基于C8051 F920的超空泡通气系统压力控制研究

Research on Pressure Control of Supercavitating Ventilation System Based on C8051F920

为了形成精确可控的超空泡形态,在超空泡技术研究中,需要精确控制多路气体流量。提出了以压力直接控制,实现流量间接控制的通气系统控制方案,建立了通气系统的数学模型。提出了通气系统的控制算法,对压力控制环和阀芯开度控制环分别采用比例积分算法和比例算法实现控制压力的目的。以C8051F920单片机为控制器核心,采用压力传感器作为传感元件,调节阀为执行元件,设计出一套压力控制的硬件和软件系统。仿真结果表明,所设计的控制系统鲁棒性好,响应速度快。系统为水下航行体超空泡形态研究提供了可靠的试验平台。

In order to manipulate supercavitation sharp and simulate tail jet of vehicles, multiplex gas flow is controlled accurately on the research of artificial ventilation supercavitation of underwater vehicles. An overall ventilation control method is presented which directly controls pressure in order to control gas flow, and the mathematical model is established. The control algorithm of ventilation system is presented, which consists of pressure control loop and valve control loop. PI and P control algorithms are employed to control pressure. Tak- ing C8051 F920 as control core, pressure transmitter as sensor component and regulator as execute component, the hardware and software systems of pressure controller are designed. The simulation result indicates that the dynamic response of the control system is stable and the control quality performs well. The development of arti- ficial ventilation control system provides a reliable experiment platform for the study of supercavitation sharp.