EXERCISE MACHINES

摘要

A rowing exercise machine is arranged so that each stroke causes rotation of a flywheel and the shaft of an alternator. The resistive forces are primarily provided by the alternator which is driven by a constant but adjustable current. In the intervals between strokes, the deceleration of the flywheel is measured to provide an indication of the resistive forces being generated by the machine. This measurement is used to control the forces and/or to provide an indication of the work carried out by the user.