基于MSP430的全箭模态试验信号通路控制器的研制  

Signal-Channels Controller for Modal Test of Launch Vehicle Based on MSP430 MCU

作　　者：邓哲[1] 龚靖傑 张玉玺 王家乐[1] 张梦妍[1] Deng Zhe;Gong Jingjie;Zhang Yuxi;Wang Jiale;Zhang Mengyan(Beijing Institute of Structure and Environment Engineering,Beijing 100076,China)

机构地区：[1]北京强度环境研究所,北京100076

出　　处：《计算机测量与控制》2020年第8期112-115,共4页Computer Measurement &Control

摘　　要：在全箭模态等试验控制系统中,为解决模态试验系统激振器通道数目与激励测量模块通道数量不一致,而导致在实验过程中,出现连接、更换通道连接线时,不仅耗时而且经常出错等问题,设计并实现了一种多路信号通道控制器,该信号通道控制器可以实现多达32路通道与32路通道的信号的任意连接和智能在线切换;配置连接的通道信号线间导通,未配置连接的通道之间成高阻抗状态;试验人员仅需将测量通道连接在输出端,将模态试验系统测量模块通道连接在输入端,就可以通过控制器液晶屏进行通道配置,实现输入、输出通道的任意连接和在线通道切换,切换时长不大于1s,输出和输入通道相位误差小于1ms,临近未使用的通道串扰幅值少于0.02V。In order to solve the problem of inconsistency between the number of channels of vibration exciter used in modal test system and the number of channels of excitation measurement module in modal test system,such as when people connecting and replacing channels between exciter and excitation measurement module,often need more time and got wrong connection,a signal channels controller is designed and implemented,which can achieve the arbitrary connection and online switching of channels up to 32 channels.The signal channels can be configured connected or unconnected.The unconnected channels are in high-impedance state.The tester only needs to connect the measuring channel to the output end and the measurement module channels of the modal test system to the input end.And then the tester can configured the channels through the LCD screen to realize the arbitrary connection of the input and output channels and online switching and the switching time is less than 1 s,the phase error between output and input channels is less than 1 ms,and the crosstalk amplitude of adjacent unused channels is less than 0.02 V.

关 键 词：模态试验 MSP430控制器 多路信号 在线切换 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]