The invention discloses an
electromagnetic radiation anti-interference test method for an automobile steer-by-wire
system. The method comprises the following steps: 1) placing a tested vehicle in an
electromagnetic radiation anti-interference test environment; 2) installing a steering execution device to apply a steering torque to a
steering wheel of the tested vehicle and collecting the torque; (3) installing a steering measuring device to collect a P-point motion trail of a
steering wheel; (4) under the conditions that
electromagnetic radiation interference is not applied and electromagnetic
radiation interference is applied,
steering wheel steering angle curves beta (t) and gamma (t) are obtained through P-point motion trail calculation; and 5) comparing the two curves, and judging whether the
steering system meets the electromagnetic
radiation anti-interference test requirement or not according to the two curves. According to the method, the defects that only the steering wheel is detected and the steering wheel is not detected in an existing method are overcome, in the method, when the
steering angle of the steering wheel is measured, complex operation such as steering axis alignment is not needed, the coordinate track of the point P is collected, then the
steering angle curve is obtained through fitting, operation is easy, the measuring error is small, compatibility is good, and the testing efficiency is high.