Control of systems with deadzones using PD controllers with fuzzy precompensation

A fuzzy logic-based precompensation approach for controlling systems with deadzones is proposed. The control structure consists of a fuzzy logic-based precompensator followed by a conventional proportional derivative (PD) controller. The authors' proposed control scheme shows superior transient and steady-state performance compared to conventional PD and proportional integral derivative (PID) controllers. The scheme is robust to variations in deadzone nonlinearities, as well as the steady-state gain of the plant. The effectiveness of the scheme is illustrated using computer simulation examples.<
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