基于PXI 总线的伺服机构测试系统

针对现有测试系统可扩展性差且无法准确获知伺服机构健康状态的问题,以导弹伺服机构测试系统研制为背景,提出一种基于PXI总线和虚拟仪器的自动化测试方案.从系统总体设计出发,详细阐述测试系统的软、硬件设计,并利用虚拟仪器和PXI总线仪器,搭建了具有高可靠性、便捷性和实用性的伺服机构测试平台,最后提出基于模糊层次分析的数据融合方法,对各项测试指标隶属度进行融合,进而得到伺服机构的健康状态等级.实验结果表明:该系统能够较好地实现各项功能,并具有一定的可移植性和扩展性,能够实现不同伺服机构的测试要求,为装备测试系统开发提供了一定借鉴价值,对长期贮存装备的维护与保养具有十分重要的意义.

Servo Mechanism Test System Based on PXI Bus

Existing test system has poor scalability, with an inability to obtain the health status of servo mechanism. Taking the development of missile servo test system as background, this paper proposes an automatic test scheme based on PXI bus and virtual instrument. Firstly, from the collectivity design of the test system, this paper expounds the software and hardware design. Secondly, based on PXI bus and virtual instrument, a test platform of servo mechanism with high reliability, convenience and practicability is constructed. Finally, a data fusion method based on fuzzy analytic hierarchy process is introduced to fuse the membership degree of each test index, and then get the health state level of the servo mechanism. Experimental results show that the system can better achieve the function, and has certain portability and scalability. It can meet the test requirement of different servo mechanism. It provides certain reference value for equipment test system development, and has very important significance for maintenance of long-term storage equipment.