MOTION CONTROL

This book addresses the mathematical and the practical aspects of motion implied by advanced control theory. The richness and power of the theory are demonstrated by separate analyses of single-model and multi-modal repertoires, consisting of verities of estimation and control facets. Starting with purely mathematical concepts, specifically, abstract probability and information theories, model control theory is gradually revealed as a rather amazing domain. The mathematical equations, taking essentially simple forms, are exposed as powerful generators of motion. Moreover, seemingly obvious applications of the theory, such as high-performance aircraft control make room for unexpected virtual reality feedback in control of motion for the neurologically impaired. Following the presentation of some historical milestones and mathematical preliminaries, the book is divided into four parts. The first deals with minimal-order models of state estimation and control. The second addresses multi-modal estimation and control, which facilitates the operation of high-performance aircraft in large flight envelopes. The third presents the transition from naturally nonlinear control of movement in obstacle avoidance and object targeting to virtually linear control of movement in the neurologically impaired. The fourth and final part of the book addresses the application of virtual sensory feedback in walking with specific neurological impairment. While the clinical studies reported were all based on a single-model paradigm, a later reflection reveals that, given the variety of neurological symptoms associated with the relevant disorders, a multi-modal approach, as that addressed in the control of high-performance aircraft in a large flight envelope, would be similarly applicable in the treatment of neurological disorders. Contents: Introduction Some Mathematical Preliminaries Sensory Feedback Control: Optimal State-Space Design and Analysis: Minimal-Order State Estimation of Feedback Linear Systems Estimability and Regulability of Linear Systems Minimal-Order Linear State Estimation Under Performance Constraints Minimal-Order Model Identification Minimal-Order Predictability of Future States Multi-Modal Linear Control Systems: Distance Measures for Stochastic Models Convergence on Finite Parameter Sets Linear Model Selection from a Finite Set Single and Multiple Stochastic Model Refuction Multi-Modal Aircraft Information-Guided Movement From Natural to Virtual Model Selection in Biological Motion Control: Naturally Nonlinear Biological Motion Control Virtually Linear Biological Motion Control Gait Entrainment by Sensory Feedback in the Neurologically Impaired: Walking on Virtual Tiles with Parkinson's Disease Auditory Feedback for Gait Improvement in Parkinson's Disease At-Home Audio-Visual Training by Parkinson's Patients Virtual Reality Cues for Improvement of Gait in Patients with Multiple Sclerosis Auditory Feedback Control for Improvement of Gait in Patients with Multiple Sclerosis The Gait-Entrainment Edge of Glide-Symmetric Virtual Visual Feedback Gait Improvement in Patients with Cerebral Palsy by Visual and Auditory Feedback A Brief Study of Virtual Reality Feedback for Gait Improvement in Patients with Idiopathic Senile Gait Disorders and Patients after Stroke Readership: Graduate students and professors of control theory, applied mathematics, electrical engineering, aeronautical engineering, mechanical engineering, medicine, computer science, physics, biology, neurology, psychology, cognition, linguistics, zoology, neurologists, doctors, physical therapists, neuroscientists, mathematicians, physicists, computer scientists. Biologists, psychologists, linguists, zoologists. 'Following an exposition of systems and control theory foundations, Motion Control presents the author's work with medical collaborators on human gait problems; this includes a presentation of their virtual reality feedback device for gait stabilization, in...