Managing steering with short from battery to ground

US9139223B2 · kind B2 · utility

Assignee

• Caterpillar Inc. · US

Inventors

• Thomas J. Bickel · Lacon, US
• Amanda J. Wilke · Peoria, US
• Wendell D. Stahl · Bradford, US
• Andrew G. Genseal · Chillicothe, US
• Md Nasir Uddin · Peoria, US
• Dane S. Richards · Toulon, US
• Jennie L. Nelson · Brimfield, US

Key dates

• Filing date: May 23, 2013
• Grant date: Sep 22, 2015
• Expiry date: Jun 10, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02H3/16
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A redundancy system for a steering system having a primary controller and a primary power source is provided. The redundancy system may include a secondary controller coupled to a secondary power source and configured to manage control of the steering system, and an interface circuit disposed between at least a first node and a second node. The first node may be in electrical communication with the primary power source, and the second node may be in electrical communication with the secondary power source. The interface circuit may be configured to selectively engage a self-test of the primary power source and the secondary power source, isolate a short at the first node from the secondary power source, and isolate a short at the second node from the primary power source.