Discrete integral variable structure model following control for induction motor drivers

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Discrete integral variable structure model following control for induction motor drivers

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A DSP microprocessor based high performance vector-controlled induction motor driver is presented. The discrete-time integral variable structure model following the control (DIVSMFC) approach is proposed for the outer loop of the driven system. A design procedure is developed for determining the control function, the switching plane and the integral control gain such that the error between the state of the model and the controlled plant is minimised. Simulation and experimental results show that the proposed scheme can achieve accurate position/velocity servo-tracking in the presence of load disturbances and plant parameter variations.

Inspec keywords: power engineering computing; digital signal processing chips; position control; velocity control; discrete time systems; induction motor drives; model reference adaptive control systems; machine control; variable structure systems

Other keywords: plant parameter variations; load disturbances; induction motor drivers; discrete-time integral variable structure model; switching plane; DSP microprocessor; position/velocity servo-tracking; integral control gain; discrete integral variable structure model following control

Subjects: Power engineering computing; Velocity, acceleration and rotation control; Control of electric power systems; Spatial variables control; Asynchronous machines; Multivariable control systems; Digital signal processing chips; Control engineering computing; Drives; Self-adjusting control systems; Discrete control systems

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