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Due to the nonstationary characteristic of the electric locomotives in electric traction systems, the equivalent grid impedance changes frequently, which may lead to detrimental effect on the control system of electric traction PWM rectifiers. The mathematical model of an electric traction PWM rectifier is established, and the double-loop control system is designed. An online grid inductance estimation...
A stepper motor control system is introduced in the paper which adopted high-performance AVR microcontroller Atmega128 and serial communication. The system mainly consists of host computer (PC), console (Single Chip Machine) and a stepper motor. The data is interacted by the serial port between PC and console. Ultimately, the direct control of stepper motor by the PC is achieved. After debugging of...
Traditional modeling method for power electronic system is limited in application and strictly depends on system topology structure. Therefore, utilizing the analogical relation of physical quantities between mechanical system and power electronic system, this paper presents a modeling method based on Hamilton principle of analytical mechanics for power electronic system. The method is not only more...
Brachiating is the hand over hand swinging locomotion used by various primates, especially the long armed apes. By analyzing the behavior of gibbon, which moves from branch to branch swinging its body like a pendulum, the basic principle and brachiating control of the simplified two-link gibbon-type robot is studied. Based on Lagrange equations and analyzing the postural characteristic of gibbon a...
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