A mobile work machine includes a frame, a set of ground engaging elements movably supported by the frame and driven to drive movement of the mobile work machine, a movable element movably supported by the frame to move relative to the frame, and an actuator coupled to the movable element to controllably drive movement of the movable element. The mobile work machine also includes a control system that generates an actuator control signal, indicative of a commanded movement of the actuator, and provides the actuator control signal to the actuator to control the actuator to perform the commanded movement. Further, the mobile work machine includes a stability system, coupled to the control system, that determines whether the commanded movement will result in an unstable state of the mobile work machine and, if so, generates a restriction signal, restricting the commanded movement to avoid the unstable state.