SUPPRESSION OF LOAD OSCILLATIONS IN PRECISION SERVOMECHANISMS SENSING ONLY MOTOR POSITION
Gianni Ferretti* GianAntonio Magnani* Paolo Rocco*
* Dipartimento di Elettronica e Informazione, Politecnico di Milano, Piazza L. da Vinci 32, Milano, 20133, Italy, E-mail {ferretti,magnani,rocco}@elet.polimi.it
An analysis of the two-mass model of a servomechanism is first presented in this paper. The analysis stands as a basis for the design of a P/PI controller where suppression of load oscillations, rather than fast setpoint tracking of the motor position is pursued. Further improvements of the load behavior can be achieved by a notch filter placed outside the velocity loop. Simulation results are given to assess the effectiveness of the proposed approach.
Keywords: Servo mechanisms, Elastic joint, PID control, Notch filter
Session slot T-Tu-A21: Posters of Manufacturing and Instrumentation/Area code 1g : Mechatronics Systems

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