摘要
随着生产力的快速发展和现代化的不断提高,能源消费急剧增加,导致了能源危机和能源价格上涨,使得节能成为越来越重要的课题
液体粘性调速离合器是种新型传动装置。它利用摩擦片之间的油膜剪切力来传递动力并广泛应用于工业中的调速和节能领域。本文对液体粘性调速离合器的液压控制系统进行了研究和试验,重点研究了控制系统中的关键部件奥米伽阀的力学模型和静态性能。
第一章介绍了研究工作的背景和意义,包括了液体粘性调速离合器的优势和国内外发展状况。
第二章进行了液体粘性调速离合器的设计,包括方案设计、机械结构设计和液压系统设计,并介绍比较了现有的几种液压控制系统。
第三章是本文的重点。根据液压阀的基本理论和奥米伽阀的工作特点,详细描述了的各个作用力的产生机理和作用特点,并加以分析和计算。讨论了流量系数、速度系数、射流角等取值范围。
第四章通过牛顿运动定律和液体连续性方程,并根据奥米伽阀的结构提出的补充方程建立了奥米伽阀的数学模型。通过数学模型建立了奥米伽阀的传递函数和方框图,并讨论了阀的结构参数对阀的性能影响。
第五章介绍了关于奥米伽阀的试验,验证了奥米伽阀数学模型理论的正确性。
第六章对全文的研究工作进行了简要的总结和今后工作的展望。
With the rapid development of productivity and increasing promotion of modernization, the consumption of energy is greatly increased, which may lead to energy crisis and rising of the price of energy. As result, the target of energy saving has become a more and more emergent task.
The hydro-viscous is a new type of power transmission device, which has the shear of oil of film between two sets of discs, and widely used for speed regulation and energy saving. The research and experiment on the control system of hydro-viscous are introduced in this paper. The focuses are put on the force model and static performance ofΩvalve, the key part of the control system.
The background and significance of the research, including the advantage of the hydro-viscous are introduced in Chapter 1. And the development of hydro-viscous at home and abroad are given.
The hydro-viscous, ranging from the project design to mechanical design and hydraulic control system design, is designed in Chapter 2, Several types of control system are introduced.
Chapter 3 is the main part of this thesis. According to valve's work environment and the hydraulic valve basic theory, the mechanism and reason of every force are described in detail, and the forces, acted on theΩvalve, are calculated. The coefficient of flow and the speed factor are discussed within hydraulic theory.
Through the Newton's law of motion and the liquid equation of continuity, and the supplement equation which proposed according to valve's structure, the mathematical model has been established in Chapter 4.Through the establishment of a mathematical model of the valve and the transfer function block diagram, the structural performance parameters of the valve are discussed.
The experiments onΩvalve are introduced in Chapter 5 to prove the legitimacy of the theoretical analysis.
The summary of the paper’s study work and the prospect of the next step work are presented in Chapter 6.
引文
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