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Optimizing system performance using state of health information

A technology of health status and performance, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc.

Active Publication Date: 2013-06-19
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, immediate repair is not always a convenient or desirable option

Method used

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  • Optimizing system performance using state of health information
  • Optimizing system performance using state of health information
  • Optimizing system performance using state of health information

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Embodiment Construction

[0016] Referring to the drawings, wherein like reference numerals represent like elements, system 10 is illustratively shown as an electric propulsion system. The system 10 may be used to electrically propel hybrid, battery electric, or extended-range electric vehicles. The methods described herein can be used to estimate and dynamically control any system 10 having multiple components, such as Figure 1A Alternative example system 10A shown in . However, for the sake of consistency in the illustration, the following will refer to Figure 2-5 to describe figure 1 A specific embodiment of system 10 is shown.

[0017] The system 10 includes a plurality of components including at least a first component 12 and a second component 22 . exist figure 1 In a particular embodiment, the first and second components 12 and 22 are an electric traction motor and a rechargeable battery pack, respectively. A power conversion module (PIM) 14 may also be another component electrically con...

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Abstract

A method for optimizing performance of a system includes determining, via a controller, a state of health (SOH) for each of a plurality of components of the system, and determining a state of function (SOF) of the system using the SOH of each component. The method includes estimating the remaining useful life (RUL) of the system using the system SOF, selecting a cost-optimal control strategy for the system using a costing model, and dynamically, i.e., in real time, executing the selected strategy to extend the estimated RUL. The method may include comparing the selected cost-optimal strategy to a calibrated performance threshold, and executing the selected strategy only when the selected strategy exceeds the threshold. A system includes first and second components and a controller. The controller dynamically executes the above method with respect to the components, which may be a traction motor and battery in one possible embodiment.

Description

technical field [0001] The present invention relates to a method and a device for determining the health information status of each component used in the system, and using the health information status to optimize system performance in real time. Background technique [0002] A system is a set of interacting and / or interdependent components that function as a whole. Each of the various components of a given system will degrade at different relative rates over time. Furthermore, since some components tend to play a more important role than others within the overall function of the system, degradation of a given component may specifically affect system performance compared to degradation of other components of the same system. For example, a vehicle sensor can affect measurement accuracy without causing major degradation in overall vehicle performance, whereas a degraded battery can severely degrade vehicle startup or functionality in a particular mode of operation. [0003]...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCH01M10/48B60W20/50G05B23/0294Y02T10/72Y02E60/10
Inventor X.唐M.A.萨曼Y.张
Owner GM GLOBAL TECH OPERATIONS LLC