精品日韩网址导航-精品日韩一-精品日韩在-精品入口永久地址-精品三级国产欧美-精品三级网

Blog
電動(dòng)執(zhí)行器的控制精度問(wèn)題
發(fā)布時(shí)間:2020-07-28 13:46:02

After using the electric actuator for a period of time, you may sometimes find that the control accuracy of the electric actuator is not as precise as it was at the beginning, so we need to find the reason that affects the control accuracy of the electric actuator. Heli's years of experience have summarized some reasons and solutions that affect the control accuracy of electric actuators. Let's talk about the previous one.


1. The control valve oscillates. First find the vibration source. The vibration induced by the outside should keep the regulating valve away from the vibration source; eliminate or weaken the vibration intensity of the vibration source; use a fulcrum and other methods to reduce the vibration of the control valve if it is appropriate. The oscillation caused by the flow of the medium inside should try to reduce the resistance of the regulating valve. In the adjustment of things that are allowed by experience, a bypass pipe can be added. For the rapid response control system, a logarithmic spool can be used. Butterfly valves try their best to work within the range of 10~70°, avoiding the point of change of the effect of the medium on the valve body.

電動(dòng)執(zhí)行器

2. The electric actuator brake does not work. The brake is used to eliminate the influence of the inertia of the rotor and the output shaft and the load reaction torque after the electric actuator is powered off, so that the output shaft stops correctly at the corresponding position. If the brake does not work, it will reduce the control precision of the electric actuator. Because this should do the following.

(1) Adjust the braking torque according to the load volume;

(2) The clearance between the brake wheel and the brake disc should be adjusted properly;

(3) The brake shoe must have a sufficient friction coefficient, and it is forbidden to drip oil (do not exceed the maximum position of the oil mark when filling lubricating oil).


3. There are backward links in the output of electric actuators. The main backward link exists in the connection part of the output shaft of the angular stroke electric actuator and the adjusting mechanism (butterfly valve, etc.). Because of this, there must be no slack or gaps in the installation of all connecting rods and levers. Try to use a special coupling to replace the link mechanism. The pressure control system of the coke oven gas collector pipe of our factory thinks it is appropriate and uses a special coupling, the effect is satisfactory. When processing the coupling, please pay attention to the installation situation on the spot, and ensure that the output angle of the electric actuator is 0~90° and the valve body 0~90° angle and the valve position feedback signal 4~20mA.


主站蜘蛛池模板: 成年人网站在线免费观看 | 伊人网综合网 | 国产乱子轮XXX农村 国产伦精品一区二区三区免费 | 中文字幕一区二区在线播放 | AA级女人大片 | 亚洲欧洲免费三级网站 | 蝌蚪自拍网 | 99爱精品 | 果冻传媒董小宛一区二区 | 中文成人在线 | 午夜一区二区在线观看 | 97涩涩涩| 在线观看的免费网站 | 亚州免费一级毛片 | 综合激情婷婷 | 亚洲天堂国产 | 国产制服丝袜91在线 | 91高清免费国产自产拍2021 | 中文字幕无码家庭乱欲 | 久久精品午夜一区二区福利 | 一二三四日本无吗影视 | 最新无码国产在线视频9299 | 亚洲综合激情另类小说区 | 欧美性类s0x| 在线你懂得 | 色色嘻嘻嘻 | 久久久久久全都是精品app | 亚洲精品字幕 | 黑巨人与欧美精品一区 | 插插综合网 | 亚洲精品久久麻豆蜜桃 | 黄网站在线播放 | 点击进入好看的电影网站 | 亚洲精品久久久午夜福利电影网 | 亚洲国产精品久久久久网站 | 久久久久久久免费 | 国产精品久久久久久久专区 | 狠狠色视频 | 国产亚洲精品久久久久的角色 | 公交车上荫蒂添的好舒服的电影 | 快点使劲舒服爽还要高清 |