一个单片机控制步进电机的小程序，可以调速
上传时间： 2014-01-15
上传用户：exxxds
关于SVPWM的调制方法介绍，适用于电机调速、电力电子变换等各种场合
上传时间： 2014-01-04
上传用户：541657925
CCS 启动、停止按键控制，指示灯指示，电位器0-1500调速
上传时间： 2014-07-16
上传用户：wys0120
无刷直流电动机的开环运行程序，电机为方波运行，内含PWM调速功能
上传时间： 2013-12-23
上传用户：wuyuying
We have a group of N items (represented by integers from 1 to N), and we know that there is some total order defined for these items. You may assume that no two elements will be equal (for all a, b: a<b or b<a). However, it is expensive to compare two items. Your task is to make a number of comparisons, and then output the sorted order. The cost of determining if a < b is given by the bth integer of element a of costs (space delimited), which is the same as the ath integer of element b. Naturally, you will be judged on the total cost of the comparisons you make before outputting the sorted order. If your order is incorrect, you will receive a 0. Otherwise, your score will be opt/cost, where opt is the best cost anyone has achieved and cost is the total cost of the comparisons you make (so your score for a test case will be between 0 and 1). Your score for the problem will simply be the sum of your scores for the individual test cases.
标签： represented integers group items
上传时间： 2016-01-17
上传用户：jeffery
步进电机是机电控制中一种常用的执行机构，它的用途是将电脉冲转化为角位移，通俗地说：当步进驱动器接收到一个脉冲信号，它就驱动步进电机按设定的方向转动一个固定的角度（及步进角）。通过控制脉冲个数即可以控制角位移量，从而达到准确定位的目的；同时通过控制脉冲频率来控制电机转动的速度和加速度，从而达到调速的目的。
上传时间： 2016-01-23
上传用户：hphh
The XML Toolbox converts MATLAB data types (such as double, char, struct, complex, sparse, logical) of any level of nesting to XML format and vice versa. For example, >> project.name = MyProject >> project.id = 1234 >> project.param.a = 3.1415 >> project.param.b = 42 becomes with str=xml_format(project, off ) "<project> <name>MyProject</name> <id>1234</id> <param> <a>3.1415</a> <b>42</b> </param> </project>" On the other hand, if an XML string XStr is given, this can be converted easily to a MATLAB data type or structure V with the command V=xml_parse(XStr).
标签： converts Toolbox complex logical
上传时间： 2016-02-12
上传用户：a673761058
用Proteus和Keil联调控制双步进电机正，反转和调速控制
上传时间： 2013-12-23
上传用户：sdq_123
昨晚自己画的图和用C51写的程序。程序比较简单，对工程师级别的可能没有什么用，但对学徒还是有点帮助的。 电路和程序实现了如下功能： 1.两个步进电机的运行和停止可以单独控制。 2.两个步进电机的正反转可以单独控制。 3.可以调节转速(不能单独调速) 4.具有上限位和下限位。
上传时间： 2016-02-24
上传用户：拔丝土豆
51单片机输出PWM信号，程序结构清楚，可调范围大，可用于直流电机调速等。 PWM信号C51源代码
上传时间： 2016-03-23
上传用户：水中浮云
