Amazon Technologies, Inc.

Sean Hugh Breheny

Peter R Wurman

Andrew Stubbs

Matthew David Verminski

Peter K Mansfield

Patrick R Dingle

Kevin John Trenholme

Sean Garcen

Shaun Steven Hayward

William Joseph Sullivan

A motor controller configured to control different types of electronically commutated motors (ECMs) includes a range of different rotor orientation signal inputs to accommodate differences between ECM motor types. The motor controller includes a control unit that receives motor operation commands and controls operation of the ECM in accordance with the motor operation commands. The control unit receives and stores data designating ECM type and estimates rotor position based on the designated ECM type.

Integrated motor driver/controller with sensorless or sensored commutation

Some examples include charging an onboard power source of a mobile drive unit (MDU) of an inventory system while the MDU is operating in the inventory system, rather than removing the MDU from service for recharging. As an example, the MDU may receive instructions to retrieve an inventory holder, and an onboard power source of the MDU may be charged while the MDU and the inventory holder are located at the charging station.

Mobile drive unit charging

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Watertown, MA, United States of America

Sean Hugh Breheny