WO1998017986A1 - Verfahren zur darstellung eines hydraulisch beaufschlagten druckmittelnehmers - Google Patents
Verfahren zur darstellung eines hydraulisch beaufschlagten druckmittelnehmers Download PDFInfo
- Publication number
- WO1998017986A1 WO1998017986A1 PCT/EP1997/005519 EP9705519W WO9817986A1 WO 1998017986 A1 WO1998017986 A1 WO 1998017986A1 EP 9705519 W EP9705519 W EP 9705519W WO 9817986 A1 WO9817986 A1 WO 9817986A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- simulation
- volume
- characteristic
- gas
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/007—Simulation or modelling
Definitions
- the invention relates to a method for representing a hydraulic pressure medium receiver on a test bench by means of simulation of the characteristic pressure and volume absorption of the pressure medium receiver.
- Fig. 2 is a schematic diagram for the technical implementation of the characteristic shown in FIG. 1.
- Fig. 1 shows both the characteristic curve III, which is obtained by simulating the pressure medium consumer or pressure medium consumer when two springs with different spring stiffness are used, and a further, dashed-line characteristic curve IV, which shows the actual behavior of the pressure medium consumer or pressure medium consumer to be simulated reproduces.
- this characteristic curve IV corresponds exactly to the result of the simulation method now claimed according to the invention, for which purpose the characteristic pressure change plotted along the abscissa and the characteristic increase in volume plotted along the ordinate in the first simulation section I are caused by the use of a gas which is followed by a second simulation section II based on the use of a liquid.
- the invention is therefore based on the idea that the first simulation section I, the characteristic IV of which merges parabolically into the second simulation section II, is simulated by the gas, acting functionally like a gas spring.
- the second simulation section II of the characteristic curve IV according to FIG. 1 runs relatively flat and linearly rising, for which purpose the use of a liquid with the lowest possible compressibility, preferably brake fluid, is suitable according to the invention in almost perfect alignment of the further simulation characteristic curve with the real characteristic curve.
- the volume of the gas and thus the gas spring characteristics and the hydraulic volume of the liquid are then sufficient to precisely adapt the dashed-line simulation characteristic curve, which also corresponds to the actual characteristic curve profile of the pressure transducer, to different pressure fluid sensors.
- An expansion option for the invention can be seen in an electronic control which makes it possible to describe the desired characteristic curve IV according to the illustration with three parameters in a convenient manner.
- This electronic control then preferably regulates the desired characteristic curve IV by varying the hydraulic volume and the gas spring effect.
- the advantage of such an additional electronic control lies not only in the ease of use, but can also be seen in the fact that even without the intervention of the electronic control, a trouble-free operation of the test sequence is ensured.
- 2 shows, using an exemplary embodiment, the essential elements for simulating a pressure medium receiver or pressure medium consumer, which has the characteristic curve characteristic described and desired above.
- 2 shows that the simulation of a pressure medium receiver requires several functionally separate simulation chambers 1, 2, 3, which are part of two working cylinders 6, 7 to be acted upon independently of one another, in which for varying the volume absorption in the simulation chambers 1 , 2.3 reciprocating piston 4.5 are arranged, which are preferably each actuated by an electric drive 8.9.
- a control unit 10 is also provided, which can be designed such that the volume / pressure characteristics representative of certain pressure mediums are stored in it, these stored values being activated by corresponding electrical signals to activate the Drive 8.9, which ensure the required state quantities of the gas and the liquid in the simulation chambers 1,2,3.
- the method and the use of the method for the simulation device shown in principle in FIG. 2 are particularly suitable for the representative simulation of different vehicle wheel brakes on the test bench, for which the line branch 11 connected to the test bench leads to brake fluid, which both the simulation chamber 1 of the Working cylinder 6 and the simulation chamber 2 of the working cylinder 7 fills.
- the hydraulic volume thus located in the working cylinder 6 is directly under the action of the lifting piston 4 in the working cylinder 6, which is moved by the electromotive drive 8 to represent the desired volume model by means of the control unit 10.
- the simulation chamber 2 of the working cylinder 7, which is also connected to the line branch 11, is not directly coupled to the reciprocating piston 5, but rather by a floating piston 12 or a membrane in the working cylinder 7 and the simulation chamber 3 which receives a gas Cut.
- the control of the drive 9 by the control unit 10 inevitably leads to a compression of the gas clamped in the simulation chamber 3 (gas storage) as long as the counterpressure effective through the liquid of the simulation chamber 2 allows the floating piston 12 to remain in its basic position shown in the illustration. If the liquid pressure acting on the floating piston 12 or the membrane exceeds the back pressure of the gas in the simulation chamber 3, the floating piston 12 or the membrane moves with additional volume in the simulation chamber 2 in the direction of the reciprocating piston 5.
- the simulation sections I, II identified in FIG. 1 can thus be realized and influenced remarkably simply and yet precisely through the use of a gas and a liquid via the positions of the reciprocating pistons 4, 5.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10518889A JP2001502797A (ja) | 1996-10-21 | 1997-10-08 | 液圧的に動作する受容器を実現する方法 |
DE59702324T DE59702324D1 (de) | 1996-10-21 | 1997-10-08 | Verfahren zur darstellung eines hydraulisch beaufschlagten druckmittelnehmers |
EP97911193A EP0932822B1 (de) | 1996-10-21 | 1997-10-08 | Verfahren zur darstellung eines hydraulisch beaufschlagten druckmittelnehmers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19643292.8 | 1996-10-21 | ||
DE19643292A DE19643292A1 (de) | 1996-10-21 | 1996-10-21 | Verfahren zur Darstellung eines hydraulisch beaufschlagten Druckmittelnehmers |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998017986A1 true WO1998017986A1 (de) | 1998-04-30 |
Family
ID=7809270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/005519 WO1998017986A1 (de) | 1996-10-21 | 1997-10-08 | Verfahren zur darstellung eines hydraulisch beaufschlagten druckmittelnehmers |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0932822B1 (de) |
JP (1) | JP2001502797A (de) |
DE (2) | DE19643292A1 (de) |
WO (1) | WO1998017986A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115541169A (zh) * | 2022-11-16 | 2022-12-30 | 中国航空工业集团公司沈阳空气动力研究所 | 一种叠加驱动管风洞紧凑式快开系统及方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108534948B (zh) * | 2018-04-02 | 2019-12-03 | 中国矿业大学 | 一种矿用压力传感器的在线检测装置及方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0310113A2 (de) * | 1987-09-30 | 1989-04-05 | Sumitomo Electric Industries Limited | Vorrichtung zum Prüfen eines mit Bremsflüssigkeit gefüllten Druckkreises eines Antiblockierungs-Kontrollsystems |
JPH04370407A (ja) * | 1991-06-18 | 1992-12-22 | Toshiba Corp | アクチュエータの制御装置 |
DE4413579A1 (de) * | 1994-04-19 | 1995-10-26 | Teves Gmbh Alfred | Elektronisch regelbares Bremsbetätigungssystem |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3803594A1 (de) * | 1988-02-06 | 1989-08-17 | Ver Foerderung Inst Kunststoff | Verfahren und vorrichtung zur messung des gasbeladungszustandes eines fluids bei der verarbeitung von gefuellten und ungefuellten fluiden |
DE3911656A1 (de) * | 1989-04-10 | 1990-10-11 | Ekuma Werkzeug & Maschbau | Pruefgeraet fuer die bremsanlage eines kraftfahrzeugs |
-
1996
- 1996-10-21 DE DE19643292A patent/DE19643292A1/de not_active Withdrawn
-
1997
- 1997-10-08 DE DE59702324T patent/DE59702324D1/de not_active Expired - Fee Related
- 1997-10-08 JP JP10518889A patent/JP2001502797A/ja active Pending
- 1997-10-08 EP EP97911193A patent/EP0932822B1/de not_active Expired - Lifetime
- 1997-10-08 WO PCT/EP1997/005519 patent/WO1998017986A1/de active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0310113A2 (de) * | 1987-09-30 | 1989-04-05 | Sumitomo Electric Industries Limited | Vorrichtung zum Prüfen eines mit Bremsflüssigkeit gefüllten Druckkreises eines Antiblockierungs-Kontrollsystems |
JPH04370407A (ja) * | 1991-06-18 | 1992-12-22 | Toshiba Corp | アクチュエータの制御装置 |
DE4413579A1 (de) * | 1994-04-19 | 1995-10-26 | Teves Gmbh Alfred | Elektronisch regelbares Bremsbetätigungssystem |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115541169A (zh) * | 2022-11-16 | 2022-12-30 | 中国航空工业集团公司沈阳空气动力研究所 | 一种叠加驱动管风洞紧凑式快开系统及方法 |
CN115541169B (zh) * | 2022-11-16 | 2023-03-14 | 中国航空工业集团公司沈阳空气动力研究所 | 一种叠加驱动管风洞紧凑式快开系统及方法 |
Also Published As
Publication number | Publication date |
---|---|
EP0932822B1 (de) | 2000-09-06 |
JP2001502797A (ja) | 2001-02-27 |
EP0932822A1 (de) | 1999-08-04 |
DE19643292A1 (de) | 1998-04-23 |
DE59702324D1 (de) | 2000-10-12 |
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