主動式無段變速系統實驗平台設置與研究

Experimental platform of Active Continuously Variable Transmission System Design and Study

黃俊瑋(Jiun-Wei Huang)

指導教授 ： 郭桂林

國立臺北科技大學/機電學院/車輛工程系所/碩士(2009年)

https://doi.org/10.6841/NTUT.2009.00082

摘要

無段變速系統是近年來車用傳動系統發展的重點，因此許多車廠和學者都積極投入此系統的研究。目前應用於一般車輛上的無段變速系統主要由感測器傳遞車速、油門開度等重要參數來決定此系統的液壓大小並改變減速比，此種方式使內燃機較無法維持在較佳燃油消耗運轉線。主動式無段變速系統則可精密控制電磁閥及其液壓大小，進而控制所需的減速比讓內燃機維持在較佳運轉線，提升內燃機的效率與降低油耗的損失。
本研究使用自行設計的主動式無段變速系統實驗平台進行實驗，同時針對此實驗平台應用LabVIEW軟體設計可作為監控程式的人機介面，並利用資料擷取系統( NI-USB 6229) 將實驗平台上各元件的類比訊號擷取後，透過人機介面即時監控各元件的運轉數據與輸出效率。本實驗也可依實驗平台上各元件的訊號與參數，進行三種標準行車型態的模擬分析測試(FTP75、NEDC2000及TAIPEI CITY)。藉著實驗平台所量測到金屬皮帶式無段變速系統的減速比、效率以及增加負載時主皮帶盤與副皮帶盤其油壓值的變化關係，可將主動式無段變速系統達到最佳化控制策略。
本研究結果顯示，本實驗平台可清楚的瞭解金屬皮帶式無段變速系統在各種行駛狀態下其油壓值變化關係。並且準確的提供主動式無段變速系統油壓控制參數，以達到有效控制其系統的減速比，並且找出符合最佳行車型態所需之性能參數。

關鍵字

主動式無段變速系統 ； LabVIEW ； 人機介面

並列摘要

The development of Continuously Variable Transmission system has been the mainly focused on the vehicles transmission system in recent years, leading to intensive research into this topic in many vehicle manufacturers and academic arena. The Continuously Variable Transmission systems currently used in general purpose vehicles mostly employ sensors to transmit data of key operational parameters, such as vehicle speed and throttle position for determining system’s hydraulic pressures and gear reduction ratios, thereby changing the speed of the vehicle. The drawback of this approach is that the internal combustion engine is unable to maintain a better fuel consumption line. By contrast, the Active-type Continuously Variable Transmission system is able to precisely control the solenoid valve and the hydraulic pressure in the vehicle, thereby controlling the gear ratio needed to maintain good fuel consumption line. Engine efficiency and fuel consumption reduction can thus be promoted.
In the present study, a self designed experiment platform of the Active-type Continuously Variable Transmission system was employed for conducting the experiments. Meanwhile, interaction of human-machine interface was monitored through LabVIEW software installed at the platform. In addition, the analog information of the operation data and the output efficiency generated by the various components on the platform were acquired via a data acquisition system, NI-USB 6229, to analyze the three standard types of vehicle moving simulation, i.e., FTP75, NEDC2000 and TAIPEI CITY. Through the experiment platform, the measured speed reduction ratio associated with the steel-belt type Continuously Variable Transmission system, the efficiency, as well as the variation relationship of hydraulic pressure between main belt wheel and auxiliary belt wheel during load increasing can be used to formulate an optimum control strategy for the Continuously Variable Transmission system.
The result of the present study demonstrated that the experiment platform proposed herein could: (1) clearly measure the variation of the hydraulic pressure under various vehicle operating conditions, and (2) accurately provided the Active-type Continuously Variable Transmission system with the parameters of the hydraulic pressure for controlling the various speed reduction ratios as well as finding out the most suitable performance parameters for best vehicle operating condition.

並列關鍵字

Active-type Continuously Variable Transmission system ； LabVIEW ； human machine interface

參考文獻

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