Relevant bibliographies by topics / Cross-coupled compensator / Journal articles
To see the other types of publications on this topic, follow the link: Cross-coupled compensator.

Journal articles on the topic 'Cross-coupled compensator'

Author: Grafiati
Published: 6 September 2023
Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Cross-coupled compensator.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Liu, Ya Qiu, Qu Wu, Wei Peng Jing, and Liang Kuan Zhu. "Cross-Coupled Synchronized Control for Bi-Cylinder Servo System." Applied Mechanics and Materials 44-47 (December 2010): 1646–50. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.1646.

Full text
Abstract:
The paper focuses on cylinders synchronized control in continuum press for particleboard hot-pressing. An equal-status cross-coupled synchronized controller based on disturbance and synchronizing compensators has been designed and employed to an electro-hydraulic servo system driven by bi-cylinder. The simulations demonstrate that the controller eliminates synchronizing error faster and control two motion-units to move synchronously in a cross-coupled system than the controller with no compensator. And the robust of system has been enhanced.
APA, Harvard, Vancouver, ISO, and other styles
2

El-Khatib, Z., L. MacEachern, and S. A. Mahmoud. "Highly-linear CMOS cross-coupled compensator transconductor with enhanced tunability." Electronics Letters 46, no. 24 (2010): 1597. http://dx.doi.org/10.1049/el.2010.2332.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Schindlbeck, Christopher, Christian Pape, and Eduard Reithmeier. "Multi-DOF compensation of piezoelectric actuators with recursive databases." at - Automatisierungstechnik 66, no. 8 (2018): 656–64. http://dx.doi.org/10.1515/auto-2017-0136.

Full text
Abstract:
Abstract Piezoelectric actuators are subject to nonlinear effects when voltage-driven in open-loop control. In particular, hysteresis and creep effects are dominating nonlinearities that significantly deteriorate performance in tracking control scenarios. In this paper, we present an online compensator suitable for piezoelectric actuators that is based on the modified Prandtl-Ishlinskii model and utilizes recursive databases for the compensation of nonlinearities. The compensator scheme is furthermore extended to systems with more than one degree of freedom (DOF) such as Cartesian manipulators
APA, Harvard, Vancouver, ISO, and other styles
4

Su, Ke-Han, and Ming-Yang Cheng. "Contouring accuracy improvement using cross-coupled control and position error compensator." International Journal of Machine Tools and Manufacture 48, no. 12-13 (2008): 1444–53. http://dx.doi.org/10.1016/j.ijmachtools.2008.04.008.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Su, Ke Han, Ming Yang Cheng, and Yu Chen Chang. "Contouring Performance Improvement of Biaxial Motion Control Systems Using Friction and Disturbance Compensation." Advanced Materials Research 579 (October 2012): 287–96. http://dx.doi.org/10.4028/www.scientific.net/amr.579.287.

Full text
Abstract:
One of the key issues regarding multi-axis contour following tasks in modern high-precision machining applications is how to effectively reduce contour error. Generally, among existing approaches, the Cross-Coupled Control (CCC) structure is widely used in multi-axis contour following tasks to improve contouring accuracy. However, when a servomechanism is operated in reverse or low-speed motions, the inherent friction force and external disturbance effects will degrade the CCC performance. Therefore, to cope with the aforementioned problems, this paper exploits the Karnopp friction model-based
APA, Harvard, Vancouver, ISO, and other styles
6

Choi, Yeon-Beom, Sang-Hoon Lee, and Doo-Hee Jung. "Controller Design Based on a Synchronous Error Compensator for Wheeled Cross-coupled Systems." International Journal of Control, Automation and Systems 22, no. 5 (2024): 1728–38. http://dx.doi.org/10.1007/s12555-023-0687-x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Benderskiy, B. Ya, and A. A. Chernova. "The influence of the charge shape on heat exchange of a recessed nozzle." Journal of Physics: Conference Series 2057, no. 1 (2021): 012013. http://dx.doi.org/10.1088/1742-6596/2057/1/012013.

Full text
Abstract:
Abstract The paper deals with the numerical simulation of the flow of thermally conductive viscous gaseous combustion products in the flow paths of a power plant. The influence of the shape of the mass supply surface on the gas dynamics and heat exchange near the recessed nozzle of the power plant is investigated. The coupled problem of heat exchange is solved by the method of control volumes. It is shown that the compensator geometry determines the localization of both the topological features of the flow near the recessed nozzle and the position of local maximums of the heat transfer coeffic
APA, Harvard, Vancouver, ISO, and other styles
8

Zhang, Xiuyun, Zhiqiang Wang, and Tao Liu. "Anti-Disturbance Integrated Position Synchronous Control of a Dual Permanent Magnet Synchronous Motor System." Energies 15, no. 18 (2022): 6697. http://dx.doi.org/10.3390/en15186697.

Full text
Abstract:
In order to solve the problem that the position synchronous performance of dual permanent magnet synchronous motor servo system is easily affected by parameter perturbation and load disturbance, an anti-disturbance integrated position synchronous control strategy of dual permanent magnet synchronous motor system is proposed. Firstly, the integral mathematical model of a dual permanent magnet synchronous motor system is established. After that, the third-order linear extended state observer is constructed to observe and compensate for disturbance in order to improve the anti-disturbance perform
APA, Harvard, Vancouver, ISO, and other styles
9

Ahmad, Irfan, Amro Emad Awad Ali та Yasser Bin Salamah. "MIMO Hμ Feedback Controller With Feedforward Compensator for Scanning Tunneling Microscope Having 3D Cross-Coupled Piezoelectric Actuator". IEEE Access 9 (2021): 153750–66. http://dx.doi.org/10.1109/access.2021.3127575.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Wu, Hongming, Xiong Li, Kan Xu, Dong Song, Yingkai Xia, and Guohua Xu. "Motion Control of a Flexible-Towed Underwater Vehicle Based on Dual-Winch Differential Tension Coordination Control." Journal of Marine Science and Engineering 13, no. 6 (2025): 1120. https://doi.org/10.3390/jmse13061120.

Full text
Abstract:
This paper focused on the motion control of an underwater vehicle installed on a linear guide system, which is driven by two electric winches with wire ropes. The vehicle is subject to complex nonlinear time-varying disturbances and actuator input saturation effects during motion. A coupled dynamic model, incorporating an underwater vehicle, winches, and wire ropes, was established. Particular attention was paid to the nonlinear time-varying hydrodynamic disturbances acting on the underwater vehicle. The Kelvin–Voigt model was introduced to characterize the nonlinear dynamic behavior of the wi
APA, Harvard, Vancouver, ISO, and other styles
11

Kulkarni, P. K., and K. Srinivasan. "Optimal Contouring Control of Multi-Axial Feed Drive Servomechanisms." Journal of Engineering for Industry 111, no. 2 (1989): 140–48. http://dx.doi.org/10.1115/1.3188743.

Full text
Abstract:
The capability of multi-axial machine tool feed drives to follow specified trajectories accurately is an important requirement for precision machining and especially so in applications involving high contouring speeds. In current generation machine tools, contouring is achieved by coordinating the commands to the individual feed drives, and implementing closed position loop control for each axis. The present paper deals with the evaluation of a cross-coupled compensator aimed specifically at improving contouring accuracy in multi-axial feed drives. The controller design is formulated as an opt
APA, Harvard, Vancouver, ISO, and other styles
12

Smith, R. D., W. F. Weldon, and A. E. Traver. "Aerodynamic Loading and Magnetic Bearing Controller Robustness Using a Gain-Scheduled Kalman Filter." Journal of Engineering for Gas Turbines and Power 118, no. 4 (1996): 836–42. http://dx.doi.org/10.1115/1.2817003.

Full text
Abstract:
Modeling or predicting aerodynamic loading effects on rotating equipment has been a source of concern to those who wish to examine stability or response of critical components. The rotordynamic model of the system employed for such examination assumes greater importance for active bearings than for passive ones, if only because of the additional potential for instability introduced by the controller. For many systems, aerodynamic loading may vary widely over the range of operation of the bearings, and may depend on extended system variables. Thus, potential controllers for active magnetic bear
APA, Harvard, Vancouver, ISO, and other styles
13

Zhang, Wanjun, Shimin Mao, Feng Zhang, Jingxuan Zhang, Jingyi Zhang, and Jingyan Zhang. "Cross Coupled Contour Error Compensation Technology." IOP Conference Series: Materials Science and Engineering 394 (August 7, 2018): 032031. http://dx.doi.org/10.1088/1757-899x/394/3/032031.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Wang, Dong Yun, Cheng Guan, and Li Ping Shao. "A Combined Nonlinear PID Control and Cross-Coupled Pre-Compensation Control in Hydraulic Excavator." Key Engineering Materials 480-481 (June 2011): 1542–47. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.1542.

Full text
Abstract:
In position control system of hydraulic excavator, the uncoordinated speeds between joints make quite trajectory errors no matter how well each joint performs. In order to solve this problem, a cross-coupled pre-compensation method is introduced in and applied to hydraulic excavator servo control system to solve this problem. Furthermore, in order to compensate for the nonlinearities of excavator and friction resistance, a nonlinear controller with angle velocity error observer and acceleration feedback is designed. Experimental results show that the proposed control strategy is effective in i
APA, Harvard, Vancouver, ISO, and other styles
15

Liu, Minghao, Yongmin Zhu, Hongliang Xu, Weirui Liu, Hui Yang, and Xingjun Gao. "Pre-Compensation Strategy for Tracking Error and Contour Error by Using Friction and Cross-Coupled Control." Machines 12, no. 9 (2024): 593. http://dx.doi.org/10.3390/machines12090593.

Full text
Abstract:
This paper focuses on improving the tracking accuracy for servo systems and increasing the contouring performance of precision machining. The dynamic friction during precision machining is analyzed using the LuGre model. The dynamic and static parameters in the friction model are efficiently and accurately identified using the improved Drosophila swarm algorithm based on cross-mutation. The friction tracking error can be deduced from the friction state space and an expression is derived. To compensate for the tracking error caused by friction, a feedforward compensation control is designed to
APA, Harvard, Vancouver, ISO, and other styles
16

Li, Guozhu. "An Active Disturbance Rejection Sliding Mode Contour Tracking Control for Biaxial Moving Platform." Mobile Information Systems 2022 (May 27, 2022): 1–8. http://dx.doi.org/10.1155/2022/9261251.

Full text
Abstract:
A sliding mode control for active disturbance rejection was utilized for uniaxial tracking control, and a cross-coupled contour error compensation controller based on nonlinear position domain (PD) was devised for enhanced contour machining precision and robustness of biaxial moving platform. For single-axis tracking control, the total disturbance of the system was initially considered to be the external disturbance plus internal unmodeled dynamics, and the overall disturbance was estimated and compensated in real time using a linear extended state observer. A sliding mode controller was built
APA, Harvard, Vancouver, ISO, and other styles
17

Ursac, Iulian, Florin Constantinescu, and Mihai Marin. "A Frequency Reference for Carrier Synthesis in Wireless Standard 802.11g." Scientific Bulletin of Electrical Engineering Faculty 20, no. 1 (2020): 56–61. http://dx.doi.org/10.2478/sbeef-2020-0112.

Full text
Abstract:
AbstractA new approach to a frequency synthesizer is proposed: instead of a fixed frequency reference oscillator and a variable ratio frequency divider we use a variable frequency reference oscillator and a fixed ratio frequency divider. The implementation and characterization of a low phase-noise compensated oscillator used as frequency reference for a wireless transceiver is described. This circuit employs a high Q piezoelectric resonator together with a CMOS cross coupled pair amplifier. A calibration circuit for compensation of frequency errors with respect to process variation is proposed
APA, Harvard, Vancouver, ISO, and other styles
18

Li, Xuewei, Jun Zhang, Wanhua Zhao, and Bingheng Lu. "A zero phase error tracking based path precompensation method for high-speed machining." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 2 (2015): 230–39. http://dx.doi.org/10.1177/0954406215582013.

Full text
Abstract:
Contour error due to the dynamic characteristics of feed system has a great influence on machining accuracy, in high-speed machining. In this paper, a new path precompensation method is proposed using zero phase error tracking control algorithm to improve the contouring accuracy for multiaxis machining with large feed rates. In this method, the outputs are predicted with the identified position-loop models of feed systems, and a contour error calculator is designed to calculate contour error in each sample instance using the predicted output and reference input. In order to compensate the cont
APA, Harvard, Vancouver, ISO, and other styles
19

Du, Fuxin, Xianying Feng, Peigang Li, Jiawei Wang, Zhaoguo Wang, and Chen Yu. "Cross-coupled intelligent control for a novel two-axis differential micro-feed system." Advances in Mechanical Engineering 10, no. 6 (2018): 168781401877462. http://dx.doi.org/10.1177/1687814018774628.

Full text
Abstract:
Nonlinear friction in a conventional drive feed system feeding at low speed is a main factor that contributes to feed drive complexity. A novel two-axis differential micro-feed system is developed in this study to overcome the accuracy limitation of conventional drive feed system. Instead of the screw-rotating-type ball screw adopted in conventional drive feed system, the transmission component of the proposed two-axis differential micro-feed system is a nut-rotating-type ball screw. In this setup, not only the screw but also the nut is driven by a servo motor. By superposing the two high-spee
APA, Harvard, Vancouver, ISO, and other styles
20

Tatebe, Hiroaki, Masao Kurogi, and Hiroyasu Hasumi. "Atmospheric Responses and Feedback to the Meridional Ocean Heat Transport in the North Pacific." Journal of Climate 30, no. 15 (2017): 5715–28. http://dx.doi.org/10.1175/jcli-d-16-0055.1.

Full text
Abstract:
Atmospheric responses and feedback to meridional ocean heat transport (OHT) have been investigated using a global climate model that is interactively connected with a high-resolution regional ocean model embedded in the western North Pacific. Compared with a global climate model without the regional model, the net heat supply into the Kuroshio–Oyashio Extension (KOE) region is increased as a result of the increase of the mean northward ocean heat transport (OHT) by the western boundary currents and mesoscale eddies. Resultant sea surface temperature (SST) rise sharpens the meridional SST gradi
APA, Harvard, Vancouver, ISO, and other styles
21

Jiang, Lei, Yuejuan Li, and Marvin H. Cheng. "Compensation for Cross-Coupled Dynamics of Dual Twisted-String Actuation Systems." Journal of Control Science and Engineering 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/5864918.

Full text
Abstract:
Twisted-string actuation devices have been adopted in various robotic systems due to their advantages of compact size and simple structure. To precisely control the displacement of such devices, a dual-direction actuating mechanism, which provides both extension and contraction of two strings simultaneously, must be implemented. Due to the physical properties of twisted string, the actuator has problems of nonlinear length variation and cross-coupled relationships between two strings. In this study, two controllers (PID-FC and LQR-FC) were synthesized with the consideration of cross-coupling d
APA, Harvard, Vancouver, ISO, and other styles
22

Cheung, Carol C., Heiko Hecht, Thomas Jarchow, and Laurence R. Young. "Threshold-based vestibular adaptation to cross-coupled canal stimulation." Journal of Vestibular Research 17, no. 4 (2008): 171–81. http://dx.doi.org/10.3233/ves-2007-17403.

Full text
Abstract:
Prior experiments have demonstrated that people are able to adapt to cross-coupled accelerations associated with head movements while spinning at high rotation rates (e.g., 23 rpm or 138°/s). However, while adapting, subjects commonly experience serious side effects, such as motion sickness, non-compensatory eye movements, and strong and potentially disorienting illusory body tilt or tumbling sensations. In the present study, we investigated the feasibility of adaptation using a threshold-based method, which ensured that the illusory tilt sensations remained imperceptible or just barely notice
APA, Harvard, Vancouver, ISO, and other styles
23

Yeh, Syh-Shiuh, and Pau-Lo Hsu. "Theory and Applications of the Robust Cross-Coupled Control Design." Journal of Dynamic Systems, Measurement, and Control 121, no. 3 (1999): 524–30. http://dx.doi.org/10.1115/1.2802506.

Full text
Abstract:
The cross-coupled control (CCC) has been recognized as an efficient motion controller that reduces contouring errors, but theoretical analysis of it is lacking, and there is no systematic design approach for obtaining a CCC system with guaranteed control performance. Consequently, the compensators C in CCC are commonly implemented in a PID structure and their contouring accuracy is usually degraded in real applications under different operating conditions. In an attempt to overcome the CCC design limitations described above, this paper introduces a robust CCC design based on a novel formulatio
APA, Harvard, Vancouver, ISO, and other styles
24

Zhao, Qiang, Yiheng Wu, Xiaojin Zhao, Yuan Cao, and Chip-Hong Chang. "A 1036-F2/Bit High Reliability Temperature Compensated Cross-Coupled Comparator-Based PUF." IEEE Transactions on Very Large Scale Integration (VLSI) Systems 28, no. 6 (2020): 1449–60. http://dx.doi.org/10.1109/tvlsi.2020.2980306.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Peng, F. Y., K. S. Sun, Y. Zhou, and Bin Li. "Adaptive Compensation of Spatial Contour Error Based on Neural Networks in Three-Axis Machining." Key Engineering Materials 392-394 (October 2008): 7–12. http://dx.doi.org/10.4028/www.scientific.net/kem.392-394.7.

Full text
Abstract:
The spatial contour error which exists in multi-axis machine tools is believed relative with the track-lag error existing in the single axis, the set value of feed-rate and the curvature of the contour. A spatial error model is taken for presenting a vector method to calculate the contour error in three-axis machine tool and an adaptive cross coupled controller which is based on neural network is presented. The simulation results of cross coupled control in three-axis, indicate that the contour precision can be improved effectively which exists in the machine tool, and the errors influenced by
APA, Harvard, Vancouver, ISO, and other styles
26

Wang, Sanxiu, and Shengtao Jiang. "Contour control of biaxial motion system based on RBF neural network and disturbance observer." Advances in Mechanical Engineering 13, no. 8 (2021): 168781402110348. http://dx.doi.org/10.1177/16878140211034842.

Full text
Abstract:
Friction is the main factor which degrades the control precisions of the servo system. In this paper, a cross coupled control method based on RBF neural network and disturbance observer is proposed for multi-axis servo system with LuGre friction, in order to implement high precision tracking and contouring control. Firstly, a feedback linearization controller is designed to realize the position stable tracking for single-axis motion; then, the disturbance observer is used to observe and compensate the friction. However, in practical application, the observation gain is difficult to select, and
APA, Harvard, Vancouver, ISO, and other styles
27

Wang, Dongyun, Lijuan Zheng, Hongxiang Yu, Wu Zhou, and Liping Shao. "Robotic excavator motion control using a nonlinear proportional-integral controller and cross-coupled pre-compensation." Automation in Construction 64 (April 2016): 1–6. http://dx.doi.org/10.1016/j.autcon.2015.12.024.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Wang, Bo, Ying Chun Liang, and Shen Dong. "Study on the Compound Fuzzy Motion Control for the Ultra Precision Machine Tools." Key Engineering Materials 315-316 (July 2006): 813–16. http://dx.doi.org/10.4028/www.scientific.net/kem.315-316.813.

Full text
Abstract:
This paper presents a sophisticated trajectory tracking algorithm based on the utilization of the compound control and fuzzy contour control for the ultra precision machine tools. The main idea is to use the compound control to broaden the bandwidth of the servo system and, therefore, improve the tracking accuracy of the single axis. Then, FUZZY cross coupled contour control is introduced to compensate for the contour error caused by imperfect dynamics of the tracking axis and the mismatch of the control parameters of the servo systems. Experiments carried out on the HCM-1 ultra precision mach
APA, Harvard, Vancouver, ISO, and other styles
29

Wang, Li Mei, Qi Yang, Yi Biao Sun, and Chun Fang Liu. "Iterative Learning Cross-Coupled Control for XY Table Based on Real-Time Contour Error Estimation." Advanced Materials Research 383-390 (November 2011): 7054–59. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.7054.

Full text
Abstract:
The contour accuracy of XY table directly driven by two linear motors was influenced by the complicated reel-time contour error model of free-form curves, uncertainty external disturbance and dynamic matching between X axis and Y axis. To establish XY table model that easily calculated and suitable for free-form curves, real-time contour error estimate method was adopted. In order to reduce uncertainty external disturbance and dynamic matching between X axis and Y axis, the iterative learning cross-coupled controller (ILCCC) was designed for current compensation on X axis and Y axis. Simulatio
APA, Harvard, Vancouver, ISO, and other styles
30

Ulbrich, Heinz, Adrian Cyllik, and Guido Ahaus. "Stabilization of Centrifuges with Instabilities Due to Fluid-Structure Interactions: Various Control Approaches." International Journal of Rotating Machinery 7, no. 5 (2001): 323–33. http://dx.doi.org/10.1155/s1023621x01000276.

Full text
Abstract:
Partially filled centrifuges exhibit unstable behavior over particular rotational speed ranges. To remove this unstable behavior, three different control approaches are presented which are experimentally implemented using a magnetic bearing. First, by means of a PD-controller the system stiffness is changed leading to a shift of the instability region. Second, the instability region is removed by a cross coupled feed back of the rotor vibration velocities. This cross coupling directly counteracts the fluid excitation mechanism. Third, a disturbance observer is presented which allows to estimat
APA, Harvard, Vancouver, ISO, and other styles
31

Liu, Weirui, Fei Ren, Yunwen Sun, and Shanglei Jiang. "Contour error pre-compensation for three-axis machine tools by using cross-coupled dynamic friction control." International Journal of Advanced Manufacturing Technology 98, no. 1-4 (2018): 551–63. http://dx.doi.org/10.1007/s00170-018-2189-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
32

Yao, Jing, Xiaoming Cao, Yang Zhang, and Yao Li. "Cross-coupled fuzzy PID control combined with full decoupling compensation method for double cylinder servo control system." Journal of Mechanical Science and Technology 32, no. 5 (2018): 2261–71. http://dx.doi.org/10.1007/s12206-018-0437-9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
33

Fan, Yi Yan, and Xiao Yong Mei. "QoS Evaluation Model for Web Services Composition." Key Engineering Materials 500 (January 2012): 311–16. http://dx.doi.org/10.4028/www.scientific.net/kem.500.311.

Full text
Abstract:
With the gradual development and standardization of services-oriented computing (SOC), it becomes a rapidly growing software developing pattern to composition Web services into applications. Since Web services composition are long-lasting, loosely coupled and cross application and administrative boundaries, it is essential to choose proper services to compose the composite Web services to meet user’s requirements. This paper presents a QoS evaluation method for aggregation services when failure occurs and defines QoS evaluation model of the common aggregation patterns of transaction compensati
APA, Harvard, Vancouver, ISO, and other styles
34

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.

Full text
Abstract:
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
APA, Harvard, Vancouver, ISO, and other styles
35

Hudson, Tyler B., Tan-Hung Hou, Brian W. Grimsley, and Fuh-Gwo Yuan. "Imaging of local porosity/voids using a fully non-contact air-coupled transducer and laser Doppler vibrometer system." Structural Health Monitoring 16, no. 2 (2016): 164–73. http://dx.doi.org/10.1177/1475921716668843.

Full text
Abstract:
This study exploits the feasibility of imaging zones of local porosity/voids simulated by introducing microspheres during layup of a unidirectional carbon fiber–reinforced polymer composite panel. A fully non-contact hybrid system primarily composed of an air-coupled transducer and a laser Doppler vibrometer was used for imaging the local porosity/void zones from the guided wave response. To improve image resolution, several preprocessing techniques are performed. The wavefield reconstructed from the laser Doppler vibrometer measurements was first “denoised” using a one-dimensional wavelet tra
APA, Harvard, Vancouver, ISO, and other styles
36

Fayolle, Patrice, and Dara W. Childs. "Rotordynamic Evaluation of a Roughened-Land Hybrid Bearing." Journal of Tribology 121, no. 1 (1999): 133–38. http://dx.doi.org/10.1115/1.2833794.

Full text
Abstract:
Hybrid bearings represent an attractive alternative to ball bearings for use in highspeed cryogenic turbopumps. However, the internally-developed cross-coupled forces can generate instabilities responsible for a speed limitation of the machine. To reduce these forces and raise the onset speed of instability, the use of deliberately-roughened stators, already successfully tested for liquid “damper” seals, is investigated. Rotor-dynamic results are presented for a five-pocket orifice-compensated hole-pattern-land hybrid bearing tested with water at high speed and high pressure. Experimental data
APA, Harvard, Vancouver, ISO, and other styles
37

Schmidt, Christian, Martin Buchholz, and Madhukar Chandra. "Optimization of loosely coupled inductive data transfer systems by non-Foster impedance matching." Advances in Radio Science 17 (September 19, 2019): 151–60. http://dx.doi.org/10.5194/ars-17-151-2019.

Full text
Abstract:
Abstract. Wireless energy transfer is often used in industrial applications to power actors or sensors, for example in rotating applications as replacement for mechanical slip rings. In addition to the energy transfer, we have developed inductively coupled data transfer systems to expand the range of possible applications. The data transfer is accomplished by using loosely coupled coils on both sides of the power transfer system. In pure energy transfer systems, resonant coupling is used, meaning that the power transfer coils are both tuned to a common frequency to compensate the relatively sm
APA, Harvard, Vancouver, ISO, and other styles
38

Zheng, Liming, Hongyi Wang, Jianfei Wu, Peiguo Liu, and Runze Li. "Modeling and Analyzing of CMOS Cross-Coupled Differential-Drive Rectifier for Ultra-Low-Power Ambient RF Energy Harvesting." Energies 17, no. 21 (2024): 5356. http://dx.doi.org/10.3390/en17215356.

Full text
Abstract:
This paper models and analyzes the Complementary Metal Oxide Semiconductor (CMOS) cross-coupled differential-drive (CCDD) rectifier for Ultra-Low-Power ambient radio-frequency energy harvesters (RFEHs) working in the subthreshold region. In this paper, two closed-form equations of CCDD rectifier output voltage and input resistance in the subthreshold region were derived based on BSIM4 models of NMOS and PMOS. The model give insight to specify circuit parameters according to different inputs, transistor sizes, threshold voltages, numbers of stages, load conditions and compensation voltages, whi
APA, Harvard, Vancouver, ISO, and other styles
39

Henry, Romain, Yann Périn, Kiril Velkov, and Sergei Pavlovich Nikonov. "3-D COUPLED SIMULATION OF A VVER 1000 WITH PARCS/ATHLET." EPJ Web of Conferences 247 (2021): 06015. http://dx.doi.org/10.1051/epjconf/202124706015.

Full text
Abstract:
A new OECD/NEA benchmark entitled “Reactivity compensation with diluted boron by stepwise insertion of control rod cluster” is starting. This benchmark, based on high quality measurements performed at the NPP Rostov Unit 2, aims to validate and assess high fidelity multi-physics simulation code capabilities. The Benchmark is divided in two phases: assembly wise and pin-by-pin resolution of steady-state and transient multi-physics problems. Multi-physics simulation requires the generation of parametrized few-group cross-sections. This task used to be done with deterministic (2-D) lattice codes,
APA, Harvard, Vancouver, ISO, and other styles
40

Liu, Weirui, Yuwen Sun, Xilin Yuan, and Mansen Chen. "A new approach to the pre-compensation of contour errorsfor three-axis machine tools using an adaptive cross-coupled controller." International Journal of Advanced Manufacturing Technology 90, no. 9-12 (2016): 3711–25. http://dx.doi.org/10.1007/s00170-016-9574-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

Cheng, Yuan Ming, Chien Hsun Kuo, and Jih Hua Chin. "Real-Time Interpolator and Contour Tracking in Link-Space for a 3 DOF Parallel Mechanism." Materials Science Forum 594 (August 2008): 415–36. http://dx.doi.org/10.4028/www.scientific.net/msf.594.415.

Full text
Abstract:
Parallel mechanisms could be hardly used in contour tracking because of their mechanism features. This study proposed a link-space real time contour tracking for a 3 DOF (Z、α and β) hydraulic parallel mechanism. The essence of this approach is to convert control points of command trajectory to link space by inverse kinematics. A real-time interpolator was created and the multi-axis cross-coupled pre-compensation control (MCCPM) was constructed for link-space contour tracking. It was shown that a contour-accurate trajectory tracking could be performed which was impossible in the original Z-α-β
APA, Harvard, Vancouver, ISO, and other styles
42

Chen, Syuan-Yi, Zi-Jie Chien, Wei-Yen Wang, and Hsin-Han Chiang. "Contour Tracking Control of a Linear Motors-Driven X-Y-Y Stage Using Auto-Tuning Cross-Coupled 2DOF PID Control Approach." Applied Sciences 10, no. 24 (2020): 9036. http://dx.doi.org/10.3390/app10249036.

Full text
Abstract:
Linear motors (LMs) are widely used in numerous industry automation where precise and fast motions are required to convert electric energy into linear actuation without the need of any switching mechanism. This study aims to develop a control strategy of auto-tuning cross-coupled two-degree-of-freedom proportional-integral-derivative (ACC2PID) to achieve extremely high-precision contour control of a LMs-driven X-Y-Y stage. Three 2PID controllers are developed to control the mover positions in individual axes while two compensators are designed to eliminate the contour errors in biaxial motions
APA, Harvard, Vancouver, ISO, and other styles
43

Su, Jian Bin, Xue Zhong Wu, Ding Bang Xiao, et al. "Modeling of Vibratory Microgyroscope with Manufacture Errors Based on Parameters Identification Theory." Key Engineering Materials 562-565 (July 2013): 452–57. http://dx.doi.org/10.4028/www.scientific.net/kem.562-565.452.

Full text
Abstract:
This paper presents a modeling method of vibratory microgyroscope with manufacture errors based on parameters identification theroy. owing to the manufacture errors, such as quadrature error and cross-axis perturbation, the resonant vibrations of the drive mode to the sense mode are coupled not only through the Coriolis force. In reality, also by elastic forces, damping and so on. Accurate modeling and identification of manufacture errors enhance significantly the ability to compensate for the consequent errors via feedback/feedforward control strategies. In this article, a really direct model
APA, Harvard, Vancouver, ISO, and other styles
44

Zhu, H. A., C. L. Teo, and G. S. Hong. "An Uncertainty-Attenuating Controller for Mechanical Manipulators with Electromechanical Dynamics." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 207, no. 3 (1993): 165–71. http://dx.doi.org/10.1243/pime_proc_1993_207_335_02.

Full text
Abstract:
It is known that the cross-coupled non-linear electromechanical dynamics of motor-manipulator systems is more complex than when only the mechanical dynamics is considered. In this paper, control of manipulators with non-negligible motor dynamics is studied and a control strategy is developed for achieving ease of controller design and high control performance. By using the developed algorithm not only can the highly complicated electromechanical dynamics be effectively controlled, but also the motors are made ‘sensible’ to sense and compensate for the uncertain dynamics acting at the manipulat
APA, Harvard, Vancouver, ISO, and other styles
45

Garrick-Bethell, Ian, Thomas Jarchow, Heiko Hecht, and Laurence R. Young. "Vestibular adaptation to centrifugation does not transfer across planes of head rotation." Journal of Vestibular Research 18, no. 1 (2008): 25–37. http://dx.doi.org/10.3233/ves-2008-18103.

Full text
Abstract:
Out-of-plane head movements performed during fast rotation produce non-compensatory nystagmus, sensations of illusory motion, and often motion sickness. Adaptation to this cross-coupled Coriolis stimulus has previously been demonstrated for head turns made in the yaw (transverse) plane of motion, during supine head-on-axis rotation. An open question, however, is if adaptation to head movements in one plane of motion transfers to head movements performed in a new, unpracticed plane of motion. Evidence of transfer would imply the brain builds up a generalized model of the vestibular sensory-moto
APA, Harvard, Vancouver, ISO, and other styles
46

Zhou, Xubin, Weidong Chen, Qing Xiao, et al. "A Modified Asymmetric Bouc–Wen Model-Based Decoupling Control of an XY Piezoactuated Compliant Platform with Coupled Hysteresis Characteristics." Shock and Vibration 2020 (December 15, 2020): 1–15. http://dx.doi.org/10.1155/2020/6637282.

Full text
Abstract:
Due to the inherent hysteresis characteristics of the smart material, the positioning accuracy of the piezo-driven manipulator was always decreased. Especially in multi-degrees-of-freedom (MDOFs) compliant manipulators driven by multismart actuators, the cross-coupled hysteresis among MDOFs decreased the positioning accuracy of such compliant platforms significantly. In this paper, the hysteresis feature identification and coupled hysteresis compensation of a piezo-driven XY manipulator was investigated. To establish the hysteresis characteristics of the piezo-driven manipulator, a modified Bo
APA, Harvard, Vancouver, ISO, and other styles
47

Rezaei, Farzan, and Seyed Javad Azhari. "Analysis and Design Procedure of a Novel Low Power Highly Linear Operational Transconductance Amplifier." Journal of Circuits, Systems and Computers 24, no. 05 (2015): 1550071. http://dx.doi.org/10.1142/s0218126615500711.

Full text
Abstract:
In this paper, a new highly linear operational transconductance amplifier (OTA) is presented. Proposed OTA employs two linearization techniques of cross-coupled double differential pairs and resistive source degeneration to achieve highly linear response under low power consumption. Considering the linearity and the frequency response issues as main parameters of OTA in the communication circuits, design procedure is theoretically formulated for the best linearity and optimum frequency compensation. Proposed OTA is simulated in 0.18-μm TSMC CMOS technology by Hspice simulator. While, the power
APA, Harvard, Vancouver, ISO, and other styles
48

Liu, Shixiang, Tianyu Lu, Teng Shang, and Qunli Xia. "Dynamic Modeling and Coupling Characteristic Analysis of Two-Axis Rate Gyro Seeker." International Journal of Aerospace Engineering 2018 (October 22, 2018): 1–14. http://dx.doi.org/10.1155/2018/8513684.

Full text
Abstract:
A dynamic model of a two-axis rate gyro-stabilized platform-based seeker with cross-coupling, mass imbalance, and disturbance torque is developed on the basis of the working principle of seeker two-loop steady tracking theory; coordinate transformations are used to analyze the effects of seeker servo control mode on missile guidance and control systems. Frequency domain is used to identify the servo motor transfer function. Furthermore, a block diagram of the two-gimbal-coupled system is developed, and the coupling characteristics of gimbal angle are analyzed with different missile body inputs
APA, Harvard, Vancouver, ISO, and other styles
49

Bułka, Bogdan R., and Jakub Łuczak. "Current Correlations in a Quantum Dot Ring: A Role of Quantum Interference." Entropy 21, no. 5 (2019): 527. http://dx.doi.org/10.3390/e21050527.

Full text
Abstract:
We present studies of the electron transport and circular currents induced by the bias voltage and the magnetic flux threading a ring of three quantum dots coupled with two electrodes. Quantum interference of electron waves passing through the states with opposite chirality plays a relevant role in transport, where one can observe Fano resonance with destructive interference. The quantum interference effect is quantitatively described by local bond currents and their correlation functions. Fluctuations of the transport current are characterized by the Lesovik formula for the shot noise, which
APA, Harvard, Vancouver, ISO, and other styles
50

Heydarzadeh, Mohammad S., Seyed M. Rezaei, Noor A. Mardi, and Ali Kamali E. "Motion control of a two-axis linear motor-driven stage in the micro-milling process." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 232, no. 1 (2016): 65–76. http://dx.doi.org/10.1177/0954408916683976.

Full text
Abstract:
The application of linear motor-driven stages as the feed drivers of CNC micro milling machine tools is growing. In addition to employ high speed and high precision equipment such as linear motor-driven stages, the precision of the machined contours is highly dependent on the capabilities of the servo controllers. In this paper, the design of a precise controller for a two-axis LMDS has been investigated for micro-milling applications. In such feed drives, disturbances such as friction, force ripples, and machining forces have adverse effects on the workpiece positioning precision due to the d
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography