位移信号测量轮胎不平衡质量数学模型的建立

Mechanical model of displacement signal measuring tire unbalanced mass

本文在分析了测力法轮胎动平衡测量系统不足的基础上,改进了轮胎动平衡测试装置的支承结构、传感器类型及其连接方式,针对改进的轮胎动平衡测试系统,建立了以该系统振幅位移量为输入变量,轮胎不平衡质量为输出变量的多变量数学模型,采用激光非接触测量方法获取了位移信号,最后通过自相关序列信号处理方法在载重轮胎动平衡系统上比较位移传感器和力传感器所采集到的信号时域图,验证了该方法对提高测试系统稳定性、灵敏度有较好地促进作用。

Balance based on the analysis of the dharma wheel load quickened,on the basis of measurement system is insufficient,improve the supporting structure of tire dynamic balance testing device,sensor types and connection mode,the improvement of tire dynamic balance test system,establishes the system amplitude displacement as input variables,tire uneven quality as output variables of multivariable mathematical model,using a laser non-contact measuring method to obtain the displacement signals,finally through the signal processing method of autocorrelation sequence comparison on load tire dynamic balance system displacement sensor and the force sensor signal collected by the time-domain diagram,the method is proven to be to improve stability and sensitivity test system has a better role in promoting.