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Journal articles on the topic 'Perpendicularity compensation'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Zhao, Guo Yong, Shi Jun Wang, and Wen Tao Sui. "Compensation Approach to Error of Perpendicularity and Mismatch Error of Position Loop Gains in CNC Machine." Applied Mechanics and Materials 121-126 (October 2011): 3190–94. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.3190.

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The contour precision has been an important CNC machine accuracy index along with the increase of high precision complex parts NC machining. The error of perpendicularity and the mismatch error of position loop gains among linked axes are regarded as the prime reasons to bring about CNC machine contour error. After analyzing the influence of the error of orthogonal axes perpendicularity to CNC machine contour precision, a compensation approach is set up that the following error is corrected in each sampling period, by introducing a perpendicularity deflection parameter. After analyzing the inf

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2

Zheng, Jia, Jincai Chen, Xinjian Wu, et al. "Analysis and Compensation of Installation Perpendicularity Error in Unmanned Surface Vehicle Electro-Optical Devices by Using Sea–Sky Line Images." Journal of Marine Science and Engineering 11, no. 4 (2023): 863. http://dx.doi.org/10.3390/jmse11040863.

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As an important sensor of an unmanned surface vehicle (USV), an electro-optical device is usually used to detect ships and obstacles in USV autonomous navigation and collision avoidance. However, the installation perpendicularity error of the electro-optical device greatly impacts the line-of-sight (LOS) stability control. This error is difficult to eliminate through mechanical calibration because the platform inertial navigation axis cannot be led out. This study aims to establish the model for the perpendicularity error of electro-optical devices during circumferential scanning and analyze i

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3

Zhang, Maowei, Yongmeng Liu, Ruirui Li, Dawei Wang, and Jiubin Tan. "Perpendicularity Detection of Multistage Rotor Considering Compensation of Datum Error." IEEE Transactions on Instrumentation and Measurement 71 (2022): 1–9. http://dx.doi.org/10.1109/tim.2022.3189733.

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4

Wang, Xiu Shan, Yan Li, and Yong Chang Yu. "Study of the Geometrical Error Modeling of NC Lathe Based on Multi-Body System Theory." Advanced Materials Research 139-141 (October 2010): 1093–96. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.1093.

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The geometrical error modeling of the numerically controlled (NC) lathe is the key technique to kinematics design, precision analysis and error compensation. The study gives out the modeling process of the generally geometrical error model based on the multi-body system theory for the multi-axis NC machine tools. By the multi-system theory, using the low series body arrays to describe the complex mechanical system, the article has finished the geometrical error modeling of the numerically controlled lathe, analyzed the influence on the model of error of perpendicularity between the linear axes

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5

Jia, Zhenyuan, Jinghao Yang, Wei Liu, et al. "Improved camera calibration method based on perpendicularity compensation for binocular stereo vision measurement system." Optics Express 23, no. 12 (2015): 15205. http://dx.doi.org/10.1364/oe.23.015205.

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6

Liu, H. L. "Effects of Rotation Angle on the Circular Test of Geometric Errors." Key Engineering Materials 295-296 (October 2005): 289–94. http://dx.doi.org/10.4028/www.scientific.net/kem.295-296.289.

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DBB was originally manufactured and proposed for checking the accuracy of NC machine tools. The device can also be used to study the relations between motion error of trace and the machine motion error for the purpose of error compensation. The nominal angle obtained through rotation feed rate and sampling time was adopted instead of actual angle which cannot be measured by the device. This project examined in details the effect of the angle deviation problem caused by non-perpendicularity between the movements in axis X and axis Y. The analysis and calculation verified that a squareness devia

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7

Leonov, O. A., N. Zh Shkaruba, L. A. Grinchenko, D. A. Pupkova, and D. U. Khasyanova. "Study of the Influence of Macrogeometry Parameters on the Tightness of Shaft–Seal Joints." Проблемы машиностроения и надежности машин, no. 6 (November 1, 2023): 40–47. http://dx.doi.org/10.31857/s0235711923060111.

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The factors influencing the reliability and durability of the joint between a shaft and a rubber reinforced seal are analyzed. It has been established that the theory of tightness of such joints has not yet been developed. The quality of a joint is usually assessed by the amount of leakage. It has been revealed that the amount of leakage depends on the materials from which the shaft and seal are manufactured, the roughness of the shaft surface, the presence of dust in the friction zone, the quality of the sealed liquid, and the operating temperature. In addition, the durability of the work is

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8

Li, Guo Ping, Yan Bin Gao, Ting Jun Wang, and Lian Wu Guan. "Error Auto-Compensation Methods of Improved Single-Axial Rotation INS." Advanced Materials Research 791-793 (September 2013): 1046–49. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.1046.

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An Auto-Compensation of inertial navigation system (INS) based on improved single-axis rotation has been proposed in the paper. Inertial Measurement Unit (IMU) is tilt mounted, e.g. neither perpendicularly, nor coaxially, with the rotation axis. Analysis and derivation show that this angle arrangement of IMU can restrain the expansion of the system errors caused by IMU. Simulations demonstrated the coincidence of the theoretical analysis and the system performances

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9

Ishikawa, K., K. Akagi, K. Mohri, Y. Kashiwagi, H. Fukasaku, and L. V. Panina. "Compensation for Temperature Variation in Magnetostricitive Torque Sensor Using Perpendicularly Magnetizing Coils." Journal of the Magnetics Society of Japan 16, no. 4 (1992): 649–54. http://dx.doi.org/10.3379/jmsjmag.16.649.

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10

Ishikawa, K., K. Akagi, K. Mohri, Y. Kashiwagi, H. Fukasaku, and L. V. Panina. "Compensation for Temperature Variation in Magnetostrictive Torque Sensor Using Perpendicularly Magnetizing Coils." IEEE Translation Journal on Magnetics in Japan 8, no. 4 (1993): 269–76. http://dx.doi.org/10.1109/tjmj.1993.4565618.

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11

Izdebski, Marek, Rafał Ledzion, and Włodzimierz Kucharczyk. "Precise Method for Measuring the Quadratic Electro-Optic Effect in Noncentrosymmetric Crystals in the Presence of Natural Birefringence." Materials 13, no. 18 (2020): 3942. http://dx.doi.org/10.3390/ma13183942.

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The application of the improved dynamic polarimetric method for the measurement of the quadratic electro-optic effect in NH4H2PO4 (ADP) crystal with the light beam propagating perpendicularly to its optical axis is presented. This technique can be applied in noncetrosymmetric crystals in the presence of natural birefringence even when the fast and slow rays diverge slightly, causing them to only partially interfere. The method allows for minor errors in cutting and orientation of the crystal samples, resulting in deviations from configurations in which the crystal symmetry vetoes the linear el

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12

Kraus, Matthias, Erik Förster, Verena Bagusat, et al. "Compact, astigmatism corrected cross-grating spectrometer." EPJ Web of Conferences 238 (2020): 03005. http://dx.doi.org/10.1051/epjconf/202023803005.

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Compact cross-grating spectrometers are inspired by classical high-end Echelle spectrometers and allow to acquire a large spectrum with a high spectral resolution in a single shot. To decrease the size of an Echelle spectrometer substantially, a cross grating was employed combining both required dispersive functionalities. First, an Echelle grating diffracts light in several higher diffraction orders, while a superposed, perpendicularly oriented cross-disperser is used in first diffraction order. In this contribution, we report on the realization of a cross-grating spectrometer employing a fol

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13

Guan, Banggui, Yanfu Qin, and Minglei Guo. "Angle error control model of laser profilometer contact measurement." Open Physics 20, no. 1 (2022): 680–92. http://dx.doi.org/10.1515/phys-2022-0062.

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Abstract In controlling the angle error of laser profilometer contact measurement, the control model used in the past is subject to more external interference, which affects the measurement of other parameters, resulting in poor error control effect. Therefore, the angle error control model of laser profilometer contact measurement is designed by determining the initial zero position of the profilometer measuring sensor, compensating the non-linear error, designing the interference signal processing circuit, and avoiding the error measurement influenced by external factors. From the main error

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14

Jiao, Xiankai, Zongzhi Zhang, and Yaowen Liu. "Modeling of Temperature Dependence of Magnetization in TbFe Films — An Atomistic Spin Simulation Study." SPIN 06, no. 01 (2016): 1650003. http://dx.doi.org/10.1142/s201032471650003x.

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In this paper, we performed spin simulations at atomistic level to study the temperature dependent properties of perpendicularly magnetized TbFe thin films. The crystallographically amorphous feature of TbFe ferrimagnetic alloys is modeled by using a lattice system with disordered site occupation of rare earth (RE) and transition metal (TM) spins. The simulated Curie temperature ([Formula: see text]) is consistent well with the mean-field approximation theory. With the increase of Tb concentration, the [Formula: see text] decreases almost linearly, whereas the magnetization compensation temper

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15

Rudyk, Andrii V., Andriy O. Semenov, Natalia Kryvinska, Olena O. Semenova, Volodymyr P. Kvasnikov, and Andrii P. Safonyk. "Strapdown Inertial Navigation Systems for Positioning Mobile Robots—MEMS Gyroscopes Random Errors Analysis Using Allan Variance Method." Sensors 20, no. 17 (2020): 4841. http://dx.doi.org/10.3390/s20174841.

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A problem of estimating the movement and orientation of a mobile robot is examined in this paper. The strapdown inertial navigation systems are often engaged to solve this common obstacle. The most important and critically sensitive component of such positioning approximation system is a gyroscope. Thus, we analyze here the random error components of the gyroscope, such as bias instability and random rate walk, as well as those that cause the presence of white and exponentially correlated (Markov) noise and perform an optimization of these parameters. The MEMS gyroscopes of InvenSense MPU-6050

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16

Ríos-Zertuche, Rodolfo. "Examples of Pathological Dynamics of the Subgradient Method for Lipschitz Path-Differentiable Functions." Mathematics of Operations Research, May 5, 2022. http://dx.doi.org/10.1287/moor.2021.1241.

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We show that the vanishing step size subgradient method—widely adopted for machine learning applications—can display rather messy behavior even in the presence of favorable assumptions. We establish that convergence of bounded subgradient sequences may fail even with a Whitney stratifiable objective function satisfying the Kurdyka-Łojasiewicz inequality. Moreover, when the objective function is path-differentiable, we show that various properties all may fail to occur: criticality of the limit points, convergence of the sequence, convergence in values, codimension one of the accumulation set,

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17

Kuchiishi, Andre Kazuo, Cassie Castorena, Youngsoo Richard Kim, and Benjamin Shane Underwood. "Ruggedness Evaluation of Dynamic Modulus Test Using Small-Scale Test Specimens for Asphalt Mixture Performance Tester." Transportation Research Record: Journal of the Transportation Research Board, April 27, 2023, 036119812311657. http://dx.doi.org/10.1177/03611981231165780.

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The small specimen dynamic modulus test (AASHTO TP 132-19) is of paramount importance for the asphalt community since it can be used to characterize and compare asphalt mixtures and the test outcomes can be used as input for pavement performance predictions. Even though the small specimen dynamic modulus test is broadly used, acceptable limits for controlling critical experimental factors still need to be developed. This paper presents the method and outcomes of a ruggedness evaluation of the Asphalt Mixture Performance Tester (AMPT) dynamic modulus test using small-scale test specimens. Three

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18

Wang, Pengju, Jintao Ke, G. S. Li, et al. "Tuning magnetization compensation temperature of Gd3Fe5O12 epitaxially grown on Gd3Sc2Ga3O12." Applied Physics Letters 124, no. 17 (2024). http://dx.doi.org/10.1063/5.0198728.

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The compensated ferrimagnetic insulator Gd3Fe5O12 (GdIG) with a magnetization compensation point (TM ∼ 286 K) near room temperature has recently gained significant attention because of its long spin transmission length and absence of Ohmic loss. However, previously reported GdIG films with perpendicular magnetic anisotropy have a TM far below room temperature, which is unfavorable for practical applications. Here, we show the tuning of TM from 268 to 303.7 K in perpendicularly magnetized 15 nm GdIG films epitaxially grown on (111) Gd3Sc2Ga3O12 by manipulating the epitaxial strain through contr

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19

Svitlyk, V., M. D. Kuz’min, Y. Mozharivskyj, and O. Isnard. "Investigation of the intrinsic magnetic properties of GdCo4B single crystal: determination of the magnetocrystalline anisotropy from the first-order magnetization processes." European Physical Journal Plus 138, no. 5 (2023). http://dx.doi.org/10.1140/epjp/s13360-023-03996-1.

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AbstractWe report on the intrinsic magnetic properties of a GdCo4B single crystal as derived from magnetization measurements. The occurrence of a first-order magnetization process (FOMP) in a magnetic field applied perpendicularly to the easy magnetization direction provides an opportunity to determine the anisotropy parameters K1 and K2. To this end, the theoretical approach proposed previously for easy-plane magnets has been adapted for the case of easy-axis compounds exhibiting a FOMP. The obtained anisotropy parameters of GdCo4B are compared with the values deduced by other classical techn

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20

Dallio, Matthias, Stefan Bernet, and Alexander Jesacher. "Diffractive remote focusing module for high-NA scanning microscopy operating at Galvo speeds." Journal of Physics: Photonics, June 5, 2025. https://doi.org/10.1088/2515-7647/ade1bd.

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Abstract We demonstrate a remote axial scanning system for optical scanning microscopy that operates in the millisecond range over a large depth of approximately 80 times the longitudinal size of the focal spot, and that retains the focal spot size by compensating for spherical aberrations. This is achieved by controlling the divergence of the scanning beam with a special pair of adjacent diffractive optical elements (DOEs) that form a so-called moiré lens whose focal length is controlled by a relative rotation between the two DOEs. The moiré lens system is used in reflection mode, where one o

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21

Ando, Ryo, and Takashi Komine. "Composition dependence of anomalous Nernst effect in amorphous TbFeCo thin films with perpendicular magnetic anisotropy." Journal of Applied Physics 135, no. 9 (2024). http://dx.doi.org/10.1063/5.0189969.

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In this study, we systematically investigated the anomalous Nernst effect in perpendicularly magnetized amorphous TbFeCo thin films with various compositions. It was found that the magnitude of the off diagonal thermopower (ODT), which corresponds to the anomalous Nernst effect, can be uniformly explained with respect to the Tb content regardless of the concentration above or below the compensation composition. The maximum ODT of 1.3 μV/K and the thermoelectric conductivity of 1.59 A/mK at room temperature were obtained, which is more significant than other perpendicular magnetic anisotropy th

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22

Williams, Michael, Kenneth Tignor, Luke Sigler, Chitra Rajagopal, and Vladimir Gurau. "Robotic Arm for Automated Assembly of Proton Exchange Membrane Fuel Cell Stacks." Journal of Fuel Cell Science and Technology 11, no. 5 (2014). http://dx.doi.org/10.1115/1.4027392.

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We present an innovative, inexpensive end-effector, the robot workcell, and the fuel cell components used to demonstrate the automated assembly process of a proton exchange membrane fuel cell stack. The end-effector is capable of handling a variety of fuel cell components including membrane electrode assemblies, bipolar plates and gaskets using vacuum cups mounted on level compensators and connected to a miniature vacuum pump. The end-effector and the fuel cell components are designed with features that allow an accurate component alignment during the assembly process within a tolerance of 0.0

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23

Settles, Gary S., and Matthew R. Fulghum. "The Focusing Laser Differential Interferometer, an Instrument for Localized Turbulence Measurements in Refractive Flows." Journal of Fluids Engineering 138, no. 10 (2016). http://dx.doi.org/10.1115/1.4033960.

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The theory, design, and use of a focusing laser differential interferometer (FLDI) instrument are described. The FLDI is a relatively simple, nonimaging, common-path polarization interferometer for measuring refractive signals generated by turbulence, as well as small-amplitude acoustics and boundary-layer instabilities. It has in principle a unique ability to look through wind-tunnel windows, ignore sidewall boundary-layers and vibration, and concentrate only on the refractive signal near a pair of sharp beam foci in the core flow. The instrument's low cost and ease of implementation make it

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24

Lenoir, Gilles, Kirtana Puthran, Christian Barth, Jerome Fleiter, and Amalia Ballarino. "Effect of transverse compressive stress applied at room temperature on Nb₃Sn Rutherford cables." Superconductor Science and Technology, December 7, 2023. http://dx.doi.org/10.1088/1361-6668/ad1341.

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Abstract The accelerator magnets for the High Luminosity upgrade of the Large Hadron Collider (HL-LHC) use Nb3Sn conductor to achieve the required in-field performance. To sustain the Lorentz forces during operation, a pre-compression is applied to the coils during the fabrication of the magnet. This can lead to an irreversible degradation of the Nb3Sn conductor due to its mechanical sensitivity.&#xD;In this study, the impact of the pre-compression applied to the conductor at room temperature is investigated using a reacted double-stack specimen made of two Nb3Sn Rutherford cables. The cab

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