Whole -Body Impedance Control of Wheeled Humanoid Robots

Whole -Body Impedance Control of Wheeled Humanoid Robots
Whole-Body Impedance Control of Wheeled Humanoid Robots
Springer | Robotics | Jul. 29 2016 | ISBN-10: 331940556X | 195 pages | pdf | 11.17 mb

Authors: Dietrich, Alexander
Focuses on the skills for soft contact interactions
Investigates the concept of hierarchy-based control thoroughly, and extends the classical state-of-the-art method for the task prioritization by new features
such as dynamic task hierarchies and the treatment of conflicting objectives
All algorithms reported are experimentally validated on a mobile humanoid robot
Gives an outlook to the prospective use of the proposed controller as an essential component in an integrated framework

Introducing mobile humanoid robots into human environments requires the systems to physically interact and execute multiple concurrent tasks. The monograph at hand presents a whole-body torque controller for dexterous and safe robotic manipulation. This control approach enables a mobile humanoid robot to simultaneously meet several control objectives with different pre-defined levels of priority, while providing the skills for compliant physical contacts with humans and the environment.
After a general introduction into the topic of whole-body control, several essential reactive tasks are developed to extend the repertoire of robotic control objectives. Additionally, the classical Cartesian impedance is extended to the case of mobile robots. All of these tasks are then combined and integrated into an overall, priority-based control law. Besides the experimental validation of the approach, the formal proof of asymptotic stability for this hierarchical controller is presented. By interconnecting the whole-body controller with an artificial intelligence, the immense potential of the integrated approach for complex real-world applications is shown. Several typical household chores, such as autonomously wiping a window or sweeping the floor with a broom, are successfully performed on the mobile humanoid robot Rollin' Justin of the German Aerospace Center (DLR).
The results suggest the presented controller for a large variety of fields of application such as service robotics, human-robot cooperation in industry, telepresence in medical applications, space robotics scenarios, and the operation of mobile robots in dangerous and hazardous environments.

Number of Illustrations and Tables
11 b/w illustrations, 71 illustrations in colour
Topics
Robotics and Automation
Artificial Intelligence (incl. Robotics)
User Interfaces and Human Computer Interaction

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