The invention discloses a steering-by-wire
system and a control method based on a
kalman filter capable of
divergence inhibition. The
system comprises a
steering wheel and a connecting mechanism of the same, a sensor of
steering wheel turning angles, a sensor of
steering wheel torque, a road sensing motor, a
current sensor of the road sensing motor, a steering motor, a
current sensor of the steering motor, a car speed sensor, a front wheel
turning angle sensor, a gear-rack steering device, a
position sensor, a filtering
estimation module, a safety judgment module, a
control signal superposition module and a steering
electronic control unit. According to the invention, the
kalman filter capable of the
divergence inhibition is used for filtering prediction and
estimation of postures of automobile motions; and the
kalman filter with a
divergence inhibition function acquires signals from the electronic sensors so as to estimate a real-time state of an automobile. The steering controller of the
system disclosed by the invention can make the system have high interference inhibition performance on the premise of ensuring steering stability, so that high stability of automobile manipulation can be obtained.