Managing steering with short from battery to ground
First Claim
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.
1 Assignment
0 Petitions
Accused Products
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.
32 Citations
20 Claims
-
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. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A redundancy system for a steering system having a primary controller and a primary power source, the redundancy system comprising:
-
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 being in electrical communication with the primary power source, the second node being in electrical communication with the secondary power source, the interface circuit being 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. - View Dependent Claims (7, 8, 9, 10, 11, 12)
-
-
13. A control system, comprising:
-
a primary power source in communication with a common bus associated with the control system; a secondary power source in selective communication with the common bus; a first controller in communication with a first node of the common bus configured to manage control of a steering system; a second controller in communication with a second node of the common bus configured to manage control of the steering system; and an interface circuit disposed between the first node and the second node, the interface circuit having a blocking device configured to isolate a short at the first node from the secondary power source, a fusible link configured to isolate a short at the second node from the primary power source, and a self-test element configured to selectively engage a self-test of the primary power source and the secondary power source. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification