Steering control device low-temperature bench test device and test method

The invention provides a low-temperature bench test device and test method for a steering control device, and belongs to the field of steering control tests. The testing device comprises a testing clamp, a torque measuring device and a low-temperature-resistant bearing, the torque measuring device is connected with the steering control device, and the testing clamp comprises a steering column fixing support, a front wall dust cover fixing support, a bearing fixing support and a steering intermediate shaft fixing clamp. An outer ring of the low-temperature-resistant bearing is connected with a mounting hole of the bearing fixing support, a connecting rod and a spline are arranged on the steering intermediate shaft fixing clamp, the connecting rod is connected with an inner ring of the low-temperature-resistant bearing, and an inner spline at the tail end of a steering intermediate shaft of the steering control device is connected to the spline. A steering column of the steering control device is connected with