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所在平台: Coursera |
课程主页: https://www.coursera.org/learn/fluid-power
课程评论：没有评论
课程名称：流体动力基础 课程概述：流体动力是所有传统动力传输技术中具有最高功率密度的技术。您将学习流体动力的优缺点，分析流体动力组件和电路，以及如何为应用设计和模拟流体动力电路。在本课程中，您将了解到流体动力组件、电路和系统的基本原理及其分析建模。 课程将涵盖流体动力与其他动力传输技术的比较，常见液压组件的操作、使用和符号，如何构建和分析液压组件和电路模型，以及如何设计和预测流体动力电路的性能。 本课程由国家科学基金会工程研究中心——紧凑高效流体动力中心支持，并得到国家流体动力协会的认可，后者是流体动力行业的领先贸易组织。 课程大纲： - 第一周：流体动力基础 该周内容：课程概述，液压与气压的介绍，以及通过气缸介绍流体动力的基本概念。 - 第二周：组件与概念：第一部分 该周内容：电路图，流体动力的书面语言，以及流体如何通过管道流动。我们希望您觉得割草机上的液压电路与我们一样有趣。 - 第三周：组件与概念：第二部分 该周内容：我们将深入讨论阀门和泵的基本功能，如何在液压电路中使用它们，以及如何计算给定流量的压力损失或反之。在讨论泵时，我们将探索多种正排量泵，分析流量波动与泵效率，并研究液压电源的支持组件。 - 第四周：通过仿真预测性能 该周内容：您将学习如何使用Simscape Fluids（前称SimHydraulics）进行流体动力仿真。讲座将介绍基于计算机的面向对象仿真，并进行Simscape Fluids的演示。作业将集中于学习使用Simscape Fluids，并鼓励您自行创建和运行基于示例的仿真。 - 第五周：流体性质 该周内容：深入探讨液压油的性质及其对电路操作的影响。讲座将展示水锤效应，并探讨流体不可压缩的假设。 - 第六周：高级组件与系统及课程总结 该周内容：介绍蓄能器和伺服阀，二者分别用于储存液压能和提供快速精确的流量控制。我们将总结课程中涉及的主题，考察伺服液压系统和液压混合动力汽车，并利用仿真探索这些先进系统的功能。 通过该课程，您将全面了解流体动力的基本原理及其在各类应用中的设计与仿真能力。
Name:Week 1: Fundamentals of Fluid Power
Description:This week: An overview of the course, introduction to hydraulics and pneumatics, and introduction to fundamental concepts of fluid power through the cylinder.
Name:Week 2: Components and Concepts: Part 1
Description:This week: circuit diagrams, the written language of fluid power, and how fluid flows through conduits. We hope that you find the hydraulic circuits on the mowing machine as interesting as we did.
Name:Week 3: Components and Concepts: Part 2
Description:This will be a busy week diving into valves and pumps. We will discuss how basic valves function, how to use them in hydraulic circuits, and how to calculate pressure drop for a given flow rate, or vice versa. The videos will directly address the discussion on the forum about seeing hydraulic components working in real world circuits. In our discussion of pumps we will look at many different positive displacement pumps, exploring flow ripple and pump efficiency, look at the supporting components that form a hydraulic power supply, and see how we can make a transmission with a hydraulic pump and a motor. We are now into the heart of this course; we hope you enjoy seeing the components come together into useful circuits.
Name:Week 4: Predicting Performance Through Simulation
Description:This week is entirely devoted to you learning how to use Simscape Fluids (formerly SimHydraulics), the fluid power simulation application that we use in the course. The lecture provides an introduction to computer-based, object-oriented simulation, and goes through a demo of using Simscape Fluids. The homework assignment contains the real work because this is where you will learn to use Simscape Fluids. The homework ends with an open-ended problem that encourages you to branch out on your own and create and run simulations based on examples listed in the course Simscape Fluids resource page or on any other fluid power system that interests you. We will be monitoring the discussion boards to help you with any technical problems with Simscape Fluids. *NOTE: The lecture videos were created using an earlier version of SimHydraulics; some small difference exist with the most recent version of Simscape Fluids, but the general approach is the same. *THERE IS NO QUIZ THIS WEEK as we recognize that a few of you may not be able to get Simscape Fluids running on your computer. Happy simulating!
Name:Week 5: Fluid Properties
Description:This week we will take a dive into hydraulic fluids (no pun intended) and how their properties and behavior influence the circuit operation. In the lectures, you will see the water hammer effect and explore the assumption of fluid incompressibility. We encourage you to use your new knowledge of fluid behavior and simulation to create virtual experiments that explore how fluid properties influence the behavior of a circuit. Share your observations on the discussion forum.
Name:Week 6: Advanced Components and Systems and Course Summary
Description:This week you will learn about two new components, the accumulator, which stores hydraulic energy, and the servo valve, which provides fast and precise flow control. We will then be pulling together topics from throughout the course to look at servo hydraulic systems and hydraulic hybrid vehicles. You will get a chance to use simulation to explore how these advanced systems function and how the behavior of individual components influences the system operation.
Fluid power has the highest power density of all conventional power-transmission technologies. Learn the benefits and limitations of fluid power, how to analyze fluid power components and circuits, and how to design and simulate fluid power circuits for applications. In this course, you will be introduced to the fundamental principles and analytical modeling of fluid power components, circuits, and systems. You will learn the benefits and limitations of fluid power compared with other power transmission technologies; the operation, use, and symbols of common hydraulic components; how to formulate and analyze models of hydraulic components and circuits; and how to design and predict the performance of fluid power circuits. This course is supported by the National Science Foundation Engineering Research Center for Compact and Efficient Fluid Power, and is endorsed by the National Fluid Power Association, the leading industry trade group in fluid power.
