Systems, devices, and methods including a stand-up wheel chair having automatic stability control

A stand-up wheelchair, comprising:

• a stand-up assembly having an articulated structure movable between a sitting configuration, a kneeling configuration, a reaching configuration, a leaning configuration, or a standing configuration and a different one of a sitting configuration, a kneeling configuration, a reaching configuration, a leaning configuration, or a standing configuration;
• a plurality of rotatable members operable to frictionally interface the stand-up wheelchair to a travel surface and to move the stand-up wheelchair along the travel surface;
• a stabilization assembly having a plurality of flywheels operable to apply a righting torque along one or more of a transverse axis, a longitudinal axis, a vertical axis of the stand-up wheelchair, or combinations thereof;
• and
• a dynamic stability controller operably coupled to the stabilization assembly, the dynamic stability controller operable to cause one or more of the plurality of a flywheels to change spin responsive to an externally applied torque.

A stand-up wheelchair system, comprising:

• circuitry for actuating a stand-up assembly configured to support a passenger transitioning between a sitting position, a kneeling position, a reaching position, or a leaning position, and a substantially standing position;
• circuitry for sensing a stand-up wheelchair mass distribution and for determining a stand-up wheelchair center of mass location;
• and
• circuitry for actuating rotation of at least a first flywheel about a first axis responsive to changes in a stand-up wheelchair center of mass location.