摘 要

本論文研究的是汽車操縱穩(wěn)定性轉(zhuǎn)向回正性試驗數(shù)據(jù)處理研究。汽車的轉(zhuǎn)向回正性是評價汽車操縱穩(wěn)定性的一個重要指標。一輛沒有回正能力的汽車,或基本上回不到正中(即有較大的殘余橫擺角速度)、或回正過程中行駛方向往復(fù)擺動的汽車,都是令人不滿意的。為了提高汽車的操縱穩(wěn)定性，就必須使汽車的轉(zhuǎn)向回正性能優(yōu)越，才能提高汽車的整體性能。由于操縱穩(wěn)定性轉(zhuǎn)向回正試驗測試結(jié)果數(shù)據(jù)繁多，數(shù)據(jù)處理過程復(fù)雜，如果僅靠人工利用現(xiàn)有通用軟件進行數(shù)據(jù)處理，不僅耗費大量的人力和時間，而且很難使處理結(jié)果規(guī)范統(tǒng)一。數(shù)據(jù)處理大大加重了試驗人員的工作負擔(dān)，因此需要開發(fā)專門的軟件對操縱穩(wěn)定性的試驗數(shù)據(jù)進行快速統(tǒng)一的處理，獲得滿足測試報告所需的準確規(guī)范的數(shù)據(jù)處理結(jié)果。我們根據(jù)國家標準GB/T 6323.4-94《汽車操縱穩(wěn)定性試驗方法轉(zhuǎn)向回正性能試驗》，分析試驗所需要記錄的數(shù)據(jù)及試驗數(shù)據(jù)處理要求，提出試驗數(shù)據(jù)的自動處理方案，采用delphi7開發(fā)試驗數(shù)據(jù)自動處理軟件，為汽車的轉(zhuǎn)向回正性能數(shù)據(jù)處理提供方便。本課題采用delphi7編寫程序 ，使達到如下功能：待處理數(shù)據(jù)輸入、結(jié)果數(shù)據(jù)輸出；按照標準進行數(shù)據(jù)處理和試驗評價；原始數(shù)據(jù)的圖形顯示及截取；試驗報告自動生成。


關(guān)鍵詞：汽車轉(zhuǎn)向回正性，自動處理軟件，delphi7














ABSTRACT

This paper is on the stability of vehicle Steering Wheel Returnability tentative test data processing.The returnability tentative is an important indicator to the eva luation of the stability of vehicle operation. It is unsatisfactory if an automobile without returnability, or basically back to less than the median （i.e. a greater residual swaying angular velocity, or in the direction of reciprocation swinging on the automobile during the returnability process. In order to improve automobile operation stability, we must make the returnability tentative superior, which can improve the car's overall performance. Because of the numerous test data and the complex data processing in the stability of vehicle operation and returnability tentative test, if we only depend on the manual use of existing general software for data prcessing that may cause not only massive manpower and time consumption but the difficulty to standardize the results of reunification. The data processing aggravated the work burden greatly, therefore we need to develop a specialized software to handle the fast unification processing of the stability of vehicle operation test data; then meet the accurate standardized data-processing results for required test report. According to the national standards GB / T 6323.4-94 “Automobile Operation Stability Test Method and Returnability Tentative Test ”，we analyzes the data which need to be record and the request of data processing request, proposed an automatic data processing programmes, uses the delphi7 development automatic processing software, providing convenience for returnability tentative test data processing. This topic uses delphi7 written program to achieve the following functions: to deal with data input and data results output; to be in accordance with the standards for data processing and test eva luation; raw data graphics and interception; automatically generated test report.


Key words： Steering Wheel Returnability, automatic processing software, delphi7








目 錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 1
1.1 汽車的轉(zhuǎn)向回正性能 1
1.1.1汽車操縱穩(wěn)定性概述 1
1.1.2汽車操縱穩(wěn)定性的客觀試驗 1
1.1.3轉(zhuǎn)向回正性的概念 1
1.1.4轉(zhuǎn)向回正試驗 1
1.2課題的提出 2
1.3汽車轉(zhuǎn)向回正性能試驗數(shù)據(jù)自動處理系統(tǒng) 3
1.4本論文所作工作 3
2轉(zhuǎn)向回正性能試驗方法及標準 5
2.1轉(zhuǎn)向回正性研究及評價 5
2.1.1轉(zhuǎn)向回正性的研究 5
2.1.2試驗的評價方法 5
2.2轉(zhuǎn)向回正性的試驗標準GB/T 6323.4-94 6
2.2.1測量變量 6
2.2.2試驗條件 6
2.2.3試驗方法 7
2.2.4試驗我據(jù)處理與結(jié)果表達 7
2.3汽車操縱穩(wěn)定性指標限值與評價方法QC/T480-1999 10
3汽車轉(zhuǎn)向回正性自動處理軟件設(shè)計分析 12
3.1開發(fā)工具的選擇 12
3.1.1 Delphi介紹 12
3.1.2 Delphi7的特點 12
3.2系統(tǒng)應(yīng)用需求分析 12
3.3系統(tǒng)功能結(jié)構(gòu)框架圖 13
3.4系統(tǒng)功能 14
3.4.1試驗數(shù)據(jù)輸入 14
3.4.2歷史試驗數(shù)據(jù)的處理 14
3.4.3查看低速圖形和高速圖形 14
3.4.4快速生成試驗報告書功能 14
4應(yīng)用軟件設(shè)計 15
4.1系統(tǒng)的界面設(shè)計 15
4.1.1歡迎窗體的設(shè)計 15
4.1.2轉(zhuǎn)向回正數(shù)據(jù)處理窗體 15
4.2代碼設(shè)計 17
4.2.1導(dǎo)入數(shù)據(jù)設(shè)計 17
4.2.2截取數(shù)據(jù)設(shè)計 19
4.2.3數(shù)據(jù)計算設(shè)計 20
4.2.4結(jié)果評分設(shè)計 20
4.2.5查看圖形設(shè)計 21
4.2.6生成報告設(shè)計 22
4.3數(shù)據(jù)格式 23
5轉(zhuǎn)向回正性數(shù)據(jù)自動處理軟件 25
5.1應(yīng)用軟件的實現(xiàn)功能 25
5.1.1導(dǎo)入低速和高速數(shù)據(jù) 25
5.1.2數(shù)據(jù)選取 26
5.1.3截取數(shù)據(jù) 27
5.1.4數(shù)據(jù)計算 28
5.1.5結(jié)果評分 28
5.1.6后續(xù)步驟 29
5.2本章小節(jié) 31
6 結(jié)論 32
6.1課題介紹 32
6.2總結(jié) 32
致 謝 34
參考文獻 35