声阻尼式质量流量计的测控技术研究

A Study on Measurement and Control Techniques for Mass Flowmeter Based on Acoustic Damping

对声阻尼式质量流量计的振动系统进行等效折算，得出确定其特征参数ωｎ和ζ的方法，并重点介绍了实验研究系统的测量电路、控制电路及其测控技术特点．实验结果表明，采用微机化测控技术能使振动系统恒速谐振，从而确定驱动与阻尼的对应关系．

The equivalent conversion of a vibration system has been carried out and the method of how to determine the characteristic parameters are described. The measurement circuit and control circuit of the testing system and its technical features are emphatically discussed. The experimental results show that constant speed resonance of vibratory system can be realized using microcomputer based control techniques and the relationship between driving and damping of vibratory system can be found out.