【導(dǎo)讀】本次畢業(yè)設(shè)計的題目是基于動平衡減振器試驗臺。動系統(tǒng)中發(fā)揮著極其重要的作用。本試驗臺采用立式的布置方式。析；第八章，結(jié)論。本設(shè)計主要參考了減振器試驗臺相關(guān)的材料和內(nèi)容。計算所需要的主要參數(shù)，并對曲柄連桿機構(gòu)進行強度校核。使試驗臺達到安全標準。利用CAXA制圖，畫出。裝配圖和零件圖。結(jié)合書中所學(xué)知識及查閱相關(guān)資料，設(shè)計出動平衡減振器試驗

　　

【正文】 rsion, 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。s automotive industry standards, test standards imposed to deal with one shock absorber Jane inspired harmonic movement, on the basis of detection of the indicator properties of shock absorber, speed characteristics. Mechanical excitation current testbed body style crankconnecting rod mechanism used as an incentive system, and have a crankconnecting rod mechanism of movement is similar to simple harmonic motion, body movement is the error generated by the crank connecting rod mechanism similar to the standard simple harmonic motion simple harmonic motion deviation. Such deviations include the displacement deviation, speed deviation and phase 本科生畢業(yè)設(shè)計（論文） 27 deviation, according to testbed structure connecting rod crank size can be calculated similar to simple harmonic motion simple harmonic motion with standard deviation, Harmonic pared with the standard, similar to simple harmonic motion of its peak speed of large, phase lag (small phase angle). Body movement will lead to error indicator of the characteristics of shock absorber, speed and other characteristics of the deviation. Characteristics of indicator deviation pensation. Institutions and ideals and the actual movement of the displacement error is manifested in the phase error, the error in the indicator diagram of the embodiment of the two, one reflected in the relative vertical axis asymmetric, that is not the biggest point of the damping force is now the location of zero displacement At the same time, curve diagram showing the side of full, full enough on the other side, which is not conducive to an accurate analysis of the internal shock absorber quality, and to this end should be in accordance with the laws of phase error pensation interpolation amendment。 second is embodied in the same location , different values of the damping force. The reason for this is the same as the difference between the speed of position, Through various positions to achieve the speed of the amendment. Speed characteristics of the deviation pensation. Institutions and ideals of the actual error in the speed of the movement embodies the characteristic curves for different values of the damping force, in particular, the damping force is the biggest difference. The reason for this is the speed at different locations of the error. Incentives in the same frequency, the actual body velocity is greater than the velocity of the ideal body. In accordance with the laws of the speed of the interpolation error pensation amendment. Compensation measures for more than programmed in the test data is processed Now. 本科生畢業(yè)設(shè)計（論文） 28 1 ? 3 Shock Absorber vibration frequency identification and control methods Shock Absorber Dynamometer testing and speed characteristics, it is important to correct the rapid detection of vibration frequency in order to control the velocity of the shock absorber and sampling rate. Damper vibration frequency can be measured by testing instruments, and puter control, but this will increase the cost. The system uses the original manufacturers manual stepless speed regulation, and the methods used to manually adjust the governor in order to adjust the motor speed, adjust the damper to achieve the purpose of vibration frequency. System test software to calculate the vibration frequency, and frequency values on the puter screen in realtime display with manual frequency control damper. Determination of vibration frequency shock absorber is as follows. Figure 2 is a shock absorber test the crank connecting rod mechanism Taichung piston displacement x, velocity v crank angle α with the cyclical changes in the diagram, as long as you can to find campaign cycle to calculate the frequency of movement. A map feature point displacement of the largest, but the speed is zero。 feature point B displacement is zero, but the largest absolute speed。 Feature Point C displacement of the smallest, but the speed is zero。 D displacement of feature points to zero, but at the greatest value。 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