Redundant control system

• US 3,338,138 A
• Filed: 12/01/1965
• Issued: 08/29/1967
• Est. Priority Date: 12/01/1965
• Status: Expired due to Term

• Current Assignee: HR Textron, Inc.
• Original Assignee: Derek Wood
• Inventors: Wood, Derek
• Application Number:
  US04/510,911
• Time in Patent Office: 636 Days
• US Class Current: 91/510
• CPC Class Codes: B64C 13/24 Transmitting means
• CPC Class Codes: F15B 18/00 Parallel arrangements of independent servomotor systems

Claims

1. A REDUNDANT CONTROL SYSTEM FOR POSITIONING A PLURALITY OF MOVABLE MEMBERS IN RESPONSE TO APPLIED SIGNALS ADAPTED FOR AUTOMATICALLY DISABLING A FAILED CHANNEL WITHIN SAID SYSTEM COMPRISING:

(A) A PLURALITY OF CONTROL CHAINS EACH CONNECTED TO A PRESELECTED ONE OF SAID MEMBERS AND ADAPTED TO POSITION THE SAME IN RESPONSE TO SIGNALS APPLIED THERETO, EACH OF SAID CONTROL CHAINS INCLUDING (1) A PAIR OF SERVO CONTROL MEANS CONNECTED TO SAID PRESELECTED MEMBER, (2) A PAIR OF SENSOR MEANS, EACH BEING CONNECTED TO ONE OF SAID SERVO CONTROL MEANS, AND (3) SWITCH MEANS CONNECTED TO SAID PAIR OF SERVO CONTROL MEANS AND EFFECTIVE WHEN ENERGIZED TO DEACTIVATE ONE OF SAID SERVO CONTROL MEANS;

(B) A SOURCE OF SIGNALS CONNECTED TO EACH OF SAID SERVO CONTROL MEANS, (1) SAID SIGNALS BEING SUBSTANTIALLY IDENTICAL DURING NORMAL OPERATION OF SAID SYSTEM;