Active Vibration Control of Structures using an Impedance Matching Control Technique

Kumar, Senthil P and Rajnish, G and Savitha, C. M and Paul, Subin and Kamath, GM (2005) Active Vibration Control of Structures using an Impedance Matching Control Technique. In: International Conference on Smart Materials Structures and Systems, 28-30 July 2005, Bangalore.

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Active vibration control of structures has gained a lot of interest in recent years. This paper presents an active vibration control methodology of a structure using piezoelectric actuators. The proposed methodology is useful in practical applications where the system to be controlled is difficult to model due to the presence of complex boundary conditions. The impedance matching control technique uses a power flow approach wherein the controller is designed such that the power flow into the structure is minimized. The system transfer function is obtained from the experimental collocated actuator/sensor pair data using Eigen Realisation Algorithm (ERA). The controller is designed for the system transfer function according to impedance matching theory. The above approach is targeted towards the vibration control of wind tunnel stings, which suffer from flow-induced vibration. A wind tunnel sting model is designed and fabricated for this study. The real time implementation of the impedance matching controller has been carried out using dSPACE® Digital Signal Processor (DSP) card. The results are encouraging and demonstrate the feasibility of applying this technique in the wind tunnel

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: vibration control;impedance method;de-reverberated transfer function;piezostack actuator;digital signal processor;collocated sensor/actuator
Subjects: ENGINEERING > Electronics and Electrical Engineering
ENGINEERING > Mechanical Engineering
Depositing User: Mr Nisanth
Date Deposited: 25 Jul 2011 04:50
Last Modified: 25 Jul 2011 04:50

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