Electromechanical Sensors and Actuators
By: by Ilene J. Busch-Vishniac
Series: Mechanical Engineering Series; Mechanical Engineering Series
Publisher: Springer New York
Published: 1999
Place of publication: New York, NY
Language: eng
Format: [electronic resource] /
Number of pages: 343
ISBN-13: 9781461271420; 9781461214342
Subjects: Acoustics; Physics
Description: To control mechanical processes one needs to obtain information about the state of the system, to process the information, and then to act on the results. Originally, the simplest controls were purely mechanical feedback systems; more complex systems required human intervention. At present, most controls are provided by purely electromechanical systems, but there are also many situations in which one needs sophisticated measurements for later analysis. Developments in electronic information processing have over the past few decades far outpaced the developments in the sensors and actuators that provide the input and output of the control systems; as a result, the transducers account for the major part of the expense, mass, and failure points of many modern machines. Improvements in control systems thus depend on a clear and thorough understanding of the principles of transducers. It is the aim of this book to help meet that need. Unlike other treatments of sensors or actuators, this book approaches the devices from the point of view of the fundamental coupling mechanism between the electrical and mechanical behavior. Thus, for example, a solenoid can b used either to detect horizontal motion and position (i.e. as a sensor), or to impose a motion on a piston (i.e. as an actuator); the principles of operation of the solenoid are the same in both cases, and this book thus treats them together. The book begins with a discussion of systems analysis as a tool for modeling transducers. It then turns to a detailed discussion of transduction mechanisms (electric and magnetic fields, piezo- and pyro -electric effects, electromagnetic induction, and so forth). The book concludes with an input/output analysis of transducers.
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Table of contents: title: Part I: Basic Tools for Transducer Modeling: Introduction; title: System Models; title: Part II: Transduction Mechanisms: Transduction Based on Changes in the Energy Stored in an Electric Field; title: Transduction Based on Changes in the Energy Stored in a Magnetic Field; title: Piezoelectricity and Pyroelectricity; title: Linear Inductive Transduction Mechanisms; title: Transduction Based on Changes in the Energy Dissipated; title: Optomechanical Sensors; title: Part III: Analysis of Transducers: 2-port Theory; title: Response Characteristics; title: Practical Considerations.