Patent ID: 9614465
Date: 2017-04-04
CPC Classifications: B64C,F03D,F05B,H02P,Y02E

Claim:
1. An electric motor system comprising: a power supply; an electric motor connected to said power supply and having a braking element; an object mechanically coupled to said electric motor and driven by said motor; said object having a range of motion and a substantially neutral position within said range of motion; a power sensor configured to sense power from said power supply; a position sensor configured to sense position of said object in at least a portion of said range of motion; an energy storage connected to said electric motor; a controller connected to said position sensor, said power sensor and said energy storage; said controller configured and arranged to brake said motor using said braking element and power from said energy storage based on both said sensed position of said object by said position sensor relative to said neutral position and said sensed power from said power supply by said power sensor dropping below a threshold.