液壓伺服系統設計指南VALVE SIZING AND PERFORMANCE ESTIMATION

江蘇谷樂液壓

1.0    OVERVIEW    1.1 Valve Sizing and  Performance issues    1.2 Spreadsheet  Applicability    1.3 Conventions

1.4   Spreadsheet

2.0    USING THE  SPREADSHEET

2.1 Data Entry

2.2  Spreadsheet Section 1 – ‘Cylinder and Pressure Supply Details’    2.3  Spreadsheet Section2 – ‘Valve Details’    2.4  Spreadsheet Section 4 – ‘Cylinder Drive Sizing Results’    2.5  Spreadsheet Section 3 – ‘Load and Pipe Details’

2.6  Spreadsheet Section 5 – ‘ Cylinder Drive Position Control Results’

/ i, r8 _% ]+ ]8 @; _) l; G

3.0    SUMMARY OF SERVO DESIGN GOOD PRACTICE

3 R0 Q3 N. t  V. f; K

6 u$ D. x2 O3 ?0 ~! ^) i8 Q

4.0    SPREADSHEET APPLICATION EXAMPLE    4.1 Application  (Spreadsheet Default) Details    4.2 Selecting Supply  Pressure and Actuator Size    4.3 Valve Sizing    4.4 Mass and Pipeline  Considerations    4.5 Closed Loop Position  Performance

5.0    SIZING AND PERFORMANCE ESTIMATION BY  MANUAL CALCUALTION    5.1 Component Sizing    5.2 Rules of Thumb for  Position Control Performance

6.0    OTHER OPERATING CONFIGURATIONS    6.1 Cylinder Effective  Mass Calculations    6.2 Three Port Operation    6.3 Pressure Control  Applications    6.4 Digital Controller  Calculations

2 n/ }, c1 V) s, [% v


& l7 W9 f6 {2 b3 y# B



( ^5 r7 {1 ^! |4 D

$ i9 m6 N8 `, q+ J0 v7 K + c' s; p$ T8 [0 k+ P Valve sizing and  performance estimation for electrohydraulic servo systems is a necessary    step if the  required performance is to be assured. On some occasions the valve itself    provides a  natural limit to performance, either in terms of maximum flow rates and  therefore    actuator  velocities, or else in terms of the dynamic performance (as described by the  valve    frequency  response). In the later case the valve performance limits the control gain  and  so    also the closed  loop dynamic behaviour and static accuracy.

/ D+ z" y! `7 ]* V

In other situations the  characteristics of

the actuator and  load being driven    provide a limit  to the closed loop    performance which  will not be improved    even with the  fastest, highest flowing or    most accurate of  servo valves.

Separating these  things out and

optimising  performance but without over    specifying the  valve is not always    obvious, and  generally requires a number    of calculations  to be undertaken. In this    Application Note  a spreadsheet is used    for this purpose.  A minimal amount of    data entry is  required from which the    maximum drive  capabilities and closed    loop static and  dynamic performance is    estimated.

) H3 t( w2 t- b. M# o/ t  _


2 w3 [; O% _: `% X* c& M/ j' |6 y
; N+ I6 H& F& U  g' x$ E; g

junshi1010

很深奧的趕腳！

liangquan6

這么專業的資料，我看看！

liangquan6

嗯，是MOOG的一個技術文檔，講 電液伺服控制 設計問題

a118376

+ J1 X! G3 C0 B* N& i) J' e1 N) Q這么專業的資料，我看看

江蘇谷樂液壓

只有快樂

moog的東西在伺服領域還是很牛啊，資料也很好，留下來慢慢研讀。

江蘇谷樂液壓

就是太貴，伺服閥G761都快一萬八，伺服液壓系統造價比較高，還得配伺服運動控制器，伺服油缸，磁致位移傳感器。

~心誠~

一分價錢一分貨啊，貴有他貴的道理

trenxim123

伺服還用不上，可以看看學習一下