A method to solve the trajectory generation problem in redundant degree of freedom manipulators has been proposed, in which the variational approach and the B-Spline curve are introduced for minimization of the consumed electrical energy of a robot manipulator system. In the proposed method, the inverse matrix of Jacobian calculation is not required, and the minimal trajectory error is guaranteed while minimizing the consumed electrical energy. The theory, simulation, and experiments are presented in this paper.

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This paper proposes a new output voltage control for an inverter system, which has time-delay and nonlinear load. In the next generation X-ray computed tomography of a medical device (X-ray CT) that uses the contactless power transfer method, the feedback signal often contains time-delay due to AD/DA conversion and error detection/correction time. When the PID controller of the inverter system is received the adverse effects of the time-delay, the controller often has an overshoot and a oscillated response. In order to overcome this problem, this paper proposes a compensation method based on the Smith predictor for an inverter system having a time-delay and the nonlinear loads which are the diode bridge rectifier and X-ray tube. The proposed compensation method consists of the hybrid Smith predictor system based on an equivalent analog circuit and DSP. The experimental results confirm the validity of the proposed system.

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An advanced single-phase active power filter for the compensation of instantaneous harmonic components in non-linear load current is presented in this paper. A novel signal processing technique using adaptive neural network algorithm is applied and evaluated for the on-line detection of instantaneous harmonic current components generated by nonlinear loads And the feasibility of this adaptive neural network algorithm is substantially confirmed from an experimental point of view.

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