For the U.S. Army STRICOM, Creare has developed technology to stabilize network-based force feedback systems in the presence of arbitrary communication or processing time delays. This technology allows users to incorporate haptic displays (force feedback devices) into networked applications.

Network-based force feedback is an important tool in many distributed haptic systems, including haptic displays connected to networked Virtual Reality simulations. In these systems, delays may arise from the finite time required for the transmission and processing of data. Since delays add phase lag to the signal and this lag limits the effective bandwidth of the closed loop, these delays may result in an unstable haptic display system.

To address this issue, Creare developed two proprietary technology solutions that allow users to easily incorporate haptic displays into network-based force feedback applications: (1) Passive Transmission Line Modeling; and (2) Haptic Dead Reckoning. Both are described in a white paper. To request a copy, please email us.

Creare has successfully demonstrated this technology using the following network architectures:

• Run Time Infrastructure (HLA)
• Internet Protocol

The use of the STRICOM logo does not constitute endorsement by the US Army or the US Army STRICOM.