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Abstract: This paper introduced the principle of induction-hearting and the makeup of pulse width modulated （PWM） induction-hearting power system. 摘要: 介绍了电磁感应加热的基本原理，详细说明了PWM串联型中频感应电源的原理及各部分组成。
Characteristic of pulse width modulation PWM in The voltage-to-frequency converter VFC are analyzed under the basic conversion preference of charge balancing VFC. 在分析电荷平衡型VFC转换特性的基础上,根据VFC的脉冲宽度调制特性,提出基于脉宽调制式的AD转换新技术。
pulse width modulating PWM 脉宽调制PWM
Keywords multi-parameter patient monitor;witching power supply;pulse width modulation（PWM）; 多参数监护仪;开关电源脉宽调制;
Pulse width modulated PWM power supplies, ,Elsevier Science Publishers B.V.,0-444-89790-9,TN787 脉宽调制变换器型稳压电源,金刚,科学出版社,,TN787
Keywords active vibration isolation multiloop control magnetical suspension digital signal processor（DSP） pulse width modulation（PWM）; 关键词主动隔振;多回路控制;磁悬浮;数字信号处理器;脉宽调制;
Keywords oil pipeline transportation;engine control transact unit;pulse width modulation（PWM）;intelligent electronic speed regulator;flexible junctor; 管线输油;发动机控制执行器;脉宽调制;智能电子调速器;柔性连接件;
Pulse width modulation (PWM) is an analog signal level for digital encoding. 脉冲宽度调制（PWM）是一种对模拟信号电平进行数字编码的方法。
High-speed on-off valves are used and controlled with pulse width modulation (PWM) in this system. 系统应用高速开关阀，用脉宽调制(PWM)的方法进行控制。
The inverse control method for pulse width modulation (PWM) inverter-fed induction motors is discussed. 摘要针对电压源型逆变器供电的感应电动机，应用逆系统理论提出了一种新型控制策略。
Because of built-in PWM circuit(pulse width modulation circuit),dimming range is wider than earlier type products. 因使用PWM（脉冲宽度调制）电路，产品具有较宽的调光范围。
The device introduced can transform 12 V DC into 220 V/50 Hz AC by making use of sine pulse width modulating signals produced by the SG3525. 该电源利用脉宽调制器芯片SG3525产生正弦脉宽调制信号;实现了由直流12V到交流220V/50Hz的转换.
The principle of pulse width modulation (PWM) is analyzed. A PWM circuit model is set and its characteristics are simulated by PSCAD/EMTDC. 对脉宽调制(PWM)的原理进行了分析，用PSCAD/EMTDC搭建了PWM电路模型，并对其特性进行了仿真分析。
To reduce the current harmonics around switching frequency of the three-phase pulse width modulation (PWM) rectifiers,an LCL filter has been adopted. 此外,文中对LCL滤波的三相PWM整流器数学模型进行了详细的分析,并从理论和仿真两方面证明了LCL滤波器的优越性能。
A new optimal pulse width modulation(PWM) technique with unsymmetrical switching angles was introduced for high power applications. 针对大功率逆变器的应用介绍了一种基于不对称开关角的优化脉冲宽度调制方法。
A design to generate 8 bit to 16 bit resolution ratio pulse width modulated (PWM) outputs based on programmable counter array (PCA) is provided. 摘要给出了基于可编程计数器阵列PCA的8位到16位分辨率的PWM波形的生成方法。
The controller, which adopts PIC16F877 as the master control chip, controls the coils with PWM (pulse width modulation) through power devices. 控制器以PIC16F877为主控制芯片，通过功率器件对线圈实行分组PWM（脉冲宽度调制）控制。
This controller integrates pulse width modulation(PWM) and pulse density modulation(PDM) together,and can easily change between the two modulations. 该设计集成了脉冲宽度调制(PWM)和脉冲密度调制(PDM)两种调制方式,并可以在两者间切换。
This dissertation proposes a novel asymmetric pulse width modulation (PWM) scheme for four-switch three-phase (FSTP) brushless dc (BLDC) motor drives. 马达驱动系统一直是工业发展不可或缺的重要一环，降低马达驱动器的制造成本也是不变的趋势。
The 80c196 single-chip computer adjusts the output of PWM(pulse width modulation) to control the field current of the generat. 通过调整PWM输出来控制发电机的励磁电流,达到稳定发电机的输出电压、输出电流和限流充电的目的。