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- Based on analysis of the spectrum of constant frequency PWM, periodical frequency-spreading PWM and chaotic frequency-spreading PWM, mechanism and characters of the chaotic PWM of converter for EMI suppressing were discussed. 在分析定频、周期扩频和混沌PWM频谱分布基础上,深入探讨了开关变换器混沌PWM抑制EMI的机理和特点。
- For improving the load characteristics of stepping motor, a constant frequency PWM subdivision driver for stepping motor has been developed based on field programmable gates array (FPGA). 摘要为改善步进电机的负载特性，以FPGA为核心，研制了一种恒频脉宽调制细分驱动器。
- Zero Current Switching Multi-resonant Converters based on Constant Frequency PWM and Mutual Inductance Technique PWM与谐振型开关变流器的设计及实验
- constant frequency PWM 恒频脉宽调制
- Points out the inadequacy of the sine PWM (pulsewidth modulation)signal and general PWM signal for CVCF (constant voltage & constant frequency)inverters and proposes the PWM Step-wave Signal as a new scheme. 指出用于CVCF逆变器控制中的SPWM及普通PWM信号产生方案的不足,在此基础上提出一种通过脉宽调制阶梯波来合成正弦波的方案。
- The ac power produced by APU generator is of constant frequency. APU发电机产生的交流电源是恒频的。
- PWM of constant frequency and voltage regulator PWM定频调压
- The experiment results indicate that the UPS using high frequency PWM rectifier has the characteristics of low harmonic current and high input power factor ,and has a good future. 实验结果表明 ,采用PWM整流电路的不间断电源具有注入电网的谐波电流小、输入功率因数接近 1等优点 ,是一种很有发展前途的不间断电源。
- Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency. 假定两个扬声器都发射恒定频率的纯正弦声波。
- The HV9931 is a fixed frequency PWM controller designed to drive proprietary single-stage single-switch no-isolated topology,cascading an input power factor correction(PFC)buck-boost stage and an output buck converter power stage. HVV9931是一个设计用于驱动专利单级单开关非隔离拓扑,级联一个输入PFC降压-升压级和输出降压变换器级的固定频率PWM控制器。
- This paper focuses on voltage regulation strategies of 400Hz CVCF(Constant Voltage Constant Frequency) inverter. 本文研究了400Hz恒压恒频(CVCF)中频电源逆变器波形控制策略。
- For this reason, it has the absolute advantage to adopt the technique of variable speed constant frequency (VSCF). 为了提高风能的利用率,变速恒频(VSCF)风力发电技术有其绝对的优越性。
- The VSCF (Variable Speed Constant Frequency) wind power generation is a new technology. 风速仿真是风力发电研究的重要手段之一。
- The APU engine drive the generator in lower speed to produce ac power at constant frequency. APU发动机以低速驱动发电机，从而产生恒频的交流电。
- Otherwise, the timer will use another constant frequency clock like the chipset, BIOS or the power management timer. 否则的话，计时器就将使用其它频率一致的时钟，如芯片组、基本输入与输出系统（BIOS）或电源管理计时器。
- The decoupled control of active power and reactive power is a key technology of variable speed constant frequency (VSCF) wind energy generation system. 双馈发电机的有功和无功功率的解耦控制是变速恒频(VSCF)风力发电系统的关键技术。
- A control strategy for piezoelectric transformer backlight inverter based on a constant frequency control and phase control is presented. 以定频控制和相位控制为基础的控制方式被用来控制压电式背光换流器系统在本文中被提及。
- All kinds of circuit topology and power modulation technology for variable speed constant frequency(VSCF)wind power generator system are introduced. 简单介绍了变速恒频风力发电系统中出现的一些常用拓扑结构及功率调节技术。
- His wife was a constant inspiration to him. 他的妻子经常鼓励他。
- PSM (Pulse Skip Modulation) is a novel modulation. This kind of modulation mode operates in constant width and constant frequency mode (CWCF) which differs from the fore both. 脉冲跨周调制模式(PSM, Pulse Skip Modulation)是一种全新的调制模式,异于PWM和PFM,是一种恒宽恒频(CWCF)的调制模式。
