This paper focuses on the benefits of using computer vision to control a Gough-Stewart parallel robot. Namely, it is recalled that observing the legs of such a mechanism with a calibrated camera, thus following the redundant metrology paradigm, simplifies the control law. Then, we prove in this paper that such a control law depends on a reduced set of kinematic parameters (only those attached t...

Abstract Serving the Stewart mechanism as a wheel-legged structure, most outstanding superiority of proposed hybrid robot (WLHR) is active vibration isolation function during rolling on rugged terrain. However, it difficult to obtain its precise dynamic model, because nonlinearity and uncertainty heavy robot. This paper presents control framework with decentralized structure for single wheel-le...

This paper presents a numerical method for the determination of the identifiable parameters of parallel robots. The special case of Stewart-Gough 6 degrees-offreedom parallel robots is studied for classical and self calibration methods, but this method can be generalized to any kind of parallel robot. The method is based on QR decomposition of the observation matrix of the calibration system. N...

The presented controller system has been designed and dedicated to the intuitive and instinctive cable driven robot manipulator. The described robot manipulator is the moving platform suspended by the set of six variable-length steel cables. In practice the construction is like a standard inverted Stewart platform the platform is able to move in all six degrees of freedom with respect to its ba...

To simulate body organ motion due to breathing, heart beats, or peristaltic movements, we designed a lowcost, miniaturized SPRK (Stewart Platform Research Kit) to translate and rotate phantom tissue. This platform is 20cm× 20cm×10cm to fit in the workspace of a da Vinci Research Kit (DVRK) surgical robot and costs $250, two orders of magnitude less than a commercial Stewart platform. The platfo...

 Abstract— The Stewart platform is one example of a parallel manipulator with high force to weight ratio and fine positioning accuracy far exceeding those of a conventional serial-link arm. It is basically a closed-link type robot manipulator having 6 degrees of freedom. In this paper the implementation of an adaptive control scheme based on fuzzy logic theory is used to control the motion of ...

An inexpensive and easy to operate controller has been developed for the teleoperation control of the NIST Robot Crane. This robot crane has the Stewart platform parallel link manipulator design, with cables as parallel links and winches as actuators. The controller is currently capable of rate-position control and force control of the crane platform. The control action can take place with resp...

Electrically driven Stewart platforms are used in the field of machine tooling and robotics, where very accurate positions have to be reached associated with heavy loads. In this paper we present a pneumatically driven Stewart platform powered by fluidic air muscles. Due to the elasticity of the muscles and air as driving medium, the robot is predestined for applications where compliance plays ...

The conceptual design of parallel robots can be dated back to the time when Gough established the basic principles of a device with a closed-loop kinematic structure (Gough 1956), that can generate specified position and orientation of a moving platform so as to test tire wear and tear. Based on this principle, Stewart designed a platform for use as an aircraft simulator in 1965 (Stewart 1965)....