微处理机
微處理機
미처리궤
MICROPROCESSORS
2015年
1期
76-78,83
,共4页
董克冰%曹勇全%张建国%程文进%景涛%杨成佳
董剋冰%曹勇全%張建國%程文進%景濤%楊成佳
동극빙%조용전%장건국%정문진%경도%양성가
经典 PID 控制%脉宽调制%温度控制%气体传感器
經典 PID 控製%脈寬調製%溫度控製%氣體傳感器
경전 PID 공제%맥관조제%온도공제%기체전감기
PID%PWM%Temperature control%Gas sensor
针对薄膜气体传感器敏感芯体的气体温度特性,设计了一种实用的脉宽恒温控制电路。采用经典 PID 控制模式,自适应调节加热功率,满足高温高湿的环境要求。样机器件全部采用有失效率指标的高等级质量国产元件,可靠性完全可估。样机对启动电流、最高温度等最坏情况做了特别设计,同时为了有效降低失效率,对有效工作模式做了规定以适合高可靠性、低风险的航天应用要求。实验数据表明氢气传感器控温电路精度可达0.15℃,可满足传感器精度要求。
針對薄膜氣體傳感器敏感芯體的氣體溫度特性,設計瞭一種實用的脈寬恆溫控製電路。採用經典 PID 控製模式,自適應調節加熱功率,滿足高溫高濕的環境要求。樣機器件全部採用有失效率指標的高等級質量國產元件,可靠性完全可估。樣機對啟動電流、最高溫度等最壞情況做瞭特彆設計,同時為瞭有效降低失效率,對有效工作模式做瞭規定以適閤高可靠性、低風險的航天應用要求。實驗數據錶明氫氣傳感器控溫電路精度可達0.15℃,可滿足傳感器精度要求。
침대박막기체전감기민감심체적기체온도특성,설계료일충실용적맥관항온공제전로。채용경전 PID 공제모식,자괄응조절가열공솔,만족고온고습적배경요구。양궤기건전부채용유실효솔지표적고등급질량국산원건,가고성완전가고。양궤대계동전류、최고온도등최배정황주료특별설계,동시위료유효강저실효솔,대유효공작모식주료규정이괄합고가고성、저풍험적항천응용요구。실험수거표명경기전감기공온전로정도가체0.15℃,가만족전감기정도요구。
A practical temperature control circuit is designed especially for gas sensor according to properties of the thin sensitive core films.The classical PID control mode is adapted to adjust the heating power and meet the environmental requirements of high temperature and high humidity.All domestic components have failure rate,so the reliability of the prototype can be estimated.The prototype is especially designed for the worst situations of starting current and maximum temperature.The prototype is also recommended for the normal work mode to reduce the failure rate.The experiments data show that the hydrogen sensor temperature control circuit precision can reach 0.1 5 degrees,which meets the requirement of the hydrogen sensor.