Description: 基于uPSD3334单片机pwm波形产生程序，频率可调，占空比可调。可同时产生三路PWM波形。在电力电子中有极好的应用。使用Kerl开发环境-based uPSD3334 MCU pwm waveform generator procedures, adjustable frequency, duty cycle adjustable. May also have three PWM waveform. In power electronics has an excellent application. Kerl use development environment Platform: |
Size: 111090 |
Author:毛斌 |
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Description: 基于uPSD3334单片机pwm波形产生程序，频率可调，占空比可调。可同时产生三路PWM波形。在电力电子中有极好的应用。使用Kerl开发环境-based uPSD3334 MCU pwm waveform generator procedures, adjustable frequency, duty cycle adjustable. May also have three PWM waveform. In power electronics has an excellent application. Kerl use development environment Platform: |
Size: 110592 |
Author:毛斌 |
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Description: 基于FPGA的自治型SPWM波形发生器的设计！正弦脉宽调制（SPWM）技术在以电压源逆变电路为核心的电力电子装置中有着广泛的应用，如何产生SPWM脉冲序列及其实现手段是PWM技术的关键。大家共同探讨哈！-FPGA based SPWM autonomy-based waveform generator design! Sinusoidal pulse width modulation (SPWM) technology in the voltage source inverter circuit as the core of the power electronic devices have a wide range of applications, how to generate SPWM pulse sequence and its implementation means PWM technology is the key. Kazakhstan investigate everyone! Platform: |
Size: 4096 |
Author:小喻 |
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Description: PWM波形产生举例，TMS320快速傅里叶变换，串行外设接口应用举例-PWM waveform generator, for example, TMS320 Fast Fourier Transform, serial peripheral interface applications, for example Platform: |
Size: 152576 |
Author:崔猪 |
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Description: PWM控制就是产生一定周期，占空比不同的方波信号，当占空比较大时，电机转速较高，否则电机转速较低。当采用FPGA产生PWM波形时，只需FPGA内部资源就可以实现，数字比较器的一端接设定值输出，另一端接线性递增计数器输出。当线性计数器的计数值小于设定值时输出低电平，当计数器大于设定值时输出高电平，这样就可通过改变设定值，产生占空比不同的方波信号，从而达到控制直流电机转速的目的。
直流电机控制电路主要由2部分组成，如图1所示：
FPGA中PWM脉宽调制信号产生电路；
FPGA中正/反转方向控制电路
-PWM control is a certain cycle, a different duty cycle square wave signal, when the duty cycle is high, higher motor speed, or lower motor speed. When the PWM waveform generated using FPGA, the FPGA internal resources only can be achieved, the figure one comparator output termination setting, the other linear incremental counter output termination. When the value of linear counter output is less than low-level settings, when the counter output is greater than high settings, so that by changing the settings can produce different duty cycle square wave signal, DC motor control to achieve the purpose of speed.
DC motor control circuit mainly by 2 parts, as shown in Figure 1:
FPGA in the PWM pulse width modulation signal generator circuit
Chiang Kai-shek FPGA/reverse direction control circuit Platform: |
Size: 37888 |
Author:袁玉佳 |
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Description: 基于单位功率因数控制策略的三相全控整流。开关器件采用IGBT。PWM波形产生控制电路里使用的饱和限制模块，就是限制波形的幅度的，对输出直流电压幅值影响很大。-Based on the unity power factor control strategy of three-phase full-controlled rectifier. Switching device IGBT. PWM waveform generator control circuit in the saturation limit the use of modules, is to restrict the range of waveform and amplitude of the output DC voltage impact. Platform: |
Size: 8192 |
Author:雷宾 |
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Description: 基于CPLD的PWM波形的发生器，编程语言为verilog,开发环境为QuartusII.-The CPLD-based PWM waveform generator, the programming language to verilog, development environment for QuartusII. Platform: |
Size: 2048 |
Author:ouyangyajuan |
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Description: PWM原理
2、调制器设计思想
3、具体实现设计
一、 PWM（脉冲宽度调制Pulse Width Modulation）原理：
脉冲宽度调制波通常由一列占空比不同的矩形脉冲构成，其占空比与信号的瞬时采样值成比例。图1所示为脉冲宽度调制系统的原理框图和波形图。该系统有一个比较器和一个周期为Ts的锯齿波发生器组成。语音信号如果大于锯齿波信号，比较器输出正常数A，否则输出0。因此，从图1中可以看出，比较器输出一列下降沿调制的脉冲宽度调制波。
-PWM principle
2, modulator design ideas
3, concrete realization of the design
1, PWM (Pulse Width Modulation Pulse Width Modulation) principle:
Pulse-width modulation wave is usually a rectangular pulse duty cycle of different composition, its duty cycle and the signal is proportional to the instantaneous sampling value. Figure 1 shows the pulse-width modulation system block diagram and waveform diagram. The system has a comparator and a cycle composed of Ts of the sawtooth generator. If the voice signal is greater than sawtooth signal, the comparator output of the normal number of A, otherwise output 0. Thus, as can be seen from Figure 1, the comparator output a falling edge pulse width modulation wave modulation.... Platform: |
Size: 61440 |
Author:weiwen |
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Description: STC15W4K32S4系列单片机有6路高精度PWM，即PWM2、PWM3 、PWM4 、PWM5 、PWM6、PWM7。PWM波形发生器为每路PWM又设计了两个用于控制波形翻转的计数器T1和T2，可以非常灵活的控制每路PWM的高电平和低电平的宽度，实现对PWM占空比及PWM输出延迟进行控制。(STC15W4K32S4 series microcontroller has 6 high precision PWM, that is, PWM2, PWM3, PWM4, PWM5, PWM6, PWM7. PWM waveform generator for each PWM and designed two is used to control the waveform flip counter T1 and T2, each PWM control can be very flexible to the high level and the low level of PWM width, duty ratio and PWM output control delay.) Platform: |
Size: 216064 |
Author:hotcoffee
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