Additional side-slip angle and dynamic varying yaw pole cues that improve simulator realism; Cruden professional simulator can be sampled at the Professional Motorsport World Expo 2014.


Cruden, an exhibitor at the Professional Motorsport World Expo 2014 (November 13th -15th; Cologne, Germany; stand 5156), has developed a new approach to motion-cueing that combines vehicle side-slip angle and dynamic varying yaw pole.


Following the introduction last year of enhancements to the company’s ePhyse external physics package, which allowed new levels of motion-cueing customization on its simulators, Cruden is now showcasing its own interpretation of the interface. Adding vehicle side-slip angle and dynamic varying yaw pole to existing motion cues overcomes the limits of traditional acceleration cues and is particularly useful in providing realistic feel of oversteer and understeer.


“There are limits to how well a motion based simulator can cue acceleration on the longitudinal and lateral direction because the available space is used quickly and the feeling cannot be sustained. We understand that some vehicle dynamics teams, particularly in professional motorsport, need more,” explains Edwin de Vries, senior vehicle dynamics engineer at Cruden.


“Our novel cueing method imposes the vehicle’s side slip angle – a signal that fits, unmodified, within the motion space – on the platform’s yaw angle to avoid washout- and high pass cueing filters,  enriching the driver’s handling perception.


“We can show a reduction of the latency of platform motion with respect to simulated vehicle; the yaw response is more crisp than with the traditional cueing,” says de Vries.


With the new ePhyse add-on, Cruden’s customers are able to bypass the standard cueing algorithms and command direct platform set points from within the Simulink environment; the motion base software continues to manage the system’s inverse kinematics, workspace and safety aspects. This opens up opportunities for advanced cueing techniques like model predictive control or prepositioning.


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