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Flexible structures with surface bounded or embedded piezoelectric ceramic patches have received much attention in active vibration control of structures in recent years. The paper studies the Hinfin robust active control strategy of the vibration system for the flexible cantilever beam. The model of the system is built by the application of ANSYS software, and then the vibration model is gained by...
In order to reduce the vibration of smart structures, this paper gets the optimal location of piezoelectric patch by the D-optimal design principle, and then uses a fuzzy logic controller which was designed base on optimal fuzzy rules to control it. The D-optimal design principle is an optimization method which chosen by the maximum determinant of Fisher information matrix criteria. Study on the mode...
Considerable attentions have been devoted recently to active vibration control using intelligent materials as sensors/actuators. This paper presents results on active control schemes for vibration suppression of flexible cantilever beam with bonded piezoelectric sensors and actuators. State equations which the generalized modal coordinates as variables are built. With the piezoelectric elements are...
This paper demonstrates an active vibration control system of flexible structures by using piezoelectric sensors and actuators. A set of vibration control equations, sensing equations and actuating equations are derived through using the modal theory for piezoelectric flexible structures, then the model is converted into the state space form. With recent developments in sensors/actuators technologies,...
In the study of active vibration of piezoelectric smart structures, the piezoelectric materials always show nonlinear characteristic, so this paper uses the fuzzy logic to control the smart structures vibration. The fuzzy IF-THEN rules are established on analysis of the motion traits of cantilever beam. The fuzzy logic controller (FLC) designs on using the displacement and the velocity of the cantilever...
Based on the linear quadratic Gauss (LQG) optimal control method, the paper introduces an effective procedure to suppress the vibration of flexible structures with the sensors/actuators are symmetrically collocated on both sides of the same position on the host structure. The model of a piezoelectric intelligent cantilever beam is built by the application of ANSYS software. The D-optimal design principle...
Piezoelectric materials are finding increasing applications in active vibration control of structures. A widely used modeling technique for piezoelectric flexible structures is the assumed modes method which results in an infinite dimensional model of the composite structure. The paper builds the model of piezoelectric flexible structures and calculates the modal frequency by the application of ANSYS...
The torque ripple is a major problem of switched reluctance motor drive system, which can cause undesirable acoustic noise and vibration. A novel method of torque closed-loop and fuzzy compensation control for the switched reluctance motor drive system based on finite element model is described in this paper. Under a switched reluctance motor drive system simulation environment, the geometry structure,...
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