基于Labview的高空模拟舱模拟特性研究

为模拟飞机在各种飞行状态下所处大气环境压力的变化,建立了基于虚拟仪器的高空模拟舱系统,以实现飞机座舱压力控制系统的性能测试。在分析高空模拟舱系统工作特性的基础上,采用Labview软件开发数字比例-积分-微分(Proportion-integration-differentation,PID)控制器,基于SCXI硬件系统构成的虚拟仪器测控平台,实现了高空模拟舱系统的压力控制。在高空模拟舱系统上进行了数字气动式座舱压力控制系统的性能试验,结果表明高空模拟舱系统能够准确模拟飞机的飞行状态,为座舱压力控制系统的性能测试提供良好的试验条件。

Performance Investigation of High Altitude Simulation Cabin Based on Labview

For the performance testing of cabin pressure control system (CPCS), a high-altitude simulation cabin (HASC) system based on the virtual instrument is established to simulate the atmospheric pressure which varies with aircraft flight states. On the basis of SCXI virtual instrument platform, a digital proportion-integration-differentation (PID) controller is developed in Labview to accomplish the HASC pressure control. The performance test of digital-pneumatic cabin pressure controlling system is carried out with the HASC system. The results show that the HASC system can accurately simulate the atmospheric pressure of flight states which is very important in CPCS performance testing.