Journal
NONLINEAR DYNAMICS
Volume 72, Issue 1-2, Pages 49-59Publisher
SPRINGER
DOI: 10.1007/s11071-012-0689-3
Keywords
Induction motor; Speed tracking; Nonlinear control; State error; Hamiltonian systems; Energy-shaping
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Funding
- Natural Science Foundation of China [61174131, 61104076]
- Natural Science Foundation of Shandong Province [ZR2009GM034, ZR2011FQ012]
- Science & Technology Project of College and University in Shandong Province [J11LG04]
- Shandong Province Excellent Young Teacher Domestic Visiting Scholar Project
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A novel nonlinear control scheme of induction motor (IM) is presented based on state error port-controlled Hamiltonian (PCH) systems and energy-shaping (ES) principle. The PCH model of IM system is established. Using interconnection assignment and damping injection method, the desired state error PCH structure is assigned to the closed-loop IM system by the ES principle. The controllers are designed when the load torque is known and unknown, respectively. A load torque estimator is developed in the presence of the load torque disturbance. Moreover, an observer is proposed to estimate the unknown load torque. The stability of the closed-loop system is also verified. Finally, speed regulation of the IM drive system is implemented based on space vector pulse-width modulation technology. The simulation results show that the system has good load disturbance attenuation and speed tracking performances.
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