A Method of Online Vehicle Quality Estimation Based on Model Iteration
A mass estimation and model technology, which is applied in the measurement device, vehicle test, machine/structural component test, etc., and can solve the problems of poor robustness, few applicable conditions, and low estimation accuracy.
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[0118] The present invention is described in detail below in conjunction with accompanying drawing:
[0119] refer to figure 1 , a kind of vehicle mass online estimation method based on model iteration described in the present invention first obtains the longitudinal acceleration, lateral acceleration, longitudinal velocity, yaw angular velocity, engine Output torque, steering wheel angle, and then iteratively calculate each other based on the longitudinal model and the lateral model to estimate the vehicle mass. Among them, the longitudinal model estimates the vehicle mass based on the longitudinal dynamics combined with the multiple forgetting least squares algorithm to estimate the vehicle quality, and the lateral model estimates the vehicle mass first based on the Kalman filter and the two-degree-of-freedom model to estimate the vehicle quality The lateral speed of the vehicle, and then based on the forgotten least squares algorithm and the lateral dynamic equation, the v...
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