Modeling and Analysis of Synchronization Error of Double-drive Feed System
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摘要: 以数控铣床工作台进给系统为研究对象,通过分析双丝杠进给结构机械特性,并考虑工作台所受摩擦力,建立了同步误差理论模型。利用MATLAB/Simulink模块求解,分析结构参数等因素对同步误差的影响趋势。通过实验测得工作台分别在匀速运动和S形曲线运动下的同步误差,并与理论计算相比较。结果表明:进给系统同步误差是由几何误差导致的扭转角和运动过程中工作台两侧结构参数的不同共同作用产生的,所建的模型对同步误差有较准确的预测。Abstract: According to the feed system of a CNC machine center, based on the analysis of mechanical properties of a double-drive ball screw feed system, with the friction of its worktable considered, the theoretical model of synchronization error is developed and solved by MATLAB/Simulink. The impact of structural parameters and other factors on the synchronization error is analyzed. The synchronization error of the worktable under uniform motion and S-shaped curve motion is measured with experiments and compared with the results of the theoretical model. The results show that the synchronization error of the feed system is caused by the twist angle due to the geometric error and different structural parameters of the two sides of the worktable during movement. The model can predict well the synchronization error.
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[1] 程瑶,梁滔,赵万华.动梁式龙门机床双轴同步系统的模型建立及不同步误差分析[J].机械工程学报,2013,49(13):174-182 Cheng Y, Liang T, Zhao W H. Non-synchronous error and modeling of dual-drive system in gantry-type machine tools with travelling bridge[J]. Journal of Mechanical Engineering, 2013,49(13):174-182(in Chinese) [2] 李玉霞,赵万华,程瑶,等.动梁式龙门机床的双驱同步控制系统建模[J].西安交通大学学报,2012,46(4):119-124 Li Y X, Zhao W H, Cheng Y, et al. Synchronous control system modeling of gantry-type machine tools[J]. Journal of Xi'an Jiaotong University, 2012,46(4):119-124(in Chinese) [3] Teo C S, Tan K K, Lim S Y, et al. Dynamic modeling and adaptive control of a H-type gantry stage[J]. Mechatronics, 2007,17(7):361-367 [4] He W Y, Tang X Q, Yang L. Synchronization control of biaxial electric coordination[C]//Proceedings of the 2nd International Conference on Computer and Automation Engineering. Singapore:IEEE, 2010,4:605-609 [5] Cheng Y, Qin H C, Quan J Z. Synchronized control of dual linear motors position servo system based on multi-axes motion control card[J]. Advanced Materials Research, 2012,433-440:7152-7158 [6] García-Herreros I, Kestelyn X, Gomand J, et al. Model-based decoupling control method for dual-drive gantry stages:a case study with experimental validations[J]. Control Engineering Practice, 2013,21(3):298-307 [7] 程瑶,赵万华,李玉霞,等.动梁式龙门机床双驱动态不同步误差补偿研究[J].中国机械工程,2013,23(8):915-919 Cheng Y, Zhao W H, Li Y X, et al. Research on compensation of dynamic non-synchronous errors of dual-drive system in gantry-type machine tools[J]. China Mechanical Engineering, 2013,23(8)::15-919(in Chinese) [8] Lu H, Xie S T, Wang Y. Servo control system of NC modifying forming grinding wheel based on cross coupling theory[J]. Advanced Materials Research, 2013,823:80-83 [9] Quan J Z, Wang Y H, Yin Z P. Design and implement of synchronizing dual-drive gantry based on multi-axes motion control card[C]//Intelligent Robotics and Applications. Berlin, Heidelberg:Springer, 2008,5315:388-397 [10] Kim S, Chu B, Hong D, et al. Synchronizing dual-drive gantry of chip mounter with LQR approach[C]//Proceedings of 2003 IEEE/ASME International Conference on Advanced Intelligent Mechatronics. Kobe, Japan:IEEE, 2003:20-24 [11] 陈琳,程正波,黄炳琼,等.伺服增益不匹配的双轴同步误差补偿策略[J].中国机械工程,2016,27(11):1502-1507 Chen L, Cheng Z B, Huang B Q, et al. Synchronization error compensation strategies in dual-drive system for servo gain mismatch[J]. China Mechanical Engineering, 2016,27(11)::502-1507(in Chinese) [12] 陈琳,程正波,钟文,等.基于伺服响应差异的龙门双轴同步误差产生研究[J].机械设计与制造,2016,(5):118-121 Chen L, Cheng Z B, Zhong W, et al. Studying the synchronization error generation based on different responses of servo systems in dual-drive system of gantry structure[J]. Machinery Design & Manufacture, 2016,(5):118-112(in Chinese) [13] 谢黎明,杨晓瑛,靳岚.考虑负载重心变化的双驱进给系统不同步误差分析[J].现代制造工程,2016,(1):82-87 Xie L M, Yang X Y, Jin L. Non-synchronous error analysis of dual-driving feed system considering the change of the center of gravity of the load[J]. Modern Manufacturing Engineering, 2016,(1):82-87(in Chinese) [14] 夏阳雨,程寓,倪玉晋,等.双驱进给系统热误差仿真分析及试验[J].组合机床与自动化加工技术,2016,(5):71-74 Xia Y Y, Cheng Y, Ni Y J, et al. Measurement and analysis of thermal error in dual-drive feed system[J]. Modular Machine Tool & Automatic Manufacturing Technique, 2016,(5):71-74(in Chinese) [15] 袁慧娟.铣车复合加工中心双驱进给系统同步热误差分析[D].兰州:兰州理工大学,2012 Yuan H J. The thermal error analysis on mill-turn CNC double drive feeding system[D]. Lanzhou:Lanzhou University of Technology, 2012(in Chinese)
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