R. Hoelper

Intelligent Control of a Semi-Autonomous Omnidirectional Wheelchair

Ulrich Borgolte, Helmut Hoyer, A. M. Sabatini, 1995 .

User-Oriented Motion--Planning for Omnidirectional and Kinematic Constraint Wheelchairs

Helmut Hoyer, U. Pabst, R. Hoelper, 1995 .

Collision-Free Robot Path Planning Based on Local Environment Information.

R. Hoelper, P. Adolphs, 1993 .

Intelligent Omnidirectional Wheelchair with a Flexible Configurable Functionality

Helmut Hoyer, R. Hoelper, H. Hoyer, 1994 .

The OMNI Wheelchair with High Manoeuvrability and Navigational Intelligence

Ulrich Borgolte, Helmut Hoyer, A. M. Sabatini, 1995 .

An Omnidirectional Wheelchair with Enhanced Comfort Features

Ulrich Borgolte, Helmut Hoyer, R. Hoelper, 1997 .