Spherical tractor operating mobile platform

摘要

A spherical tractor operating mobile platform (STOMP) is provided for internally propelling and steering along an external surface. The STOMP includes a spherical shell having interior and exterior surfaces, an internal chassis containing an electrical power supply and a propulsion controller; a tractor drive system and an overhead wheel assembly. The tractor drive system provides propulsion and steering of the shell along the surface. The drive system includes a frame that connects to the chassis from below and contains a motor unit. The frame includes port and starboard sides that support respective wheel sets surrounded by corresponding continuous tracks. These tracks engage the shell's interior surface. Each wheel set includes a drive wheel, an idler wheel and a tension wheel for engaging a corresponding track. The overhead wheel assembly connects to the chassis from above to maintain the chassis and the drive system in compression with the shell. To propel the shell, the propulsion controller commands the motor unit to provide torque to both the port and starboard drive wheels. For steering the shell towards starboard, the motor provides torque to the port drive wheel. For steering the shell towards port, the motor provides torque to the starboard drive wheel.

主权项

1. A spherical tractor operating mobile platform (STOMP) for internally propelling and steering along an external surface, said STOMP comprising:
a spherical shell having interior and exterior surfaces, said exterior surface being disposable on the external surface, an internal chassis containing an electrical power supply and a propulsion controller; a tractor drive system for propelling and steering said shell along the external surface, said drive system including a frame that connects to said chassis from below and containing a motor unit, said frame having port and starboard sides that support respective wheel sets surrounded by corresponding continuous tracks that engage said interior surface of said shell, each wheel set including a drive wheel, an idler wheel and a tension wheel for engaging a corresponding track; and an overhead wheel assembly that connects to said chassis from above to maintain said chassis and said drive system in compression with said shell, wherein said propulsion controller commands said motor unit provide torque to at least one of both said port and starboard drive wheels for propulsion of said shell, said port drive wheel for steering said shell towards starboard, and said starboard drive wheel for steering said shell towards port.