Electromechanical actuator comprising a redundant electronic sub-system

US10868459B2 · kind B2 · utility

Assignees

• Robert Bosch GmbH · DE
• Robert Bosch Automotive Steering LLC · US

Inventors

• Gebhard Hudelmaier · Mögglingen, DE
• Eugen Sworowski · Lorch, DE
• Thomas Hessler · Lichtenstein, DE
• Hans-Peter Mueller · Reutlingen, DE
• Sylvia Wiedemann · Ludwigsburg, DE

Key dates

• Filing date: Oct 28, 2016
• Grant date: Dec 15, 2020
• Expiry date: Oct 5, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K2213/12
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An electromechanical actuator for rack-and-pinion steering includes a stator, rotor, and electronic system. The electronic system includes at least one first electronic sub-system and a second electronic subsystem, each operatively connected to the stator and the rotor. The at least one first electronic sub-system is arranged at least on a first circuit carrier plane and a second circuit carrier plane, and includes a first power output stage, a first control unit, and a first rotor position sensor arrangement. The second electronic sub-system is arranged at least on the first circuit carrier plane and a third circuit carrier plane, and includes a second power output stage, a second control unit, and a second rotor position sensor arrangement. The first, second and third circuit carrier planes are arranged perpendicular to an axis of rotation of the rotor, and are spaced apart from each other along the axis of rotation.