Model-based method for feed drive tuning applied to serial machine tool

Flohic, Julien Le; Paccot, Flavien; Chanal, Hélène

doi:10.1007/s00170-017-1212-2

Cited by 10 publications

(7 citation statements)

References 14 publications

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“…reducing the number of tuning cases of δ a from Eq. (21) or reducing the horizon length N k , increasing the receding step size to several samples, or up to half of the horizon length.…”

Section: Machine Simulator Based Oga Resultsmentioning

confidence: 99%

“…Jaen-Cuellar et al [20] proposed a PID tuning approach by coupling the gain phase margin method with the genetic algorithm, in improving the response in servo system. Le Flohic et al [21] developed a model based tuning approach for PID control gain of CNC, considering the dynamic behavior of the machine tool structure. However, to the best of the author's knowledge, almost all the existing gain tuning approaches for CNC application consider tracking rather than contouring performances.…”

Section: Introductionmentioning

confidence: 99%

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Contour error pre-compensation for five-axis high speed machining: offline gain adjustment approach

Duong

Rodríguez-Ayerbe

Lavernhe

et al. 2018

Int J Adv Manuf Technol

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This paper presents an Off-line Gain Adjustment (OGA) approach to reduce contour error in 5-axis high speed machining. The proposed contour error formulation is based on the estimation of tool contact points and the OGA is inspired from the idea of Model Predictive Control (MPC). The control gains used in the position loop of servo drives are optimally adjusted off-line to reduce the contour error for the considered trajectory. The obtained gain profiles are computed preserving axis kinematic limitations, stability criterion of servo drives and the motor current constraints. The OGA is developed thanks to a validated machine simulator. The simulation results prove that the OGA reduces significantly the contour error in 5-axis high speed machining.

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“…reducing the number of tuning cases of δ a from Eq. (21) or reducing the horizon length N k , increasing the receding step size to several samples, or up to half of the horizon length.…”

Section: Machine Simulator Based Oga Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Contour error pre-compensation for five-axis high speed machining: offline gain adjustment approach

Duong

Rodríguez-Ayerbe

Lavernhe

et al. 2018

Int J Adv Manuf Technol

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show abstract

“…Thus, the relationship between motion axes tracking errors e X , e Y , e Z , e A , e C ð Þ and tool tip deviation DX , DY , DZ ð Þcan be described as equation (10).…”

Section: Mechanism and Characteristics Of Dynamic Tracking Error Of Five-axis Machine Toolsmentioning

confidence: 99%

“…Lei et al 9 summarized the DBB testing error patterns of servo gain mismatch, backlash and tracking direction as a diagnosis of the error sources. Le Flohic et al 10 proposed a model-based servo tuning method based on DBB to reduce dynamic tracking error.…”

Section: Introductionmentioning

confidence: 99%

An attempt to relate dynamic tracking error to occurring situation based on additional rectilinear motion for five-axis machine tools

Ding

Zhang

et al. 2014

Advances in Mechanical Engineering

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During five-axis CNC machining, the dynamic tracking error of the five-axis machine tool caused by imperfect servo dynamic performance is the major factor affecting the accuracy during high-speed and high-precision manufacturing. Rotation tool center point (RTCP) test has become a typical kinematic test for the dynamic tracking error of five-axis machine tools. According to the mechanism and characteristics of dynamic tracking error, during the RTCP test, relating the measured dynamic tracking error to corresponding occurring situation is helpful for the research of calibration or reduction of dynamic tracking error. In this paper, a new method to relate dynamic tracking error to occurring situation based on additional rectilinear motion is attempted. During this method, rectilinear motions are added into the RTCP test process, and the dynamic tracking error and corresponding occurring position can be calculated from the scale of rectilinear motion. By six tests with rectilinear motions in and against X, Y and Z directions, the additional error and uncertainty of the test process can be offset by calculation. This method can be implemented without any addition or modification to the instrument or NC system.

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“…gibi pek çok mühendislik alanında sayısal analiz yöntemlerinin kullanıldığını görmekteyiz [47]- [50]. Sayısal analiz yöntemleri içerisinde bizzat denetimde kullanılmayan Newton-Raphson (NR) [51], LI [52], [53], En küçük kareler [54], vb. gibi yöntemler bulunmaktadır.…”

Section: Introductionunclassified

The use of interpolation techniques in induction motor control

Ötkün¹

2020

Pamukkale J Eng Sci

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İndüksiyon Motor'lar (IM) farklı yüklerde çalışırken nominal hızın gerisinde kaldıkları bilinmektedir. Bu bağlamda motor sürücüleri önem kazanmaktadır. Bu konu geçmişten günümüze pek çok bilim insanının dikkatini çekmiştir. Bu çalışmada, IM sürücüsü başarımını arttırmak amacıyla gerçekleştirilmiştir. IM sürücüsü de Skaler Denetim (SD) yöntemi kullanılmıştır. SD'de değişken frekanslı kontrol tekniği tercih edilmiştir. Böylece farklı yüklerde çalışan IM'nin nominal hızda çalışabilmesi için frekans değiştirilecektir. Frekans değişimini sağlamak için Gregory-Newton Interpolasyon (GNI) ve Lagrange Interpolasyon (LI) çözüm teknikleri kullanılmıştır. Bu iki farklı çözüm yöntemi, farklı yüklere karşılık nominal hız için gereken frekansı hesaplayarak sürücüye iletmektedir. Çalışma Matlab/Simulink programında test edilmiştir. Testlerden elde edilen sonuçlar iki interpolasyon tekniğinin de başarılı sonuçlar ürettiğini göstermiştir. Benzer sonuçlar üreten bu iki teknikte; GNI tekniğinin farklı yüklere cevap verme süresi yaklaşık 0.041-0.065 s arasında iken, LI tekniğinin cevap verme süresi 0.003 s'dir. Çalışma sonunda Oransal-Integral (PI) denetleyici ile performans incelemesi yapılmıştır. Sonuçlar göstermiştir ki, önerilen teknikler farklı hız ve yük değişimlerine hızlı cevap vermiş, daha hassas ve kararlı bir hız denetimi sağlamıştır.Induction Motors (IM) are known to remain behind the rated speed when operating at different loads. In this context, motor drivers gain importance. This subject has attracted the attention of many scientists from past to present. In this study, in order to increase the performance of IM driver was performed. Scalar Control (SC) method was used in IMD. The variable frequency control technique was preferred in SC. Thus, the frequency will be changed so that the IM operating in different loads can operate at nominal speed. Gregory-Newton Interpolation (GNI) and Lagrange Interpolation (LI) solution techniques were used to ensure frequency variation. These two different solution methods calculate the frequency required for the nominal speed in response to different loads to the driver. The study was tested in the Matlab/Simulink program. The results obtained from the tests showed that two interpolation techniques produced successful results. In these two techniques producing similar results; The response time of the GNI technique to the different loads is between 0.041-0.065 s, while the response time of the LI technique is 0.003 s. At the end of the study with Proportional-Integral (PI) controller the performance analysis was performed. The results showed that the proposed techniques gave quick response to different speed and load changes, resulting in more precise and stable speed control.Anahtar kelimeler: Hız kontrol, Indüksiyon motor sürücüsü, Interpolasyon, Lagrange, Gregory-Newton, IM.

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Model-based method for feed drive tuning applied to serial machine tool

Abstract: International audienc

Cited by 10 publications

References 14 publications

Contour error pre-compensation for five-axis high speed machining: offline gain adjustment approach

Contour error pre-compensation for five-axis high speed machining: offline gain adjustment approach

An attempt to relate dynamic tracking error to occurring situation based on additional rectilinear motion for five-axis machine tools

The use of interpolation techniques in induction motor control

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