翼帆回轉系統(tǒng)液壓特性及控制策略實驗研究
發(fā)布時間：2019-06-16 15:14
【摘要】：近些年來,石油等化石燃料資源面臨枯竭的問題日益凸顯,造成國際原油價格不斷攀升,國際相關組織對船舶排放的溫室氣體(C02)、氮氧化物(NOx)等強制管理,促使航運界探索節(jié)能減排的新技術、新方法。自古以來船舶對風能的利用證明了其有效性和可行性,因此世界各國掀起了對風力助航的研究和開發(fā)熱潮。利用機翼型風帆(簡稱翼帆)輔助推進船舶航行時,其回轉系統(tǒng)通常采用液壓系統(tǒng)。該回轉系統(tǒng)需根據(jù)風場情況,精確地調(diào)整和保持翼帆至最佳攻角,即要求翼帆的回轉機構具有安全、可靠和穩(wěn)定等特性。然而目前對回轉系統(tǒng)的研究尚少且不夠深入,因此對翼帆回轉系統(tǒng)的研究,尤其是實驗研究具有重要的理論和實用價值。論文首先基于一種升阻比較高的多段翼風帆的空氣動力學特性,參考船舶甲板機械形式、原理,設計翼帆回轉實驗臺及其液壓驅動系統(tǒng)原理圖；其次,根據(jù)翼帆受力情況,對實驗臺主要設備進行選型計算,完成翼帆回轉實驗臺的搭建；再次,通過實驗研究,得到系統(tǒng)轉速、壓力和風阻力矩負載擾動等特性；最后,提出翼帆回轉基本控制策略,對起動、制動過程中控制信號類型和時長,以及非線性補償控制進行實驗研究,驗證這些基本控制策略的有效性和可行性。論文基于翼帆回轉實驗臺的實驗研究,得到以下結論：所設計翼帆回轉系統(tǒng)能夠滿足對翼帆回轉和液壓驅動系統(tǒng)特性的研究要求；隨機風負載擾動對液壓系統(tǒng)影響較大,在連續(xù)往復擾動下液壓系統(tǒng)壓力波動劇烈,不適合啟用翼帆；起動、制動過程中,在正弦信號控制下,液壓系統(tǒng)最穩(wěn)定,起動、制動時間為2s最佳；非線性補償控制能夠提高翼帆回轉精度。搭建的翼帆回轉系統(tǒng)以及液壓系統(tǒng)的特性為實船翼帆回轉系統(tǒng)的設計和回轉控制器的控制策略、算法的提出奠定了理論和實驗基礎。
[Abstract]:In recent years, the problem of depletion of fossil fuel resources such as oil has become increasingly prominent, resulting in the rising price of international crude oil. The mandatory management of greenhouse gases (CO2) and nitrogen oxide (NOx) emitted by ships by relevant international organizations has prompted the shipping industry to explore new technologies and methods for energy saving and emission reduction. Since ancient times, the utilization of wind energy by ships has proved its effectiveness and feasibility, so countries all over the world have set off an upsurge of research and development of wind navigation. When the airfoil sail is used to assist the navigation of the ship, the hydraulic system is usually used in the rotary system. According to the wind field, the rotary system needs to accurately adjust and maintain the wing sail to the best angle of attack, that is to say, the rotating mechanism of the wing sail is required to be safe, reliable and stable. However, at present, the research on the rotation system is still few and not deep enough, so the research on the wing sail rotation system, especially the experimental research, has important theoretical and practical value. Firstly, based on the aerodynamic characteristics of a multi-stage wing sail with high lift and drag, referring to the mechanical form and principle of the ship deck, the rotating test platform and its hydraulic drive system schematic diagram are designed. Secondly, according to the force of the wing sail, the main equipment of the test platform is selected and calculated, and the construction of the wing sail rotation test platform is completed. Thirdly, through experimental research, the characteristics of system speed, pressure and wind resistance moment load disturbance are obtained. finally, the basic control strategy of wing sail rotation is put forward, and the control signal type and time length in starting and braking process, as well as nonlinear compensation control are studied experimentally to verify the effectiveness and feasibility of these basic control strategies. Based on the experimental study of wing sail rotation test platform, the following conclusions are drawn: the designed wing sail rotation system can meet the research requirements of wing sail rotation and hydraulic drive system, and the random wind load disturbance has great influence on the hydraulic system, and the pressure fluctuation of hydraulic system is violent under continuous reciprocating disturbance, so it is not suitable to enable wing sail. In the process of starting and braking, under the control of sinusoidal signal, the hydraulic system is the most stable, the starting time is the best, and the nonlinear compensation control can improve the precision of wing sail rotation. The characteristics of the wing sail rotation system and hydraulic system lay a theoretical and experimental foundation for the design of the real ship wing sail rotation system and the control strategy of the rotation controller.
【學位授予單位】：大連海事大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U664
本文編號：2500633
[Abstract]:In recent years, the problem of depletion of fossil fuel resources such as oil has become increasingly prominent, resulting in the rising price of international crude oil. The mandatory management of greenhouse gases (CO2) and nitrogen oxide (NOx) emitted by ships by relevant international organizations has prompted the shipping industry to explore new technologies and methods for energy saving and emission reduction. Since ancient times, the utilization of wind energy by ships has proved its effectiveness and feasibility, so countries all over the world have set off an upsurge of research and development of wind navigation. When the airfoil sail is used to assist the navigation of the ship, the hydraulic system is usually used in the rotary system. According to the wind field, the rotary system needs to accurately adjust and maintain the wing sail to the best angle of attack, that is to say, the rotating mechanism of the wing sail is required to be safe, reliable and stable. However, at present, the research on the rotation system is still few and not deep enough, so the research on the wing sail rotation system, especially the experimental research, has important theoretical and practical value. Firstly, based on the aerodynamic characteristics of a multi-stage wing sail with high lift and drag, referring to the mechanical form and principle of the ship deck, the rotating test platform and its hydraulic drive system schematic diagram are designed. Secondly, according to the force of the wing sail, the main equipment of the test platform is selected and calculated, and the construction of the wing sail rotation test platform is completed. Thirdly, through experimental research, the characteristics of system speed, pressure and wind resistance moment load disturbance are obtained. finally, the basic control strategy of wing sail rotation is put forward, and the control signal type and time length in starting and braking process, as well as nonlinear compensation control are studied experimentally to verify the effectiveness and feasibility of these basic control strategies. Based on the experimental study of wing sail rotation test platform, the following conclusions are drawn: the designed wing sail rotation system can meet the research requirements of wing sail rotation and hydraulic drive system, and the random wind load disturbance has great influence on the hydraulic system, and the pressure fluctuation of hydraulic system is violent under continuous reciprocating disturbance, so it is not suitable to enable wing sail. In the process of starting and braking, under the control of sinusoidal signal, the hydraulic system is the most stable, the starting time is the best, and the nonlinear compensation control can improve the precision of wing sail rotation. The characteristics of the wing sail rotation system and hydraulic system lay a theoretical and experimental foundation for the design of the real ship wing sail rotation system and the control strategy of the rotation controller.
【學位授予單位】：大連海事大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U664
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相關期刊論文 前1條
1 李元奎;張英俊;孫培廷;張永寧;;船舶典型遠洋航線上風力資源時空分布特征[J];大連海事大學學報;2010年02期
相關碩士學位論文 前1條
1 王志洲;汽車起重機回轉液壓系統(tǒng)動態(tài)特性仿真與實驗研究[D];吉林大學;2011年
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