Current Hysteresis Control Design of Motorized Spindle Driven System Based on Semi-Physical Simulation Model

Liu, Zhiwei; Wu, Yuhou; Fan, Liyun; Si, Zhipeng; Jia, Zhengwei

doi:10.1109/ccdc49329.2020.9164078

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…The idea of digital twin is to connect virtual models with real devices, it uses data as a tool to connect. So data transmission is the key technology [2]. The importance of data transmission is that it allows real-time monitoring and analysis of the behavior, performance, and interaction of a physical object with its environment.…”

Section: Digital Twin Servermentioning

confidence: 99%

“…One of the key benefits of digital twin technology is its ability to improve the efficiency and performance of physical objects and systems by identifying and predicting potential problems before they occur [2]. For example, in manufacturing, digital twin technology can be used to optimize production lines and predict equipment failures, which can lead to significant cost savings and reduced downtime.…”

Section: Introductionmentioning

confidence: 99%

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Device fault diagnosis method based on digital twin server

Liu,

Xin,

Hou

et al. 2023

J. Phys.: Conf. Ser.

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The digital twin is a virtual replica of a physical system that can be used to simulate and analyze its behavior. In fault diagnosis, digital twin technology is used to create a virtual model of an industrial system, and simulate different scenarios to identify the causes of the fault, and predict the system behavior under different conditions. We propose an equipment fault diagnosis method based on digital twin server. Digital twin server is the intermediary between digital model and real device data interaction. Firstly, the principle and function of digital twin and digital twin server are introduced. Then the method of using digital twin server in equipment fault diagnosis is described. Finally, taking the fault diagnosis of underwater propeller as an example, the validity of the fault diagnosis method based on digital twin server is tested. The digital twin fault diagnosis system of underwater propeller connects the digital model and the real sensing equipment, realizes the fusion of virtual and reality, and the accuracy of the resolution of the short-circuit fault between turns of the stator winding of underwater propeller can reach 85%.

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Section: Digital Twin Servermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Device fault diagnosis method based on digital twin server

Liu,

Xin,

Hou

et al. 2023

J. Phys.: Conf. Ser.

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“…This section discusses the research status of incorporating digital twins into the smart design of UPM equipment, as well as its components, such as bearing slideways, spindle-drive, stage module, servo module, and clamping module, as shown in Table 1. Bearing slideways Obtain a trade-off among feed velocity, achievable precision and resulting friction force Predict the performance of the designed bearing slideways in the operating process [9] Spindle-drive Achieve a balance among the anti-vibration capability, torque/speed range, and cost Timely and cost-economically verify its performance instead of destructive tests [10] Stage module Capable of sub-micron/nanometer positioning resolution and/or accuracy Optimize the adaptive control algorithm [11] Servo module Suffer from a lag phenomenon in dynamic tracking of the tool path Eliminate nonlinear factors including the friction effect of moving mechanism with nonlinear characteristics [12] Clamping module Achieve a balance among locating tolerance, minimum clamping force, and fixturing accuracy and stability Support real-time, geometry data-driven dynamic decision of the clamping forces and positioning [13]…”

Section: Digital Twins For Smart Design Of Upmmentioning

confidence: 99%

“…The design of the spindle-drive module is supposed to achieve a balance among the anti-vibration capability, torque/speed range, and cost. Liu et al [10] proposed a semi-physical simulation-based current hysteresis control design model for motorized spindle-driven systems, in which the designed control system can be conveniently deployed to the digital signal processing chip to time-efficiently and cost-economically verify its performance instead of destructive tests. By engineering a digital twin model of the spindledrive module, the cost/waste forecasting and fault diagnosis of physical entities could be realized.…”

Section: Digital Twins-based Spindle-drive Module Designmentioning

confidence: 99%

Digital Twins-Based Smart Design and Control of Ultra-Precision Machining: A Review

Leng

2021

Symmetry

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Ultra-Precision Machining (UPM) is a kind of highly accurate processing technology developed to satisfy the manufacturing requirements of high-end cutting-edge products including nuclear energy producers, very large-scale integrated circuits, lasers, and aircraft. The information asymmetry phenomenon widely exists in the design and control of ultra-precision machining. It may lead to inconsistency between the designed performance and operational performance of the UPM equipment on stiffness, thermal stability, and motion accuracy, which result from its design, manufacturing, and control, and determine the form accuracy and surface roughness of machined parts. The performance of the UPM equipment should be improved continuously. It is still challenging to realize the real-time and self-adaptive control, in which building a high-fidelity and computationally efficient digital twin is a valuable solution. Nevertheless, the incorporation of the digital twin technology into the UPM design and control remains vague and sometimes contradictory. Based on a literature search in the Google Scholar database, the critical issues in the UPM design and control, and how to use the digital twin technologies to promote it, are reviewed. Firstly, the digital twins-based UPM design, including bearings module design, spindle-drive module design, stage system module design, servo module design, and clamping module design, are reviewed. Secondly, the digital twins-based UPM control studies, including voxel modeling, process planning, process monitoring, vibration control, and quality prediction, are reviewed. The key enabling technologies and research directions of digital twins-based design and control are discussed to deal with the information asymmetry phenomenon in UPM.

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