Subir Kumar Saha – författare

This book addresses dynamic modelling methodology and analyses of tree-type robotic systems. Such analyses are required to visualize the motion of a system without really building it. The book contains novel treatment of the tree-type systems using concept of kinematic modules and the corresponding Decoupled Natural Orthogonal Complements (DeNOC), unified representation of the multiple-degrees-of freedom-joints, efficient recursive dynamics algorithms, and detailed dynamic analyses of several legged robots. The book will help graduate students, researchers and practicing engineers in applying their knowledge of dynamics for analysis of complex robotic systems. The knowledge contained in the book will help one in virtual testing of robot operation, trajectory planning and control.

This book comprises the proceedings of a rural technologies conference organised by the Rural Technology Action Group (RuTAG), which was conceptualized and initiated by Principal Scientific Adviser (PSA) to the Government of India R. Chidambaram in 2003–04. The book highlights case studies and research into providing science and technology interventions for the development of rural areas. Covering various aspects of research carried out in the area of rural technologies, it offers a valuable resource for researchers, professionals, and policymakers alike.

This book discusses the dynamic analysis of rigid-flexible robots and multibody systems with serial as well as closed-loop architecture. The book presents a formulation of dynamic model of rigid-flexible robots based on the unique approach of de-coupling of natural orthogonal complements of velocity constraints. Based on this formulation, a computationally efficient and numerically stable forward dynamics algorithms for serial-chain and closed-loop robotic systems with rigid or flexible or rigid-flexible links is presented. The proposed algorithm is shown to be a numerically efficient for forward dynamics based on the investigation methodologies built on eigen value analytics. Precision and functionality of the simulation algorithms is presented/illustrated with application on different serial and closed-loop systems (both planar and spatial types). Some of the major robotic arms used to illustrate the proposed dynamic formulation and simulation algorithms are PUMA robot, Stanford robot arm, and Canadarm. It is envisaged that the book will be useful for researchers working on the development of rigid-flexible robots for use in defense, space, atomic energy, ocean exploration, and the manufacturing of biomedical equipment.

This book focuses on end-to-end robotic applications using vision and control algorithms, exposing its readers to design innovative solutions towards sensors-guided robotic bin-picking and assembly in an unstructured environment. The use of sensor fusion is demonstrated through a bin-picking task of texture-less cylindrical objects. The system identification techniques are also discussed for obtaining precise kinematic and dynamic parameters of an industrial robot which facilitates the control schemes to perform pick-and-place tasks autonomously without any interference from the user. The uniqueness of this book lies in a judicious balance between theory and technology within the context of industrial application. Therefore, it will be valuable to researchers working in the area of vision- and force control- based robotics, as well as beginners in this inter-disciplinary area, as it deals with the basics and technologically advanced research strategies.

This book contains papers presented during the 10th Asian Conference on Multibody Systems (ACMD) and 6th Joint International Conference on Multibody System Dynamics (IMSD). The papers cover the state-of-the-art research relating to multibody dynamics, including the development of algorithms, computational efficiency, and analytical outlooks. It focuses on the utilization of multibody systems for social application, with sections catering to the field of flexible body dynamics and vehicle dynamics as well. This book can be a valuable resource to professionals, academics, automotive engineers, and machine tool manufacturers.

The book describes the methodologies for dynamics formulation, balancing, and optimizing dynamic quantities of multibody systems, such as mechanisms and robots. The writing equations of motion of multibody systems are simplified by using Decoupled Natural Orthogonal Complementary (DeNOC) matrices-based methodology originally proposed by the second author. Writing equations of motion using a DeNOC based approach enables the analytical expressions of even complicated systems which provide better physical insights of the system at-hand. The DeNOC based dynamics formulation of multibody systems is extended from system of continuum rigid-link to discrete equivalent system of point-masses coined as DeNOC-P. The dynamics formulation representing a link as point-masses is exploited to minimize the dynamic quantities shaking forces, shaking moments, or driving torques/forces by optimizing the mass redistribution of the link. Several numerical examples, such as carpet scraping machine, PUMA robot, Stewart platform, etc., are illustrated. The book also demonstrates a shape optimization methodology to realize the link with optimized mass redistribution. This textbook can be prescribed for teaching a course on dynamics and balancing of multibody systems at undergraduate and postgraduate level.