single mass system

This paper analyzes the nonlinear vibration characteristics and stability of a symmetrical rotor of single mass supported on multi-wedge bearings, and studies the cause and danger of the semi-frequency vibration, which may occur between the first critical speed and the stability threshold speed of the system.

本文分析了多油楔轴承支承的单质量对称转子系统的非线性振动和稳定特性，研究了临界转速与失稳转速之间半频振动产生原因及其危害性。

The subject analyzes the status quo of transport packaging test technology at home and abroad, and designs the controller of data record system for transport packaging based on single chip microcomputer. The system has the peculiarity of mass-storage, low power and low costs.

本课题对运输包装测试现状进行了分析，设计了一款基于单片机的运输包装数据采集系统，它具有大容量、低功耗、低成本等特点。

The single chip microcomputer mass storage system in low power ullage based on flash memory disk

基于U盘的单片机低功耗海量存储系统