mlr1

Essential MATLAB for Engineers and Scientists

用C语言编写的在Simulink环境下对转速可调永磁直流电机进行数值仿真的S函数源代码。该仿真源代码的特点是：能够仿真目前广泛应用的H桥驱动PWM调制调速永磁直流电机。将功率器件H桥与电机本体的数学模型完整的结合到一起。执行效率很高，仿真结果与实验结果非常相近。(C language in the Simulink environment for adjustable speed permanent magnet DC motor simulation S-function source code. The simulation source code features : simulation can be widely applied to the H-bridge PWM drive permanent magnet DC motor speed control. Will power devices H-bridge and motor Ontology integrity of a mathematical model combining together. High efficiency in the implementation of simulation results and experimental results are very similar.)

dick wempdick wempdick wempdick wemp

The distribution network has characteristics different from the transmission system. Distribution networks are commonly 1. three-phase unbalanced 2. radial with sometimes weakly meshed topology 3. with high resistance to reactance (r/x) rations here, an equivalent current injection method is used in rectangular coordinates to analyse the given radial distribution system. The FDLF method uses the NR-algorithm, with a constant Jacobian matrix. This matrix is further decoupled into two identical sub-Jacobian matrices.

GUI 是一种结合计算机科学、美学、心理学、行为学，及各商业领域需求分析的人机系统工程，强调人—机—环境三者作为一个系统进行总体设计。(GUI is a combination of computer science, aesthetics, psychology, behavioral science, and the commercial areas of human-computer systems engineering requirements analysis, emphasizing the human- machine- environment as a system of three overall design.)

在信号处理中，信号发射时，信号通过载波，调制，以电磁波的形式发射出来 在接收端，射频信号通过天线接收，超外差式等方式进行处理，变频到中频 然后通过数字技术对中频信号进行处理，此时的中频信号采样率很高，多达几十兆赫 而要解调出来的信号很小，此时就要经过滤波来得到我们需要的信号 如果直接设计滤波器，阶数会非常庞大，软件，硬件设备都承受不了 因此，一般常用的技术是进行下变频处理，其主要技术就是通过抽取滤波进行下变频 常用的滤波器就是CIC抽取, 希望可以帮助一些坛友解决基本的问题。 (In signal processing, signal emission, signal through the carrier, in the form of electromagnetic wave modulation, launched In the receiver, rf signals through the antenna, specialized superheterodyne type means such as processing, the frequency conversion to intermediate frequency Then through digital technology of intermediate frequency signal processing, at this time of intermediate frequency signal sampling rate is very high, as many as several decades MHZ But the signal demodulation out is very small, at this time would be passing filter to get what we need signal If design directly filter, order number be colossal, software, hardware equipment all suffer Therefore, the technology is usually used for down-transducer processing, its main technical is by extracting filtering down-transducer Commonly used filter is CIC extraction, the hope can help some friends solve basic problems of the altar.)

说明：  关于Matlab的数字仿真及应用，用于信号分析等 (On the Matlab simulation and the number of applications for signal analysis, etc.)

说明：  安德森经典著作：最优滤波，学习最优滤波的基础教材(Anderson classics: the optimal filter, optimal filter based learning materials)

Tous les fabricants de variateurs de vitesse, qu’ils soient industriels ou bien distributeurs de matériel à usage pédagogique proposent des variateurs pour machine asynchrone. Historiquement, sont apparus sur le marché des variateurs dits à « U/f = constante » et plus récemment les variateurs à contrô le vectoriel de flux avec ou sans capteur.

在这里，被控量是小车转角，向上回朔是舵机的转角，再向上就是用来控制舵机的PWM波的占空比，也就是说你的被控量是PWM波的占空比；一旦你的 舵机安装方式确定后，小车前轮的左右极限转角也就定死了，也就是说你的PWM波的占空比的变化范围也就确定了，即被控量的论域确定了，以我的为 例是1225到1725，显然S12的模糊机无法直接输出这么大的数值，在此对于输出量的隶属度函数我选用的是单值的，对应9个等级（0-8），即对应9个 PWM占空比值，即对应9个角度值。模糊语言等级、输出等级以及实际PWM占空比值的对应关系如下。 (www.hellodsp.com) 详细出处参考：http://www.hellodsp.com/bbs/viewthread.php?tid=688 )