High-speed Separator-site Machine Balancing Software Development And Research

Dish centrifugal separator (DCS) and Horizontal Decanter Centrifuge (HDC) are two kinds of high-speed rotating machines widely used in chemical engineering and food industry. Due to their special structure design and characteristic that ceaselessly input and output material under high-speed work condition, higher requests of rotor dynamic balancing both are necessarily at work rotate speed. Because of the virtues of agility, simpleness and economy, the field whole-machine dynamic balancing technology is applied widely to these kinds of machines inChina.Now the preferred dynamic balancing measurement instruments used for the two kinds of machines mentioned above mainly belong to the category of singlechip. Although these kinds of instruments can measure the vibration signals of rotating machines, obtain the information of emendation mass, they obviously lack some peculiarities, for instance, the agility, function extending and so on. In recent years, the development of dynamic balancing measurement instrument based on DSP has made up those deficiencies at some certain extent. But the expensive cost of DSP limit the application of this kind of instrument. Furthermore it still solve the problem of function real time extending.With the development of measurement technology based on computer, the research and development of dynamic balancing instrument based on virtual instrument have become the trend, which use computer as the workbench and resolve the problem of traditional instrument. So, in this thesis I detailedly dissertate the whole process of developing a set of dynamic balancing measurement instrument for high-speed rotary machine based on PC, which was developed in Lab VIEW, a standard development studio in measurement industry ,and can work in Windows XP/2000/NT/Me/98 OS.This set of instrument is one kind of virtual instrument that was developed with the powerful function of signal analysis, signal manage , data and signal vision etc in Lab VIEW, which aims directly at the characteristics of DCS and HDC and based on each special dynamic balancing theory , digital signal process technology and high efficiency data acquisition technology. It's virtues include real-time acquisition and analysis of vibration signal, high measurement precision and little error, easily function extending, intuitionistic, professional and agility instrument panel vision and so on. During measurement, operator can synchronously observes the signal waveform and vibration datum, records and reviews measurement datum of whole measurement processimpactful manage measurement datum, automatically build measurement record with Office document format, save waveform and vector diagram as bmp and jpg image file format, execute remote data acquisition and analysis.The instrument can work for general signal emendation plate and double emendation plate except of DCS and HDC. Due to have the function of real time data acquisition and analysis, it also work as fault-diagnostic instrument that execute the function of spectrum analysis.It has proved mat the instrument possesses stable function, simply is operated and easy is mastered in laboratory and at measurement locale. The balancing result is also satisfaction. So it has been sold as a product.