Title:
FLOW CHARACTERISTICS APPROXIMATION CALCULATING METHOD OF PNEUMATIC APPARATUS
Document Type and Number:
Japanese Patent JP3672811
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a flow characteristics approximation calculation method wherein sufficient approximation is obtained to flow characteristics of a pneumatic apparatus.
SOLUTION: This flow characteristics approximation calculation method obtains flow characteristics approximated to measured the flow characteristics of the pneumatic apparatus in the case of subsonic flow. Letting P1 be a primary side gauge pressure of the pneumatic apparatus, P2 secondary side gauge pressure of the pneumatic apparatus, T fluid air temperature (°C), a be a correction parameter with respect to {(P2+0.1)/(P1+0.1)} when a volume flow rate Q becomes '0', b be critical pressure ratio, c be acoustic velocity conductance, n be a correction parameter (0<n<1), and m be a correction parameter for increasing the degree of approximation, the flow characteristics are obtained by approximation operation of the volume flow rate from equation (1).
Inventors:
Mitsuru Senoo
Zhang Gohei
Naotake Oneyama
Zhang Gohei
Naotake Oneyama
Application Number:
JP2000303257A
Publication Date:
July 20, 2005
Filing Date:
October 03, 2000
Export Citation:
Assignee:
SMC Corporation
International Classes:
G01F1/00; F15B11/06; G01F1/34; (IPC1-7): G01F1/34
Domestic Patent References:
| JP2000179503A | ||||
| JP3129198A |
Attorney, Agent or Firm:
Takehiro Chiba
Tatsuhiko Sato
Tatsuhiko Sato