机械加振式减震器示功试验台的误差修正  

Error correction for mechanical shock absorber dynamometer test stand

作　　者：单春贤[1] 孙鲁城 陈晓东 

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013 [2]无锡市出入境检验检疫局,江苏无锡214001

出　　处：《扬州大学学报（自然科学版）》2015年第1期20-23,共4页Journal of Yangzhou University：Natural Science Edition

基　　金：国家质量监督检验检疫总局科研项目资助(2012IK090)

摘　　要：针对曲柄滑块机构加振式减震器示功试验台,分析并修正由于加振波形为近似简谐运动造成的误差,提出修正方法并利用MATLAB/Simulink软件所建立的减震器模型验证修正方法的正确性.曲柄连杆比r/l为0.1时,最大阻尼力点对应的位移误差占到总行程的2.43%,误差的修正可以有效地保证曲柄滑块机构加振采用较小连杆长度时的测试精度,通过在数据采集软件中进行补偿计算,节省了更换测试设备的成本.修正实测示功图后,误差可以控制在1%左右.The author analyses and corrects the errors due to approximate simple harmonic motion waveform for the crank-slider mechanism vibration damper dynamometer test stand. A correction method is proposed and its correctness is verified by the use of the damper model based on MATLAB/Simulink. When the ratio of the length of crank and connecting rod length equals to 0. 1（r/l= 0.1）, the maximum damping force point corresponding to the displacement error reaches 2.43% of the total stroke. Correction can effectively guarantee the accuracy of the test when the connecting rod length of the crank-slider mechanism is very short. By compensation calculation with the data acquisition software, the cost for replacing the test equipment is saved. After correcting the measured dynamometer, the error can be controlled within 1%.

关 键 词：减震器 示功试验台 误差修正 曲柄滑块机构 

分 类 号：TH113.2[机械工程—机械设计及理论] U464.133[机械工程—车辆工程]