Xiafu Peng

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In order to meet the application of OPC for process control, a set of OPC server interface software is designed with OPC specification in this paper. This software organizes the device data as OPC standard data for other equipments which also support the OPC standard, and it successfully solves the communication between different equipment manufacturers.(More)
For the original DTC-SVM methods, torque would decrease in steady state which could deteriorate the system performance. To fix this problem, the paper proposed a modified DTC-SVM method by introducing additional speed feedback. In the proposed strategy, the prediction of stator flux is divided into two parts which can make PI controller work more effective.(More)
The satellite power system is an important piece of the satellite system; targeting on the problems of complex fault mechanisms and uncertainty between fault type and fault symptoms, the method of Bayesian network fault diagnosis in the satellite power system has been raised. In the learning process of Bayesian network structure, this algorithm adopts(More)
Multi-phase motors are nowadays considered for high-power variable-speed drive applications due to numerous advantages that they offer when compared to their three-phase counterparts. Multi-phase voltage source inverters are invariably used to provide multi-phase variable voltage and variable frequency with appropriate pulse width modulation (PWM) control.(More)
The simulation of ocean wave is known to have great significance for the improvement of transportation on the sea. In this paper, the simulation of one fixed point on the sea surface based on ITTC two-parameter wave spectrum and directional spectrum is presented. In order to improve reality and real-time, we used levels of detail technology(LOD) programmed(More)
This paper presents a general method to obtain real-time finger force for a three fingered dexterous hand in the process of operation task. On the basis of analyzing the kinetic model, the specific algorithm of the optimal contact force is proposed. The key of the algorithm shows that direction of the force is handled off line and the magnitude on line(More)
In this paper, a ratio control structure with two adaptive Blend stations is proposed. Except providing a high ratio performance for set-point changes and load disturbance that occurs in the first loop, the proposed structure achieves to keep the value of y<sub>2</sub>/y<sub>2</sub> close to the desired ratio a when load disturbance happens in the second(More)