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针对飞行器半实物仿真试验中1553B接口伺服系统的频率特性不能通过1250频率响应分析仪进行测试的问题,提出了仿真专用频率特性测试仪的设计方案。该方案采用计算机采集加软件处理的虚拟仪器思想,硬件基于仿真试验系统已有条件,软件采用Win32+RTX设计模式,处理算法使用正弦扫描法。搭建测试验证环境对测试准确性进行了验证,测试验证和实际应用表明其测试结果具有较高精度,能够满足实际使用要求。
Aiming at the problem that the frequency characteristics of 1553B interface servo system can not be tested by 1250 frequency response analyzer in the semi-physical simulation test of aircraft, the design scheme of simulation dedicated frequency characteristic tester is proposed. The program uses computer acquisition plus software processing virtual instrument ideas, hardware based on simulation test system has the conditions, the software uses Win32 RTX design pattern, the processing algorithm using the sine scan method. The test verification environment is set up to verify the test accuracy. The test verification and practical application show that the test results have higher accuracy and can meet the actual requirements.