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Powertrain modeling and engine torqu...
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Pan, Chung-Hung.
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Powertrain modeling and engine torque estimation using nonlinear observers.
紀錄類型:
書目-語言資料,印刷品 : Monograph/item
正題名/作者:
Powertrain modeling and engine torque estimation using nonlinear observers./
作者:
Pan, Chung-Hung.
面頁冊數:
229 p.
附註:
Source: Dissertation Abstracts International, Volume: 56-05, Section: B, page: 2742.
Contained By:
Dissertation Abstracts International56-05B.
標題:
Engineering, Automotive. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9524513
Powertrain modeling and engine torque estimation using nonlinear observers.
Pan, Chung-Hung.
Powertrain modeling and engine torque estimation using nonlinear observers.
- 229 p.
Source: Dissertation Abstracts International, Volume: 56-05, Section: B, page: 2742.
Thesis (Ph.D.)--The University of Wisconsin - Madison, 1995.
The need for improvements in the on-line estimation of vehicle performance variables is greater nowadays as a result of more stringent emission control legislation and performance requirements. Two model-based Sliding Mode engine load torque observers, with and without integrators, are developed to improve on-board diagnostics to detect different types of malfunctions without additional expensive sensor installations. Along with the observers, an engine model and a transmission system model are also derived.Subjects--Topical Terms:
1018477
Engineering, Automotive.
Powertrain modeling and engine torque estimation using nonlinear observers.
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Powertrain modeling and engine torque estimation using nonlinear observers.
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229 p.
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Source: Dissertation Abstracts International, Volume: 56-05, Section: B, page: 2742.
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Supervisor: John J. Moskwa.
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Thesis (Ph.D.)--The University of Wisconsin - Madison, 1995.
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The need for improvements in the on-line estimation of vehicle performance variables is greater nowadays as a result of more stringent emission control legislation and performance requirements. Two model-based Sliding Mode engine load torque observers, with and without integrators, are developed to improve on-board diagnostics to detect different types of malfunctions without additional expensive sensor installations. Along with the observers, an engine model and a transmission system model are also derived.
520
$a
An engine model with time-varying inertia is developed using the Lagrangian approach. This engine model is capable of compensating for the velocity-related inertia torque and calculating more accurate engine performance estimations, especially for engines operating at high speeds. For constant inertia engine models, a methodology using the least squares method to compute an optimal constant inertia value is proposed. The advantages and disadvantages of both methods: the least squares method and the traditional average method are discussed. A transmission system model for the Ford Automatic Overdrive (AOD-E) system is developed using the Newtonian approach. The transmission model incorporates all rotating inertial components, including a Ravigneaux planetary gear set, a hydraulic control system, and the torque converter assembly with a direct-drive lock-up clutch. The transmission system model is capable of simulating both transient and steady-state operations.
520
$a
By combining the engine and the transmission system models, two Sliding Mode engine load torque observers, with and without integrators, are developed and tested through computer simulations. The Sliding Mode observer is known for its ability to compensate noises as well as modeling errors. Several possible modeling error sources of the observers are discussed. An algorithm for selecting the linear gain and the switching gain matrices for the Sliding Mode observers are presented. The stability and robustness criteria of the observers are also presented. Moreover, the effects of switching gain changes on the observer are examined.
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The results of computer simulations show the robustness and adequacy of the observers under various modeling errors and operation situations. Without additional sensor installations, the observers present an inexpensive alternative to enhance vehicle on-line diagnostics ability.
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School code: 0262.
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http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9524513
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