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流体肌肉(1)Fluidic muscle
气动装置的“流体肌肉”是一个全新的气动驱动器,由Festo公司开发研制。它的仿生肌主要是一个中空的橡胶柱体,内置芳族聚酰胺纤维。如果流体肌肉中充满空气,它的直径扩大、长度减小,从而进行流动的弹性运动。“流体肌肉”的应用使得运动过程不仅在动作、速度和强度上与人体运动相似,而且在灵敏度上也与人体运动相似。“流体肌肉”产生的力是相同体积气缸的七倍。“流体肌肉”坚固耐用,即使是在沙滩或尘埃等极端环境中都可以使用。The pneumatic “fluidic muscle”, a completely new kind of pneumatic drive, is a development by Festo. The bionic muscles consist mainly of a hollow elastomer cylinder embedded with aramid fibres. When the fluidic muscle fills with air, it increases in diameter and contracts in length, enabling a fluid, elastic movement. The use of the fluidic muscle enables motion sequences which approach human movement not only in terms of kinematics, speed and strength, but also sensitivity. The fluidic muscle can exert ten times the force of a comparably sized cylinder, is very sturdy, and can even be used under extreme conditions such as in sand or dust.
  1. 2009/12/2
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电流截止负反馈系统-机电传动控制第26讲
电流截止负反馈系统-机电传动控制第26讲!
  1. 2009/12/1
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投资机器人的10个理由
机器人已被证明能够在一个多种应用多种益处。 Manufacturers introducing robots to their production processes have typically seen a significant transformation in their productivity and efficiency.机器人制造商介绍他们的生产工序通常发生在他们的生产力和效率的重大转变。 The International Federation of Robotics recently undertook a survey that identified the top 10 reasons that manufacturers invest in robots.在国际机器人联合会最近进行了一个确定的10大理由机器人制造商在投资调查。 ABB has now built on that survey and developed a Guide to help you better understand the "10 good reasons for investing in robots" with real-life case studies from companies and integrators who exemplify each one of the reasons. ABB公司现已建立在该项调查,并制定了指南,帮助您更好地了解“10机器人的投资与现实生活的公司和系统集成体现每个谁的原因之一案例研究”的理由。 The 10 good reasons 10个很好的理由 They range from reducing operating costs, improving product quality and consistency, as well as the quality of work for employees, to increasing production output rates, product manufacturing flexibility and reducing material waste and increasing yield.它们的范围从降低运营成本,提高产品质量和一致性,以及对员工的工作质量,以期提高生产产出率,产品的制造灵活性和减少材料浪费和增加产量。
  1. 2009/11/30
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有静差调速系统-机电传动控制第25讲
有静差调速系统的基本组成和原理。电流正反馈和电压负反馈的综合反馈系统-高电阻电桥。
  1. 2009/11/30
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机电传动控制系统调速方法的选择-机电传动控制第24讲
在了解机电传动自动控制调速系统的组成、生产机械对调速系统提出的调速技术指标要求以及调速系统的调速性质与生产机械的负载特性合理匹配的重要性之基础上,重点掌握自动调速系统中各个基本环节,各种反馈环节的作用及特点,掌握各种常用的自动调速系统的调速原理、特点及适用场所,以便根据生产机械的特点和要求来正确选择个使用机电传动控制系统。 直流调速技术指标有哪些? 掌握晶闸管、晶体管调速的基本原理、优缺点等; 掌握系统调速范围、静差度、最高转速、转速降这四个基本概念及他们之间的关系。
  1. 2009/11/30
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晶闸管的过电压保护-机电传动控制第23讲
晶闸管的保护电路,大致可以分为两种情况:一种是在适当的地方安装保护器件,例如,R-C阻容吸收回路、限流电感、快速熔断器、压敏电阻或硒堆等。再一种则是采用电子保护电路,检测设备的输出电压或输入电流,当输出电压或输入电流超过允许值时,借助整流触发控制系统使整流桥短时内工作于有源逆变工作状态,从而抑制过电压或过电流的数值。
  1. 2009/11/27
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单结晶体管的自振荡电路-机电传动控制第22讲
单结晶体管 单结晶体管(简称UJT)又称基极二极管,它是一种只有一个PN结和两个电阻接触电极的半导体器件,它的基片为条状的高阻N型硅片,两端分别用欧姆接触引出两个基极b1和b2。在硅片中间略偏b2一侧用合金法制作一个P区作为发射极e。所谓振荡,是指在没有输入信号的情况下,电路输出一定频率、一定幅值的电压或电流信号。当合闸通电时,电容C上的电压为零,管予截止,电源VBB通过电阻R对C充电,随时间增长电容上电压uC逐渐增大;一旦UEB1增大到峰点电压UP后,管子进入负阻区,输入端等效电阻急剧减小,使C通过管子的输入回路迅速放电,iE随之迅速减小,当UEB1减小到谷点电压Uv后,管子截止;电容又开始充电。上述过程循环往返,只有当断电时才会停止,因而产生振荡。
  1. 2009/11/26
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无源逆变器的换相-机电传动控制第21讲
逆变——与整流相对应,直流电变成交流电。交流侧接电网,为有源逆变。交流侧接负载,为无源逆变。 逆变与变频:变频电路:分为交交变频和交直交变频两种。 交直交变频由交直变换(整流)和直交变换两部分组成,后一部分就是逆变。主要应用:各种直流电源,如蓄电池、干电池、太阳能电池等。 交流电机调速用变频器、不间断电源、感应加热电源等电力电子装置的核心部分都是逆变电路。单结晶体管触发电路。
  1. 2009/11/26
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自动风筝Sky_liner
放飞风筝需要娴熟的技能,Festo公司凭借其“空中自动化风筝”首次证实运用机电学原理可以实现风筝全程自动化控制。这是其在运用流动气流核心技术上的新发展。 “空中自动风筝”包含两个分别用机电控制器操纵的双线风筝。运用伺服电机和人造风,这两个风筝就可以实现室内自动化操作。各风筝线通过快速开关阀连接到Festo公司生产的DMSP射流臂,它可以缩短风筝线的长度。如果风筝断线,通过射流臂收缩风筝线就可以使其平稳飞行。It takes a fair amount of skill to fly a kite. With its Sky_liner project, Festo has become the first company to demonstrate that fully automated control can be achieved with the aid of mechatronics, thus linking a new development to its core competency of automation using moving air. Sky_liner consists of two two-line kites, each of which is controlled using a mechatronic control unit. The two kites are operated automatically indoors, using servo motors and artificial wind. Each line is connected via fast-switching valves to a fluidic muscle DMSP from Festo, which shortens the line and counterbalances the kite by contracting when the kite breaks away. It takes a fair amount of skill to fly a kite. With its Sky_liner project, Festo has become the first company to demonstrate that fully automated control can be achieved with the aid of mechatronics, thus linking a new development to its core competency of automation using moving air. Sky_liner consists of two two-line kites, each of which is controlled using a mechatronic control unit. The two kites are operated automatically indoors, using servo motors and artificial wind. Each line is connected via fast-switching valves to a fluidic muscle DMSP from Festo, which shortens the line and counterbalances the kite by contracting when the kite breaks away.
  1. 2009/11/23
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气动溜溜球YoYo
玩溜溜球需要技巧和耐心。通过YoYo系统,Festo证明了在机电元件的帮助下,加上Festo利用流动空气的核心自动化竞争力,能实现全自动控制。 YoYo由3个独立的溜溜球组成,其规格也各不相同,分别为16, 20 和24。所有溜溜球均采取不同种类的麦克斯韦转轮,每一个均由气动肌腱驱动。 Playing with a yo-yo takes skill and patience. With its YoYo, Festo has demonstrated that fully automated control can be achieved with the aid of mechatronics, thus linking with Festo core competency of automation to using moving air. The YoYo consists of three independent yo-yos of different sizes, 16, 20 and 24. All the yo-yos take the form of Maxwell wheels of various kinds, with each one being driven by a pneumatic muscle.
  1. 2009/11/19
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