Soumen Sen

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— This paper presents design and performance of a novel joint based actuator for a robot run by Variable Stiffness Actuation, meant for systems physically interacting with humans. This new actuator prototype (VSA-II) is developed as an improvement over our previously developed one reported in [9], where an optimal mechanical-control co-design principle(More)
— In this paper we introduce an analysis of dependability of an elementary yet critical component of robotic systems designed to operate in environments shared with humans, i.e. the joint-level actuation system. We consider robot joints that implement the Variable Impedance Actuation (VIA) paradigm. The VIA has been demonstrated to be an effective mean to(More)
Traditionally underwater vehicles use thrusters as propulsion devices and achieve high speed. These thrusters come with their own limitations such as turbulence, cavitations etc. resulting into low efficiency and noise; the vehicles severely suffer from lack of efficiency in low speed operations. Maneuverability of vehicles using thrusters or jet propulsion(More)
The paper presents an application of Interval method to solve the inverse kinematics of a serially connected redundant manipulator, aiming its use in design optimization of manipulators. The article attempts to solve inverse kinematics, when the lengths of the links of the manipulator are not precisely known. The sources of uncertainties include(More)
Use of flexible joints in robotic system is the recent trend in applications involving physical human robot interaction. A compliant transmission introduces the flexibility for intrinsically safe robots, whereas the ability to vary Impedance recovers some of the lost performance due to presence of compliance. Stiffness/impedance variability needs presence(More)
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