渗碳炉温度和碳势在线测控系统

摘要：热处理过程控制系统，采用单片机技术解决了传统热电偶温度变送器线性化的非线性残余误差，利用V/F变换器构成的A/D转换器克服了环境干扰所引起的疏失误差，采用数据融合方法，纠正了测量过程中的观测误差，实现了温度和碳势的**测量。采用智能控制算法，解决了PID控制器调节时间长、超调量大的弊端，实现了被控参数快速跟踪给定值的**控制。  Measurement　and　Control　System　of　Carbonpenetrated　Furnace
for　Temperature　and　Carbonsituation　Precise

QI　Zhi-cai 1，GAI　Shuang 2，LI　Xi-lin 2，TIAN　Bao-feng 2

（1.Jilin　Architectural　and　Civil　Engineering　Institute，Deparunent　of　Electronic　and　Information　Engineering，Changchun　130021，China；2.Jilin　University，Communication　College，Changchun　130025，China）

Abstract：Discussed　the　process　control　system　of　heattreatment.It　proposed　MCU　technique　to　solve　the　nonlinear　remain　error　caused　by　traditional　thermocouple　linear，and　overcomed　the　careless　error　caused　by　circumstance　interference　by　using　A/D　converter　composed　by　V/F　converter，and　rectified　observation　error　during　the　measure　process，and　also　realized　the　precise　measure　of　temperature　and　carbonsituation.It　used　intelligent　control　algorithm　to　solve　the　abuse　of　overlong　time　and　overadjustment　of　PID　controller，to　realize　the　precise　control　of　the　parameters　be　measured　which　running　very　fast　after　the　set　values.The　System　worked　well　and　improved　the　heattreatment　quality　of　product.

Key　Words：Carbonpenetrated；Temperature　Sensor；Error；MCU