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System and method for monitoring the stability of a hybrid powertrain

An electric and deterministic module technology, which is applied to the layout of multiple different prime movers of hybrid vehicles and general power plants, power plants, etc., can solve problems such as instability or resonance of hybrid powertrain systems

Active Publication Date: 2011-03-23
GM GLOBAL TECH OPERATIONS LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, closed-loop feedback control can cause instability or resonance in the hybrid powertrain system due to some undesired and unknown system characteristics

Method used

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  • System and method for monitoring the stability of a hybrid powertrain
  • System and method for monitoring the stability of a hybrid powertrain
  • System and method for monitoring the stability of a hybrid powertrain

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Embodiment Construction

[0063] The following description is merely exemplary in nature and is in no way intended to limit the present disclosure, its application or its uses. For clarity, the same reference numbers are used in the drawings to identify similar elements. As used herein, the phrase "at least one of A, B, and C" should be interpreted as using a non-exclusive logical OR (A or B or C). It should be understood that the steps in the method may be performed in a different order without changing the principle of the present disclosure.

[0064] As used herein, the term "module" refers to an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or grouped) that executes one or more software programs or firmware programs, and memory, combination Logic circuits, and / or other suitable components that provide the described functions.

[0065] Refer now figure 1 , Shows a system including an engine 14, an electric variable transmission 10, a control syst...

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Abstract

A system and method for monitoring the stability of a hybrid powertrain system includes monitoring the system and its subsystems output response signals to its inputs to identify the system operating status. For example, for a hybrid powertrain system equipped with an electrically variable transmission (EVT), three signals are monitored. They are the two electrical motor speeds representing the direct subsystem response to their feedback control inputs and the EVT output speed representing the entire system's response. A stability monitoring system includes a mean determination module that determines a mean signal of the signals and an oscillation determination module that determines a signal oscillation signal based on the instant signal and the mean signal. The monitoring system also includes a signal mean crossing determination module that determines the signal crossing its mean signal and the oscillation peak detection, storage and comparison modules that determines system instability indicators for the control system to take corrective actions.

Description

[0001] Cross references to related applications [0002] This application claims the rights of U.S. Provisional Application No. 61 / 229,927 filed on July 30, 2009. The entire disclosure of the aforementioned application is incorporated herein by reference. Technical field [0003] The present disclosure generally relates to hybrid vehicles, and more specifically, to a method and system for monitoring the powertrain of a hybrid vehicle. Background technique [0004] The background description given here is used to introduce the background of the present invention in general. To the extent described in this background section, the works of the inventor currently signed and this description do not constitute aspects of the prior art at the time of application, and are neither expressly nor impliedly regarded as the prior art of the present invention. technology. [0005] Hybrid vehicles generally have two power sources. The internal combustion engine is the first power source, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/365B60K6/54B60W10/04B60W10/10B60W20/00
CPCY02T10/6239B60W30/20F16H2037/106F16H2061/0078B60L2240/486B60W2510/104F16H2061/6603F16H2037/102B60L2240/421B60W50/04F16H2057/0012Y02T10/642B60W20/00B60W2510/081B60K6/445Y02T10/62Y02T10/64B60W20/30B60W10/08
Inventor H·夏
Owner GM GLOBAL TECH OPERATIONS LLC
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