Technical Paper
Fourth Axle Steering Control Strategies of an 8x8 Scaled Electric Combat Vehicle
2024-04-09
2024-01-2763
With the rise in demand, advanced steering control and electric vehicle technology are rapidly developing in modern times. Due to a controller's role as a backbone for the modern vehicle, its study has become increasingly crucial. This study investigates Ackermann's condition and active 4th axle steering control strategies of an 8x8 scaled electric combat vehicle with a predefined path following. Two different rear steering methods - Fourth axle steering (fixed third axle) and All-wheel steering - are applied to Ackermann condition and active 4th axle steering control strategies. In the scaled vehicle, each wheel is independently driven by an in-wheel motor, while the steering is carried out by linear actuators. Individual eight-wheel steering control systems are designed and installed on the scaled vehicle to evaluate the driving performance from low speed to high speed.