US 12,188,418 B2
System for controlling a turbine
David Keith Crowe, Tucson, AZ (US); and Elden W. Crom, Tucson, AZ (US)
Assigned to Signal Power Group Operating LLC, Oro Valley, AZ (US)
Filed by Signal Power Group Operating LLC, Oro Valley, AZ (US)
Filed on Nov. 17, 2023, as Appl. No. 18/513,302.
Application 18/513,302 is a continuation of application No. 17/967,858, filed on Oct. 17, 2022, granted, now 11,859,562.
Application 17/967,858 is a continuation of application No. 17/485,394, filed on Sep. 25, 2021, granted, now 11,499,484, issued on Nov. 15, 2022.
Claims priority of provisional application 63/083,378, filed on Sep. 25, 2020.
Claims priority of provisional application 63/056,951, filed on Jul. 27, 2020.
Prior Publication US 2024/0084739 A1, Mar. 14, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F02C 9/00 (2006.01); G05B 15/02 (2006.01)
CPC F02C 9/00 (2013.01) [G05B 15/02 (2013.01); F05D 2270/706 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A system for controlling an engine, comprising:
a fuel governor comprising a first VCPID (Variable Coefficient Proportional Integrative Derivative) control loop operating in parallel with a second VCPID control loop to regulate fuel flow to the engine, each VCPID control loop of the first VCPID control loop and the second VCPID control loop being associated with a respective engine parameter and one or more external parameter,
an external transducer comprising a sensor for sensing an external parameter of the one or more external parameter,
wherein the first VCPID control loop incorporates feedback from the second VCPID control loop to feed an integral term of the first VCPID control loop by steps comprising:
(i) a previous derivative gain and a previous proportional gain are summed and subtracted from a selected output for the engine to yield a first result term,
(ii) the first result term is input to an integral gain portion of the first VCPID control loop,
wherein the each VCPID control loop of the first VCPID control loop and the second VCPID control loop includes a VCPID output that is fed to a first function,
wherein the first function selects a fuel command based on the VCPID output, the fuel command being a command that requires a first amount of fuel to the second VCPID control loop, and
wherein the fuel governor provides the first amount of fuel to the engine to regulate the fuel flow to the engine to maintain the external parameter sensed by the sensor at least one of (i) above a lower limit and (ii) below an upper limit.