【作者】 谢煜； 傅景礼； 陈本永；

【Author】 XIE yu;FU Jingli;CHEN Benyong;Faculty of Mechanical Engineering and Automation,Zhejiang Science Technology University;Institute of Physics and electrical information,Shangqiu Normal University;Faculty of science,Zhejiang Science Technology University;

【机构】 浙江理工大学机械与自动控制学院； 商丘师范学院物理与电气信息学院； 浙江理工大学理学院；

【摘要】 对以货车钢板弹簧为弹性体的电容式车辆称重传感器系统的非线性动力学特性进行了研究。基于机电分析动力学原理,结合电容式称重传感器安装和工作过程,建立了2自由度的电容式车辆称重传感器系统的模型。给出了系统各部分的动能、势能、电场能、磁场能与耗散函数,由广义Lagrange-Maxwell方程建立了系统的机电耦合运动微分方程组。利用四阶Runge-Kutta公式,对系统运动微分方程组进行数值求解,并给出了各个状态变量的时间响应曲线以及机械位移与传感器电流之间的耦合曲线,分析了各个曲线变化的过程和特点。最后用静态实验测量数据和电容式车辆称重传感器系统的动力学模型的仿真计算结果进行对比,验证了2自由度的传感器系统模型的适用性和准确性。更多还原

【Abstract】 The nonlinear dynamics characteristics of capacitive vehicular weighing sensor are studied.Based on the theory of electromechanical analysis dynamics,in combination with capacitance weighing sensor installation and working process,a model of the capacitive vehicular weighing sensor system with 2 degrees of freedom is established.The kinetic energy,the potential,the electric field energy,magnetic field energy and the dissipation function of the system are given,using generalized Lagrange-Maxwell equation,the electromechanical coupling motion differential equations of the system are established.Using the fourth order Runge Kutta formulas,the motion differential equations of the system are solved numerically.The time response curve of all state variables and the coupling curve between mechanical displacement and current of the sensor are presented,the process and features of each curve is analyzed.Finally,the simulation results of the capacitive vehicular weighing sensor’s dynamical model are compared with the measurement data of static experiment and it is verified that model of the capacitive vehicular weighing sensor system with 2 degrees of freedom is of applicability and correctness.更多还原