Abstract
An adaptive roll control system has been designed which enables a combat support vehicle to use soft spring rates while maintaining the roll characteristics of a stiffly sprung vehicle. Non-linear vehicle dynamics simulations have been used to develop the control strategy. For a maximum mean power consumption of 3% of the total engine power, it is possible to reduce the rms seat accelerations by between 25 and 100%. This data has been used in the Nato Reference Mobility Model to give a predicted increase in off-road speed of 20%.