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Speed Control of Induction Motor Using PID and Fuzzy Controller
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This paper is about speed control of induction motor combining composite control mode in series with one of the soft computing techniques, fuzzy logic. The composite control mode PID controller is designed based on Ziegler-Nichols (Z-N) tuning technique. Fuzzy logic controller (FLC) is connected in series with the PID controller for the effective speed control of widely used induction motors, especially direct field-oriented induction motor (DFOIM). The Z-N PID is adopted because its parameter values can be chosen using a simple and useful rule of thumb. The FLC is connected to the PID controller for enhancing robust performance in both dynamic transient and steady-state periods. The FLC is developed based on the output of the PID controller, and the output of the FLC is the torque command of the DFCIM. Simulation results demonstrate that the proposed Z-N PID+FLC scheme can lead to desirable robust speed tracking performance under load torque disturbances.
Keywords
Composite Control Mode, Fuzzy Controller, PID Controller, Speed Tracking Performance.
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