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    Adaptive Control of an Aerospace Electrohydrostatic Actuator with a Constant-Torque Variable-Displacement Pump

    Source: Journal of Aerospace Engineering:;2022:;Volume ( 035 ):;issue: 003::page 04022028
    Author:
    Yan Wang
    ,
    Mingkang Wang
    ,
    Jian Fu
    ,
    Yongling Fu
    DOI: 10.1061/(ASCE)AS.1943-5525.0001429
    Publisher: ASCE
    Abstract: An electrohydrostatic actuator (EHA) system is one of the key components of electric aircraft flight controls. The EHA system with fixed pump displacement and variable motor (EHA-FPVM) is widely used because of its simple structure, but the power weight ratio of EHA-FPVM is small, although it is very important to an aircraft. A novel EHA with a constant-torque variable-displacement pump (CTVDP) is proposed and simulated; it can substantially decrease the maximum motor-rated torque while reducing the servo-motor volume and weight. First, the CTVDP structure of the EHA system is proposed and a constant-torque variable-displacement pump is designed. Second, mathematical models of the EHA system structure are developed and simplified according to the constant-torque displacement–pressure law. Third, an adaptive backstepping control algorithm is proposed to improve position-tracking performance in the presence of the uncertain viscous damping coefficient. Finally, numerical simulations prove that the EHA system with CTVDP structure can further decrease motor maximum torque by approximately 37.5% and is robust against load impact, pump displacement variation, and parameters uncertainty. The results of this study can serve as the foundation for future application.
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      Adaptive Control of an Aerospace Electrohydrostatic Actuator with a Constant-Torque Variable-Displacement Pump

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4281750
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    contributor authorYan Wang
    contributor authorMingkang Wang
    contributor authorJian Fu
    contributor authorYongling Fu
    date accessioned2022-05-07T19:51:43Z
    date available2022-05-07T19:51:43Z
    date issued2022-03-14
    identifier other(ASCE)AS.1943-5525.0001429.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4281750
    description abstractAn electrohydrostatic actuator (EHA) system is one of the key components of electric aircraft flight controls. The EHA system with fixed pump displacement and variable motor (EHA-FPVM) is widely used because of its simple structure, but the power weight ratio of EHA-FPVM is small, although it is very important to an aircraft. A novel EHA with a constant-torque variable-displacement pump (CTVDP) is proposed and simulated; it can substantially decrease the maximum motor-rated torque while reducing the servo-motor volume and weight. First, the CTVDP structure of the EHA system is proposed and a constant-torque variable-displacement pump is designed. Second, mathematical models of the EHA system structure are developed and simplified according to the constant-torque displacement–pressure law. Third, an adaptive backstepping control algorithm is proposed to improve position-tracking performance in the presence of the uncertain viscous damping coefficient. Finally, numerical simulations prove that the EHA system with CTVDP structure can further decrease motor maximum torque by approximately 37.5% and is robust against load impact, pump displacement variation, and parameters uncertainty. The results of this study can serve as the foundation for future application.
    publisherASCE
    titleAdaptive Control of an Aerospace Electrohydrostatic Actuator with a Constant-Torque Variable-Displacement Pump
    typeJournal Paper
    journal volume35
    journal issue3
    journal titleJournal of Aerospace Engineering
    identifier doi10.1061/(ASCE)AS.1943-5525.0001429
    journal fristpage04022028
    journal lastpage04022028-10
    page10
    treeJournal of Aerospace Engineering:;2022:;Volume ( 035 ):;issue: 003
    contenttypeFulltext
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    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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