WSEAS Transactions on Systems
Print ISSN: 1109-2777, E-ISSN: 2224-2678
Volume 12, 2013
Reduction of Residual Generated by Vibration Actuator Type Motor Step in a Flexible Beam Euller-Bernoulli
Authors: , ,
Abstract: The technique for formatting the input shaping, based on the pole-zero cancellation is used to reduce the residual vibration in a flexible structure. The technique is developed in the discrete time domain and was extended for a step motor actuator where the motor drive commands were modified to act as passive control. The mathematical model is represented by a central body, wings of rigid solar panels and a flexible beam as shown in Figure 1. The methodology of the system analyze was developed as a multi-body problem in the Cartesian plane. The external torque, which acts on the structure, was generated by stepper motor actuators, whose step numbers were variable in order to cause an effect on the structure and minimize the linear structural response on the flexible beam. Two passive control strategies to minimize the vibration of the flexible beam first vibration mode, were investigated. The first strategy allocates a zero on the pole of the system and the second considers uncertainties on the system parameters and two zeros were placed near the pole.