对卷接机组集中工艺风力除尘系统控制需求及工艺特点进行了研究,针对风力系统中压力和流量之间存在非线性与强耦合性的特点,以及控制系统中传统自动化科学技术(proportional plus integral plus derivative controller,PID)控制和现有...对卷接机组集中工艺风力除尘系统控制需求及工艺特点进行了研究,针对风力系统中压力和流量之间存在非线性与强耦合性的特点,以及控制系统中传统自动化科学技术(proportional plus integral plus derivative controller,PID)控制和现有的模糊PID控制自适应和鲁棒性较差、系统稳定性能不理想的问题,文中提出对角矩阵解耦方法将压力和流量进行解耦,利用改进粒子群算法(particle swarm optimization,PSO)优化参数的PID控制器对两者进行独立控制。通过仿真软件和可编程序逻辑控制器(programmable logic controller,PLC)程序对算法进行实现。位置阶跃响应实验粒子寻优实验结果表明:该方法在阶跃响应上升时间、最大超调量和响应速度上均有很好的优化效果,即时控制调整变频器频率以及阀门开度,使主风管压力波动在0.5%~1%内,流量波动控制在0.4%~0.8%内。展开更多
Massive dust of exhausted airflow easily diffuses to the industrial square while hoisting shaft is used as return shaft in the retrograde ventilation,and certainly there is a problem of dust scattering and noise excee...Massive dust of exhausted airflow easily diffuses to the industrial square while hoisting shaft is used as return shaft in the retrograde ventilation,and certainly there is a problem of dust scattering and noise exceeding standard. In order to solve the problem,the coupled technology of dedusting and noise reduction in airshaft outlet was investigated and the device with the function of Dedusting and noise Reduction(DR) was originated. The device is named as DR diffuser,which comprehensively utilizes mechanisms of inertia-gravity dedusting and absorption-insulation sound. The DR diffuser has been applied to Xingdong Coal Mine,and the testing results show that:a. the resistance of DR diffuser is lower than 60 Pa;b. the noise level reaches to 49.2 dB(A);c. the dedusting efficiency of above 50 μm is higher than 85 %;d. dynamic pressure recovered from the outlet of main fan is larger than 50 Pa. The above measured data illustrates that comprehensive benefit of the DR diffuser is good,and the device is worth of applying to engineering site.展开更多
文摘对卷接机组集中工艺风力除尘系统控制需求及工艺特点进行了研究,针对风力系统中压力和流量之间存在非线性与强耦合性的特点,以及控制系统中传统自动化科学技术(proportional plus integral plus derivative controller,PID)控制和现有的模糊PID控制自适应和鲁棒性较差、系统稳定性能不理想的问题,文中提出对角矩阵解耦方法将压力和流量进行解耦,利用改进粒子群算法(particle swarm optimization,PSO)优化参数的PID控制器对两者进行独立控制。通过仿真软件和可编程序逻辑控制器(programmable logic controller,PLC)程序对算法进行实现。位置阶跃响应实验粒子寻优实验结果表明:该方法在阶跃响应上升时间、最大超调量和响应速度上均有很好的优化效果,即时控制调整变频器频率以及阀门开度,使主风管压力波动在0.5%~1%内,流量波动控制在0.4%~0.8%内。
基金supported by the project of Hunan Province Science and Technology(No.2007FJ1012 )project of Scientific Research Fund of Hunan Provincial Education Department(No.09CY014)Doctoral Fund of HNUST
文摘Massive dust of exhausted airflow easily diffuses to the industrial square while hoisting shaft is used as return shaft in the retrograde ventilation,and certainly there is a problem of dust scattering and noise exceeding standard. In order to solve the problem,the coupled technology of dedusting and noise reduction in airshaft outlet was investigated and the device with the function of Dedusting and noise Reduction(DR) was originated. The device is named as DR diffuser,which comprehensively utilizes mechanisms of inertia-gravity dedusting and absorption-insulation sound. The DR diffuser has been applied to Xingdong Coal Mine,and the testing results show that:a. the resistance of DR diffuser is lower than 60 Pa;b. the noise level reaches to 49.2 dB(A);c. the dedusting efficiency of above 50 μm is higher than 85 %;d. dynamic pressure recovered from the outlet of main fan is larger than 50 Pa. The above measured data illustrates that comprehensive benefit of the DR diffuser is good,and the device is worth of applying to engineering site.
