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Review
Engineering, Multidisciplinary
Mohammad Yazdi et al.
Summary: Fault tree analysis (FTA) is a popular failure analysis technique that identifies the potential pathways leading to system or component failure. Scholars and practitioners have made efforts to address the shortcomings of conventional FTA over the past decade. This study conducts a systematic literature review from 2011 to 2021 and finds that there is a growing interest in FTA improvement, with Asia, particularly China, being a leading contributor in this area.
QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL
(2023)
Article
Multidisciplinary Sciences
Mingkun Yang et al.
Summary: The paper presents an EHSPCS that combines servo motors, fixed-displacement pumps, hydraulic cylinders, and functional valve groups into a highly-integrated volume servo control unit. To improve the dynamic performance and reduce thermal power loss, a multi-objective optimization design method is proposed. By intelligently optimizing parameters using a non-dominated sorting genetic algorithm, the system's characteristics are effectively matched, resulting in accelerated dynamic response and reduced thermal power loss.
Article
Automation & Control Systems
Yukun Zheng et al.
Summary: This article proposes a parameter identification algorithm combining recursive least squares (RLS) with modified nonlinear particle swarm optimization (NPSO) algorithm to accurately establish a mathematical model in the electro-hydraulic servo control system. Furthermore, another improved NPSO algorithm is introduced to search for the optimal proportional-integral (PI) controller gain of the nonlinear hydraulic system, taking into consideration the system performance indexes. The proposed method demonstrates higher identification and control accuracy compared to least squares (LS), RLS, PSO, and RLS-LPSO results.
Article
Engineering, Industrial
Peng Huang et al.
Summary: This paper proposes a novel tolerance design method for robot manipulators to select the optimal tolerances of kinematic parameters. An improved genetic algorithm is presented to solve the tolerance design model efficiently. The proposed method contributes to the optimal tolerance range selection and design of robot manipulators and other moving parts of machinery.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2023)
Article
Green & Sustainable Science & Technology
Yanhua Li et al.
Summary: An hydraulic energy-storage wave energy conversion system is developed and analyed in this paper, with stable operation, feasible topology scheme, modulation algorithm and control strategy. AC-side harmonics are effectively suppressed.
Article
Engineering, Multidisciplinary
Weiping Wang et al.
Summary: The paper proposes a hydraulic servo system structure based on dual hydraulic accumulators to reduce throttle loss and overflow loss simultaneously, and an output feedback controller based on the desired compensation approach. By analyzing the stability of the controller and the energy efficiency of the system, the results indicate that this method can significantly improve the system efficiency and ensure tracking accuracy.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Multidisciplinary Sciences
Yanjun Xiao et al.
Summary: This paper introduces an improved control system for lithium battery pole mill, which adopts the dual-chip control system architecture of ARM+DSP and realizes deflection control and tension control using fuzzy PID algorithm. The experiment demonstrates that the system has good anti-interference ability and stability.
Article
Engineering, Mechanical
Junhui Zhang et al.
Summary: Well-designed surface textures play a significant role in improving the efficiency and reducing wear in EHA pumps. This study proposes a multi-objective optimization model to obtain arbitrarily shaped surface textures at the slipper/swash plate interface, and verifies their positive effects in the EHA pump prototype.
FRONTIERS OF MECHANICAL ENGINEERING
(2022)
Article
Construction & Building Technology
Tao Zhu et al.
Summary: The paper proposes a position-pressure feedback control (PPFC) method to improve system response and position accuracy, which significantly reduces time delay and achieves high precision. The presented EHA actuator can follow higher frequency target trajectories under heavy load, and for better automatic control, PPFC strategy can be combined with adaptive controllers.
AUTOMATION IN CONSTRUCTION
(2022)
Article
Engineering, Chemical
Wenguang Jiang et al.
Summary: This paper investigates the static accuracy and dynamic performance issues of an electro-hydraulic servo pump control system, and establishes mathematical and Simulink simulation models based on this. The experimental results show that the system can achieve good position/force control after determining the parameters based on dynamic analysis.
Article
Thermodynamics
Jichao Hong et al.
Summary: This paper proposes a novel MEHPC electric vehicle, which integrates the traditional motor with the hydraulic pump/motor to realize the mutual conversion of electrical energy, mechanical energy, and hydraulic energy. By optimizing the electric-hydraulic ratio and considering multiple objectives, the MEHPC system can significantly reduce electric peak torque and improve battery state of charge. Compared to pure electric vehicles, the MEHPC system achieves a 33.54% reduction in energy consumption rate and provides better energy efficiency, stability, and economic performance, suggesting its potential as a good reference for the development of electro-hydraulic systems.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Engineering, Mechanical
Manh Hung Nguyen et al.
Summary: An active disturbance rejection control is designed to improve the position tracking performance of an electro-hydraulic actuation system in the presence of uncertainties and external disturbances. The disturbance observers estimate both matched and mismatched disturbances, with unmeasurable angular velocity robustly calculated using Levant's exact differentiator. The control design system based on the backstepping framework guarantees high-accuracy tracking performance, as verified through simulations on an electro-hydraulic rotary actuator.
Article
Engineering, Mechanical
Wenxiang Deng et al.
Summary: Valve dynamics significantly impact high-dynamic tracking performance in hydraulic systems, with the core effect being phase lag within the frequency range of interest. A time-delay model is proposed to approximate valve dynamics without increasing system order, reducing complexity in backstepping control. The proposed controller integrates robust delay compensating feedback and an extended state observer, ensuring system robustness and ultimately bounded tracking performance.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Computer Science, Information Systems
Van Du Phan et al.
Summary: This paper presents a novel adaptive fault-tolerant controller for addressing disturbances, internal leakage faults, and sensor faults in a typical electro-hydraulic rotary actuator simultaneously. By introducing a nonlinear unknown input observer, a radial basis function neural network, and an adaptive law, high tracking performance, robustness, and fast convergence are achieved.
Article
Automation & Control Systems
Jing Na et al.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2020)
Article
Automation & Control Systems
Chengwen Wang et al.
IET CONTROL THEORY AND APPLICATIONS
(2020)
Article
Engineering, Electrical & Electronic
Yun-Xin Xu et al.
JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS
(2019)
Article
Energy & Fuels
Dongsheng Ren et al.
JOURNAL OF ENERGY STORAGE
(2019)
Article
Automation & Control Systems
Qing Guo et al.
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
(2018)
Article
Automation & Control Systems
Chengwen Wang et al.
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
(2018)
Article
Automation & Control Systems
Qing Guo et al.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2017)
Article
Automation & Control Systems
Sofiane Ahmed Ali et al.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2016)
Article
Automation & Control Systems
Bingwei Gao et al.
Article
Automation & Control Systems
Wonhee Kim et al.
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
(2013)
