All-working-condition dynamic simulation test bench for detecting abnormal sound of whole vehicle and test method thereof

The invention discloses a full-working-condition dynamic simulation test bench for detecting abnormal sound of a whole vehicle and a test method of the full-working-condition dynamic simulation test bench. The wheel connecting device is used for being fixed with a wheel and can synchronously rotate with the wheel; the rotating hub supporting device is used for supporting the bottom surface of the tire and can drive the wheel to rotate or is driven by the wheel to rotate; the connecting rod driving device is used for driving the wheel connecting device and the rotating hub supporting device to synchronously move up and down; and the steering driving device is used for driving the wheel connecting device, the rotating hub supporting device and the connecting rod driving device to synchronously rotate around the vertical direction or enabling the wheel connecting device, the rotating hub supporting device and the connecting rod driving device to be driven by wheels and synchronously rotate around the vertical di