Design And Implementation Of Hard Pearing Dynamic Balancing Machine Measurement System Based On Labview

In the field of industrial production, rotating machinery has been more and morepopular and is creating more and more economic value for the society.The rotor is animportant part of rotating machinery, the vibration of the rotor imbalance can causemechanical equipment vibration, noise, etc. And these are the main reasons for thedestruction of the mechanical structure body. Therefore, in the manufacture anduse of all kinds of machinery, rotor dynamic balance is greatly significant.At present, hard bearing dynamic balancing machine is widely used in thedynamic balance measuring equipment. In our country, most of the dynamicbalancing instruments currently used are based on MCU technology, because of itsconstraints of main control chip performance and storage capacity, system functionextensibility and the digital signal processing operation ability are limited. Therefore,the precision and efficiency of dynamic balance are not so satisfactory.In order to adapt to the needs of modern dynamic balance, and increase testingprecision, this paper combined the analog circuit, digital circuit, and ARM with thevirtual instrument (VI) based on the PC’s powerful computation ability. Using theLabVIEW, the dynamic balance measurement system which based on hard support isdesigned.In this paper, the main research works are as following:(1) The design of the hardware circuit. This part includes reshaping the signaloutput from photoelectric sensor, using100times frequency signal as the clock pulseof the switched-capacitor filter MF10ccn, and using32times frequency signal as theactivation pulse of A/D acquisition.(2) The design of signal acquisition system based on ARM. This part includes themeasurement of rotating speed, vibration signal acquisition and procession, and theserial communication between the MCU with upper machine. All of these are realizedon STM32which has the kernel architecture of Cortex-M3.(3) The design of software based on upper machine by LabVIEW. This part includes serial communication, procession of vibration signal, the separating planecalculation, and system calibration.In addition, beautiful and easily operated interfaceis designed. After a lot of dynamic balance test experiments, it shows that this systemhas some features such as convenient operation, fast operating speed, and highbalance accuracy. So this system has good engineering application value.