Acta Mechanica Slovaca 2010, 14(1):64-71 | DOI: 10.2478/v10147-011-0008-x
Active Vibration Control of Aluminium Flexible Structure Using Optimal Controller
- Department of Mechanical Engineering, PSG College of Technology, Coimbatore, India
Vibrations of aluminium flexible structure are actively controlled by using piezoelectric actuators. In active vibration control the control device has varying properties for controlling vibrations. In this active control system, the vibrations are sensed by the sensors which are placed at free end of the beam and these sensed signals are given as input to the control system. In turn, out put in the form of voltage is given to the piezoelectric actuator to control the vibrations by an optimal controller. Thus vibrations are controlled actively. In this paper, an optimal controller called Linear Quadratic Regulator has been designed involving minimization of the total energy of the beam along the length of the beam to control the vibrations of aluminium flexible beam. It is concluded that the vibrations due to step excitation are effectively controlled by optimal controller by varying weighting matrices.
Keywords: Flexible structure, active vibration control, optimal controller
Published: March 31, 2010 Show citation
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