Vehicle suspension system

A vehicle comprising a chassis, a pair of left and right wheels, and a suspension system for connecting the wheels and the chassis, wherein the suspension system comprises:

• a wheel axle that extends transversely across the vehicle and that is connected at the end portions thereof to the left and right wheels;
• a first leaf spring connected to the wheel axle in association with a corresponding wheel, wherein the first leaf spring is connected also to the chassis so as to, while deflecting, allow relative vertical movement between the chassis and the wheel axle and thereby also between the chassis and the wheels, wherein the first leaf spring extends in a longitudinal direction of the vehicle and is connected to the chassis via a moveable connection configured to allow a wind-up center of the first leaf spring to move in the longitudinal direction when the first leaf spring deflects;
• and
• an inertial measurement unit arranged at the wind-up center of the first leaf spring, wherein the inertial measurement unit is adapted to provide a signal indicative of an actual path followed by the wind-up center of the first leaf spring when the first leaf spring deflects;
• wherein the vehicle further comprises:
• a control circuitry configured to control the suspension system, wherein the control circuitry is configured to:
• compare the signal indicative of the actual path followed by the wind-up center with a representation of a reference path that the wind-up center of the first leaf spring should follow when the first leaf spring is well-functioning and deflects as intended;
• determine whether a difference between the actual path and the reference path is greater than a threshold value;
• and
• in response to the determined difference greater than the threshold, generate an alarm signal indicative of a detected or possibly detected leaf spring failure.