This paper presents design and kinematic analysis for a cable-driven parallel robotic (CDPR) manipulator with four cables, The CDPR manipulator produces a planar motion including two translational and one rotational degrees of freedom. To move the end-effector of CDPR, its kinematic structure is analyzed and the inverse kinematics is formulated in the closed-form solution. The experimental test...

This paper presents a dynamic model of a planar parallel manipulator including structural flexibility of several linkages. The equations of motion are formulated using the Lagrangian equations of the first type and Lagrangian multipliers are introduced to represent the geometry of multiple closed loop chains. Then, an active damping approach using a PZT actuator is described to attenuate struct...

In this paper a performance analysis is presented for a cable-suspended parallel manipulator. Experimental results from some first tests are presented and discussed to validate the theoretical calculation of load carrying capacity. The loadcarrying capacity during a given trajectory is obtained. This computational technique is tested on a typical planar cable suspended manipulator. The experime...

A path tracking control method for a kinematically redundant manipulator on a flexible base is proposed. The method is based on dynamic redundancy resolution through a vibration suppression constraint. It is shown that the end-effector path can pass via an algorithmic singularity without destabilizing the system. Simulation data from a planar system is presented, confirming that stable path tra...

Continuum manipulators offer many advantages compared to their rigid-linked counterparts, such as increased degrees of freedom and workspace volume. Inspired by biological systems, such as elephant trunks and octopus tentacles, many continuum manipulators are made of multiple segments that allow large-scale deformations to be distributed throughout the body. Most continuum manipulators currentl...

We study parametric equations, which describe the position of an in-parallel planar manipulator. We discuss isometries in the Gauss plane, then we write the loop-closure equations in terms of the rotations as the parameters.

In this paper, we propose a general control method via the intelligent algorithm for planar R-type underactuated robot. This solves unified problem of manipulator. Meanwhile, proposed is also applicable to cases nonzero initial velocity and interference rejection. Our total program includes two stages. first stage, design trajectory based on states actuated link, then controller designed track ...

This paper deals with the problem of robust trajectory tracking control, with a guaranteedH∞ performance, for free-floating manipulator systems. A control strategy is developed based on the robot mathematical model and a fuzzy adaptive approach. The dynamic model of the free-floating space manipulator is described via the Dynamically Equivalent Manipulator approach. The fuzzy adaptive control l...

The paper investigates the control of a three prismatic-prismatic-revolute (3 PPR) U-base planar parallel manipulator in the presence of parameter uncertainties and unknown disturbances. The 3PPR U-base planar parallel manipulator is a motion platform with singularity free workspace (bounded orientation angle θz ≤ ±90 ◦) and has manipulator legs located on the plane in association with a moving...

Shaking forces and shaking moments in high speed parallel manipulators are a significant cause of base vibrations. These vibrations can be eliminated by designing the manipulator to be shaking-force balanced and shaking-moment balanced. In this article an approach for the design and for the evaluation of high speed dynamically balanced parallel manipulators is presented and applied for a compar...