Patent ID: 9139223
Filing Date: 2015-09-22
Classification: B62D,H02H

Abstract:
1. A method of providing redundant control of a steering system using one of a first controller and a second controller, the method comprising the steps of: providing an interface circuit between at least a first node and a second node of the steering system, the first node being electrically disposed between a primary power source and the first controller, the second node being electrically disposed between a secondary power source and the second controller; automatically engaging a self-test of the primary power source and the secondary power source upon machine startup; in response to a short at the first node, engaging the interface circuit to isolate the short from the secondary power source, and engage the second controller to operate the steering system; and in response to a short at the second node, engaging the interface circuit to isolate the short from the primary power source, and enable the first controller to operate the steering system.