The Effect of Artificially Reducing the Size of Inductors in Piezoelectric Shunt Damping Circuits
نویسندگان
چکیده
Connecting a passive electrical network to a structurally attached piezoelectric transducer is referred to as passive shunt damping. Current shunt circuit designs, e.g. a single mode L¡R network, typically require large inductance values of up to thousands of Henries. In practice, discrete inductors are limited in size to around 1 H: By placing an additional capacitance across the terminals of the piezoelectric transducer, shunt circuit inductance values can be greatly reduced. To justify our claims, we present a theoretical analysis of the damped system and identify the in°uence of the additional capacitance. Two modes of a simply supported beam are successfully damped using a capacitance modi ̄ed shunt circuit.
منابع مشابه
A new multi-switch circuit with adaptive capacitance for semi-active piezoelectric shunt damping
Piezoelectric-based shunt dampers are developed in recent years because of simplicity in comparison with other methods. In these methods, a part of converted mechanical energy is stored in the internal el...
متن کاملReducing the inductance requirements of piezoelectric shunt damping systems
Structural vibration can be reduced by shunting an attached piezoelectric transducer (PZT) with an electrical impedance. Current shunt circuit designs, e.g. a single-mode inductor–resistor network, typically require large inductance values of up to thousands of henries. In practice, discrete inductors are limited in size to around 1 H. By placing an additional capacitance across the terminals o...
متن کاملMultimodal Vibration Damping through Piezoelectric Patches and Optimal Resonant Shunt Circuits
Piezoelectric elements connected to shunt circuits and bonded to a mechanical structure form a dissipation device that can be designed to add damping to the mechanical system. Due to the piezoelectric effect, part of the vibration energy is transformed into electrical energy that can be conveniently dissipated. Therefore, by using appropriate electrical circuits, it is possible to dissipate str...
متن کاملAn Autonomous Piezoelectric Shunt Damping System
Passive shunt damping involves the connection of an electrical shunt network to a structurally attached piezoelectric transducer. In recent years, a large body of research has focused on the design and implementation of shunt circuits capable of significantly reducing structural vibration. This paper introduces an efficient, light weight, and small-in-size technique for implementing piezoelectr...
متن کاملOptimization and Implementation of Multimode Piezoelectric Shunt Damping Systems
Piezoelectric transducer (PZT) patches can be attached to a structure in order to reduce vibration. The PZT patches essentially convert vibrational mechanical energy into electrical energy. The electrical energy can be dissipated via an electrical impedance. Currently, impedance designs require experimental tuning of resistive circuit elements to provide optimal performance. A systematic method...
متن کامل