基于复影响系数的载重轮胎动平衡机标定算法

动平衡是检测轮胎质量的重要技术指标．研究了载重轮胎动平衡检测设备的核心技术，即系统参数标定算法．针对轮胎一轮辋．主轴动力学系统的复影响系数方程，提出了基于最小二乘的标定算法来解算影响系数．验证实验中在轮辋上安装砝码，来检测参数标定精度，其质量计算误差在±1％的范围内．与传统的参数标定方法相比，本算法能够更有效地消除系统误差的影响，求解得出的影响系数方程能够更准确地表征轮胎不平衡质量与主轴支承振动信号间的对应关系．

Complex Influence Coefficients Based Calibration Algorithm of Tire Dynamic Balance Testing Machine

Dynamic balance performance is a standard specification to determine whether a tire ＂qualifies＂. The system parameter calibration algorithm, a key technology of tire dynamic balance testing machine, is investigated elaborately. The tire-rim-spindle dynamics is demonstrated by the complex influence coefficient plant model, and a least square based calibration algorithm is developed to calculate influence coefficients. Additional weight is added to the rim to verify the accuracy of parameter calibration. Experimental results show that the mass calculation error of unbalanced weight is within the range of＋1%, which demonstrates that the presented algorithm is more effective in correcting instrumental systematic errors than traditional methods. As a result, the derived influence coefficient plant model is more accurate in demonstrating the relationship between tire unbalanced mass and spindle bearing vibration signals.