Research Of A Intelligent Multi-function Dynamic Balance Measuring Instrument

In this thesis, the theory of dynamic balance and a measuring instrument of dynamic unbalance with multi-function are introduced. The instrument is composed of 8098 single-chip computer and color liquid crystal display(LCD).Hardware is consist of control part which includes 8098 single-chip computer, circuit of memory expansion, interfaces of keyboard, LCD, I/O, and so on, and unbalance signals processing part. The input, memory, output of informations are provided by the control part. The pulses of rotate speed, reference of phase and tracking central frequency of filters are provided by reference circuit. The filtering and amplification of unbalance signals are provided by vibration circuit. Software consists of system initialization, self-test, measurement range selection, balance parameter setting, calibration coefficients determining, access programs of keyboard and LCD.The unbalance signals from vibration circuit are transformed into digital signals by A/D converter, which are filtering further with Fourier Transformation(FT), then the amplitudes and phases of unbalance signals are calculated with calibration coefficients.Adopting 16-bit high performance single-chip computer and LCD, the instrument has friendly human-machine interface and higher intelligent degree. The instrument can be used with general dynamic balancing machines or automatic balancing production line.