Kinematic Calibration and Forecast Error Compensation of a 2-DOF Planar Parallel Manipulator

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	Kinematic Calibration and Forecast Error Compensation of a 2-DOF Planar Parallel Manipulator
	Chang Peng; Li Chengrong; Li Tiemin
刊名	CHINESE JOURNAL OF MECHANICAL ENGINEERING
	2011-11-01
卷号	24 期号:6;6 页码:992-998
关键词	Parallel Manipulator Kinematic Calibration Error Compensation Minimal Linear Combinations (Mlcs)
文献子类	Article
英文摘要	Due to large workspace, heavy-duty and over-constrained mechanism, a small deformation is caused and the precision of the 2-DOF planar parallel manipulator is affected. The kinematic calibration cannot compensate the end-effector errors caused by the small deformation. This paper presents a method combined step kinematic calibration and linear forecast real-time error compensation in order to enhance the precision of a two degree-of-freedom (DOF) planar parallel manipulator of a hybrid machine tool. In the step kinematic calibration phase of the method, the end-effector errors caused by the errors of major constant geometrical parameters is compensated. The step kinematic calibration is based on the minimal linear combinations (MLCs) of the error parameters. All simple and feasible measurements in practice are given, and identification analysis of the set of the MLCs for each measurement is carried out. According to identification analysis results, both measurement costs and observability are considered, and a step calibration including step measurement, step identification and step error compensation is determined. The linear forecast real-time error compensation is used to compensate the end-effector errors caused by other parameters after the step kinematic calibration. Taking the advantages of the step kinematic calibration and the linear forecast real-time error compensation, a method for improving the precision of the 2-DOF planar parallel manipulator is developed. Experiment results show that the proposed method is robust and effective, so that the position errors are kept to the same order of the measurement noise. The presented method is attractive for the 2-DOF planar parallel manipulator and can be also applied to other parallel manipulators with fewer than six DOFs.
WOS关键词	MACHINE-TOOL
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000297711700009
内容类型	期刊论文
源URL	[http://ir.ia.ac.cn/handle/173211/40923]
专题	自动化研究所_智能制造技术与系统研究中心
推荐引用方式 GB/T 7714	Chang Peng,Li Chengrong,Li Tiemin. Kinematic Calibration and Forecast Error Compensation of a 2-DOF Planar Parallel Manipulator[J]. CHINESE JOURNAL OF MECHANICAL ENGINEERING,2011,24(6;6):992-998.
APA	Chang Peng,Li Chengrong,&Li Tiemin.(2011).Kinematic Calibration and Forecast Error Compensation of a 2-DOF Planar Parallel Manipulator.CHINESE JOURNAL OF MECHANICAL ENGINEERING,24(6;6),992-998.
MLA	Chang Peng,et al."Kinematic Calibration and Forecast Error Compensation of a 2-DOF Planar Parallel Manipulator".CHINESE JOURNAL OF MECHANICAL ENGINEERING 24.6;6(2011):992-998.