Modeling and Control of Precision Actuators

Modeling and Control of Precision Actuators PDF

Author: Tan Kok Kiong

Publisher: CRC Press

Published: 2018-10-08

Total Pages: 272

ISBN-13: 1351832166

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Modeling and Control of Precision Actuators explores new technologies that can ultimately be applied in a myriad of industries. It covers dynamical analysis of precise actuators and strategies of design for various control applications. The book addresses four main schemes: modeling and control of precise actuators; nonlinear control of precise actuators, including sliding mode control and neural network feedback control; fault detection and fault-tolerant control; and advanced air bearing control. It covers application issues in the modeling and control of precise actuators, providing several interesting case studies for more application-oriented readers. Introduces the driving forces behind precise actuators Describes nonlinear dynamics of precise actuators and their mathematical forms, including hysteresis, creep, friction, and force ripples Presents the control strategies for precise actuators based on Preisach model as well as creep dynamics Develops relay feedback techniques for identifying nonlinearities such as friction and force ripples Discusses a MPC approach based on piecewise affine models which emulate the frictional effects in the precise actuator Covers the concepts of air bearing stages with the corresponding control method Provides a set of schemes suitable for fault detection and accommodation control of mechanical systems Emphasizing design theory and control strategies, the book includes simulation and practical examples for each chapter; covers precise actuators such as piezo motors, coil motors, air bearing motors, and linear motors; discusses integration among different technologies; and includes three case studies in real projects. The book concludes by linking design methods and their applications, emphasizing the key issues involved and how to implement the precision motion control tasks in a practical system. It provides a concise and comprehensive source of the state-of-the-art developments and results for modeling and control of precise actuators.

Modeling and Control of Precision Actuators

Modeling and Control of Precision Actuators PDF

Author: Tan Kok Kiong

Publisher: CRC Press

Published: 2018-10-08

Total Pages: 270

ISBN-13: 1466556455

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Modeling and Control of Precision Actuators explores new technologies that can ultimately be applied in a myriad of industries. It covers dynamical analysis of precise actuators and strategies of design for various control applications. The book addresses four main schemes: modeling and control of precise actuators; nonlinear control of precise actuators, including sliding mode control and neural network feedback control; fault detection and fault-tolerant control; and advanced air bearing control. It covers application issues in the modeling and control of precise actuators, providing several interesting case studies for more application-oriented readers. Introduces the driving forces behind precise actuators Describes nonlinear dynamics of precise actuators and their mathematical forms, including hysteresis, creep, friction, and force ripples Presents the control strategies for precise actuators based on Preisach model as well as creep dynamics Develops relay feedback techniques for identifying nonlinearities such as friction and force ripples Discusses a MPC approach based on piecewise affine models which emulate the frictional effects in the precise actuator Covers the concepts of air bearing stages with the corresponding control method Provides a set of schemes suitable for fault detection and accommodation control of mechanical systems Emphasizing design theory and control strategies, the book includes simulation and practical examples for each chapter; covers precise actuators such as piezo motors, coil motors, air bearing motors, and linear motors; discusses integration among different technologies; and includes three case studies in real projects. The book concludes by linking design methods and their applications, emphasizing the key issues involved and how to implement the precision motion control tasks in a practical system. It provides a concise and comprehensive source of the state-of-the-art developments and results for modeling and control of precise actuators.

Precision Sensors, Actuators and Systems

Precision Sensors, Actuators and Systems PDF

Author: Hornsen Tzou

Publisher: Springer Science & Business Media

Published: 1992-11-30

Total Pages: 490

ISBN-13: 9780792320159

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Research into and development of high-precision systems, microelectromechanical systems, distributed sensors/actuators, smart structural systems, high-precision controls, etc. have drawn much attention in recent years. These new devices and systems will bring about a new technical revolution in modern industries and impact future human life. This book presents a unique overview of these technologies such as silicon based sensors/actuators and control piezoelectric micro sensors/actuators, micro actuation and control, micro sensor applications in robot control, optical fiber sensors/systems, etc. These are four essential subjects emphasized in the book: 1. Survey of the (current) research and development; 2. Fundamental theories and tools; 3. Practical applications. 4. Outlining future research and development.

Design, Modeling and Control of Nanopositioning Systems

Design, Modeling and Control of Nanopositioning Systems PDF

Author: Andrew J. Fleming

Publisher: Springer

Published: 2014-05-15

Total Pages: 418

ISBN-13: 331906617X

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Covering the complete design cycle of nanopositioning systems, this is the first comprehensive text on the topic. The book first introduces concepts associated with nanopositioning stages and outlines their application in such tasks as scanning probe microscopy, nanofabrication, data storage, cell surgery and precision optics. Piezoelectric transducers, employed ubiquitously in nanopositioning applications are then discussed in detail including practical considerations and constraints on transducer response. The reader is then given an overview of the types of nanopositioner before the text turns to the in-depth coverage of mechanical design including flexures, materials, manufacturing techniques, and electronics. This process is illustrated by the example of a high-speed serial-kinematic nanopositioner. Position sensors are then catalogued and described and the text then focuses on control. Several forms of control are treated: shunt control, feedback control, force feedback control and feedforward control (including an appreciation of iterative learning control). Performance issues are given importance as are problems limiting that performance such as hysteresis and noise which arise in the treatment of control and are then given chapter-length attention in their own right. The reader also learns about cost functions and other issues involved in command shaping, charge drives and electrical considerations. All concepts are demonstrated experimentally including by direct application to atomic force microscope imaging. Design, Modeling and Control of Nanopositioning Systems will be of interest to researchers in mechatronics generally and in control applied to atomic force microscopy and other nanopositioning applications. Microscope developers and mechanical designers of nanopositioning devices will find the text essential reading.

Modeling and Precision Control of Systems with Hysteresis

Modeling and Precision Control of Systems with Hysteresis PDF

Author: Lei Liu

Publisher: Butterworth-Heinemann

Published: 2015-11-20

Total Pages: 178

ISBN-13: 0128035676

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Modelling and Precision Control of Systems with Hysteresis covers the piezoelectric and other smart materials that are increasingly employed as actuators in precision engineering, from scanning probe microscopes (SPMs) in life science and nano-manufacturing, to precision active optics in astronomy, including space laser communication, space imaging cameras, and the micro-electro-mechanical systems (MEMS). As smart materials are known for having hysteretic dynamics, it is necessary to overcome issues with a broadband range of frequencies. This book offers both the mathematical tools for modeling the systems and applications, including complete case studies and source code for the experiments to help both academics and researchers in the industry to achieve precision in the control of Smart Actuator systems. Provides a comprehensive identification of typical complex hysteresis Presents control algorithm design for systems with hysteresis Contain numerous real life examples and two complete case studies Source code to examples are provided

Modeling of Piezoelectric Actuators for High Precision Applications [microform]

Modeling of Piezoelectric Actuators for High Precision Applications [microform] PDF

Author: Georgiou, Helen Maria Saoulli

Publisher: Library and Archives Canada = Bibliothèque et Archives Canada

Published: 2005

Total Pages: 294

ISBN-13: 9780494028438

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The electromechanical model and the dynamic electromechanical drift model were applied to an existing design of a piezoelectric driven valveless micropump, where these models can be used as design tools for the physical design of micropumps to give the optimum flow rate or performance for high precision applications, such as biomedical dispensing devices. In addition, the inverse of the electromechanical model was developed and applied to the micropump design, where such a model can be used to obtain a desired input voltage for a prescribed flow rate. This model can be used as the framework to develop controllers for output flow rate and pressure regulation and control, potentially in both open loop and closed loop control. In this thesis first a simple resistor-capacitor (RC) model for PZT is presented. The model is used to assess the suitability of various models used throughout the literature. Piezoelectric actuators offer high stiffness, fast response times, high sensitivity, low wear and tear, and large force output. Unfortunately the electrical properties of lead zirconate titanate (PZT) changes significantly with an applied mechanical load disturbance and PZT suffers from hysteretic behaviour. In addition, piezoelectric actuators drift in open loop control. Therefore, in order to employ PZT actuators in high precision applications for improved regulation and control, and to achieve absolute positioning for long durations, models are required to characterize the behaviour of the material. An experimental test rig is developed and designed for the simultaneous application of an arbitrary input voltage and an arbitrary load to a PZT stack actuator test specimen. The test rig is used to develop and validate an electromechanical model for piezoelectric actuators, which accounts for hysteresis. The model also characterizes the coupled electromechanical effect of the sensing and actuating signals. In addition, a dynamic electromechanical model is developed to characterize the hysteresis and drift behaviour of PZT. The presented model closely captures the absolute output displacement of the PZT actuator to a variety of applied input voltage excitations.

Piezoelectric Actuators

Piezoelectric Actuators PDF

Author: Hu Huang

Publisher: BoD – Books on Demand

Published: 2021-12-08

Total Pages: 186

ISBN-13: 1839688319

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Taking advantage of high resolution, rapid response, and compact structure, piezoelectric actuators are widely employed for achieving precision positioning in both scientific research and industrial application. With the development of science and technology, the requirements for precision positioning are increasing. Accordingly, great efforts have been made to improve the performances of piezoelectric actuators, and significant progress has been achieved. This book discusses some recent achievements and developments of piezoelectric actuators, in terms of piezoelectric material, driving principle, structural design, modeling, and control, as well as applications.

Design, Modeling and Experiments of 3-DOF Electromagnetic Spherical Actuators

Design, Modeling and Experiments of 3-DOF Electromagnetic Spherical Actuators PDF

Author: Liang Yan

Publisher: Springer Science & Business Media

Published: 2011-06-06

Total Pages: 176

ISBN-13: 940071646X

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A spherical actuator is a novel electric device that can achieve 2/3-DOF rotational motions in a single joint with electric power input. It has advantages such as compact structure, low mass/moment of inertia, fast response and non-singularities within the workspace. It has promising applications in robotics, automobile, manufacturing, medicine and aerospace industry. This is the first monograph that introduces the research on spherical actuators systematically. It broadens the scope of actuators from conventional single-axis to multi-axis, which will help both beginners and researchers to enhance their knowledge on electromagnetic actuators. Generic analytic modeling methods for magnetic field and torque output are developed, which can be applied to the development of other electromagnetic actuators. A parametric design methodology that allows fast analysis and design of spherical actuators for various applications is proposed. A novel non-contact high-precision 3-DOF spherical motion sensing methodology is developed and evaluated with experiments, which shows that it can achieve one order of magnitude higher precision than conventional methods. The technologies of nondimensionalization and normalization are introduced into magnetic field analysis the first time, and a benchmark database is established for the reference of other researches on spherical actuators.

Piezoelectric Actuators: Vector Control Method

Piezoelectric Actuators: Vector Control Method PDF

Author: Frederic Giraud

Publisher: Butterworth-Heinemann

Published: 2019-04-18

Total Pages: 212

ISBN-13: 0128141875

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Piezoelectric Actuators: Vector Control Method: Base, Modeling and Mechatronic Design of Ultrasonic Devices guides researchers and engineers through the process of implementing the vector control method (VCM) in their systems. The book presents which measurements can be made, how to visualize a variable as a rotating vector, about the angular position of the rotating reference frame, how to calculate the parameters of the controllers, and how to observe key variables. Additionally, the book focuses on the modeling of PE ultrasonic transducers and investigates the energy conversion process in an ultrasonic transducer. • Presents the fundamentals of the VCM at a basic level for researchers and practitioners who are new to the field. • Simulates several MATLAB and Simulink examples for deeper learning of the subject. • Presents the application to several test cases, with actual measurements obtained on experimental test benches. • Describes practical implementations of the method.

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