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The thesis regards the design of the hard bearing dynamic balancing system’s circuit of the hardware as the core, aimed at developing the hard bearing dynamic balancing machine which is cheap, steady and the precision high enough, with the point view of the fact in china, has carried on research to the dynamic technology, developed the system. The main job contains: principle analysis and detection methods, the design of the measure circuit, the development of the measuring system’s software.To the imbalance question that often appears to the rotor. The thesis firstly, have analyzed the uneven reason that produces and cause the vibrant characteristic unevenly, then according to hard bearing mechanic’s principle of dynamic balance, design the method of measure the rotor’s imbalance utilize with phase place sensitive.Measure circuit, design the simulation circuit of analog signal deal with, draw, strain wave and measure and the digital circuit of control, communicate with the computer. Have analyzed the using of many kinds of transducers that the dynamic balancing, have analyzed the characteristic of each key chip and designed the peripheral circuit, especially the key circuit.The measuring system’s software contains MCU measuring software, computer measuring software and communicating software. The control procedure of MCU was designed by using C51 language, the computer measure’s procedure was by VC++6.0. The software interface of the development keeps the view, amity, friendly and use easily.
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