基于C8051F040的高精度气压控制模态测试悬挂系统

High precision pneumatic control based on C8051F040 in modal testing suspension system

为解决在设计航天器的过程中对设备的物理参数进行精确测试等问题,将气动技术应用到模态测试装置设计中。针对模态装置中气动子系统性能的优劣直接影响其稳定性与超低频指标等情况,以提高气动控制系统性能为出发点,介绍了气动供气系统,设计了以C8051F040处理器为核心进行高精度气压控制的硬件接口电路和软件设计。实际实验结果表明,该气动控制系统运行可靠,具有操作方便、精度高和实时性好等特点,且具有较高的推广应用价值。

In order to solve the problems that it is required to carry out an accurate analysis of parameters in the process of the spacecraft design,the pneumatic technology was applied to design of modal testing suspention device.Aiming at the problems involved in the performance of pneumatic subsystem which directly affects the stability and ultralow frequency index of modal device,in order to improve the quality of the pneumatic control,pneumatic supply system was described,based on C8051F040 microprocessor as the key part in high precision pneumatic control,the hardware interface circuits and software design were designed and testified of the system.Experimental results show that the pneumatic system runs controller reliably,and features easy operation,high precision,excellent real-time,etc..It is wealth to be promoted into practical applications.