J Chen, E Prempain and Q H Wu. Observer-Based Nonlinear Control of A Torque Motor with Perturbation Estimation. International Journal of Automation and Computing, vol. 3, no. 1, pp. 84-90, 2006. DOI: 10.1007/s11633-006-0084-y
Citation: J Chen, E Prempain and Q H Wu. Observer-Based Nonlinear Control of A Torque Motor with Perturbation Estimation. International Journal of Automation and Computing, vol. 3, no. 1, pp. 84-90, 2006. DOI: 10.1007/s11633-006-0084-y

Observer-Based Nonlinear Control of A Torque Motor with Perturbation Estimation

  • This paper presents an observer-based nonlinear control method that was developed and implemented to provide accurate tracking control of a limited angle torque motor following a 50Hz reference waveform. The method is based on a robust nonlinear observer, which is used to estimate system states and perturbations and then employ input-output feedback linearization to compensate for the system nonlinearities and uncertainties. The estimation of system states and perturbations allows input-output linearization of the nonlinear system without an accurate mathematical model of nominal plant. The simulation results show that the observer-based nonlinear control method is superior in comparison with the conventional model-based state feedback linearizing controller.
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