PID position regulation in one-degree-of-freedom Euler–Lagrange systems actuated by a PMSM |
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Authors: | J Verastegui-Galván J Orrante-Sakanassi |
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Affiliation: | 1. Facultad de Ingeniería, Universidad Autónoma de Querétaro, Querétaro, Qro., México;2. CONACYT-Tecnologico Nacional de Mexico/Instituto Tecnologico de Hermosillo, Division de Estudios de Posgrado e Investigacion, Hermosillo, Mexico |
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Abstract: | This paper is concerned with position regulation in one-degree-of-freedom Euler–Lagrange Systems. We consider that the mechanical subsystem is actuated by a permanent magnet synchronous motor (PMSM). Our proposal consists of a Proportional-Integral-Derivative (PID) controller for the mechanical subsystem and a slight variation of field oriented control for the PMSM. We take into account the motor electric dynamics during the stability analysis. We present, for the first time, a global asymptotic stability proof for such a control scheme without requiring the mechanical subsystem to naturally possess viscous friction. Finally, as a corollary of our main result we prove global asymptotic stability for output feedback PID regulation of one-degree-of-freedom Euler–Lagrange systems when generated torque is considered as the system input, i.e. when the electric dynamics of PMSM's is not taken into account. |
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Keywords: | One-degree-of-freedom Euler–Lagrange systems permanent magnet synchronous motors PID control Lyapunov stability |
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