摘要
根据液体黏度测量的自由衰减扭摆法原理,研制了一种快速检测盒装UHT奶品质的装置。采用Hilbert变换包络解调方法,对液态奶盒产生的自由衰减扭转振动信号进行分析计算,求出系统的阻尼系数,并和标准样本比较以判断产品质量的好坏。结果表明,该方法具有检测成本低,检测精度高的特点。
According to free damped torsion vibration theory about the measurement of the viscosiW coefficient of the liquid, one quick testing equipment is studied out to test the quailW of box UHT milk, using the Hilbert transform envelope demodulation, analyzes the free damped torsion vibration signal which produced by the box of liquid milk and calculates the damping coefficient of system, compares it with standard sample to judge the qualiry of product. The result of experiment indicates that this method is of the advantages of low testing costs and high testing precision.
出处
《中国乳品工业》
CAS
北大核心
2007年第12期42-44,共3页
China Dairy Industry
基金
国家科技攻关专项(2004DA907A29)
黑龙江省教育厅科技项目(10051058)
