論文名稱:

自行車輪胎性能測試機之研製

Design of Bicycle Tire Performance Test Machine

研究生:

趙孟泉 Meng-Chuan Chao

指導教授:

顏鴻澤 Hong-Tzer Yan

學位類別:

碩士

學校名稱:

建國科技大學

系所名稱:

機械工程系暨製造科技研究所

學號:

99017001

畢業學年度:

100

語文別:

中文

出版年:

民101

關鍵字:

滾動阻抗 Rolling resistance

輪胎性能測試 Tire performance tests

功率法 Power method

摘要:

一般自行車輪胎製造廠商，針對自行車輪胎性能測試皆聘請專業車手，以實際騎乘方式之自我感覺作為輪胎性能參考依據，此較為主觀。所以如何提供消費者在選購自行車輪胎時，能以科學量化之輪胎性能數據，作為購買時之參考依據，是自行車輪胎製造廠商重要的課體。因此如何研發一部具測試滾動性能之多功能自行車輪胎性能測試機 ，更是自行車輪胎製造廠商當務之急。

現有輪胎性能測試主要針對汽車、機車等輪胎。至於自行車輪胎性能測試，因自行車及自行車輪胎荷重較輕，其滾動性能量測困難，故市售自行車輪胎主要測試功能一般只有剎車系統及輪胎磨耗檢測。因此，本文提出以一永磁式直流馬達作為動力源，轉動自行車輪胎，經由高精度功率儀器量測的方法，完成量測馬達輸出功率，並由電腦擷取數據資料經運算求得滾動阻抗及馬達輸出扭力值的目的。本研究更應用滾動阻抗量測之功能，依可變負載模擬騎乘者重量，以探討荷重對輪胎滾動阻抗之影響；以伺服調壓閥精確控制胎壓，以探討胎壓對輪胎滾動阻抗之影響；探討輪胎花紋、胎寬及胎面材料等因素對於滾動阻抗之影響；本研究並研發完成一部具測試滾動性能之多功能自行車輪胎性能測試機。

Bicycle tire manufacturers normally put the performance of their tires to tests by professional bicyclists who hit the road or a mountain trail and ask them how they feel about the tires as the reference of the performance of their tires. In this way, the subjective experiences are likely to be prone to individual bias or gaps in knowledge. Thus, it is important for bicycle tire manufacturers to provide scientifically quantified performance data for consumers’ reference at the time of purchase. Furthermore, it should be a matter of urgent priority to develop a testing device that simulates performance over a variety of road conditions.

Most of tire testing devices are designed for automotive and motorcycle tires. Bicycles and bicycle tires are lighter and thus it is kind of difficult to assess the rolling performance. Currently, only tire wear and brakes are checked for bicycle tire performance.

The purpose of the study is to use a permanent magnet DC motor to rotate the bicycle tire, measure the motor output through the precision power measurement instrument, and retrieve data from the computer to obtain the rolling resistance and motor output torque.

With the determination of rolling resistance, the study examines the impact of loads on the rolling resistance by applying variable loads to simulate the rider’s weight. The study also investigates the effect of tire pressure on the rolling resistance by controlling precisely the tire pressure with a servo pressure regulator. The study finally attempts to conclude the influence of treads, tire width and tire materials on the rolling resistance and develop a multiple-purpose tire testing device that is capable of measuring the rolling resistance.