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Author: Stefan Reichl Publisher: Sudwestdeutscher Verlag Fur Hochschulschriften AG ISBN: 9783838121697 Category : Languages : en Pages : 248
Book Description
Inverse dynamics problems arise in several mechanical systems. The aim is to calculate the inputs of a system in order that the outputs are identical to predefined or measured target signals. The motivation for inverse methods is related to practical applications in robotics, cranes or test rigs in the automotive and agricultural industry. The book considers four mathematical methods regarding to inverse problems in underactuated multibody systems. The first method under consideration is called virtual iteration. The algorithm is suitable for large multibody systems and finite element models, which are nearly linear. The second approach formulates the equations of motion as differential-algebraic equations and introduces so called control or servo constraints. The inverse problem can also be formulated as an optimal control problem. The basis is a cost functional, which includes the system outputs and the targets. The fourth method is a flatness-based trajectory tracking control. The considered methods are applied to academic and industrial examples.
Author: Stefan Reichl Publisher: Sudwestdeutscher Verlag Fur Hochschulschriften AG ISBN: 9783838121697 Category : Languages : en Pages : 248
Book Description
Inverse dynamics problems arise in several mechanical systems. The aim is to calculate the inputs of a system in order that the outputs are identical to predefined or measured target signals. The motivation for inverse methods is related to practical applications in robotics, cranes or test rigs in the automotive and agricultural industry. The book considers four mathematical methods regarding to inverse problems in underactuated multibody systems. The first method under consideration is called virtual iteration. The algorithm is suitable for large multibody systems and finite element models, which are nearly linear. The second approach formulates the equations of motion as differential-algebraic equations and introduces so called control or servo constraints. The inverse problem can also be formulated as an optimal control problem. The basis is a cost functional, which includes the system outputs and the targets. The fourth method is a flatness-based trajectory tracking control. The considered methods are applied to academic and industrial examples.
Author: Yinping Yang Publisher: ISBN: 9781013282683 Category : Mathematics Languages : en Pages : 250
Book Description
The present work deals with the inverse dynamics simulation of underactuated multibody systems. In particular, the study focuses on solving trajectory tracking control problems of differentially flat underactuated systems. The use of servo constraints provides an approach to formulate trajectory tracking control problems of underacutated systems, which are also called underactuated servo constraint problems. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
Author: Yang, Yinping Publisher: KIT Scientific Publishing ISBN: 3731506262 Category : Technology (General) Languages : en Pages : 256
Book Description
The present work deals with the inverse dynamics simulation of underactuated multibody systems. In particular, the study focuses on solving trajectory tracking control problems of differentially flat underactuated systems. The use of servo constraints provides an approach to formulate trajectory tracking control problems of underacutated systems, which are also called underactuated servo constraint problems.
Author: Youngjin Choi Publisher: Springer Science & Business Media ISBN: 9783540205678 Category : Technology & Engineering Languages : en Pages : 132
Book Description
Though PID control has a long history as much as its life force since Ziegler and Nichols published the empirical tuning rules in 1942, surprisingly, it has never been changed in the structure itself. The strength of PID control lies in the simplicity, lucid meaning, and clear e?ect. Though it must be a widely - cepted controller for mechanical control systems, it is still short of theoretical bases,e.g., optimality, performance tuning rules, automatic performance t- ing method, and output feedback PID control have not been clearly presented formechanicalcontrolsystems.Thesesubjectswillbethoroughlydiscussedin this book. There are many books of PID controller for the purpose of process control, but it is hard to ?nd a book on the characteristics of PID control for mechanical systems. In the ?rst place, when nonlinear optimal control theory is applied to mechanical systems, a class of Hamilton-Jacobi (HJ) equations is derived as a result of optimization. There are two methods to solve a class of HJ eq- tions: a direct method using an approximation and inverse method ?nding the performance index from a class of HJ equations. Also, there are two control methods according to the objective: the set-point regulation control and t- jectory tracking control. The trajectory tracking control is basically di?erent from set-point regulation one in that the desired con?guration, velocity and acceleration pro?les according to time progress are added to the motion of mechanical system. This book is focusing on an inverse optimization method and the trajectory tracking control system.
Author: W. Khalil Publisher: Butterworth-Heinemann ISBN: 0080536611 Category : Computers Languages : en Pages : 503
Book Description
Written by two of Europe’s leading robotics experts, this book provides the tools for a unified approach to the modelling of robotic manipulators, whatever their mechanical structure. No other publication covers the three fundamental issues of robotics: modelling, identification and control. It covers the development of various mathematical models required for the control and simulation of robots. · World class authority· Unique range of coverage not available in any other book· Provides a complete course on robotic control at an undergraduate and graduate level
Author: Alexander Reiter Publisher: Springer Nature ISBN: 365828594X Category : Technology & Engineering Languages : en Pages : 191
Book Description
Alexander Reiter describes optimal path and trajectory planning for serial robots in general, and rigorously treats the challenging application of path tracking for kinematically redundant manipulators therein in particular. This is facilitated by resolving both the path tracking task and the optimal inverse kinematics problem simultaneously. Furthermore, the author presents methods for fast computation of approximate optimal solutions to planning problems with changing parameters. With an optimal solution to a nominal problem, an iterative process based on parametric sensitivities is applied to rapidly obtain an approximate solution. About the Author: Dr. Alexander Reiter is a senior scientist at the Institute of Robotics of the Johannes Kepler University (JKU) Linz, Austria. His major fields of research are kinematics, dynamics, and trajectory planning for kinematically redundant serial robots as well as real-time methods for solving parametric non-linear programming problems.
Author: Robert Seifried Publisher: Springer Science & Business Media ISBN: 3319012282 Category : Technology & Engineering Languages : en Pages : 257
Book Description
Underactuated multibody systems are intriguing mechatronic systems, as they posses fewer control inputs than degrees of freedom. Some examples are modern light-weight flexible robots and articulated manipulators with passive joints. This book investigates such underactuated multibody systems from an integrated perspective. This includes all major steps from the modeling of rigid and flexible multibody systems, through nonlinear control theory, to optimal system design. The underlying theories and techniques from these different fields are presented using a self-contained and unified approach and notation system. Subsequently, the book focuses on applications to large multibody systems with multiple degrees of freedom, which require a combination of symbolical and numerical procedures. Finally, an integrated, optimization-based design procedure is proposed, whereby both structural and control design are considered concurrently. Each chapter is supplemented by illustrated examples.
Author: Yao Wang Publisher: ISBN: Category : Languages : en Pages : 127
Book Description
Application of parallel manipulator has received a lot of attention recently in the industry and the robotic community due to its high accuracy, high rigidity, high operation speed, high load capacity and high stiffness as compared with the conventional serial manipulator. One of the most popular parallel manipulators that are commonly used for aircraft simulator is the general purpose 6 degree-of-freedom (DOF) Stewart parallel manipulator. Despite these advantages, the kinematic and dynamic analyses are extremely complicated. Such models are important in terms of qualitative analysis of the required actuator forces to realize certain end-effector task (inverse dynamics), and computing the corresponding end-effector task based on certain input to the system (forward dynamics). However, till date, not much general symbolic solution is reported to aid the above process. Most of the prior work required some form of heuristic, or introduction of extra spring/damper elements to approximate the solutions. This thesis addresses the possibility in using the state-of-the-art symbolic manipulation software tool to derive the general kinematic and dynamic equation of motion of the system so that more accurate solution can be computed. However, there are still consideration are needed to accurately simulate such systems. We address these issues using the example of Stewart parallel manipulator and highlight the solution to the corresponding challenges. Control using stabilizing inverse dynamics was implemented to enhance trajectory tracking of the system.
Author: Stefan Reichl
Author: Stefan Reichl
Author: Stefan Reichl
Author: Yinping Yang
Author: Yang, Yinping
Author: Youngjin Choi
Author: Kevin M. Lynch
Author: W. Khalil
Author: Alexander Reiter
Author: Robert Seifried
Author: Yao Wang