Distributed engine control system

• US 8,036,805 B2
• Filed: 11/26/2007
• Issued: 10/11/2011
• Est. Priority Date: 07/13/2007
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: McMahon, William M., Mahoney, Timothy D., Hess, Richard F., Rose, Philip E., Griffiths, Scot E., Teager, John, Hall, Brendan, Yount, Larry J., Bhatt, Devesh
• Primary Examiner(s): Beaulieu; Yonel
• Application Number:
  US11/945,037
• Publication Number:
  US 20090312892A1
• Time in Patent Office: 1,415 Days
• Field of Search: 701 99-100, 60/390.1, 602/39, 700286-287, 700/290
• US Class Current: 701/100
• CPC Class Codes: F02C 9/28 Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed F02C9/30 - F02C9/38, F02C9/44 take precedence
• CPC Class Codes: F02D 41/266 the computer being backed-up or assisted by another circuit, e.g. analogue
• CPC Class Codes: F05D 2260/80 Diagnostics
• CPC Class Codes: G05B 9/03 with multiple-channel loop, i.e. redundant control systems
• CPC Class Codes: Y02T 50/60 Efficient propulsion technologies, e.g. for aircraft

Abstract

A distributed engine control system is provided. The engine control system includes first and second engine data concentrators. Each of the first and second engine data concentrators include a processor module, a signal conditioning module coupled to the processor module, a data transfer module coupled to the processor module, and a data bus coupled between the first and second engine data concentrators and a hydro-mechanical unit (HMU).

Claims

1. A distributed engine control system for a gas turbine engine incorporating a hydro-mechanical unit (HMU), comprising:

first and second engine data concentrators, each of the first and second engine data concentrators including;

a processor module,

a signal conditioning module coupled to the processor module,

a data transfer module coupled to the processor module; and

a data bus coupled between the first and second engine data concentrators and the HMU.

2. The system of claim 1, further including first and second power and backup battery busses coupled to each of the first and second engine data concentrators to supply power.

3. The system of claim 1, wherein the signal conditioning module of each of the first and second engine data concentrators includes a redundant data input, a redundant data output, a simplex data input, and a simplex data output, each coupled to.

4. The system of claim 3, wherein each signal conditioning module is adapted to condition redundant data received through the redundant data input and simplex data received through the simplex data input.

5. The system of claim 4, wherein the data transfer module of the first engine data concentrator is adapted to:

route the redundant data to the processor module of the first engine data concentrator,

route the simplex data to the processor module of the first engine data concentrator, and

route the simplex data over the data bus to the data transfer module of the second engine data concentrator.

6. The system of claim 5, wherein the data transfer module of the second engine data concentrator is adapted to route the simplex data received by the signal conditioning module of the first engine data concentrator to the processor module of the second engine data concentrator.

7. The system of claim 1, further including first and second control modules integrated into the HMU, each configured to receive the redundant and simplex data from each of the first and second engine data concentrators over the data bus.

8. The system of claim 1, wherein the data bus is compliant with a time-triggered protocol or an Ethernet protocol.

9. The system of claim 1, wherein the data bus is further coupled to a high-integrity control (HIC) platform to provide existing data resources to each of the engine data concentrators.

10. The system of claim 9, wherein the high-integrity control platform includes a flight control system or an integrated modular avionics platform having a plurality of redundant computing resources.

11. The system of claim 1, wherein each of the first and second engine data concentrators further include a multiplexer module coupled between the signal conditioning module and the data transfer module, the multiplexer module comprising:

analog-to-digital (A/D) and digital-to-analog (D/A) converters for converting analog redundant and simplex data to digital redundant and simplex data to be processed through the data transfer module.

12. A method of controlling an engine having first and second engine data concentrators, comprising:

signal conditioning inputted simplex and redundant data;

multiplexing the inputted simplex and redundant data, converting analog simplex and redundant data into digital simplex and redundant data;

processing the digital redundant data; and

transferring the digital redundant and simplex data from the first engine data concentrator to the second engine data concentrator over a digital data bus.

13. The method of claim 12, further including transferring the digital redundant and simplex data from the first engine data concentrator to a hydro-mechanical unit for fuel control.

14. The method of claim 12, further including receiving a control algorithm over the digital data bus from a high-integrity control platform.