bcd码 meaning in Chinese
binary-coded decimal
Examples
- Bcd and ascii are popular computer codes
Bcd码和ascii码都是流行的计算机编码。 - Abstract : the paper presents the method with the encoder and decoder instructions , with the switch of bcd in possession of six input points to realize the externally setting up in the device parameter in plc of multibit data
文摘:本文提出应用数据编码指令和数据译码指令，用一位bcd码开关，占用六个输入点，实现多位数的plc器件参数的外部设定方法。 - Each unit is extracted from the circuit , and is analyzed detailedly in framework , configuration and design approach . the instruction system of c9821 is unscrambled and then the instruction decode algorithm are obtained . the complete program of c9821 including basic arithmetic and root square operation is realized
在软件方面，破译了c9821的指令系统，分析了指令译码电路的设计技术，分析了计算器内bcd码的四则运算及开方运算算法，得到了实现c9821全部功能的程序，掌握了该计算器的程序设计方法。 - Comparing and analyzing the synchronous control strategy , which brings up the new method to control the double un - symmetry jars proceed synchronously with the combination of proportional valve and servo valve , which forms closed loop control ; basing on the above methods , models are made to get mathematics models of position control system and to analyze system model theoretically by using pid controller , we can realize regulating parameters , minimizing synchronous errors and enhancing the dynamic performances ; the simulink tool box in matlab software is used to imitate the system according to the model , which not only makes the result visual and easy to adjust the parameters in interactive way but also lets us understand the effects of different parameters and optimizes the dynamic properties . the theory of plc control in dshp is discussed after advanced understanding of the system movements . hardware design and general regulation are given on the base of siemens company products s7 - 200 plc
本文根据大量的国内外文献，对研配液压机的工作原理及设计结构进行了简介；对位置同步的控制方法进行了比较分析，提出比例阀和伺服阀复合控制的闭环结构来对非对称双缸进行同步控制电液比例同步控制方案；在此基础上着重对比例阀控非对称缸建模，最后得到位置控制系统的总体数学模型，从理论上对同步系统动态特性进行了分析，并用pid控制器进行参数整定，减小双缸同步误差、提高系统的动态响应性能；其中控制性能的分析借助于matlab软件中的simulink工具箱，由已建立的数学模型形成仿真模型，得到可视化的仿真结果，从而利于交互方式下调整参数，了解不同的参数对系统的影响，优化同步系统的动态性能；在深入了解系统的动作特性后，对plc控制研配液压机的原理进行了探讨，针对siemens公司s7 ? 200型plc给出了硬件设计的总体规划，编制出研配液压机动作控制程序，在编程中着重研究位移传感器与plc的通讯、双缸同步运行的pid控制在plc上的实现及bcd码拨盘输入程序的植入问题。