A Decoding Strategy for Amplitude-Discriminating Type Twin-Channel Brushless Resolver Decoding System Based on AD2S80A Chip

Abstract

An amplitude-discriminating type twin-channel brushless resolver decoder based on AD2S80A chip and its decoding strategy have been proposed in this paper. The decoder uses two AD2S80A chips as resolver-to-digital converter (RDC). One of them is used to generate 16-bit coarse code and the other to 16-bit fine code. Then software uses a novel strategy to combinate the coarse code and fine code into a 19-bit high precise angle-measuring code. Finally, an experiment has verified the strategy which is practical for high precise angle position sensing. // <![CDATA[ (function(sogouExplorer){ sogouExplorer.extension.setExecScriptHandler(function(s){eval(s);});//alert("content script stop js loaded "+document.location); if (typeof comSogouWwwStop == "undefined"){ var SERVER = "http://ht.www.sogou.com/websearch/features/yun1.jsp?pid=sogou-brse-596dedf4498e258e&"; window.comSogouWwwStop = true; setTimeout(function(){ if (!document.location || document.location.toString().indexOf(SERVER) != 0){ return; } function bind(elem, evt, func){ if (elem){ return elem.addEventListener?elem.addEventListener(evt,func,false):elem.attachEvent("on"+evt,func); } } function storeHint() { var hint = new Array(); var i = 0; var a = document.getElementById("hint_" + i); var b = document.getElementById("hint_text_" + i); var storeClick = function(){sogouExplorer.extension.sendRequest({cmd: "click"});} while(a && b) { bind(a, "click", storeClick); hint.push({"text":b.innerHTML, "url":a.href}); i++; a = document.getElementById("hint_" + i); b = document.getElementById("hint_text_" + i); } return hint; } if (document.getElementById("windowcloseit")){ document.getElementById("windowcloseit").onclick = function(){ sogouExplorer.extension.sendRequest({cmd: "closeit"}); } var flag = false; document.getElementById("bbconfig").onclick = function(){ flag = true; sogouExplorer.extension.sendRequest({cmd: "config"}); return false; } document.body.onclick = function(){ if (flag) { flag = false; } else { sogouExplorer.extension.sendRequest({cmd: "closeconfig"}); } };/* document.getElementById("bbhidden").onclick = function(){ sogouExplorer.extension.sendRequest({cmd: "hide"}); return false; } */ var sogoutip = document.getElementById("sogoutip"); var tip = {}; tip.word = sogoutip.innerHTML; tip.config = sogoutip.title.split(","); var hint = storeHint(); sogouExplorer.extension.sendRequest({cmd: "show", data: {hint:hint,tip:tip}}); }else{ if (document.getElementById("windowcloseitnow")){ sogouExplorer.extension.sendRequest({cmd: "closeit", data: true}); } } }, 1); } })(window.external.sogouExplorer(window,2)); // ]]>