Research on the Online Initial Value Calibration Method for the Wheel Force Transducer

Due to the special characteristics of the wheel force transducer (WFT), the traditional methods are hard to acquire the initial values of the WFT precisely and conveniently. Aiming at the problem, two online calculation methods for the initial value are proposed in this paper. The key of these methods is that the two proposed methods convert the problem of solving the initial values to an optimization problem. The two methods do not need any calibration equipments or additional manual operation, just require to drive the vehicle on a relatively flat road at an approximate constant speed for a while or park the vehicle on the relatively flat ground for several times. To find out the factors which influence the performance of the proposed methods, the experiments on the simulating data are carried out. To verify the effect of the presented methods, the experiments on the wheel test bed and dynamic road test are carried out. The experiment results show that the presented two initial value calculation methods can acquire the initial values of the WFT with high accuracy and simple operation.