电大液压气动技术小抄参考

专业好文档安徽广播电视大学开放教育学院液压气动技术课程教学一体化设计方案2011年3月辅导教师：耿乾坤一、 课程概况液压气动技术是电大本课程是机械设计制造及其自动化专业学生必修的专业技术基础课。本课程的任务是使学生掌握液压技术、气动技术的基本理论和基础知识。学会液压、气动控制系统的组成原理，性能特点，为从事自动化系统设计及使用维护方面打下基础。本课程重点阐述液压传动技术，气动技术的流体力学基础，主要液压、气动元器件结构及工作原理、液压、气动系统的组成原理、特点及液压、气动系统的设计计算方法。学生应掌握液压、气动系统的基础理论；熟悉液压、气动系统工作原理、性能特点及系统的设计方法，了解液压气动元器件的结构。辅导教师联系方式：辅导教师：耿乾坤Email：1127569166二、课程教学媒体选择 本课程主要选用的教学媒体有文字主教材、音像教材、网络教材。1、文字主教材：液压气动技术王以轮主编 中央广播电视大学出版社(2002年10月出版)。2、网络教材：电大在线挂有教学信息、重难点辅导、作业安排、模拟试题等。三教学特点（有关指导思想）：（1）知识的先进性、系统性和实践性。（2）将重点放在技术应用方面。培养具有操作能力的技术人才。（3）以专业必需的基本概念和基本分析方法为主，突出基本知识和基本技能的工程应用；四教学要求： 1、 熟练掌握：要求学生能够全面、深入理解和熟练掌握所学内容，并能够用所学的内容分析、初步设计和解答与实际应用相关的问题，能够举一反三。2、 掌握：要求学生能够较好地理解和掌握，并且能够进行简单分析和判断。3、 了解：要求学生能够一般地了解所学内容。五、教学环节：（一）自主学习学员通过本课程的文字教材、录像教材、IP课件以及直播课堂等进行自学，上网浏览中央电大、省电大“电大在线”等栏目的教学辅导，完成作业和自测练习。学生应在教师的指导下，根据自身情况自主学习文字教材和IP课件，对重要问题和疑难问题应做好笔记，以便面授辅导时或通过其它手段向教师或同学寻求解答。学生应充分利用省电大的网上教学资源和现代化手段自主学习。（二）面授辅导辅导教师根据学员在学习中遇到的共性问题定期进行辅导与答疑，帮助学员理清学习思路，指导学习方法；分析学习要点，提出学习要求；精讲重点、难点，答疑解惑，提高学员的自主学习能力。（三）作业作业是教学活动的一个重要环节。学员应在一定的时限内独立完成布置的作业，辅导教师要认真批阅，从而掌握学员的学习情况，发现学员在学习中存在的问题，以便进行有针对性的辅导；同时对学员所完成的作业给予相应的百分制评价，作为形成性考核按一定比例计入平时成绩。（四）小组讨论在自主学习的基础上开展学习小组活动，交流学习经验和体会，讨论学习中的疑难问题，互相帮助，共同提高学习效率和效果。（五）其他形式学员遇到个别问题，可以通过面对面、电话、电子邮件、电大在线的课程讨论区等方式与辅导教师进行交流，获得辅导教师的个别答疑辅导。六、教学进度开放教育学院液压与气动技术课程教学活动安排表周次章节学习内容及建议教学安排活动地点第3周星期三导学，第一章绪论介绍学习资源，学习方法，学习重点和总体要求液压传动的工作原理；液压传动系统的组成和表示方式；液压传动优缺点及应用面授3月9日第4周星期三第二章 液压传动的流体力学基础液压油的性质和选用；液压静立基础；液压动力学基础；面授3月16日2.1，2.2，2.3第5周星期三第三章 液压泵和液压马达液压泵和液压马达概述；柱塞泵和柱塞马达；第一、二章课后习题讲解；面授3月23日2.4，2.5，2.6第6周星期三3月30日第三章液压泵和液压马达3.3，3.4，3.5叶片泵；齿轮泵和齿轮马达；液压泵和液压马达的选用面授第7周星期三第四章 液压缸液压缸的类型和工作原理；液压缸的机构；液压缸的设计计算；面授4月6日4.1，4.2，4.3第8周星期三第四章 液压缸液压缸的类型和工作原理；液压缸的机构；液压缸的设计计算； 面授4月13日4.1，4.2，4.3第9周星期三第五章 液压阀液压阀的分类；方向阀（单向阀，换向阀）；第三、四章课后习题讲解面授4月20日5.1，5.2第10周星期三第五章 液压阀压力阀（溢流阀，减压阀，顺序阀，压力继电器）；流量阀（流量控制原理，节流阀，调速阀）；比例阀与插装式锥阀（比例阀，插装式锥阀，电液伺服阀）；面授4月27日5.3，5.4，5.5，第11周星期三第六章 辅助元件滤油器；蓄能器；密封装置；油箱与管件面授5月4日6.1，6.2，6.3，6.4第12周星期三第七章 基础回路液压控制回路；第五、六章课后习题讲解；课堂答疑面授5月11日7.1； 第13周星期三第七章 基础回路速度控制回路；方向控制回路；其他基本回路 面授5月18日7.2；7.3；7.4第14周星期三第八章 典型液压系统组合机床液压系统；注塑机床液压系统；船舶起重机厂液压系统面授5月25日8.1，8.2，8.3第15周星期三第九章 液压系统的设计与计算液压系统设计的原理和依据、原理图；计算和选择液压元件；液压系统性能估计面授6月1日9.1，9.2，9.3，9.4,9.5，9.6第16周星期三第九章 液压系统的设计与计算绘制工作图和编写技术文件；液压系统设计计算举例面授6月8日9.5，9.6第17周星期三总复习课堂答疑，课堂讨论；历年考题的讲解；考试大纲的讲解面授6月15日七、考核评价1、该课程的教学环节及课程成绩分为三部分，即期末考试、形成性考核和实训成绩。分别占总成绩的70%、30%。2、期末考试：采用闭卷考试形式，期末考试全国统一命题，统一考试时间，统一评分标准。题型包括：填空题、判断题、单项选择题、计算题、看图题等。考试时间为90分钟，卷面成绩满分为100分，占本课程总成绩的70%。3、形成性考核成绩：本课程形成性作业共四次，每次作业满分为100分，总成绩为4次作业成绩得出平均分。占课程总成绩的30%。Winger Tuivasa-Sheck, who scored two tries in the Kiwis 20-18 semi-final win over England, has been passed fit after a lower-leg injury, while Slater has been named at full-back but is still recovering from a knee injury aggravated against USA.Both sides boast 100% records heading into the encounter but Australia have not conceded a try since Josh Charnleys effort in their first pool match against England on the opening day.Aussie winger Jarryd Hayne is the competitions top try scorer with nine, closely followed by Tuivasa-Sheck with eight.But it is recently named Rugby League International Federation player of the year Sonny Bill Williams who has attracted the most interest in the tournament so far.The Kiwi - with a tournament high 17 offloads - has the chance of becoming the first player to win the World Cup in both rugby league and rugby union after triumphing with the All Blacks in 2011.Id give every award back in a heartbeat just to get across the line this weekend, said Williams.The (lack of) air up there Watch mCayman Islands-based Webb, the head of Fifas anti-racism taskforce, is in London for the Football Associations 150th anniversary celebrations and will attend Citys Premier League match at Chelsea on Sunday.I am going to be at the match tomorrow and I have asked to meet Yaya Toure, he told BBC Sport.For me its about how he felt and I would like to speak to him first to find out what his experience was.Uefa hasopened disciplinary proceedings against CSKAfor the racist behaviour of their fans duringCitys 2-1 win.Michel Platini, president of European footballs governing body, has also ordered an immediate investigation into the referees actions.CSKA said they were surprised and disappointed by Toures complaint. In a statement the Russian side added: We found no racist insults from fans of CSKA. Baumgartner the disappointing news: Mission aborted.The supersonic descent could happen as early as Sunda.The weather plays an important role in this mission. Starting at the ground, conditions have to be very calm - winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our day-to-day weather lives. It will climb higher than the tip of Mount Everest (5.5 miles/8.85 kilometers), drifting even higher than the cruising altitude of commercial airliners (5.6 miles/9.17 kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence.The balloon will slowly drift to the edge of space at 120,000 feet ( Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform.They blew it in 2008 when they got caught cold in the final and they will not make the same mistake against the Kiwis in Manchester.Five years ago they cruised through to the final and so far history has repeated itself here - the last try they conceded was scored by Englands Josh Charnley in the opening game of the tournament.That could be classed as a weakness, a team under-cooked - but I have been impressed by the Kangaroos focus in their games since then.They have been concentrating on the sort of stuff that wins you tough, even contests - strong defence, especially on their own goal-line, completing sets and a good kick-chase. Theyve been great at all the unglamorous stuff that often goes unnoticed in the stands but not by your team-mates.It is as though their entire tournament has been preparation for the final.In Johnathan Thurston, Cooper Cronk, Cameron Smith and either Billy Slater or Greg Inglis at full-back they have a spine that is unmatched in rugby league. They have played in so many high-pressure games - a priceless asset going into Saturday.The Kiwis are a lot less experienced but winning a dramatic match like their semi-final against England will do wonders for their confidence.They defeated Australia in the Four Nations final in 2010 and the last World Cup, and know they can rise to the big occasion.