The motion platform of the driving simulator consists of a mobile frame and a moving platform sitting on it. The driver's seat, control and communication elements are attached to the platform.
Three vertical arranged synchronous linear motors power the motion of the platform. The magnets of the motors are fixed to the frame and the vertical moving coils are linked to the platform via rods with ball joints crossing underneath the patform. This enables the platform to perform roll, pitch and elevate motions.
The linear motors allow for a highly dynamical motion of the platform. Each of the three linear motors can bring up a nominal force of 3000N and a short-term maximal force of 6300N.
The position setpoint of each motor is updated every 1ms by the simulation cluster, communicating a setpoint via a CAN bus to the respective inverter module residing in the (also mobile) electric control cabinet.
The driver's seat, instruments and consoles have been disassembled from a Porsche 997 Turbo.
(Thanks to Porsche Research and Development Centre, Weissach.)
Most of the instruments, including the combined instruments, gear-shift lever, stopwatch and keylock can be controlled and polled due to a restbus simulation, which runs on the simulation cluster and communicates with the instruments via two CAN buses.
The steering column is mounted to the shaft of a synchronous electric motor with a nominal torque of 15Nm. The motor is controlled by the simulation cluster, setting a new motor torque setpoint and reading the current position of the steering wheel within a 1ms interval. The motor has a special coil in order to reduce cogging effects.
This assembly allows for an important haptic feedback over the steering wheel to the driver.
The brake pedal is attached to the shaft of a spur gear unit which is mounted to a synchronous electric motor. Controlled by the simulation cluster within a 1ms interval, this part enables the simulation of brake forces and load alternation effects of an antiblocking system.