结合虚拟现实技术与电气控制技术,针对装配生产线的特点和控制要求,开发了一套虚拟仿真系统,可用于系统监控、调试和人员培训.利用罗克韦尔软件编写电气控制程序,通过RSTestStand软件搭建机械手自动装配系统的3D虚拟仿真模型,并基于虚拟可编程控制器(PLC),实现了直线型、余弦-直线型速度曲线调速方案在虚拟仿真对象上的应用.虚拟仿真对象的动作视觉效果和监控曲线表明,控制系统工作良好,通过在机械手各动作的启停、加减速、匀速转换时引入余弦调速方案对速度控制进行优化,有效减小机械臂关节的震动和顿挫,取得了较好的动作流畅性.
A virtual simulation system which is combines electrical control and virtual reality technology is proposed.The system’s monitoring,debugging and staff training for visual simulation process of industrial control applications are realized.The control program obtained by software of Rockwell is running on PLC.3D virtual simulation model of the automatic assembly system of manipulator is structured by the RSTestStand.To reduce mechanical arm joint motion and force effectively,acceleration and speed reduction of the manipulator movement and optimization of the speed using cosine timing scheme in uniform conversion were performed.The experimental verification of motion visual effect and real-time monitoring curve on the object of virtual simulation is achieved.
[1] 陶湘厅,袁锐波,罗碌.气动机械手的应用现状及发展前景[J].机床与液压,2007,8(8):226-228.DOI:10.3969/j.issn.1001-3881.2007.08.078. TAO X T,YUAN R B,LUO L.The applications and developments of the pneumatic manipulator[J].Machine Tool & Hydraulics,2007,8(8):226-228.DOI:10.3969/j.issn.1001-3881.2007.08.078.
[2] 李会,张劲松.虚拟现实技术在工业控制中的应用[J].微计算机信息,2006,22(25):74-75,134.DOI:10.3969/j.issn.1008-0570.2006.25.026. LI H,ZHANG J S.The application research of virtual reality technology in industrial control[J].Microcomputer Information,2006,22(25):74-75,134.DOI:10.3969/j.issn.1008-0570.2006.25.026.
[3] 赵沁平.虚拟现实综述[J].中国科学F辑:信息科学,2009,39(1):2-46. ZHAO Q P.A review of virtual reality[J].Scientia Sinica Informationis,2009,39(1):2-46.
[4] 师亚娟,刘欣.基于PLC的自动化生产线三自由度机械手控制系统设计[J].工业控制计算机,2013,26(6):112-113.DOI:10.3969/j.issn.1001-182X.2013.06.051. SHI Y J,LIU X.Control system of 3-dof mechanical arm of automatic production line based on PLC[J].Industrial Control Computer,2013,26(6):112-113.DOI:10.3969/j.issn.1001-182X.2013.06.051.
[5] 王月芹.基于PLC的机械手控制系统设计[J].液压与气动,2011(09):41-43.DOI:10.3969/j.issn.1002-6673.2012.05.054. WANG Y Q.Control system design of the manipulator based on PLC[J].Chinese Hydraulics & Pneumatics,2011(09):41-43.DOI:10.3969/j.issn.1002-6673.2012.05.054.
[6] 孙群,张龙,赵颖.基于虚拟样机技术的六自由度机械手建模与仿真[J].机械设计与制造,2013,7(7):178-181. DOI:10.3969/j.issn.1001-3997.2013.07.057. SUN Q,ZHANG L,ZHAO Y.Model and simulation for a 6-dof manipulator based on virtual machine technology[J].Machinery Design & Manufacture,2013,7(7):178-181.DOI:10.3969/j.issn.1001-3997.2013.07.057.
[7] 邹湘军,李静.采摘机械手虚拟设计与仿真系统的研究[J].系统仿真学报,2010,22(11):2748-2752. ZOU X J,LI J.Research on picking manipulator virtual design and simulation system[J].Journal of System Simulation,2010,22(11):2748-2752.
[8] ROSSEAU G,BAILES J.The Development of a virtual simulator for training neurosurgeons to perform and perfect endoscopic endonasal transsphenoidal surgery[J].Neurosurgery,2013,1(73):85-93.DOI:10.1227/NEU.0000000000000112.
[9] LUECKE G R.Haptic interactions using virtual manipulator coupling with applications to underactuated systems[J].IEEE Transactions on Robotics,2011,27(4):730-740.DOI:10.1109/TRO.2011.2141210.
[10] GIRONIMO G D,MATRONE G,TARALLO A,et al.A virtual reality approach for usability assessment:case study on a wheelchair-mounted robot manipulator[J].Engineering with Computers,2012,29(3):1-15.DOI:10.1007/s00366-012-0274-x.
