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This paper aims to analyze the applied hybrid controlled three-phase grid-connected inverter for marine current power generation system used in distributed generation. As inverter is a key part of the grid-based system, grid-connected technology plays an important role in the distributed generation to meet the stricter grid interconnection standards. In order to improve the power quality and strengthen...
Research work of wire extension control with Dual freedom PID controller in pulsed MIG welding process of aluminum alloy. In the condition of optimum parameters, the simulations were firstly completed by separately using Routine PID control and Dual freedom PID control, based on designing the wire speed of wire extension step response and gaining identification model. Based on the results of simulation...
A new efficient welding method, Consumable DE-GMAW was proposed. According to the many problems occurred when the welding process is open-loop, such as instability of the welding process and a large welding spatter, etc. A real-time target hardware platform was built for consumable DE-GMAW based on xPC, and a rapid prototyping control system was also developed for consumable DE-GMAW with the Matlab/Simulink...
Two distinguish theorem of robust stability for discreteem are put forward in this paper. The first-order discrete nonlinear systems with uncertainties and second-order discrete nonlinear systems with uncertainties are researched, respectively, the discrete robust controller is designed, and the constrained conditions for control gain and sample frequency are given, the sensitivity of sample frequency...
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