Modeling and Control of a Novel Linear-Driven Electro-Hydrostatic Actuator Using Energetic Macroscopic Representation

Zhang, Jiao; Zimeng, Wang; Li, Xinglu

doi:10.1115/1.4038658

Cited by 7 publications

(5 citation statements)

References 25 publications

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“…Ultimately, the research findings confirm the problem of force non-equalizing can be resolved and this system performance can also meet the expected requirements. In January 2018, Yan WANG et al [31] proposed a new type of linear-driven EHA (LEHA) stemming from the EMR (Energetic macroscopic representation), which is powered by a novel collaborative rectification pump (CRP). The EMR method in this article is an effective graphical modeling tool for multi-physical systems which can clearly illustrates the power flow and interaction between different subcomponents.…”

Section: The Evolvement Of Research and Application Of Eha In Aerospacementioning

confidence: 99%

A review on integral evolution of electro-hydraulic actuation in three momentous domains: aerospace, engineering machinery, and robotics

Liu,

SUN,

Yue

et al. 2024

Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023)

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The valve-controlled and pump-controlled hydraulic technology are both extensively used in hydraulic equipment nowadays, but the valve-controlled hydraulic technology has obvious shortcomings such as the lower power utilization rate due to the inevitable throttling and overflow losses. Pump-controlled hydraulic technology can enhance the efficiency of the entire hydraulic system owing to eliminate these energy losses and overcome the defects of valve-controlled technology. Electro-hydraulic actuator (EHA) is an archetypal pump control system with the huge advantages of high power-to-weight ratio, low energy consumption and compact structure. As a consequence, research on EHA has become a hot topic in the field of fluid power transmission and control by degrees. To date, many predecessors have conducted indepth exploration on the investigation related to EHA. However, the relevant literatures are extremely scattered, and the research directions of these papers are unequal so that it is quite necessary and meaningful to classify and summarize the whole development history of EHA. This review mainly introduces the evolvement of EHA in the three major fields that include aerospace, engineering machinery and robotics from the origin to the current, aiming at clarifying underlying issues and challenges in the study and application of EHA and discussing the further development tendency of this technology. The outlining content gathered in this document not only will be a valuable comprehensive source of information concerning EHA to scholars, but also provides a forceful reference for future studies with regard to high-power density and energy-efficient hydraulic technique.

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Section: The Evolvement Of Research and Application Of Eha In Aerospacementioning

confidence: 99%

A review on integral evolution of electro-hydraulic actuation in three momentous domains: aerospace, engineering machinery, and robotics

Liu,

SUN,

Yue

et al. 2024

Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023)

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“…where P 1a , P 1b , P 2a , P 2b are pressures of the forward and return chambers in unit 1 and unit 2. Thrusts of the motors F m1 , F m2 are also proportional to winding currents i 1 , i 2 , i.e., [7]…”

Section: Problem Formulation and Dynamic Modelsmentioning

confidence: 99%

“…The thrust force reached 500 N. Based on the linear oscillating motor, Li et al [6] developed the linear drive collaborative rectification structure pump (LDP). Jiao et al [7] invented the linear drive electro-hydrostatic actuator and experiments were conducted. The output cylinder produces the highest no-load output velocity of 62.2 mm/s and a maximum work pressure of 2.2 MPa [8].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Repetitive Control of A Linear Oscillating Motor under Periodic Hydraulic Step Load

Zhang

et al. 2020

Sensors

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A linear oscillating motor has a direct and efficient linear motion output and is widely used in linear actuation systems. The motor is often applied to compact hybrid electrohydraulic actuators to drive a linear pump. However, the periodic switch of the rectification valve in the pump brings the hydraulic step load to the linear motor, which causes periodic oscillation waveform distortions. The distortion results in the reduction of pumping capacity. The conventional feedback proportional-integral-derivative control is applied to the pump, however, this solution cannot handle the step load as well as resolving nonlinear properties and uncertainties. In this paper, we introduce a nonlinear model to identify periodic hydraulic load. Then, the loads are broken up into a set of simple terms by Fourier series approximation. The uncertain terms and other modeling uncertainties are estimated and compensated by the practical adaptive controller. A robust control term is also developed to handle uncertain nonlinearities. The controller overcame drawbacks of conventional repetitive controllers, such as heavy memory requirements and noise sensitivity. The controller can achieve a prescribed final tracking accuracy under periodic hydraulic load via Lyapunov analysis. Finally, experimental results on the linear oscillating motor-pump are provided for validation of the effectiveness of the scheme.

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“…In addition to the structure simplicity, the advantage of this pump is the flowrate direction control flexibility [21]. Wang et al used this pump to compose an EHA referred to as a linear-driven EHA (LEHA) and modeled the system by using an energetic macroscopic representation method [22]. This LEHA was kinematically simulated and the capability of its prototype was preliminarily tested [23].…”

Section: Introductionmentioning

confidence: 99%

Design, Analysis, and Verification of an Electro- Hydrostatic Actuator for Distributed Actuation System

Zhang

Zimeng

2020

Sensors

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In order to provide a simplified and low-cost solution of the terminal for a distributed actuation system, this paper proposes an electro-hydrostatic actuator (EHA) based on the linear drive principle. The proposed actuator is directly driven by a linear pump with a collaborative rectification mechanism, whose performance relies on the collaboration of the internal two units. A pair of linear oscillating motors are employed to drive the two pump units respectively. The control of the actuator is based on the modulation of the oscillating amplitude, frequency, and phase difference of the two motors. The advantage of this actuator is that no more valve control is needed to rectify the linear pump besides the high efficiency of the direct pump drive. In this paper, both schematic and detailed structure of the actuator is presented. The kinematic and dynamic characteristics are analyzed and modeled, based on which the control method is proposed. The experiments verify the validity of the actuator structure and control.

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Modeling and Control of a Novel Linear-Driven Electro-Hydrostatic Actuator Using Energetic Macroscopic Representation

Cited by 7 publications

References 25 publications

A review on integral evolution of electro-hydraulic actuation in three momentous domains: aerospace, engineering machinery, and robotics

A review on integral evolution of electro-hydraulic actuation in three momentous domains: aerospace, engineering machinery, and robotics

Adaptive Repetitive Control of A Linear Oscillating Motor under Periodic Hydraulic Step Load

Design, Analysis, and Verification of an Electro- Hydrostatic Actuator for Distributed Actuation System

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