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Full 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.
Contents
Introduction: Growing Interest in Precise Actuators. Types of Precise Actuators. Applications of Precise Actuators. Nonlinear Dynamics and Modeling: Hysteresis. Creep. Friction. Force Ripples. Identification and Compensation of Preisach Hysteresis in Piezoelectric Actuators: SVD-Based Identification and Compensation of Preisach Hysteresis. High-Bandwidth Identification and Compensation of Hysteretic Dynamics in Piezoelectric Actuators. Concluding Remarks. Identification and Compensation of Friction and Ripple Force: Relay Feedback Techniques for Precision Motion Control. Identification and Compensation of Friction Model. Modeling and Compensation of Ripples and Friction in Permanent Magnet Linear Motors. Model Predictive Control of Precise Actuators: Model Predictive Control Concepts for Motion Tracking. Hybrid MPC for Ultrasonic Motors. From Parametric MPC to PID Gain Scheduling Controllers. Simulation Study and Experiment Results. Concluding Remarks. Modeling and Control of Air Bearing Stages: Problem Statements. Control of Linear Air Bearing Stage. Controller Design for the System. Experimental Results. Control of Spherical Air Bearing Stage. Performance Analysis of Spherical Air Bearing System. Concluding Remarks. Fault Detection and Accommodation in Actuators: Problem Statements. Types of Failure. Fault Diagnosis Scheme. Control of the System under No Fault Condition. Accommodation Control After Fault Detection. Extension to Output Feedback Control Design. Experimental Tests. Concluding Remarks. Case Studies of Precise Actuator Applications: Robust Adaptive Control of Piezoelectric Actuators with an Application to Intracytoplasmic Sperm Injection. Control of a 2-DOF Ultrasonic Piezomotor Stage for Grommet Insertion. Vision-Based Tracking and Thermal Monitoring of Non-Stationary Targets.
