An intelligent control method is proposed for control of rigid robot manipulators which achieves exponential tracking of repetitive robot trajectory under uncertain operating conditions such as parameter uncertainty and unknown deterministic disturbance. In the learning controller, exponentially stable learning algorithms are combined with stabilizing computed error feedforward and feedback inp...

The effect of a stationary electric field on a water droplet with a diameter of several tens micrometers in oil was examined. Such a droplet exhibits repetitive translational motion between the electrodes in a spontaneous manner. The state diagram of this oscillatory motion was deduced; at 0-20 V the droplet is fixed at the surface of the electrode, at 20-70 V the droplet exhibits small-amplitu...

In this paper we examine a method to control the stepping motion of a paralyzed person suspended over a treadmill using a robot attached to the pelvis. A leg swing motion is created by moving the pelvis without contact with the legs. The problem is formulated as an optimal control problem for an underactuated articulated chain. The optimal control problem is converted into a discrete parameter ...

Accurate tracking can facilitate the automatic extraction of metric information from video analysis. Many tracking systems rely on a sufficiently accurate dynamic model. These dynamic models must be either known a priori or learnt. This paper addresses the problem of determining dynamical system models from observed visual motion where it is assumed that the motion cannot be modeled by a single...

Abstract. Upper limb exoskeleton rehabilitation robots have been attracting significant attention by researchers due to their adaptive training, highly repetitive motion, and ability enhance the self-care capabilities of patients with disabilities. It is a key problem that existing upper exoskeletons cannot stay in line corresponding human arm during exercise. The aim evaluate whether movement ...

Background: For decades, static stretching has been the standard benchmark for training programs, because it has been shown to increase flexibility compared with other methods of stretching. Objective: The current study investigated and compared the effects of active dynamic stretching and passive static stretching on hamstring tightness. Me...

The purpose of this project was to produce a real-time installation which uses two approaches: a close approach dealing with user’s face and head position and a far approach where the installation reacts to user’s motion differently if it is repetitive or not. The installation was personalized by a Mona Lisa.

Repetitive cyclical motion and intrinsic muscle properties each impose constraints on the nervous systems to produce well-coordinated movements. We suggest that as cycle frequency increases, activation and deactivation dynamics strongly influence the neural control strategy used and may be the governing muscle property that limits performance. Pedaling and animal studies provide supporting data.