Estimation of Vehicle Side Slip Angle by Using Acceleration Sensor

Abstract

It is a matter of great importance to estimate vehicle side slip angle from the view of the vehicle motion control. Performance of vehicle motion control systems are dependent on estimation accuracy of vehicle side slip angle. There are two representive conventional methods to estimate vehicle side slip angle, direct integration method, linear observer method. Direct integration method causes integration error because it uses integrator which integrate sensor offset and noise with time. Another method uses linear observer estimates accurate values in linear region. In the other hand, it can’t estimate accurate values in non-linear region. In this research, we proposed better estimation method which can estimate by only algebraic operations.