伺服控制电子吊秤机械安全检测装置研究
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摘要
电子吊秤机械安全特性主要包含极限载荷和低频动态疲劳两项指标,为解决其检测问题,设计一套专用的检测装置。该装置采用伺服电机直接驱动油泵分别向静态油缸和动态油缸交互供油的方式,动态地调整伺服电机的转矩、转速及旋转方向,通过动、静油缸的压力产生较为稳定的极限载荷和低频动态载荷施加在电子吊秤上。实验结果显示:该试验装置产生的静态极限载荷误差≤±1%、低频动态载荷峰值误差≤±2%,能满足电子吊秤的机械安全性能检测。
In order to detect the ultimate loads and low frequency dynamic fatigue loads which are the two major safety indicators for electronic hanging scale, a specially designed electronic hanging scale testing devices was introduced in this paper. Driven by servo motor, hydraulic oil was pumped into static and dynamic cylinder separately which dynamically adjusted the torque,speed and direction of rotation of the servo motor. As such,a more stable limited loads and low dynamic loads was guaranteed by the pressure difference between static and dynamic cylinders.According to the experiment,by using this device,a static ultimate load error less than ±1% and the low frequency dynamic peak error of less than ±2% was obtained. Hence,this device meets the requirements of electronic hanging scale safety test.
In order to detect the ultimate loads and low frequency dynamic fatigue loads which are the two major safety indicators for electronic hanging scale, a specially designed electronic hanging scale testing devices was introduced in this paper. Driven by servo motor, hydraulic oil was pumped into static and dynamic cylinder separately which dynamically adjusted the torque,speed and direction of rotation of the servo motor. As such,a more stable limited loads and low dynamic loads was guaranteed by the pressure difference between static and dynamic cylinders.According to the experiment,by using this device,a static ultimate load error less than ±1% and the low frequency dynamic peak error of less than ±2% was obtained. Hence,this device meets the requirements of electronic hanging scale safety test.
引文
[1]王佳,杨金生.基于ATA的起重机械金属结构安全性评价研究[J].机械研究与应用,2013(1):5-8.
[2]电子吊秤:GB/T 11883——2002[S].北京:中国标准出版社,2002:2-8.
[3]李斌,雷利,邹彩侠,等.塔式起重机结构疲劳寿命的研究[J].沈阳建筑大学学报,2010(5):986-989.
[4]尚贤平,费利萍,余松青,等.基于起重机配合使用的电子吊秤机械安全测试方法研究[J].衡器,2014(3):46-49.
[5]李庆坚.交流伺服系统结构及原理[J].科技信息,2010(7):74-81.
[6]轴向加荷疲劳试验机:JJG 556——2011[S].北京:中国质检出版社,2011:4-5.
[7]倪守忠,李海根.多油缸叠加式力标准装置[J].衡器,2010(5):49-52.
[8]莫会成.永磁交流伺服电机转矩波动分析[J].微电机,2007(3):1-4.
[9]郑光伟.PID控制器参数动态整定方法在疲劳试验机上的应用[J].有色矿冶,2009(2):39-42.
[10]路华,任胜军,王永章.以交流伺服电机为执行元件的张力控制系统[J].制造业自动化,2004(6):8-12.
[2]电子吊秤:GB/T 11883——2002[S].北京:中国标准出版社,2002:2-8.
[3]李斌,雷利,邹彩侠,等.塔式起重机结构疲劳寿命的研究[J].沈阳建筑大学学报,2010(5):986-989.
[4]尚贤平,费利萍,余松青,等.基于起重机配合使用的电子吊秤机械安全测试方法研究[J].衡器,2014(3):46-49.
[5]李庆坚.交流伺服系统结构及原理[J].科技信息,2010(7):74-81.
[6]轴向加荷疲劳试验机:JJG 556——2011[S].北京:中国质检出版社,2011:4-5.
[7]倪守忠,李海根.多油缸叠加式力标准装置[J].衡器,2010(5):49-52.
[8]莫会成.永磁交流伺服电机转矩波动分析[J].微电机,2007(3):1-4.
[9]郑光伟.PID控制器参数动态整定方法在疲劳试验机上的应用[J].有色矿冶,2009(2):39-42.
[10]路华,任胜军,王永章.以交流伺服电机为执行元件的张力控制系统[J].制造业自动化,2004(6):8-12.