悬架性能匹配试验台设计
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摘要
为满足中小汽车零部件厂商对于悬架性能测试的需求,根据汽车1/4悬架振动系统模型,结合汽车悬架性能测试的要求设计了悬架性能匹配试验台的机械系统及测控系统。机械系统部分,试验台通过采用飞轮加凸块的凸轮机构进行激励,保证了转矩需求同时满足了对模拟路面激励频率、不同激励形式的要求。测控部分采用了基于VC++的测控系统设计,采用多线程并行的结构实现包括变频器控制、数据采集、数据实时显示、数据处理等功能。采用了基于Modbus协议的计算机与变频器串行数据通讯实现激振频率改变,提高了检测效率。经验证,试验台可达到悬架性能匹配测试及相关部件测试的要求,工作稳定,操作方便。
In order to meet the requirement for the suspension performance test of small and medium car parts manufacturers,the mechanical system and measurement&control system of the suspension performance matching test stand are designed according to the model of the 1/4 suspension vibration system and the requirements of the performance test of the vehicle suspension. In the mechanical system part,the test bench was driven by the cam mechanism with a flywheel adding a convex block,which ensured the torque demand and met the requirements of different frequencies and forms excitation for simulated pavement. The measurement and control system based on VC++ and multi-threaded parallel structure to realize functions of frequency converter control,data acquisition,data real-time display,data processing etc. The measurement and control system used the serial communication between computer and inverter based on Modbus protocol to realize the change of the excitation frequency and improved the detection efficiency. It was verified that the test bench can meet the requirements of suspension performance matching test and test of related component,which was stable and easy to operate.
In order to meet the requirement for the suspension performance test of small and medium car parts manufacturers,the mechanical system and measurement&control system of the suspension performance matching test stand are designed according to the model of the 1/4 suspension vibration system and the requirements of the performance test of the vehicle suspension. In the mechanical system part,the test bench was driven by the cam mechanism with a flywheel adding a convex block,which ensured the torque demand and met the requirements of different frequencies and forms excitation for simulated pavement. The measurement and control system based on VC++ and multi-threaded parallel structure to realize functions of frequency converter control,data acquisition,data real-time display,data processing etc. The measurement and control system used the serial communication between computer and inverter based on Modbus protocol to realize the change of the excitation frequency and improved the detection efficiency. It was verified that the test bench can meet the requirements of suspension performance matching test and test of related component,which was stable and easy to operate.
引文
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[2]司云飞.悬架匹配试验台设计及应用研究[D].成都:西华大学,2016.
[3]Samant Saurabh Y,Kumar Santosh,Kaushal Kamal Jain,et al.Design of suspension system for formula student race car[J].Procedia Engineering,2016,144:46-48.
[4]张邦成,王占礼,邵春平,等.汽车离合器从动盘拖曳分离测试机设计[J].制造业自动化,2007(4):30-32.
[5]长春汽车研究所.GB/T 4970-1996,汽车平顺性随机输人行驶试验方法[S].
[6]上海汽车底盘厂,长春汽车研究所,北京工业学校.QC/T 545-1999汽车筒式减振器台架试验方法[S].
[7]孙桓,陈作模,等.机械原理[M].7版.北京:高等教育出版社,2005.
[8]周占怀,茹秋生.振动测试方法及测试系统的研究[J].制造业自动化,2006(12):89-91.
[9]赵静.基于触摸屏和单片机共同控制的定位系统[J].自动化技术与应用,2007(12):103-105.
[10]陈静,罗坎,肖俊杰.基于API的PC机与多台变频器的串行通讯控制[J].日用电器,2011(3):37-39.
[11]赵静.基于触摸屏和单片机共同控制的定位系统[J].自动化技术与应用,2007(12):103-105.
[12]徐进,李林.基于Visual C++的变频器通讯程序的研究[J].组合机床与自动化加工技术,2002(9):51-52.
[13]孟昭荣,江立辉,胡兴伟,等.基于VC多线程的实时数据采集系统[J].舰船防化,2008(2):44-47.