Research on joint torque reduction in robot manipulators has received considerable attention in recent years. Minimizing the computational complexity of torque optimization and the ability to calculate the magnitude of the joint torque accurately will result in a safe operation without overloading the joint actuators. This paper presents a mechanical design for a three dimensional planar redund...

In this paper, the impact of changing the location of the tool point, on the moving platform, on the dynamics of a planar parallel manipulator is investigated. Lagrange-d’Alembert formulation is used to develop the dynamic model of the present manipulator. To evaluate the dynamic performance of the parallel manipulator, the input efforts and energy consumptions are calculated for the manipulato...

This paper discusses a general formulation both in kinematics and dynamics for under-actuated manipulator systems, represented by a freejoint manipulator, a free-floating manipulator, a flexible-base manipulator and a flexible-arm manipulator. We highlight the fact that a concept, originally developed for a particular system, is applicable to the others as well because the dynamic equations of ...

Tracking control of the direct-drive robot manipulators in high-speed is a challenging problem. The Coriolis and centrifugal torques become dominant in the high-speed motion control. The dynamical model of the robotic system including the robot manipulator and actuators is highly nonlinear, heavily coupled, uncertain and computationally extensive in non-companion form. In order to overcome thes...

This paper describes the development of a novel wearable laparoscope manipulator which is put on the surface of the patient’s hypogastric region, using the artificial muscles. The manipulator was composed of a Stewart-Gough Platform with six degrees of freedom. This manipulator is compact and very lightweight. Its weight is 364g. This manipulator can be sterilized and cleaned, and this manipula...

With the recent technological advancement in submersible systems, the research and development of underwater manipulator robot is highly desirable. This paper focuses on comparing simulation versus real-time manipulator dynamics control, and comparison of intelligent underwater manipulator-robot for effective Ocean-based research, industrial and defense applications. Software package such as MA...

In this paper, we discuss the problem of how a free-floating space manipulator can be mapped to a conventional, fixed-base manipulator which preserves both its dynamic and kinematic properties. This manipulator is called dynamically equivalent manipulator (DEM). The DEM concept not only allows us to model a free-floating space manipulator system with simple, well-understood methods, but also ca...

This paper presents a fundamental study of remote manipulator system, to be applied to the assembling precise and small parts, the handling of medical samples in a culture cabinet and so on. This system consists of a small and precise slave manipulator and a master manipulator of which the size is adapted to a human operator. Displacement of the master manipulator is reduced and transferred to ...

in this research work, a novel parallel manipulator with high positioning and orienting rate is introduced. this mechanism has two rotational and one translational degree of freedom. kinematics and jacobian analysis are investigated. moreover, workspace analysis and optimization has been performed by using genetic algorithm toolbox in matlab software. because of decreasing moving elements, it i...

dimensional synthesis of a parallel robot may be the initial stage of its design process, which is usually carried out based on a required workspace. since optimization of the links lengths of the robot for the workspace is usually done, the workspace computation process must be run numerous times. hence, importance of the efficiency of the algorithm and the cpu time of the workspace computatio...