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The intelligent optimization method for designing fractional order PI/sup /spl lambda//D/sup /spl delta// controller (FOPID) based on genetic algorithms is presented in this paper. Fractional calculus can provide new and good performance extension for FOPID because of the arbitrary order of fractional calculus. However, the difficulties of designing FOPID(More)
An intelligent optimization method for designing fractional order PID (FOPID) controllers based on particle swarm optimization (PSO) is presented in this paper. Fractional calculus can provide novel and higher performance extension for FOPID controllers. However, the difficulties of designing FOPID controllers increase, because FOPID controllers append(More)
A robust two-degree-of-freedom control scheme is proposed for permanent magnet synchronous motor PMSM using extended state observer ESO . The robustness is achieved based on the ESO. Parameter perturbation and external disturbances in PMSM drive system are treated as disturbance variable, and then the motion model of PMSM is transformed into an extended(More)
Tristable energy harvester is applied to harvesting energy from human motion in order to overcome the narrowband issues of linear resonant piezoelectric energy harvester. Based on the characteristics of human motion, time-varying potential energy function of tristable oscillator with respect to the swing angle is established to derive the theoretical model(More)
This paper implements a Particle Swarm Optimization (PSO) speed controller for controlling the speed of DC motor. Also traditional Proportional (P), Proportional-Integral (PI) controller have been developed and simulated using MATLAB/SIMULINK. The simulation results indicate that the PI controller has big overshoot, sensitivity to controller gains. The(More)
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