毕业论文

打赏
当前位置: 毕业论文 > 外文文献翻译 >

电气定位器英文文献和中文翻译(6)

时间:2018-05-11 16:21来源:毕业论文
- Discrete units is shaft connected in correct orientation? The feedback pot strap may need replacing if orientation is incorrect. - Has main feedback pot been rotated, or does it need rotating becaus


           - Discrete units – is shaft connected in correct orientation? The feedback pot strap may need replacing if orientation is incorrect.
           - Has main feedback pot been rotated, or does it need rotating because the unit has been subjected to change in direction of movement on loss of signal? See section 4.11 – Resetting Feedback Pot.
           - Is air supply clean, dry, and oil free?
   Unit moves slower than expected up-scale or downscale:
           - Check air pressure – above 50psi / 3.5 Bar?
           - Check flow adjuster screws – has one been screwed in?
           - Is air supply clean, dry and oil free? If not there is a possibility that the positioner servo has been damaged.
   Movements are too jerky:
           - Adjust proportional gain to increase smoothness – then reset damping and setpoints as instructed in Section 4.
   Lack of sensitivity to changes in signal:
           - Adjust proportional gain to increase sensitivity – then reset damping, and setpoints as instructed in Section 4.
   Set point is overshot when positioner moves rapidly:

比例增益和衰减的设置
选择安装模式,并且第一个参数选择是自动PGAIN—比例增益。按压SET按钮,PGAIN指示灯会开始闪亮,这个参数值现在就可以通过根据需要按压UP或者DOWN按钮来增大或者减小。有29个PGAIN的设置可被选择,每按压UP或者DOWN键一次,其增益设置值改变为1.1倍。中间一个为默认设置,默认设置上面十四个和下面十四个都给予设置。超过第十四次按键就没有效果。
注:当向上或向下按钮被按下,新PGAIN值将被存储在非易失性内存并保留,
即使定位器在离开调整和设置模式时断电。
   定位器被激活同时调整pgain自动增益设置,并继续跟随输入信号。这提供了机会,在一个典型的应用方式,输入信号的变化,并定性观察的定位器的响应,以及它如何被改变pgain设置的影响,以便优化。按下UP按钮,最大化的灵敏度和准确性,在响应值增加时,信号更加通畅,如果你过于多增加了比例增益以至于定位器变得不稳定和容易受到周围干扰。按下DOWN键使斜波信号更平稳化,失去了快速响应信号的微小变化值。当正确的设置被找到,按SET键再次离开调整模式。
在PGAIN设置被优化后,应设置DAMP阻尼参数。在设置模式下,通过按UP键选择DAMP阻尼参数,直到阻尼灯持续亮。选择调整模式,按SET键DAMP指示灯将开始闪耀,再按UP或者DOWN键阻尼就增大或者减小。有29个可被选择的DAMP设置,每按压UP或者DOWN键一次,其阻尼设置值改变为1.1倍。中间一个为默认设置,默认设置上面十四个和下面十四个都给予设置。超过第十四次按键就没有效果。
注意:当UP或DOWN键被按下,新DAMP阻尼值存储在非易失性存储器,即使在调整和设置模式之前定位器被断电其值还被保留。
    定位器被激活同时调整PGAIN自动增益设置,并继续跟随输入信号。这样,就可以找到最优化的响应信号,同时也调整PGAIN阻尼值。试着给予一个阶跃信号让定位器以45度趋势达到设置点,同时调节DAMP,避免定位器过了设置点。重复这一过程,直至完成安装。安装完成以后,按SET按钮终止调节模式,此时,DAMP LED(发光二级管)会持续发光。 电气定位器英文文献和中文翻译(6):http://www.youerw.com/fanyi/lunwen_15480.html
------分隔线----------------------------
推荐内容