超低烟尘等速采样控制系统研究
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摘要
针对目前抽取式超低烟尘检测仪的等速采样系统,设计了基于PID的闭环等速控制系统;采用静压平衡法,以stm32为主控器,微差压传感器为检测器,步进电机及针阀为执行器,通过控制射流器的流量,从而实现了闭环PID自动等速采样系统;实验数据表明,该自动等速采样系统完全符合目前对超低烟尘设备测量的要求,等速效果良好,误差低于8%;并介绍了系统的组成及软硬件设计。
Aiming at the constant speed sampling system of ultra-low dust detector, a closed-loop constant-speed control system based on PID is designed. The static pressure balance method is adopted; stm32 as main controller and micro differential pressure sensor as detector; the motor and needle valve are actuators. By controlling the flow of the ejector indirectly, the closed-loop PID automatic isokinetic sampling system is realized. The experimental data show that the automatic isokinetic sampling system fully meets the current requirements of ultra-low smoke equipment measurement, equal speed effect is good, the error is less than 8%; and the system's composition and hardware and software design are introduced.
Aiming at the constant speed sampling system of ultra-low dust detector, a closed-loop constant-speed control system based on PID is designed. The static pressure balance method is adopted; stm32 as main controller and micro differential pressure sensor as detector; the motor and needle valve are actuators. By controlling the flow of the ejector indirectly, the closed-loop PID automatic isokinetic sampling system is realized. The experimental data show that the automatic isokinetic sampling system fully meets the current requirements of ultra-low smoke equipment measurement, equal speed effect is good, the error is less than 8%; and the system's composition and hardware and software design are introduced.
引文
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[4]暴翔,何小刚.基于模糊PID控制器的等速采样系统[J].煤炭技术,2017(6):273-275.
[5]陈飒,时晓曼.烟尘采样器测量结果的不确定度评估[J].化工管理,2017(20):188.
[6]程志彪.基于称重法的烟尘浓度在线监测系统的工程设计及实现[D].太原理工大学,2017.
[7]常倩云,杨正大,郑成航,等.高湿烟气中超低浓度细颗粒物测试方法研究[J].中国环境科学,2017,37(7):2450-2459.
[8]张国栋,祁瑞敏.无刷直流电机模糊PID控制系统设计与仿真[J].煤矿机械,2018,39(1):13-15.
[9]陈文英,陈广言.静压平衡等速采样技术在转炉煤气测尘的应用[J].煤气与热力,2002,22(3):217-219.
[10]Prata S.C++primer plus[M].SAMS publishing,2002.
[11]Jeon H K,Kim H R,Choi J M,et al.High speed serial interface for mobile LCD driver IC[C]//2008 IEEE International Symposium on Circuits and Systems.IEEE,2008:157-160.
[12]Waite M,Prata S,Martin D.C primer plus[M].Sams,1987.
[13]Prata S.C++primer plus[M].SAMS publishing,2002.
[14]固定污染源烟气排放连续监测技术要求及检测方法,HJ76-2017.
[15]固定污染源连续排放检测技术规范,HJ 75-2017.
[16]烟尘采样机技术条件,HJT 48-1999.
[2]刘慧博,王静,吴彦合.无刷直流电机模糊自适应PID控制研究与仿真[J].控制工程,2014,21(4):583-587.
[3]冉华军,李健,牟书丹.基于模糊自适应PID控制的直流电机调速系统[J].通信电源技术,2017,34(1):23-25.
[4]暴翔,何小刚.基于模糊PID控制器的等速采样系统[J].煤炭技术,2017(6):273-275.
[5]陈飒,时晓曼.烟尘采样器测量结果的不确定度评估[J].化工管理,2017(20):188.
[6]程志彪.基于称重法的烟尘浓度在线监测系统的工程设计及实现[D].太原理工大学,2017.
[7]常倩云,杨正大,郑成航,等.高湿烟气中超低浓度细颗粒物测试方法研究[J].中国环境科学,2017,37(7):2450-2459.
[8]张国栋,祁瑞敏.无刷直流电机模糊PID控制系统设计与仿真[J].煤矿机械,2018,39(1):13-15.
[9]陈文英,陈广言.静压平衡等速采样技术在转炉煤气测尘的应用[J].煤气与热力,2002,22(3):217-219.
[10]Prata S.C++primer plus[M].SAMS publishing,2002.
[11]Jeon H K,Kim H R,Choi J M,et al.High speed serial interface for mobile LCD driver IC[C]//2008 IEEE International Symposium on Circuits and Systems.IEEE,2008:157-160.
[12]Waite M,Prata S,Martin D.C primer plus[M].Sams,1987.
[13]Prata S.C++primer plus[M].SAMS publishing,2002.
[14]固定污染源烟气排放连续监测技术要求及检测方法,HJ76-2017.
[15]固定污染源连续排放检测技术规范,HJ 75-2017.
[16]烟尘采样机技术条件,HJT 48-1999.