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Description: 用S51单片机控制驱动芯片L298程序(C语言) 有六个端口,输入端口分别为P1.0,P1.1,P1.2,P1.3,P1.4,P1.5.
六个输出端口分别为P0.0,P0.1,P0.2,P0.3,P2.4,P2.5.
其中P0.0,P0.2,P2.5输出高低电平.P0.1,P0.3,P2.4输出PWM脉冲信号.
程序要求 只要P1.0-P1.5中任一个为"1",则P0.0,P0.2输出高电平
当P1.2或P1.3为"1",P0.1,P0.3输出占空比相同的PWM信号-With S51 SCM procedures L298 driver chip (C language) there are six ports, input ports, respectively, for P1.0, P1.1, P1.2, P1.3, P1.4, P1.5. Six output ports were P0.0, P0.1, P0.2, P0.3, P2.4, P2.5. which P0.0, P0.2, P2.5 output high-low. P0.1, P0. 3, P2.4 output PWM pulse signal. procedural requirements P1.0-P1.5 as long as any one to 1 , the P0.0, P0.2 output high when the P1.2 or P1.3 to 1 , P0.1, P0.3 same PWM duty cycle output signal
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Size: 2048 |
Author: zhaoge |
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Description: Driver.ddb
Mydot.ddb
Wait.ddb
单片机.ddb
电源指示灯.ddb
仿真示例电路.ddb
脉宽调制信号控制电路.ddb
图3-5.ddb
图3-6.ddb
稳压电源电路.ddb
修改74LS373.ddb-Driver.ddbMydot.ddbWait.ddb Singlechip. Ddb power indicator. Ddb circuit simulation examples. Ddb PWM signal control circuit. Ddb Figure 3-5.ddb Figure 3-6.ddb regulated power supply circuit. Ddb modify 74LS373 . ddb
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Size: 2396160 |
Author: 俞伯阳 |
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Description: 该论文《基于LabVIEW的热电空调温度模糊控制系统的研究》是优秀硕士学位论文。
主要内容如下: 1.阐述了热电制冷的基本原理,并对热电制冷的热力学特性和极限工况进行了分析与计算。 2.根据热电空调的温度控制要求选取了适用于系统的模糊控制规则,并在LabVIEW环境下完成了对模糊控制器的设计并进行了输入输出性能测试。 3.在研究信号采集和调理技术的基础上,结合信号调理设备实现了在LabVIEW环境下热电空调温度监测子系统的软件设计。 4.完成了热电空调供电子系统的PWM直流斩波调压电路的设计及LabVIEW环境下硬件电路控制的程序设计 利用PSpice对PWM直流斩波调压电路进行了硬件...
-The thesis, "LabVIEW-based thermoelectric air-conditioning temperature fuzzy control system" is the outstanding master s thesis.
Are as follows: 1. Expounded the basic principles of thermoelectric refrigeration, and thermoelectric refrigeration thermodynamic properties and the limits of operating conditions are analyzed and calculated. 2. In accordance with thermoelectric temperature control air-conditioning requirements for the system selected for the fuzzy control rules, and LabVIEW environment to achieve the design of fuzzy controller and the input and output performance test. 3. In signal acquisition and conditioning techniques, based on the combination of signal conditioning equipment in the LabVIEW environment thermoelectric air-conditioning temperature monitoring subsystem software design. 4. Achieve a thermoelectric air-conditioning power supply subsystem PWM DC chopper regulator circuit design and LabVIEW environment to control the hardware circuit desig
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Size: 7842816 |
Author: 若水 |
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Description: PWM 转模拟信号
拨码开关控制 PWM 的占空比为16级，分别对应电压3.3伏16分之一的倍数-DIP switch to an analog signal PWM switch control PWM duty cycle is 16, corresponding to voltage of 3.3 volts, one of the 16 sub-multiples
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Size: 140288 |
Author: panda |
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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....
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Size: 61440 |
Author: weiwen |
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Description: 为了产生一个PWM信号，DSP的定时器定时周期应该和PWM的周期相等。另外需要对DSP的EVA/EVB模块中的比较单元的比较寄存器设定数值，这样该数值一直与定时器的计数器值相比较，按照一定的比较方式，PWM即产生跳变。通过此种方式，DSP的PWM管脚就会产生一个宽度与比较寄存器数值成比例的脉冲信号。在定时器重复定时的过程中就产生了PWM信号。
使用DSP比较单元产生PWM波形不需要硬件连接图，只需对DPS的相关寄存器进行配置就可以在输出端得到相应的PWM波形，其具体操作过程如下：
1设置比较方式控制寄存器ACTRx
2如有必要，使能死区功能，配置死区控制寄存器DBTCONx
3对比较寄存器CMPRx赋值
4设置定时器寄存器T1CON（T3CON）并启动定时
5通过更新CMPRx的数值改变PWM占空比的大小
-n order to generate a PWM signal, DSP timer timer and PWM cycle period should be equal. In addition the need for DSP s EVA/EVB module compare unit compare register setting values, so that the value and the timer counter value has been compared by some comparisons, PWM that generate transition. In this way, DSP s PWM pin will generate a value of compare register width is proportional to the pulse signal. Repeated regularly in the course of the timer to generate a PWM signal.
Compared using the DSP hardware unit generates PWM waveforms do not need connection diagram, only the relevant registers of the DPS can be configured to obtain the corresponding PWM output waveform, the specific operation is as follows:
Comparison of mode control register 1 set ACTRx
2 If necessary, enable the dead zone function, the configuration control register DBTCONx dead
3 on the comparison registers CMPRx assignment
4 Set the timer register T1CON (T3CON) and start the timer
5, the value changes by upd
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Size: 4096 |
Author: zhangchao |
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Description: 正点原子开发板上的PWM信号输出工程，使用库函数实现，版本为3.1，可也升级到新版本，好用，推荐-Punctual atomic PWM signal engineering development board, the realization of the use of library functions, version 3.1 can upgrade to the new version, easy to use, it is recommended
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Size: 313344 |
Author: bms |
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Description: 循迹小车测试程序：
1.采用定时器模拟PWM控制电机信号
2.循迹平稳
3.三个红外对射传感器
互联设计淘宝店 http://inter-design.taobao.com/
-Car tracking test procedure:
The 1uses the timer motor control PWM signal simulation
2tracking smooth
3three infrared sensor
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Size: 9216 |
Author: 朱欢武 |
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Description: 调节舵机使之转动5个角度 0 45 90 135 180 PWM信号周期为20ms。程序流程是：开机时舵机角度自动转为0度，按下 P3.7则转到45度，以后就根据两个按键的按下而转动。控制高电平的持续时间即可控制舵机停止制动的角度，0.5ms-0度 1-45 1.5-90 2-135 2.5-180 。-Adjust the steering gear so that rotation angle of 5 0 45 90 135 180 PWM signal period is 20ms. The program flow is: the power steering gear angle automatically be converted to 0 degrees, press the P3.7 go to 45 degrees, after the rotation according to the press of two buttons. Control the duration of the high you can control the angle of the steering gear to stop braking, 0.5ms-0 1-45 1.5-90 2-135 2.5-180.
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Size: 1024 |
Author: 杨佳 |
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Description: STM32 输出8路0-20K独立可调频率脉冲，排除网上其他单纯通过比较输出模式输出PWM信号有死区（盲区：低频率无法输出区域）的问题，本代码0-5K误差为1,20K时，误差为33.3，用到的朋友可以看下。-The STM32 output 8-way 0-20K independently adjustable frequency pulses to exclude online other simply by the compare output mode output PWM signal dead zone (blind spot: the low frequency can not be output area), the code error for 1,20 K in 0-5K error of 33.3, friends used to look.
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Size: 5120 |
Author: adjlfjdlks |
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Description: 空间矢量脉宽调制(SV PWM ) 技术不仅具有
线性调制范围宽、输出谐波小和易于数字化实现
的特点, 而且比常规SPWM 高15 的直流电压利
用率[ 1～ 3 ] , 因而被广泛用于变频器、U PS 、无功补
偿器、有源电力滤波器和储能系统电力变换器等
领域. 对SV PWM 常规算法和快速算法进行分析,
并证明了二者的等效性. 同时, 利用MA TLABö
Sim u link 对在不同输入电压参考信号和不同零矢
量分配方式下的调制信号和逆变器输出电压和电
流波形进行了仿真分析.-Space Vector Pulse Width Modulation (SV PWM) technology not only has
Linear modulation range, the output harmonic small and easy to implement digital
Characteristics, and 15 higher than conventional SPWM DC voltage Lee
Utilization rate [1-3], which is widely used in the inverter, U PS, reactive power compensation
Compensation, active power filter and energy storage systems such as power converters
Fields. Algorithm for SV PWM routine and fast algorithm for analysis,
And prove the equivalence between the two while using the MA TLABö
Sim u link for the different input voltage reference signal and the different zero vector
Capacity allocation in the modulation signal and the inverter output voltage and current
Current waveform simulation analysis.
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Size: 1065984 |
Author: xray |
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Description: Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique that conforms the width of the pulse, formally the pulse duration, based on modulator signal information. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers,[1] the other being MPPT.
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Size: 19456 |
Author: Rajendra Meena |
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Description: 本软件实现光伏电池出来的低压直流电逆变成高压工频交流电，顺利把太阳能转换成的电能馈送到电网。本软件的主要功能大概分为五部分：1)配置MCU处理器的PWM模块（脉宽调制信号）为互补工作模式使两个反激变换器交替工作，实现交错反激工作模式；2)根据电网周期，在合适的时刻本软件驱动硬件电路，实现逆变，把直流电转换为50Hz、220V交流电；3)本软件具有无线监控功能，通过无线模块监测逆变器工作状态；4)本软件有串口调试功能，可以方便调试程序5)本软件有输出电压超压保护，输出电流过流保护，频率保护-The software implementation of photovoltaic cells out of the low-frequency high-voltage direct current reverse into alternating current, successfully converting solar energy into electrical energy fed into the grid. The main function of this software is probably divided into five parts: 1) Configure MCU processor PWM module (pulse width modulation signal) so that the two are complementary mode flyback converter alternately work to achieve staggered flyback mode 2) power cycle, at the appropriate time the software driver hardware circuit, inverter, the direct current is converted to 50Hz, 220V AC 3) The software has a wireless monitoring, monitoring of the inverter via a wireless module working condition 4) the software serial debugging features, you can easily debug the program 5) The software has an output voltage over-voltage protection, output overcurrent protection, frequency protection
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Size: 53248 |
Author: 小超 |
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Description: 基于飞思卡尔的S128单片机输出3路PWM信号的电机控制程序-S128 based on Freescale s microcontroller PWM signal output three-way motor control program
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Size: 294912 |
Author: 单手扶墙 |
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Description: program to generate a PWM signal using timer 3
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Size: 3603456 |
Author: paolo |
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Description: CCS3.3环境下，测试TMS320F28335的Eqep功能。利用PWM和GPIO分别产生正交编码信号和索引信号，闭环测试。-TMS320F28335 Eqep program test in CCS3.3 development environment.Quardature signal and index signal are generated by PWM and GPIO for test.
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Size: 788480 |
Author: ds |
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Description: pwm的实现
PWM的一个优点是从处理器到被控系统信号都是数字形式的，在进行数模转换。可将噪声影响降到最低(可以话跟电脑一样}。噪声只有在强到足以将逻辑1改变为逻辑0或将逻辑0改变为逻辑1时，也才能对数字信号产生影响。
对噪声抵抗能力的增强是PWM相对于模拟控制的另外一个优点，而且这也是在某些时候将PWM用于通信的主要原因。从模拟信号转向PWM可以极大地延长通信距离。在接收端，通过适当的RC或LC网络可以滤除调制高频方波并将信号还原为模拟形式。
PWM控制技术一直是变频技术的核心技术之一。1964年A.Schonung和H.stemmler首先提出把这项通讯技术应用到交流传动中，从此为交流传动的推广应用开辟了新的局面。-The realization of the PWM
An advantage of PWM signals the processor to be control system is digital form, in the d/a conversion.Can minimize noise effects (noise can words like computer}. Only in a logic 1 is strong enough to change to logic 0 or logic 0 for the logic 1, also can affect the digital signal.
To the noise resistance ability enhancement is PWM another advantage compared with the simulation control, and it s will be the main cause of PWM are used for communication in some time.From analog signal to the PWM can greatly extend the communication distance.At the receiving end, through proper RC or LC networks can filter out high frequency square wave modulation and signal to analog form.
PWM control technology has been one of the core technology of frequency conversion technology.1964 A.S chonung and H.s temmler first proposed the application of the communication technology to the ac drive, this has opened up a new situation for the application of ac drive.
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Size: 1024 |
Author: 王志方 |
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Description: PWM是一种对模拟信号电平进行数字编码的方法。3路PWM通过高分辨率计数器的使用，方波的占空比被调制用来对一个具体模拟信号的电平进行编码(PWM is an analog signal level for digital encoding method.3 road PWM through the use of high resolution counter, square wave duty ratio is modulated to encode a specific analog signal level)
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Size: 495616 |
Author: 认同感
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Description: 用定时器3输出四路PWM信号，可用于同时驱动四路灯的亮度调节(With the timer 3 output four way PWM signal, can be used to drive four street light brightness adjustment)
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Size: 2411520 |
Author: 梦工厂123
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Description: 通过单片机stm32f103rbt6来采集充电回路上的电流和电压，然后经过算法处理后输出相应的PWM信号来驱动开关管，从而控制BUCK电路实现对锂电池的闭环充电控制。(Through the MCU stm32f103rbt6 to collect the charging current and voltage loop, and then through the algorithm outputs the PWM signal corresponding to the driving switch to control the BUCK of lithium battery charging circuit closed-loop control.)
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Size: 367616 |
Author: laputa2112
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