基于VHDL的三层电梯控制器设计_vhdl_VHDL/FPGA/Verilog_嵌入式/单片机/硬件编程下载-pudn.com

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/626d16977b37011214cbd11b/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/626d16977b37011214cbd11b/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">唐山学院课程设计</div><div class="t m0 x2 h4 y3 ff2 fs1 fc0 sc1 ls0 ws0"><span class="ff1">引言</span></div><div class="t m0 x3 h3 y4 ff1 fs0 fc0 sc1 ls0 ws0">近几年来，我国的电梯生产技术得到了迅速发展。一些电梯厂也在不断改进设计，</div><div class="t m0 x4 h3 y5 ff1 fs0 fc0 sc1 ls0 ws0">修改工艺更新换代生产更新型的电梯。电梯主要分为控制系统与机械系统两大部分，随</div><div class="t m0 x4 h3 y6 ff1 fs0 fc0 sc1 ls0 ws0">着自动控制理论与微电子技术的发展，电梯的拖动方式与控制手段均发生了很大的变化</div><div class="t m0 x4 h3 y7 ff1 fs0 fc0 sc1 ls0 ws0">交流调速是当前电梯拖动的主要发展方向。目前电梯控制系统主要有三种控制方式：继</div><div class="t m0 x4 h3 y8 ff1 fs0 fc0 sc1 ls0 ws0">电器控制系统、<span class="ff2"></span>控制系统、微机控制系统</div><div class="t m0 x5 h5 y9 ff2 fs2 fc0 sc1 ls0 ws0"></div><div class="t m0 x6 h3 y8 ff1 fs0 fc0 sc1 ls0 ws0">。<span class="ff2"></span>控制系统由于运行</div><div class="t m0 x4 h3 ya ff1 fs0 fc0 sc1 ls0 ws0">可靠性高，使用维修方便，抗干扰性强，设计和调试较短的优点，倍受人们重视，已成</div><div class="t m0 x4 h3 yb ff1 fs0 fc0 sc1 ls0 ws0">为目前在电梯控制系统中使用最多的控制方式，目前也广泛用于传统继电器控制系统的</div><div class="t m0 x4 h3 yc ff1 fs0 fc0 sc1 ls0 ws0">技术。</div><div class="t m0 x3 h3 yd ff1 fs0 fc0 sc1 ls0 ws0">电<span class="_ _0"></span>梯作<span class="_ _0"></span>为<span class="_ _0"></span>高<span class="_ _0"></span>层<span class="_ _0"></span>建<span class="_ _0"></span>筑物<span class="_ _0"></span>的<span class="_ _0"></span>重<span class="_ _0"></span>要<span class="_ _0"></span>交<span class="_ _0"></span>通工<span class="_ _0"></span>具<span class="_ _0"></span>与<span class="_ _0"></span>人<span class="_ _0"></span>们<span class="_ _0"></span>的工<span class="_ _0"></span>作<span class="_ _0"></span>和<span class="_ _0"></span>生<span class="_ _0"></span>活<span class="_ _0"></span>日益<span class="_ _0"></span>紧<span class="_ _0"></span>密<span class="_ _0"></span>联<span class="_ _0"></span>系<span class="_ _0"></span>。<span class="_ _1"> </span><span class="ff2"><span class="_ _0"></span><span class="_ _0"></span><span class="_ _0"></span></span></div><div class="t m0 x4 h3 ye ff2 fs0 fc0 sc1 ls0 ws0"><span class="ff1">作为新一代工业控制器，以其高可靠性和技术先进性，在电梯控制中得到广泛应用</span></div><div class="t m0 x4 h3 yf ff1 fs0 fc0 sc1 ls0 ws0">从而使电梯由传统的继电器控制方式发展为计算机控制的一个重要方向，成为当期电梯</div><div class="t m0 x4 h3 y10 ff1 fs0 fc0 sc1 ls0 ws0">控制和技术改造的热点之一。</div><div class="t m0 x3 h3 y11 ff2 fs0 fc0 sc1 ls0 ws0"><span class="ff1">是一种专门从事逻辑控制的微型计算机系统。由于</span><span class="ff1">具有性</span></div><div class="t m0 x4 h3 y12 ff1 fs0 fc0 sc1 ls0 ws0">能稳定、抗干扰能力强、设计配置灵活等特点。因此在工业控制方面得到了广泛应用。</div><div class="t m0 x4 h3 y13 ff1 fs0 fc0 sc1 ls0 ws0">自<span class="ff2"></span>年代后期<span class="ff2"></span>引入我国电梯行业以来，<span class="ff2"></span>芯片及其开发系统问世不久，</div><div class="t m0 x4 h3 y14 ff1 fs0 fc0 sc1 ls0 ws0">就受到世界范围内电子工程设计人员的广泛关注和普遍欢迎。由<span class="ff2"></span>组成的电梯</div><div class="t m0 x4 h3 y15 ff1 fs0 fc0 sc1 ls0 ws0">控制系统被许多电梯制造厂家普遍采用。并形成了一系列的定型产品。在继电器系统的</div><div class="t m0 x4 h3 y16 ff1 fs0 fc0 sc1 ls0 ws0">改造工程中，<span class="ff2"></span>系统一直是主流控制系统。</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div> </body> </html>