这是证明缸体在2/3的负载下运行效率最高。
我想你想要一步一步解决数学问题？
Here is the proof that the cylinder operates most efficiently at 2/3 of the load force.
I suppose you want the math solved step by step?
我认为第一步应该是明确设备的负载类型。因为66.7%的最高效率的推导前提是变量泵系统，负载类型是以惯性负载，弹性负载为主的场合。也就是说负载曲线为正椭圆的时候得出的结论。Dr. Pen,Can you share this book? A few pages along is not conducive to understanding the whole knowledge system.
There is more information about the VCCM equation here: https://forum.deltamotion.com/viewtopic.php?f=18&t=497
The VCCM equation is very important because it can be re-arranged to compute many things like cylinder areas and valve flow coefficients.
Finding the force or velocity for optimal power by hand is not easy.
There is a trick where squaring the equation simplifies the equation a lot.
Then solving is easy.
我被问及几次写一本书。 这不是有利可图的。 公式和图表使这本书太昂贵了。 由于主题太专业，销售额会很低。
The pump does not need to be a variable displacement pump. The supply pressure must be stable.
The pictures are not from a book. I use a software tools called Mathcad. Mathcad makes solving math, calculus and differential equations easy.
I wrote a design guide written in Chinese. It can be obtained from my distributors www.slsheng.com.cn
in Beijing or http://www.wxforever.com/brand/23.html
in Wuxi.
The design guide is a collection of articles I wrote for 'Hydraulics and Pneumatics" magazine.
I have been asked as few times to write a book. It is not profitable. The formulas and diagrams make the book too expensive. Sales would be low because the topic is too specialized.
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狗仔卡
发表于 2018-5-1 03:46:45
楼主
发表于 2018-5-1 09:16:53
