The lower - band spectrum caused by unbalancing rotor and eccentric error of primary axes is analysised firstly . the vibration of basic factors and its features caused by the basic member are discussed , such as turbo - propellers , planetary - reducer and bearings
2.
This paper firstly analyses the various reasons and dangers caused by unbalanced rotors according to information and experiments , after these , different balancing methods for different types of unbalancing rotors were discussed . on the basis of the theory that discussed above , the paper analyses different types methods of measuring especially wattmeter measuring system and character of signals of hard bearing dynamic balancing system and designs a hard - bearing microcomputer - based measuring system for different types of hard bearing dynamic balancing machines . using advanced technology both in hardware and software of the modern , this system aims to reach the general goal of great mass , high precision , easy - to - operate and lows cast
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