Error dependent variable feedrate interpolation strategy

Kuang, Lin; Huang, Cong-Hui; Tsao, Yi-Ming; Wang, Jui-Chun; Chiu, Tsung-Min

doi:10.1109/3ca.2010.5533454

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Many researchers [9,19] showed that the curvature has a great relationship with the machining path error as well as feed rate. Therefore, using a lower feed rate in the machining segment with a larger curvature can effectively reduce the machining path error; however, most scholars used the current curvature as the design method for dynamic feed scheduling.…”

Section: Machining Path Feature Extractionmentioning

confidence: 99%

Using Fuzzy Control for Feed Rate Scheduling of Computer Numerical Control Machine Tools

2021

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In industrial processing, workpiece quality and processing time have recently become important issues. To improve the machining accuracy and reduce the cutting time, the cutting feed rate will have a significant impact. Therefore, how to plan a dynamic cutting feed rate is very important. In this study, a fuzzy control system for feed rate scheduling based on the curvature and curvature variation is proposed. The proposed system is implemented in actual cutting, and to verify the data an optical three-dimensional scanner is used to measure the cutting trajectory of the workpiece. Experimental results prove that the proposed fuzzy control system for dynamic cutting feed rate scheduling increases the cutting accuracy by 41.8% under the same cutting time; moreover, it decreases the cutting time by 50.8% under approximately the same cutting accuracy.

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Section: Machining Path Feature Extractionmentioning

confidence: 99%

Using Fuzzy Control for Feed Rate Scheduling of Computer Numerical Control Machine Tools

2021

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“…Moreover, empirical observation was also found that the contouring error performance can be significantly affected by the value of feedrate [2]. Accordingly, there was the error dependent feedrate conrol strategy [3] also proposed to acquire higher precision performance. In summary, this paper intends to conduct a joint research and provide a more sophisticated dynamic feedrate control scheme to pursuit better contouring performance.…”

Section: Introductionmentioning

confidence: 95%

Dynamic feedrate control based on the feedback of path curvature and real-time contour error

Kuang

Yang

2013

2013 IEEE 10th International Conference on Power Electronics and Drive Systems (PEDS)

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This paper studies the dynamic feedrate control problem for mechanical stages performing contouring actions. In modern researches, feedrate is considered as a dynamic factor instead of simple constant value in the traditional methods, and should be properly controlled to meet higher precision standard nowadays. To incorporate the dynamic feedrate in the path interpolation, the so called non-uniform rational B-spline (NURBS) algorithm is utilized to form the fundamental structure of this research. The result of a sophisticated dynamic feedrate control design is then proposed where the system feedrate is real-time determined based on both the feedback of the path curvature and the measured contour error. Experiments and comparative studies for free-form paths are also conducted where the results show that the proposed design indeed can provide significant precision improvement in overall contouring performance in contrast to the traditional method. Therefore, the effectiveness and the goal of the proposed method can be verified which suggests that the entire scheme has the potential for real industrial applications.I.

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Feasibility Study on the Use of 2-Dimensional Penalized Spline Trajectory for Smooth Curve Generation in Precision Machining

Mandal

Kumar

Chatterjee

et al. 2014

J Control Autom Electr Syst

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Trajectory corners generated while generation of a curve from curved fragments using micro-positioning X −Y stages poses serious limitations on their use for smooth motion trajectory applications. In this research, a controller along with its control algorithm is presented which uses a penalized curve fitting-based approach to steer low cost/ low resolution stepper motor driven stage motion so that the cornerization in the trajectory is minimized without any serious degradation to accuracy. The control algorithm is initially implemented in MATLAB to check its fidelity. Subsequently, a complete set up involving ARM-based controller, motor drivers and precision positioning stages is built in order to facilitate the working of the algorithm in real time. The set up is tested for CNC machining application, where material removal takes place in a precise manner according to the trajectory of X −Y positioning stages. A good match was found between simulation and experimental results in trajectory generation. It was further observed that the use of penalized spline trajectory reduces the cornerization in trajectory generation.

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Error dependent variable feedrate interpolation strategy

Cited by 3 publications

References 5 publications

Using Fuzzy Control for Feed Rate Scheduling of Computer Numerical Control Machine Tools

Using Fuzzy Control for Feed Rate Scheduling of Computer Numerical Control Machine Tools

Dynamic feedrate control based on the feedback of path curvature and real-time contour error

Feasibility Study on the Use of 2-Dimensional Penalized Spline Trajectory for Smooth Curve Generation in Precision Machining

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