碼 Ⅰ名詞(表示數(shù)目的符號或用具) a sign or object indicating number; code 數(shù)碼 numeral; number; amount; 價碼 marked price; 砝碼 weightⅡ量詞1.(指一件事或一類的事) 一碼事 the same thing; 兩碼事 two different things2.(英美制長度單位) yard (yd.)Ⅲ動詞[口語] (堆疊) pile up ; stack 碼起石頭 pile up stones
Bcd and ascii are popular computer codes Bcd碼和ascii碼都是流行的計算機編碼。
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:本文提出應(yīng)用數(shù)據(jù)編碼指令和數(shù)據(jù)譯碼指令,用一位bcd碼開關(guān),占用六個輸入點,實現(xiàn)多位數(shù)的plc器件參數(shù)的外部設(shè)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 在軟件方面,破譯了c9821的指令系統(tǒng),分析了指令譯碼電路的設(shè)計技術(shù),分析了計算器內(nèi)bcd碼的四則運算及開方運算算法,得到了實現(xiàn)c9821全部功能的程序,掌握了該計算器的程序設(shè)計方法。
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 本文根據(jù)大量的國內(nèi)外文獻,對研配液壓機的工作原理及設(shè)計結(jié)構(gòu)進行了簡介;對位置同步的控制方法進行了比較分析,提出比例閥和伺服閥復(fù)合控制的閉環(huán)結(jié)構(gòu)來對非對稱雙缸進行同步控制電液比例同步控制方案;在此基礎(chǔ)上著重對比例閥控非對稱缸建模,最后得到位置控制系統(tǒng)的總體數(shù)學(xué)模型,從理論上對同步系統(tǒng)動態(tài)特性進行了分析,并用pid控制器進行參數(shù)整定,減小雙缸同步誤差、提高系統(tǒng)的動態(tài)響應(yīng)性能;其中控制性能的分析借助于matlab軟件中的simulink工具箱,由已建立的數(shù)學(xué)模型形成仿真模型,得到可視化的仿真結(jié)果,從而利于交互方式下調(diào)整參數(shù),了解不同的參數(shù)對系統(tǒng)的影響,優(yōu)化同步系統(tǒng)的動態(tài)性能;在深入了解系統(tǒng)的動作特性后,對plc控制研配液壓機的原理進行了探討,針對siemens公司s7 ? 200型plc給出了硬件設(shè)計的總體規(guī)劃,編制出研配液壓機動作控制程序,在編程中著重研究位移傳感器與plc的通訊、雙缸同步運行的pid控制在plc上的實現(xiàn)及bcd碼撥盤輸入程序的植入問題。