基于VXI总线的多通道频率响应测量与系统建模  

Multi-Channel Frequency Response Measurement and Establishing System Model Based on VXI Bus

作　　者：支超有[1] 李振水[1] 李霞[1] 

机构地区：[1]西安飞机设计研究所,陕西西安710089

出　　处：《测控技术》2004年第1期11-13,共3页Measurement & Control Technology

摘　　要：使用VXI总线任意波形发生器模块和数字仪模块组成的虚拟仪器测试系统 ,实现了测量过程扫频正弦信号的自动产生和自动积分 ,完成频率响应测量。讨论了由频率响应数据拟合传递函数建立系统数学模型的方法。说明了在飞机飞行操纵控制系统试验中的成功应用 ,提高了试验效率 ,缩短了试验周期。The sweep sine waveform which is automatically produced and integraed in frequency response measurement is realized for virtual instrument measurement and test system which consists of arbitrary waveform generator module and digitalizer module based on VXI bus.The method of establishing system mathematics module using frequency response data is discussed.The virtual instrument system is applied in an aircraft mechanical control system test successfully.The test results show that the system improved test efficiency and shorted test period obviously.

关 键 词：VXI总线 虚拟仪器 任意波形发生器 数字化仪模块 自动积分 频率响应测量 飞机 飞行操纵控制系统 

分 类 号：V233.7[航空宇航科学与技术—航空宇航推进理论与工程] TP336[自动化与计算机技术—计算机系统结构]