Article
Mathematics
Hexu Yang, Xiaopeng Li, Jinchi Xu, Dongyang Shang, Xingchao Qu
Summary: The study establishes an integrated joint motor servo system based on a double inertia system model and designs a control strategy to suppress system vibration. The effects of friction torque, pole damping coefficient, and control strategy on system response and vibration suppression effectiveness are analyzed.
Article
Engineering, Multidisciplinary
Jinchi Xu, Xiaopeng Li, Zemin Yang, Jing Su, Renzhen Chen, Dongyang Shang
Summary: This paper investigates the measurement and compensation of friction interference in reducers based on a gear system. An adaptive control strategy is proposed to suppress friction phenomena in the dual-inertia system. The influence of different motor position signals, control methods, and tooth surface friction coefficient on system response is also studied. The results demonstrate that the proposed method effectively suppresses friction phenomena.
Article
Automation & Control Systems
Dongyang Shang, Xiaopeng Li, Meng Yin, Fanjie Li
Summary: This paper aims to reduce fluctuations of output speed in a flexible manipulator in order to improve motion accuracy. By adopting a variable parameters PI control strategy and disturbance observer, the fluctuations of output speed can be effectively reduced.
ASIAN JOURNAL OF CONTROL
(2023)
Article
Automation & Control Systems
Ayse Duman Mammadov, Emre Dincel, Mehmet Turan Soylemez
Summary: This study proposes a new method for designing a discrete proportional integral-proportional retarded (D-PI-PR) controller using dominant pole assignment and the modified Nyquist plot approach. The method determines the controller parameters based on the desired dominant poles and closed-loop system performance criteria, while eliminating the impact of controller zeros on system transient response.
Article
Engineering, Mechanical
Dario Richiedei, Iacopo Tamellin, Alberto Trevisani
Summary: This paper introduces an active vibration control technique based on the receptance method for solving the multi-input antiresonance assignment and simultaneous pole-zero assignment. The controllers are designed using the measured receptances, eliminating the need for a system model. Two methods for computing the gains and two techniques for handling the non-uniqueness of the solution are proposed. The proposed methods are validated through numerical examples.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Construction & Building Technology
P. H. Jiao, X. Cai, L. L. Wang, J. J. Chen, Y. L. Zhao, Y. F. Cao
Summary: The integrated energy system is a practical solution to address energy supply pressure and promote energy efficiency globally. However, previous research has neglected to explore the flexibility potential of multi-energy coordination, resulting in a lack of flexibility in operational decisions. To address this issue, a techno-economic framework is urgently needed to improve the flexible performance of the integrated energy system operation. A proposed operational strategy aims to fully exploit the inertia characteristics of natural gas and heat energy transmission to enhance flexibility in energy use and balancing system energy. Additionally, a tiered carbon trading mechanism is simulated to effectively investigate and achieve low carbon emissions.
SUSTAINABLE CITIES AND SOCIETY
(2023)
Article
Computer Science, Information Systems
Ryszard Dindorf, Piotr Wos
Summary: This study focuses on the dynamic modeling and control of a hydraulic servo drive connected to a boom manipulator via a vibration isolator, using a Hammerstein model with unknown parameters and an autoregressive model to optimize the hybrid control structure. Improved control accuracy and damping vibration compensation are achieved through a combination of feedback and feedforward controllers, resulting in better system performance.
Article
Engineering, Mechanical
Bo Hu, Yan Huo, Junlin Gao, Da Zhang
Summary: This paper presents a CGA-based approach to solve the inverse displacement problem of S-PMs composed of two PMs. By applying geometric operations provided by CGA, the vertex coordinates of the middle platform can be obtained, and the polynomial equation can be easily solved.
MECHANISM AND MACHINE THEORY
(2022)
Article
Mathematics
Xiangchen Liu, Minghai Wang, Yihan Wang
Summary: A high performance manipulator servo drive system is a double flexible system with flexible joints and flexible loads, which has highly nonlinear time-varying characteristics that can cause resonance and affect the dynamic characteristics of the system. In order to suppress the system resonance, a nonlinear dynamics model is established and a servo control method for the double flexible body system is designed. The simulation results show that the improved fuzzy PI control strategy can effectively suppress the vibration of the double-flexible system by establishing the precise dynamic model and designing appropriate PI controller parameters.
Article
Chemistry, Multidisciplinary
Yaowen Zhang, Yechao Liu, Zongwu Xie, Yang Liu, Baoshi Cao, Hong Liu
Summary: This study investigates the visual servo control of the space station macro/micro manipulator system. It proposes a position-based eye-in-hand visual servo approach that utilizes hardware sensors to overcome the flexibility and joint backlash of the macro manipulator's base. The study also introduces vibration suppression and compensation techniques, as well as a lag correction method for precise positioning of large payloads.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Mechanical
Dailin Zhang, Huangchao Chen, Zining Wang, Huan Zhao, Han Ding
Summary: This paper presents a variable-parameter-model-based iterative pre-compensation method for tracking error, which can predict the optimal pre-compensation value when parameters of drive systems change. Experimental results demonstrate that this method can reduce tracking error and adapt to changes in moment-of-inertia.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Engineering, Chemical
Yuhang Zhang, Gexin Chen, Guishan Yan, Boyuan Li, Jianxin Lu, Wenguang Jiang
Summary: This paper proposes a multi-objective optimization model for the electro-hydraulic servo pump control system of the lithium-ion battery pole rolling mill. By comprehensively considering the dynamic, efficiency, and economic characteristics, the limitations in dynamic performance and large power loss of the EHSPCS are addressed. After optimization, the power loss is reduced by more than 7.2% and steady-state precision is greatly improved.
Article
Robotics
Zhihong Zou
Summary: This article proposes a methodology of using manipulability polytopes to characterize the manipulator's capability and presents a systematic architecture and detailed procedures for performance computation. The proposed methodology has been validated through two application examples.
INTERNATIONAL JOURNAL OF ADVANCED ROBOTIC SYSTEMS
(2023)
Article
Energy & Fuels
Gabriele Fambri, Paolo Marocco, Marco Badami, Dimosthenis Tsagkrasoulis
Summary: This paper analyzes the flexible use of heat pumps for building heating in the context of the Renewable Energy Community (REC). Using the flexibility of energy conversion and heat pumps, the paper demonstrates that the self-consumption of REC can be significantly increased. The virtual energy storage solution based on buildings is found to be more economically advantageous compared to traditional centralized electric battery storage system.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Mathematics, Interdisciplinary Applications
Zhou Bin, Duan Guang-Ren
Summary: In certain linear systems, the pole assignment problem can only be solved when the desired pole set of the closed-loop system does not include the zero set of the open-loop system, when considering the implementation issue of the controller. This means that controllability cannot ensure arbitrary pole assignment by state feedback.
JOURNAL OF SYSTEMS SCIENCE & COMPLEXITY
(2022)
