Investigation of the Measure and Control Method for Vibration of the Variable-Frequency Precisely Cropping Machine

An effective measure and control method is necessary in the cropping machine which utilizes the variable-frequency vibration to shear bar with low stress. Based on the analysis of the principle of the cropping machine, the hardware of the measurement and control system is built up. A piezoelectric sensor and charge amplifier are employed to collect the vibration characteristic of the cropping machine through a PCL 818L data card. The software of measurement and control for vibration is programmed based on the LabVIEW, whose main interface is friendly and practical. According to the perfect results of the cropping experiments, the presented measure and control method for the cropping machine is effective. A good foundation for further investigation on the principle of the cropping machine is established.