access icon free Tuning of symmetric send-on-delta proportional–integral controllers

The tuning of the parameters of two types of event-based proportional–integral (PI) controllers based on symmetric send-on-delta (deadband) sampling is investigated in this study. In particular, well-known tuning rules devised for standard (continuous-time) PI controllers are compared with tuning rules properly devised for these event-based controllers in order to minimise the step response settling time. Simulations and experiments show that a satisfactory performance, namely, a performance similar to the corresponding time-driven controller, is achieved by all the tuning rules considered because of the structure of the event-based PI controller, thus making it very suitable for its use in the industry.

Inspec keywords: step response; controllers; continuous time systems; PI control; simulation

Other keywords: symmetric send-on-delta sampling; step response settling time minimisation; symmetric send-on-delta proportional-integral controller tuning; continuous-time PI controller; time-driven controller; standard PI controller; deadband sampling; event-based proportional-integral controller

Subjects: Control system analysis and synthesis methods; Simulation, modelling and identification

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