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Description: 直流电动机双极性可逆PWM系统，其中电流PI调节控制中，根据转向标志DIRECTION来决定输出极限：正转时，输出范围是0-250，反转时是250-5-DC motor reversible bipolar PWM system, current PI regulator control, according to signs DIRECTION decision to limit exports : being transferred, the output range is 0-250, when the reverse is 250-5
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Size: 6520 |
Author: 白小石 |
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Description: 用DSP实现直流电动机速度，全部控制程序包括速度PI调节，电流PI调节，PWM控制，主程序进行电机转向的判别-DSP DC motor speed control procedures including full speed PI regulator and current PI regulator, PWM control, the main program for the motor to discriminant
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Size: 6144 |
Author: 白小石 |
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Description: 直流电动机双极性可逆PWM系统，其中电流PI调节控制中，根据转向标志DIRECTION来决定输出极限：正转时，输出范围是0-250，反转时是250-5-DC motor reversible bipolar PWM system, current PI regulator control, according to signs DIRECTION decision to limit exports : being transferred, the output range is 0-250, when the reverse is 250-5
Platform: |
Size: 6144 |
Author: 白小石 |
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Description: 这是基于dsp的交流电机调速软件。编程环境是ccs2000，算法用的是spwm方法，用的是c语言和汇编混编，程序里有注释。*.h和*.cmd文件是头文件和内存分配文件-this is the program of the alternating-current machine speed control based on dsp.the progran enviroment is ccs2000,the arithmetic is the spwm,it is programmed with c and asm,there are annotationins the program.*.h and*.cmd is the head file and the memory distributive file.
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Size: 71680 |
Author: 费仙凤 |
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Description: he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with only 2 discrete levels, for example 0V and 5V and a constant period. The current value of this signal at a certain poiTnt of time is proportional to its Duty Cycle. That s the High Time during one period divided by the period. It can also be calculated as the average value during a particular period. That means after low pass filtering, (e.g. RC circuit) the signal becomes analog, with an actual value controlled by the microcontroller. The PWM functionality enables the LPC932 to control for example the speed of DC motors or the brightness of electric lighting.-he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with only two discrete levels, for example 0V and 5V and a constant period. The current value of this signal at a certain time is of poiTnt proportional to its Duty Cycle. That s the High Time during one period divided by the period. It can also be calculated as the average value during a particular period. That means after low pass filtering (eg RC circuit) the signal becomes analog, with an actual value controlled by the microcontroller. The PWM functionality enables the LPC932 for example to control the speed of DC motors or the brightness of electric lighting.
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Size: 1024 |
Author: |
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Description: pwm的输出调整波形在线调节输入的电压和电流的数值-pwm adjustment of the output waveform online regulate the importation of voltage and current values
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Size: 324608 |
Author: 李拧 |
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Description: 阀控制器控制电流大小的程序，利用STC单片机做PWM输出的例子-valve controller size of the current procedures, the use of SCM do STC examples of PWM output
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Size: 1024 |
Author: 王兴刚 |
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Description: 在大功率DC/DC开关电源中,为了获得更大的功率，特别是为了得到大电流时，经常采用N个单元并联的方法。多个单元并联具有高可靠性，并能实现电路模块标准化等优点。然而在并联中遇到的主要问题就是电流不均，特别在加重负载时，会引起较为严重的后果。普通的均流方法是采取独立的PWM控制器的各个模块，通过电流采样反馈到PWM控制器的引脚FB或者引脚COMP，即反馈运放的输入或者输出脚来调节输出电压，从而达到均流的目的。显然，电流采样是一个关键问题：用电阻采样，损耗比较大，电流放大后畸变比较大；用电流传感器成本高；用电流互感器采样不是很方便，同时会使电流失真。本文提出了一种新型的、方便的、无损的电流采样方法，并在这种电流检测方法的基础上实现了并联系统的均流。 -in High Power DC/DC switching power supply, in order to gain more power, in particular in order to obtain the current, frequently using N units parallel method. Parallel number of modules with high reliability, and the circuit module can achieve the advantages of standardization. However, in parallel encountered in the current main problem is uneven, particularly in the heavier load, it will cause more serious consequences. The general flow is to have an independent PWM controller modules, Current sampling through feedback to the PWM controller pin FB pin or COMP. that feedback operational amplifier input or output pin to adjust the output voltage, thereby achieving both flow purposes. Clearly, the current sampling is a key question : sampling resistor, loss comparison, the amplifier dis
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Size: 12288 |
Author: duanshaochun |
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Description: 4x4键盘扫描输入需要电机转动的相位，6为数码管显示当前的角度等功能。单片机程序用C51编写。--4x4 keyboard input scanning needs of phase motor rotation, six digital control display the current perspective, and other functions. C51 microcontroller with the preparation procedures.-
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Size: 117760 |
Author: helei |
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Description: 升压型功率因数修正器操作在不连续电流模式下的大信号分析,新一代单片PFC+PWM控制器,一种新颖的功率因数校正控制技术研究-boost power factor that is not in continuous operation mode under the current large-signal analysis, PFC new generation of single-chip PWM controller, a novel power factor correction control technology
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Size: 1240064 |
Author: 温飞雪 |
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Description: 一种基于KA3525的单片机辅助PWM控制电源电路,设计了一种基于该电流型PWM控制芯片、单片机辅助、实现输出电压可调的稳压电源电路-KA3525-based PWM control of single-chip auxiliary power circuit design based on the current-mode PWM control chip, single-chip support, to achieve an output voltage adjustable regulated power supply circuit
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Size: 189440 |
Author: GM |
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Description: 采用极点配置的电压电流双PI闭环PWM逆变器仿真-Pole placement using the voltage and current dual-PI closed-loop simulation of PWM inverter
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Size: 18432 |
Author: 孔维靖 |
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Description: 这是一个单片机进行脉宽调制(PWM) 直流电机调速测试程序.UNL2003提供电机驱动电流.(<=500MA/5V)，使用六个按键实现六种不同速度
-This is a single chip for pulse width modulation (PWM) DC Motor Speed test procedure. UNL2003 to provide motor drive current. (< = 500MA/5V), using the six keys to achieve the speed of six different
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Size: 1024 |
Author: qcmc |
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Description: ：随机脉宽调制是解决交流调速系统 中声学噪声的直接有效方法。随机零矢 量分 布是一种很好 的随
机方法，但其不对称的开关函数使其不适用于传统的电流采样方法。通过仿真表明 PWM周期中点采样的方
法无法得到准确的平均值，在分析不对称模式引起的纹波电流对电流平均值影响的基础上，提出了一种适合
于 RZV分布 的电流采样方法 。仿真结果证实该方法简单可行 。 -: Random pulse width modulation speed control system to solve the exchange of acoustic noise in a direct and effective way. Random zero vector distribution is a good random method, but the asymmetrical switching function so that it does not apply to the traditional current sampling methods. PWM cycle through the simulation shows that the mid-point sampling methods can not be an accurate, on average, the analysis of asymmetric mode ripple current caused by the impact on the current average value based on the proposed distribution of a suitable RZV current sampling methods. The simulation results confirmed that the method is simple and feasible.
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Size: 138240 |
Author: guoguo |
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Description: 直流电机驱动芯片采用Ｌ２９８．支流电机驱动就是利用ＰＷＭ脉宽控制Ｌ２９８电流输出大小，从而达到控制电机的目的-Motor Driver IC using L298. Tributaries is the use of motor-driven PWM pulse width control L298 current output size, so as to achieve the purpose of the electrical control-DC motor driver chip L298. Tributary of the motor drive is using the PWM pulse width control L298 current output size, so as to achieve the purpose of controlling motor-Motor Driver IC using L298. Tributaries is the use of motor-driven PWM pulse width control L298 current output size, so as to achieve the purpose of the electrical control
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Size: 28672 |
Author: 姚振华 |
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Description: Ac to dc converter allow the conversion of the continouis input current or voltage to alternative ouput current or voltage
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Size: 8192 |
Author: mm |
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Description: pic16f877A单片机，通过设置pwm的占空比去控制恒流电路的恒流值。。步进为0.1A-pic16f877A microcontroller, by setting the duty cycle of pwm to control the constant current circuit of the constant current value. . Step is 0.1A
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Size: 116736 |
Author: liudaquan |
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Description: LED （发光二极管）作为一种新型光源，具有高效节能、绿色环保、使用寿命长等其
他光源无法比拟的优点，代表着未来照明技术的发展方向。本文设计了一种以AT89S51 单
片机为核心的家用多功能白光LED 台灯系统，采用PT4115 大功率LED 恒流驱动方案，可
实现对LED 台灯的PWM 多级调光控制；同时，系统兼有时间日历、温度检测、液晶显示、
声光闹钟等多项功能。本文详细给出系统的硬件与软件设计过程。实验证明，该多功能LED
台灯稳定高效，功能丰富，能够满足家庭实际应用的要求。-LED (light emitting diode) as a novel light source, with high efficiency energy saving, environmental protection, long life and other sources can not match the advantages of lighting technology represents the future direction of development. This paper presents a AT89S51 microcontroller to function as the core of the home white LED lamp system, using high-power LED constant current driver programs PT4115, LED lamp can be realized multi-level PWM dimming control the same time, the system both time calendar, temperature measurement, liquid crystal display, sound and light alarm clock and many other features. This article details the hardware and software design process. Experiments show that the multi-function LED lamp stable and efficient, feature-rich, practical applications to meet the requirements of the family.
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Size: 417792 |
Author: stephen king |
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Description: GT2440在Wince系统下的PWM驱动，不仅可以控制PWM输出的频率和占空，还可以读取PWM当前计数器值-GT2440 in Wince system PWM drive can not only control the PWM output frequency and duty cycle, you can also read the PWM current counter value
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Size: 20480 |
Author: 杨凯 |
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Description: 本文在介绍双闭环PWM直流调速系统原理基础上，根据系统的动、静态性能指标采用工程设计方法设计调节器参数，并运用Matlab的Simulink面向系统电气原理结构图的仿真方法，实现了转速电流双闭环PWM直流调速系统的建模与仿真。(This paper introduces the principle of double closed-loop PWM dc speed regulation system based on the adopted according to the static and dynamic performance index of system engineering design method to design controller parameter, and using the Simulink of Matlab system oriented electrical principle diagram of the simulation method, has realized the double closed loop speed current PWM dc speed regulation system of modeling and simulation.)
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Size: 463872 |
Author: 穿着帆布鞋也能走猫步 |
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