A design and implementation of edge controller for SPWM waves
Information and Automation（2011）
摘要
SPWM (Sinusoidal Pulse Width Modulation) waves are commonly used in the control of frequency conversion and test system. This paper presents a method which can control SPWM waves rising/falling time for the requirements of controlled edge. This function mainly for a high power device test systems. First, SPWM waves are generated by a generator programmed by LabVIEW, and the SPWM waves' dead time and frequency of carrier signals and modulation signals can be easily regulated by LabVIEW. Second, SPWM waves rising / falling time is adjusted by edge controller. The experimental results indicate that SPWM waves edge time adjusts from 0.1μs to 12μs can be achieved using this design.
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关键词
automatic testing,pulse width modulation,virtual instrumentation,labview program,spwm waves,carrier signals,edge controller,frequency conversion system,high power device test systems,modulation signals,sinusoidal pulse width modulation,test system,time 0.1 mus to 12 mus,wave falling time,wave rising time,constant current source,high-speed switch,rising/fallingedge,spwm,capacitance,time frequency analysis,frequency modulation,capacitors,generic programming,control systems
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