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characteristics point E the largest displacement, but the speed is zero. Feature points in different vibration frequency calculation, the precision is different, such as point A and point C than at point B and D Greater uncertainty, because the two points A and C the speed of 0, that x in the vicinity of these two changes in level. Therefore, if x maximum points for the criterion of looking for A or C errors. In contrast, point B and point D the larger changes in the vicinity of x, therefore, 本科生畢業(yè)設(shè)計(論文) 29 choose to feature point B and point D will be calculated more accurately the vibration cycle. Point B and point D。 Feature Point C displacement of the smallest, but the speed is zero。 大學學習生活中, XXXX 學院各位老師在學業(yè)上給我的指導,尤其是各位老師一絲不茍的治學風范對我的影響很大;在 畢業(yè)設(shè)計 過程中,各位老 師給予了大力的支持和幫助,并就 設(shè)計 中的部分問題和處理方法共同進行了有益的探討,在此一并向他們致以誠摯的謝意!在此也對審閱和評議本 畢業(yè)設(shè)計 及答辯老師和教授致以崇高的敬意和誠摯的感謝! 最后,對在大學期間關(guān)心與幫助過我的其他所有人表示感謝! 、 本科生畢業(yè)設(shè)計(論文) 25 附錄 一 Hydraulic shock absorber test bench and applied research on the transformation Preface Hydraulic shock absorber, vehicle suspension system ponents in the main damping, The quality of their performance is directly related to vehicle safety and fort. Hydraulic shock absorber by the performance of the main characteristics that, Characteristics of the shock absorber shock absorber means with relative movement of the displacement or relative velocity with the corresponding resistance resulting from the work of the relationship between, The relationship between these two indicator known as the shock absorber characteristics and speed characteristics. Shock absorber to improve the performance, To ensure the quality, In addition to advanced design, production process, Means of modern management, As well as advanced test and test equipmentTo detect characteristics of the shock absorber with the design requirements, Commonly used testbed general hydraulic shock absorber for dualcolumn structure, The lower cost structure, Small footprint. Jiangxi, a shock absorber in accordance with the requirements of the production plant, In its original twocolumn structure of the hydraulic shock absorber on the basis of testbed transformation. The redesign of the puter detection system, And the application of the shock absorber shock absorber test bench analysis of the quality of the process methodology. This article describes the main technical. 1 Testbed design of the puter detection system 1 ? 1 System Components Imposed on the shock absorber test bed approach is inspired in its one end to impose similar to simple harmonic movement, In this study, using a simple structure, Easy to implement on the heart of the crank linkage system as an incentive. According to the original testbed instability detection system performance, Graphic distortion characteristics and the speed the more serious the situation is not convenient, The redesign of the puter detection system, System Components Figure 1, The system 本科生畢業(yè)設(shè)計(論文) 26 uses microputer as the main monitoring and control machines, Optional PS2112 16 Road, A / D conversion board and travel as a shock absorber damping force of the two ADC signal, The converter board is programmable interface board, Its resolution of 12, Conversion time of about 25μs, Of 5 ~ +5 V analog signal for analogtodigital conversion, Systematic error of less than 0 ? 1%, to ensure that the detection accuracy. Shock absorber damping force sensor using strain la (pressure) force sensor, Can be used for different force sensor to change the measuring range, Can be used for different force sensor to change the measuring range, Strain gauge used for the preamplifier, Output of 5 ~ +5 V, Measuring accuracy of less than 0 ? 5%. Damper displacement sensor using a differential transformer type displacement sensor, For different displacement sensor can change the maximum range, Output voltage of 5 ~ +5 V, Determination of the accuracy of displacement is less than 0 ? 5%, FM is used in a certain scope for regulating frequency vibration table, Excitation in order to adjust the speed, you can both by regulating the shaking table of the relative position of flange exciting journey to change in order to adjust the speed of vibration, speed adjustment range of excitation 0 ~ 1 ? 2m / s. System features include: system ready to test the query, the structure of output, the system calibration, analysis and test results from the system. 1 ? 2 body motion error pensation In accordance with the provisions of China39。 [9] 汽車標準匯編(第四卷) .中國汽車技術(shù)研究中心標準化所, 1990 [10] 徐繼 . 筒式減震器 . 汽車與配件 , 1982,(04) [11] 唐通鳴 . 汽車減震器扭轉(zhuǎn)疲勞試驗機改進設(shè)計 . 機械設(shè)計與制造工程 , 1998,(06) [12] 試驗技術(shù)與試驗機 2020 年總索引 . 試驗技術(shù)與試驗機 , 2020,(Z2) [13] 彭觀明 , 張愛梅 . 簡式液壓減震器試驗系統(tǒng)簡介 . 摩托車技術(shù) , 2020,(12) [14] 包鐵成 , 趙濤 . 減震器測試在產(chǎn)品質(zhì)量控制中的 作用 . 摩托車技術(shù) , 2020,(03) [15] 馮雪梅 , 汪偉 , 劉佐民 . 阻尼器試驗中的數(shù)據(jù)處理 . 湖北工業(yè)大學學報 , 2020,(03) [16] 郭華偉 .減振器實驗臺及其測控系統(tǒng)研究 [D].長沙 :中南大學 ,2020. [17] Thomas Szirtes, 曹元彪 . 正確選用阻尼器 . 礦山機械 , 1990,(03) [18] Manufacturing Systems Engineering[M].,1993. [19] Eureka .Bearing cross bears the load[M].. 本科生畢業(yè)設(shè)計(論文) 24 致謝 本 次畢業(yè)設(shè)計 是在 XXX 老師精心指導和大力支持下完成的。以一個拉壓復合彈簧實現(xiàn)正反載荷的交變作用,由于彈簧是軟連接,為防止運動方向產(chǎn)生改變,采 用導軌對機構(gòu)的運動加以限制,來保證始終做垂直往復運動。 圖 示功圖 本科生畢業(yè)設(shè)計(論文) 21 圖 近似簡諧波和標準正弦波運動規(guī)律的對比 本科生畢業(yè)設(shè)計(論文) 22 第八章 結(jié)論 我所設(shè)計的是基于動平衡減振器試驗臺,通過對國內(nèi)的發(fā)展情況,和學校實驗室實物的觀察,對其運動規(guī)律以及各部件之間的運 動和連接關(guān)系有了一定的了解。 顯然機 構(gòu)誤差包括位移誤差、速度誤差和相位誤差 ,并且誤差隨曲桿比變化而有所變化。信號經(jīng)過傳感器、 A/D 轉(zhuǎn)換等裝置進入測試系統(tǒng)的軟件分析系統(tǒng) ,從而繪制出示功圖(如圖 所示 )。見圖 61。 夾具主要由上橫梁擋板 、夾具體下座、 夾緊襯套、定位銷、連接螺栓、頂止凸輪、鎖止螺母 組成。 實驗臺在工作的工程中,電動機所受載荷為中等沖擊載荷。 聯(lián)軸器的分類 按聯(lián)軸器的性能分類可分為剛性聯(lián)軸器和撓性聯(lián)軸器。即只要在 m1 的對稱位置加一質(zhì)量為 kg的平衡塊即可消除 y向慣性力。 顯然附加質(zhì)量塊太大 ,經(jīng)分析發(fā)現(xiàn) ,要做到完全消除 2 個方向的慣性力 ,要么附加質(zhì)量 m3 、 m4 要很大 ,要么 H、 L 要很大。