数字驱动由于其控制算法的灵活性可以有效地提高科氏质量流量计的工作性能。针对数字驱动的启振问题，本文基于模型分析和实验仿真，提出了正负阶跃交替激励启振方法。该方法通过跟踪检测传感器自激输出信号相位进行正负阶跃交替激励，使流量管的振动幅值持续、可靠地快速增大，进而结合非线性幅值控制算法和频率估计，可使流量管启振时间大幅度地缩短，克服了传统启振方法的局限性。-Digital drive control algorithm because of its flexibility can improve t

根据振动对象测试量和传感器拟输出量建立一个振动测量传感器的力学模型， 并导出其基本运动方程。 由运动方程求出频响方程， MATLAB或者C编程绘出幅频特性曲线， 相频特性曲线。-According to the amount of vibration test object and the sensor output of the proposed establishment of a vibration measuring mechanical model of the sen

ecent advances in electrical engineering and computer science, esp ecially in micro- electro-mechanical systems (MEMS), very-large-scale integration (VLSI) and op erating system theory, have made wireless sensor network (WSN) technologies an imp