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学者姓名：杨聪彬
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Abstract ：
Unpredictable sudden disturbances such as machine failure, processing time lag, and order changes increase the deviation between actual production and the planned schedule, seriously affecting production efficiency. This phenomenon is particularly severe in flexible manufacturing. In this paper, a dynamic scheduling method combining iterative optimization and deep reinforcement learning (DRL) is proposed to address the impact of uncertain disturbances. A real-time DRL production environment model is established for the flexible job scheduling problem. Based on the DRL model, an agent training strategy and an autonomous decision-making method are proposed. An event-driven and period-driven hybrid dynamic rescheduling trigger strategy (HDRS) with four judgment mechanisms has been developed. The decision-making method and rescheduling trigger strategy solve the problem of how and when to reschedule for the dynamic scheduling problem. The data experiment results show that the trained DRL decision-making model can provide timely feedback on the adjusted scheduling arrangements for different-scale order problems. The proposed dynamic-scheduling decision-making method and rescheduling trigger strategy can achieve high responsiveness, quick feedback, high quality, and high stability for flexible manufacturing process scheduling decision making under sudden disturbance.
Keyword ：
dynamic scheduling dynamic scheduling deep reinforcement learning deep reinforcement learning flexible job shop flexible job shop double deep Q-network double deep Q-network rescheduling rescheduling
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| GB/T 7714 | Yan, Jun , Zhao, Tianzuo , Zhang, Tao et al. A Dynamic Scheduling Method Combining Iterative Optimization and Deep Reinforcement Learning to Solve Sudden Disturbance Events in a Flexible Manufacturing Process [J]. | MATHEMATICS , 2025 , 13 (1) . |
| MLA | Yan, Jun et al. "A Dynamic Scheduling Method Combining Iterative Optimization and Deep Reinforcement Learning to Solve Sudden Disturbance Events in a Flexible Manufacturing Process" . | MATHEMATICS 13 . 1 (2025) . |
| APA | Yan, Jun , Zhao, Tianzuo , Zhang, Tao , Chu, Hongyan , Yang, Congbin , Zhang, Yueze . A Dynamic Scheduling Method Combining Iterative Optimization and Deep Reinforcement Learning to Solve Sudden Disturbance Events in a Flexible Manufacturing Process . | MATHEMATICS , 2025 , 13 (1) . |
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Abstract ：
The internal feedback hydrostatic bearing features a distinctive structural design, playing a pivotal role in high-precision machine tools. Its performance significantly influences the improvement of machining accuracy and stiffness. In this study, the working principle of the internal feedback closed hydrostatic bearing is described, the equivalent liquid resistance model of oil circuit considering internal flow effect is established, an analysis method for evaluating the support performance of the internal feedback hydrostatic bearing is proposed, flow rate correction methods are proposed, and the influence of load-carrying capacity and flow rate due to inlet pressure, oil film thickness, and the size of the restrictor is discussed. The accuracy of the method is verified by simulation, and insights for the future development of hydrostatic bearings are provided.
Keyword ：
performance parameters performance parameters Internal feedback Internal feedback finite element model finite element model
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| GB/T 7714 | Ma, Honglie , Zhang, Tao , Yang, Congbin et al. Research on the supporting mechanism of internal feedback hydrostatic hybrid bearing considering flow rate correction [J]. | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY , 2024 , 238 (12) : 1593-1609 . |
| MLA | Ma, Honglie et al. "Research on the supporting mechanism of internal feedback hydrostatic hybrid bearing considering flow rate correction" . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY 238 . 12 (2024) : 1593-1609 . |
| APA | Ma, Honglie , Zhang, Tao , Yang, Congbin , Liu, Zhifeng , Zhao, Yongsheng . Research on the supporting mechanism of internal feedback hydrostatic hybrid bearing considering flow rate correction . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY , 2024 , 238 (12) , 1593-1609 . |
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Abstract ：
This paper proposes a parameter optimization method for hydrostatic turntable with internal feedback in machine tools, considering stiffness and energy consumption. For the first time, a power consumption calculation method for oil pads with built-in restrictor is presented, and a stiffness calculation model for the oil film is established based on the Reynolds equation. A multi-objective optimization function is constructed in the form of weighted coefficients. An experimental setup for performance testing of the oil pad with internal feedback is developed, and finite element simulation analysis is combined to verify the accuracy of the theoretical method. Finally, corresponding optimization schemes for different scenarios are provided. The results show that at a speed of 50 r/min, power consumption can be reduced by 50.1% by adjusting the coefficients of the objective function. This method can serve as a reference for the energy-efficient design of hydrostatic turntables.
Keyword ：
Hydrostatic turntable Hydrostatic turntable Optimization Optimization Internal feedback Internal feedback Consumption Consumption
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| GB/T 7714 | Ma, Honglie , Zhang, Tao , Yang, Congbin et al. Multi Objective Optimization Research on Power Consumption and Stiffness of Internal Feedback Hydrostatic Turntable [J]. | INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY , 2024 . |
| MLA | Ma, Honglie et al. "Multi Objective Optimization Research on Power Consumption and Stiffness of Internal Feedback Hydrostatic Turntable" . | INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY (2024) . |
| APA | Ma, Honglie , Zhang, Tao , Yang, Congbin , Liu, Zhifeng , Cheng, Qiang , Chen, Chuanhai . Multi Objective Optimization Research on Power Consumption and Stiffness of Internal Feedback Hydrostatic Turntable . | INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY , 2024 . |
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Abstract ：
Discrete manufacturing workshops are confronted with problems of processing diverse products and strict realtime requirements for data service calculation and manufacturing equipment, which makes it difficult to provide realtime feedback and compensation. In this study, a high-availability, high-performance, and high-concurrency digital twin reference model was constructed to satisfy a large number of manufacturing requirements. A multiterminal real-time interaction model and information aging classification rules for virtual and physical models were established. Moreover, a multiterminal virtual interaction model was proposed, and a generalized distributed computing service digital twinning system was developed. This digital twin system was considered a machine tool box processing line as an actual case. Consequently, a full closed-loop manufacturing process digital twin platform for physical request service, real-time response, and quality information feedback from iterations, which provides case guidance for subsequent factory digital twin systems, was realized. The proposed system can satisfy the requirements of multidevice big data computing services in modern manufacturing plants, as well as multiplatform, low-latency, and high-fidelity information visualization requirements for managers. Thus, this system is expected to play an important role in information factories.
Keyword ：
container choreography system container choreography system digital twin digital twin multiterminal interaction multiterminal interaction distributed system distributed system
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| GB/T 7714 | Liu Zhi-feng , Zhang Yue-ze , Yang Cong-bin et al. Generalized distributed four-domain digital twin system for intelligent manufacturing [J]. | JOURNAL OF CENTRAL SOUTH UNIVERSITY , 2022 , 29 (1) : 209-225 . |
| MLA | Liu Zhi-feng et al. "Generalized distributed four-domain digital twin system for intelligent manufacturing" . | JOURNAL OF CENTRAL SOUTH UNIVERSITY 29 . 1 (2022) : 209-225 . |
| APA | Liu Zhi-feng , Zhang Yue-ze , Yang Cong-bin , Huang Zu-guang , Zhang Cai-xia , Xie Fu-gui . Generalized distributed four-domain digital twin system for intelligent manufacturing . | JOURNAL OF CENTRAL SOUTH UNIVERSITY , 2022 , 29 (1) , 209-225 . |
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Abstract ：
Adjustable lubrication aims to achieve active control of the relative motion of the friction interface, providing a new idea for intelligent operation. A new phenomenon of sudden changes of friction coefficient (COF) in the poly(vinylphosphoric acid) (PVPA) superlubricity system by mixing different lubricants, was found in this study. It was found that anions were the critical factor for the COF change. The change degrees of the COF were investigated by a universal micro tribometer (UMT). A quartz crystal microbalance (QCM)-D was used to analyze the adsorption quantity of anions on the PVPA surface. The hydratability of the PVPA interface was controlled by changing the anionic properties (the amount of charge and structure), thus regulating the COF. The adsorption difference of anions is an important reasoning of how anionic properties can regulate the hydratability. It was analyzed by molecular dynamics simulation. For anions carrying different numbers of charges or double bonds, the adsorption quantity of anions was mainly affected by the adsorption degree on the PVPA surface, while the adsorption quantity of anions with different molecular configuration was synergistically regulated by the adsorption degree and adsorption area of anions on the PVPA surface. This work can be used to develop smart surfaces for applications.
Keyword ：
adsorption adsorption water-based superlubricity regulation water-based superlubricity regulation poly(vinylphosphonic acid) poly(vinylphosphonic acid) molecular dynamics simulation molecular dynamics simulation charge charge structure structure
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| GB/T 7714 | Liu, Mengmeng , Wang, Lihui , Zhang, Caixia et al. Regulation Mechanism for Friction Coefficient of Poly(vinylphosphoric acid) (PVPA) Superlubricity System Based on Ionic Properties [J]. | NANOMATERIALS , 2022 , 12 (13) . |
| MLA | Liu, Mengmeng et al. "Regulation Mechanism for Friction Coefficient of Poly(vinylphosphoric acid) (PVPA) Superlubricity System Based on Ionic Properties" . | NANOMATERIALS 12 . 13 (2022) . |
| APA | Liu, Mengmeng , Wang, Lihui , Zhang, Caixia , Cheng, Yanhong , Yang, Congbin , Liu, Zhifeng . Regulation Mechanism for Friction Coefficient of Poly(vinylphosphoric acid) (PVPA) Superlubricity System Based on Ionic Properties . | NANOMATERIALS , 2022 , 12 (13) . |
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Abstract ：
The two main failure modes of harmonic reducers are wear and contact friction between the tooth profile of the circular spline (CS) and the flexible spline (FS). The sliding speed of the meshing point is a key factor affecting friction and wear processes of the CS and FS and should therefore be accurately determined. Herein, envelope theory is used to deduce the FS trajectory and the envelope track is divided into two segments according to whether or not the meshing point is outside the top circle of the CS. The velocity of the meshing point in the second meshing stage is essentially the vector sum of the FS velocity in three directions. When the CS is fixed, the relative sliding velocity is the instantaneous velocity of the FS along the tangential direction of the enveloped tooth profile. To verify the proposed model, the finite element method (FEM) and laser sensor experiments were performed and a relationship between the angle of rotation of the wave generator (WG) and the velocity of the FS was established. The results show that the sliding speed is sensitive to the radial displacement coefficient and has a linear relationship with the rotational speed of the WG.
Keyword ：
sliding speed sliding speed gear engagement gear engagement strain wave gearing strain wave gearing harmonic reducer harmonic reducer
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| GB/T 7714 | Zhang, Tao , Liu, Zhifeng , Yang, Congbin et al. Modeling of sliding speed of harmonic reducer based on double-circular-arc tooth profile [J]. | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE , 2022 , 236 (10) : 5736-5747 . |
| MLA | Zhang, Tao et al. "Modeling of sliding speed of harmonic reducer based on double-circular-arc tooth profile" . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE 236 . 10 (2022) : 5736-5747 . |
| APA | Zhang, Tao , Liu, Zhifeng , Yang, Congbin , Qin, Fei , Xie, Fugui , Zhang, Caixia . Modeling of sliding speed of harmonic reducer based on double-circular-arc tooth profile . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE , 2022 , 236 (10) , 5736-5747 . |
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Abstract ：
In the reliability optimization design field of CNC machine tools, reliability allocation plays a significant part, which has the characteristics of high complexity and strong uncertainty. Traditionally, reliability allocation methods have the disadvantages of a single allocation influence factor, too subjective or too objective, not flexible enough, etc. To solve the related problems, a novel reliability allocation method for machine tools is proposed, which combines subjective and objective weightings, and a variety of influencing factors are considered comprehensively. To deal with the characteristic of uncertainty and fuzziness in machine tool reliability analysis, different intuitionistic trapezoidal fuzzy numbers (ITrFNs) are allocated according to the importance of influencing factors. As the subjective method, the analytic hierarchy process (AHP) can reflect the decision maker's subjective preferences of machine tool influence factors, while the grey relational method (GRA) can analyze the relationship between data which is adopted as an objective weighting method. The reliability of each subsystem is obtained by combining the two methods. Finally, the validity of the proposed method is proved by an illustration analyzing and comparing it with the traditional AHP method and fuzzy allocation methods.
Keyword ：
Intuitionistic trapezoidal fuzzy numbers Intuitionistic trapezoidal fuzzy numbers Machine tool Machine tool Reliability allocation Reliability allocation Grey relational analysis Grey relational analysis Analytic hierarchy process Analytic hierarchy process
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| GB/T 7714 | Cheng, Qiang , Kang, Yongbo , Yang, Congbin et al. A new reliability allocation method for machine tools based on ITrFNs and AHP-GRA [J]. | INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY , 2022 , 124 (11-12) : 4019-4032 . |
| MLA | Cheng, Qiang et al. "A new reliability allocation method for machine tools based on ITrFNs and AHP-GRA" . | INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 124 . 11-12 (2022) : 4019-4032 . |
| APA | Cheng, Qiang , Kang, Yongbo , Yang, Congbin , Zhang, Caixia , Chen, Chuanhai . A new reliability allocation method for machine tools based on ITrFNs and AHP-GRA . | INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY , 2022 , 124 (11-12) , 4019-4032 . |
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Abstract ：
Transmission error is one of the most important performance indicators for evaluating harmonic drives, and can have crippling effects on positioning accuracy and stability of industrial robots. However, most of the existing error analysis methods focus on a single factor, and do not consider the uncertainty of dynamic parameters, leading to evident limitations. In the present study, static transmission error (caused by manufacturing and assembly error) and dynamic transmission error (generated by static transmission error and dynamic parameters) of a harmonic drive are modeled. An interval method is developed and used to numerically express uncertain dynamic parameters of the system. Chebyshev polynomials are used to approximate the dynamic differential equations of the harmonic drive, and then the distribution of dynamic transmission error and its relationship with uncertain parameters are discussed in detail. In addition, a global sensitivity analysis is carried out to intuitively demonstrate how much impact each parameter has on dynamic transmission error. Our results suggest that the moment of inertia J(in) and the torsional stiffness coefficient k(1) have a large influence on dynamic transmission error. Finally, the proposed method is validated by experiment. The method can be adopted to determine the upper and lower bounds of dynamic transmission error of dynamic systems under the influence of uncertain parameters and provides a theoretical basis for transmission error optimization and compensation.
Keyword ：
Interval arithmetic Interval arithmetic Chebyshev polynomial Chebyshev polynomial Dynamic transmission error Dynamic transmission error Global sensitivity Global sensitivity Harmonic drive Harmonic drive
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| GB/T 7714 | Hu, Qiushi , Liu, Zhifeng , Yang, Congbin et al. Research on dynamic transmission error of harmonic drive with uncertain parameters by an interval method [J]. | PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY , 2021 , 68 : 285-300 . |
| MLA | Hu, Qiushi et al. "Research on dynamic transmission error of harmonic drive with uncertain parameters by an interval method" . | PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY 68 (2021) : 285-300 . |
| APA | Hu, Qiushi , Liu, Zhifeng , Yang, Congbin , Xie, Fugui . Research on dynamic transmission error of harmonic drive with uncertain parameters by an interval method . | PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY , 2021 , 68 , 285-300 . |
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Abstract ：
Flexible job shop scheduling is one of the most effective methods for solving multiple varieties and small batch production problems in discrete manufacturing enterprises. However, limitations of actual transportation conditions in the flexible job shop scheduling problem (FJSP) are neglected, which limits its application in actual production. In this paper, the constraint influence imposed by finite transportation conditions in the FJSP is addressed. The coupling relationship between transportation and processing stages is analyzed, and a finite transportation conditions model is established. Then, a three-layer encoding with redundancy and decoding with correction is designed to improve the genetic algorithm and solve the FJSP model. Furthermore, an entityJavaScript Object Notation (JSON) method is proposed for transmission between scheduling services and Digital Twin (DT) virtual equipment to apply the scheduling results to the DT system. The results confirm that the proposed finite transportation conditions have a significant impact on scheduling under different scales of scheduling problems and transportation times.
Keyword ：
Flexible job shop scheduling Flexible job shop scheduling Genetic algorithm Genetic algorithm Finite transportation condition Finite transportation condition Digital Twin Digital Twin Transportation time Transportation time
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| GB/T 7714 | Yan, Jun , Liu, Zhifeng , Zhang, Caixia et al. Research on flexible job shop scheduling under finite transportation conditions for digital twin workshop [J]. | ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING , 2021 , 72 . |
| MLA | Yan, Jun et al. "Research on flexible job shop scheduling under finite transportation conditions for digital twin workshop" . | ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING 72 (2021) . |
| APA | Yan, Jun , Liu, Zhifeng , Zhang, Caixia , Zhang, Tao , Zhang, Yueze , Yang, Congbin . Research on flexible job shop scheduling under finite transportation conditions for digital twin workshop . | ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING , 2021 , 72 . |
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Abstract ：
Robots have become indispensable parts for the industrial automated workshop. The distance calculation between the industrial robot and obstacles is a fundamental problem for the robotic collision-free motion control. But existing methods for this problem have the disadvantage that the accuracy and execution efficiency cannot be guaranteed at the same time. In this paper, a pseudo-distance algorithm is presented based on the convex-plane-polygons-based representation to solve this problem. In this algorithm, convex plane polygons (CPPs) and cylinders are utilized to represent obstacles and the manipulator, respectively. The spatial relationship between each CPP and each cylinder is discussed through defining condition parameters, and is divided into six conditions including three special conditions when the contact happens, and the other three conditions when there exists a certain distance between the CPP and the cylinder. The distance is modelled under different relations based on the theory of mathematics and geometry. The pseudo distance is determined through selecting the smallest value from distances between CPPs and cylinders. The numerical experiment is performed based on the proposed and two previous algorithms to estimate the shortest distance between an industrial robot and a groove-shape obstacle. And an application example is performed to show the significance of this work on the robotic motion control. Results indicate that the proposed algorithm is more efficient than previous algorithms under a certain precision requirement, and can be effectively applied in the robotic motion control.
Keyword ：
Industrial robot Industrial robot Collision detection Collision detection Distance calculation Distance calculation Convex plane polygon Convex plane polygon
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| GB/T 7714 | Xu, Jingjing , Liu, Zhifeng , Yang, Congbin et al. A Pseudo-Distance Algorithm for Collision Detection of Manipulators Using Convex-Plane-Polygons-based Representation [J]. | ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING , 2020 , 66 . |
| MLA | Xu, Jingjing et al. "A Pseudo-Distance Algorithm for Collision Detection of Manipulators Using Convex-Plane-Polygons-based Representation" . | ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING 66 (2020) . |
| APA | Xu, Jingjing , Liu, Zhifeng , Yang, Congbin , Li, Longfei , Pei, Yanhu . A Pseudo-Distance Algorithm for Collision Detection of Manipulators Using Convex-Plane-Polygons-based Representation . | ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING , 2020 , 66 . |
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