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Author: Lei Liu Publisher: Butterworth-Heinemann ISBN: 0128035676 Category : Computers Languages : en Pages : 186
Book Description
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
Author: Lei Liu Publisher: Butterworth-Heinemann ISBN: 0128035676 Category : Computers Languages : en Pages : 186
Book Description
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
Author: Tan Kok Kiong Publisher: CRC Press ISBN: 1351832166 Category : Science Languages : en Pages : 272
Book Description
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.
Author: Andrew J. Fleming Publisher: Springer ISBN: 331906617X Category : Technology & Engineering Languages : en Pages : 418
Book Description
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.
Author: Lei Liu Publisher: LAP Lambert Academic Publishing ISBN: 9783659592119 Category : Languages : en Pages : 172
Book Description
Piezoelectric systems are widely employed in precision engineering and the capability for precision tracking at broadband frequencies is increasingly appealing. However, the performance of dynamic tracking is limited over a wide range of frequencies, because of the coupled hysteresis, creep, and vibration dynamics. This book thus presents the modeling and control of piezoelectric systems over a broad range of frequencies. The mathematical and physical modeling are proposed as well as the model-based feedforward and several feedback approaches. This book is suitable for graduates and researchers in precision engineering, especially interested in high-speed and precision motion of instruments.
Author: Yufeng Wang Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Hysteresis widely exists in smart materials such as shape memory alloys (SMAs), piezoelectrics, magnetorheological (MR) fluids, electrorheological (ER) fluids and so on. It severely affects the applicability of such materials in actuators and sensors. In this thesis, problems of modeling and control of systems with hysteresic SMAs actuators are studied. The approaches are also applicable to control of a wide class of smart actuators. Hysteresis exhibited by SMAs actuators is rate-independent when the input frequency is low, and can be modeled by a classical Preisach model or a KP model. The classical Preisach hysteresis model is a foundation of other hysteresis models. In this thesis, traditional methods are explained in advance to identify and implement the classical Preisach model. Due to the extremely large amount of computation involved in the methods, a new form of the Preisach model, linearly parameterized Preisach model, is introduced, and then an effective method to implement the model is presented. The KP model is a more effective operator to describe the Preisach class of hysteresis than the Preisach model. The relationship between the two models is revealed to verify the effectiveness of the KP model. Also, a linearly parameterized KP model is proposed. For both of the Preisach hysteresis model and the KP hysteresis model, algorithms of inverse hysteresis operators are developed, and simulations for modeling and inverse compensation are conducted. Since the Preisach model and the KP model can only describe hysteresis which has saturation states and reverse curves with zero initial slopes, a novel hysteresis model is defined to overcome these shortcomings. The newly defined hysteresis model is a low dimensional hysteresis model and can describe hysteresis which has revertible linear parts and reverse curves with non-zero initial slopes. The problems for controlling systems with input hysteresis have been pursued along three different paths: inverse compensation, gradient adaptive control and robust adaptive control for linear and nonlinear systems. Control schemes of open-loop inverse compensation and gradient adaptive inverse compensation for the Preisach hysteresis model are explored to eliminate the effects of the hysteresis when the output of the hysteretic actuator is measurable. Usually hysteresis of smart actuator in systems is not exactly known, but it can be approximately modeled via the linearly parameterized KP model. For a known linear system preceded by an unknown actuator hysteresis, a model reference control scheme combining with an adaptive inverse compensation is designed for tracking control of the systems. While an unknown linear system preceded by an unknown actuator hysteresis, a model reference adaptive control scheme together with an adaptive inverse compensation is developed for tracking control of the system. Simulations for both cases have been performed to illustrate the control methods. Finally, when hysteresis of smart actuator in systems has a non-measurable output and is modeled via the KP model or the newly defined model, a novel robust adaptive control configuration is presented for tracking control of systems. The analysis for the stability and the convergence of the control systems is conducted. Simulations are performed to verify the effectiveness of the novel control method.
Author: Jian Liang Publisher: Butterworth-Heinemann ISBN: 012818602X Category : Technology & Engineering Languages : en Pages : 288
Book Description
Precision Motion Systems: Modeling, Control, and Applications presents basic dynamics and the control knowledge needed for the daily challenges of researchers and professionals working in the field. The book explains accurate dynamics and control algorithms, along with experimental validation of precision systems in industrial, medical, airborne and spaceborne applications. By using the proposed experimental designs, readers will be able to make further developments and validations. Presents accurate dynamics and control algorithms in industrial, medical, airborne and spaceborne applications Explains basic dynamics and control knowledge, such as Laplace transformations and stability analysis Teaches how to design, develop and control typical precision systems
Author: Qingsong Xu Publisher: Springer ISBN: 3319216236 Category : Technology & Engineering Languages : en Pages : 266
Book Description
This book explores emerging methods and algorithms that enable precise control of micro-/nano-positioning systems. The text describes three control strategies: hysteresis-model-based feedforward control and hysteresis-model-free feedback control based on and free from state observation. Each paradigm receives dedicated attention within a particular part of the text. Readers are shown how to design, validate and apply a variety of new control approaches in micromanipulation: hysteresis modelling, discrete-time sliding-mode control and model-reference adaptive control. Experimental results are provided throughout and build up to a detailed treatment of practical applications in the fourth part of the book. The applications focus on control of piezoelectric grippers. Advanced Control of Piezoelectric Micro-/Nano-Positioning Systems will assist academic researchers and practising control and mechatronics engineers interested in suppressing sources of nonlinearity such as hysteresis and drift when combining position and force control of precision systems with piezoelectric actuation.
Author: Karl Johan Åström Publisher: Princeton University Press ISBN: 069121347X Category : Technology & Engineering Languages : en Pages :
Book Description
The essential introduction to the principles and applications of feedback systems—now fully revised and expanded This textbook covers the mathematics needed to model, analyze, and design feedback systems. Now more user-friendly than ever, this revised and expanded edition of Feedback Systems is a one-volume resource for students and researchers in mathematics and engineering. It has applications across a range of disciplines that utilize feedback in physical, biological, information, and economic systems. Karl Åström and Richard Murray use techniques from physics, computer science, and operations research to introduce control-oriented modeling. They begin with state space tools for analysis and design, including stability of solutions, Lyapunov functions, reachability, state feedback observability, and estimators. The matrix exponential plays a central role in the analysis of linear control systems, allowing a concise development of many of the key concepts for this class of models. Åström and Murray then develop and explain tools in the frequency domain, including transfer functions, Nyquist analysis, PID control, frequency domain design, and robustness. Features a new chapter on design principles and tools, illustrating the types of problems that can be solved using feedback Includes a new chapter on fundamental limits and new material on the Routh-Hurwitz criterion and root locus plots Provides exercises at the end of every chapter Comes with an electronic solutions manual An ideal textbook for undergraduate and graduate students Indispensable for researchers seeking a self-contained resource on control theory
Author: Lei Liu
Author: Lei Liu
Author: Tan Kok Kiong
Author: Andrew J. Fleming
Author: Lei Liu
Author: Yufeng Wang
Author: Jian Liang
Author: Yu Feng Wang
Author: Qingsong Xu
Author: Karl Johan Åström
Author: Mihai Dimian