Contribution to the design of robotized tele-echography system

• Published in: Frontiers of Mechanical Engineering Vol. 7; no. 2; pp. 135 - 149
• Main Authors: ESSOMBA, T., LARIBI, M. A., GAZEAU, J. P., ZEGHLOUL, S., POISSON, G.
• Format: Journal Article
• Language: English
• Published: Heidelberg Higher Education Press 01.06.2012; SP Higher Education Press
• Subjects: adaptative kalman filter; Engineering; genetic algorithm; Mechanical Engineering; motion capture; Research Article; spherical parallel mechanism; tele-echography; spherical parallel mechanism; genetic algorithm; tele-echography; motion capture; adaptative kalman filter
• ISSN: 2095-0233; 2095-0241
• DOI: 10.1007/s11465-012-0326-3

This paper introduces the design of a master-slave robotized system for tele-ultrasound application. The objective of these researches is to design the slave manipulator of this system and its control device (master part). The specification process of the architecture kinematic is based on the analysis of expert's gesture during ultrasound examinations. These studies have been carried out using a motion capture system. The medical gestures were analyzed in terms of ultrasound probe attitude and used in the definition of the kinematics specifications of the proposed manipulator. The Spherical Parallel Mechanism is selected because its characteristics meet the constraint requirements. The optimal synthesis of spherical parallel manipulators is performed using a real-coded Genetic Algorithm based method. Simulations on the actuator responses of the structure allowed us the validate it. In order to control this robot, we have also designed a haptic device that provides easiness to use as well as force feedback. Its orientation control strategy is based on a use of an adaptative kalman filter which efficiency was demonstrated during experimentations.