poor PID control tuning often becomes one of the reasons why a process plant performs below expectations. Many PID tuning rules are available, some of which have become well-accepted in the industry. The current paper presents a new tuning rule for designing a PID controller augmented with a filter based on combining the multi-scale control scheme and Routh stability criteria (MSC-RS design algorithm). Applying the algorithm to the Coal Mill temperature control demonstrates the effectiveness of the new rule compared to some of the well-known PID tuning methods adopted in the industry.
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