Topic
Piezoelectric sensor
About: Piezoelectric sensor is a research topic. Over the lifetime, 7127 publications have been published within this topic receiving 115903 citations.
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TL;DR: In this article, the authors present a study on vibration control of a cylindrical shell using distributed piezoelectric sensors and actuators which are parts of the shell wall.
Abstract: This paper presents a study on vibration control of a cylindrical shell using distributed piezoelectric sensors and actuators which are parts of the shell wall. Modal expansion method is used in establishment of the state equation of the system. The robust control including JO. control theory and A-synthesis method are applied to the design of the controller which satisfies given control performance and robust stability. Simulation and experiment are carried out when the shell is excited at the resonance frequency of a controlled mode. The results show good agreement between simulation and experiment, as well as the effectiveness of the method using distributed sensors and actuators, and qK0. control theory and t-synthesis method.
70 citations
TL;DR: In this article, stress and electrical field distributions in a piezoelectric half-plane under contact load at the surface are considered and the solution for a concentrated force and charge acting on the boundary of the half-space, the Green function, is obtained in a neat form.
70 citations
Patent•
08 Feb 1989
TL;DR: In this article, a thin piezoelectric sensor is used to measure the length, tensile load, stress, or other tensile weight dependent characteristic of a load bearing member.
Abstract: A method of measuring the load in a member subjected to longitudinal stress, a load measuring device and a fastener tightening device using the method of measuring, a load indicating member and a load indicating fastener for use in conjunction with the method of measuring, a method of making the load indicating fastener, a method of tightening the load indicating fastener and a transducer for instrumenting a load bearing member are each disclosed and claimed. A thin piezoelectric sensor consisting of a piezoelectric film sandwiched between two thin electrodes is permanently mechanically and acoustically coupled to the upper surface of a member and is used to determine the length, tensile load, stress, or other tensile load dependent characteristic of the member by ultrasonic techniques.
70 citations
TL;DR: In this article, a cylindrical shell equipped with piezoelectric sensors and actuators was used for active vibration control and the results showed that the actuator and sensor equations can be reduced to modal forms considering the modes of interest.
70 citations
TL;DR: In this paper, the theory used in a system that identifies foreign body impact on a composite plate using built-in strain sensors is summarized, and the identification system consists of a model of the composite plate and an identification algorithm.
Abstract: This paper summarizes the theory used in a system that identifies foreign body impact on a composite plate using built-in strain sensors. The identification system consists of a model of the composite plate and an identification algorithm. The algorithm compares the measured response of the plate to the model response and estimates the impact location and force time history. The solution, which uses a smoother/filter optimization, includes a new computational algorithm that saves considerable computation time for systems with many degrees of freedom.
70 citations