EP0016862B1 - Dispositif de commande pour système hydraulique - Google Patents
Dispositif de commande pour système hydraulique Download PDFInfo
- Publication number
- EP0016862B1 EP0016862B1 EP79104835A EP79104835A EP0016862B1 EP 0016862 B1 EP0016862 B1 EP 0016862B1 EP 79104835 A EP79104835 A EP 79104835A EP 79104835 A EP79104835 A EP 79104835A EP 0016862 B1 EP0016862 B1 EP 0016862B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- output signal
- switching
- way valve
- shaper
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000002441 reversible effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S60/00—Power plants
- Y10S60/911—Fluid motor system incorporating electrical system
Definitions
- the invention relates to a control device for a hydraulic system according to the preamble of the main claim.
- a control device for a hydraulic system according to the preamble of the main claim.
- the direction of the consumer is reversed, e.g. a hydraulic cylinder or a hydraulic motor - by means of a directional valve, which is operated, for example, by hand or by pressure valves or electromagnets.
- Such actuation devices have the disadvantage that the consumer accelerates and decelerates abruptly at least when the directional valve is actuated quickly, which is undesirable in many cases.
- the control device with the characterizing features of the main claim has the advantage that even if the directional valve designed as a multi-way valve is actuated quickly, the consumer is accelerated and decelerated smoothly, especially when switching from one consumer to another, if the pump optionally feeds several drives .
- FIG. 1 shows a control device for a hydraulic system in a schematic representation
- Figure 2 is a diagram.
- An adjustable but not reversible pump 10 sucks pressure medium from a container 11 and conveys it via a delivery line 12 to a 4/3-way valve 13 with the switching positions I, II and III.
- the directional control valve 13 is actuated electromagnetically by two magnets 14, 15.
- Two lines 16, 17 lead from the directional control valve 13 via an electromagnetically actuated 4/2-way valve 18 to a double-acting hydraulic cylinder 19.
- a line 20 leads from the line 16, from the line 17 a line 21 to an electromagnetically actuated 4/2-way valve 23, from which the lines lead to a hydraulic motor with changing direction of movement 24.
- the stroke-generating member 26 of the pump 10 is adjusted with the aid of a servo motor 27.
- An electric setpoint generator 28, e.g. a potentiometer with a hand lever is used, the output signal 28 'of which can be changed arbitrarily - that is also in a step-like manner - between plus maximum and minus maximum.
- This rapidly changing signal 28 ' is sent to a ramp generator 29 which e.g. can be a capacitor or a choke, which forms a signal 29 'with a defined positive or negative slope.
- an absolute value generator 30 which can be a full-wave rectifier, for example, the signal 29 'is rectified, so that the servomotor 27 always receives a signal 30' which changes between zero and a maximum according to the ability of the pump, but does not change its direction.
- the output signal 29 'of the ramp generator 29 is additionally fed to a switching amplifier 31 and 32, for example, these can be Schmidt triggers.
- the switching amplifier 31 responds with a small threshold value 33 - see FIG. 2 - to positive signal 29 ', the switching amplifier 32, however, also with a small threshold value 34 to negative signal 29'. This gives a directional decision for the pressure medium flow.
- the output signals 31 'and 32' of the switching amplifiers 31, 32 excite the magnets 14, 15, the direction of the pressure medium flow is predetermined by the directional control valve 13.
- the respective gap 35 between the signals 31 ', 32' is used to carry out further switching operations, e.g.
- a non-reversible pump with a variable delivery rate has the character of a reversible pump.
- the defined increase or decrease in the pressure medium flow results in a defined acceleration or deceleration of the consumers, and shocks are avoided.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2902264 | 1979-01-22 | ||
DE19792902264 DE2902264A1 (de) | 1979-01-22 | 1979-01-22 | Steuereinrichtung fuer eine hydraulikanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0016862A1 EP0016862A1 (fr) | 1980-10-15 |
EP0016862B1 true EP0016862B1 (fr) | 1982-02-03 |
Family
ID=6061085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP79104835A Expired EP0016862B1 (fr) | 1979-01-22 | 1979-12-03 | Dispositif de commande pour système hydraulique |
Country Status (3)
Country | Link |
---|---|
US (1) | US4375747A (fr) |
EP (1) | EP0016862B1 (fr) |
DE (2) | DE2902264A1 (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3266290D1 (en) * | 1981-03-30 | 1985-10-24 | Hitachi Construction Machinery | Control system for hydraulic circuit means including a variable displacement pump and actuator means |
DE3222008A1 (de) * | 1982-06-11 | 1983-12-15 | Sperry-Vickers Zweigniederlassung der Sperry GmbH, 6380 Bad Homburg | Hydrostatischer oder pneumatischer antrieb sowie verfahren zu seinem betrieb |
US4655039A (en) * | 1985-06-20 | 1987-04-07 | The Raymond Corporation | Lift system |
US4741159A (en) * | 1986-04-08 | 1988-05-03 | Vickers, Incorporated | Power transmission |
DE3716200C2 (de) * | 1987-05-14 | 1997-08-28 | Linde Ag | Steuer- und Regeleinrichtung für ein hydrostatisches Antriebsaggregat und Verfahren zum Betreiben eines solchen |
US5046312A (en) * | 1988-07-08 | 1991-09-10 | Kubota, Ltd. | Swivel speed control circuit for working vehicle |
DE4303760C2 (de) * | 1993-02-09 | 1995-12-14 | Procontrol Ag | Verfahren und Vorrichtung zum hydraulischen Massenantrieb insbesondere von Spritzgiessmaschinen |
DE4327313C2 (de) * | 1993-08-13 | 2001-07-05 | Mannesmann Rexroth Ag | Verfahren zur Druckregelung einer hydrostatischen Maschine mit verstellbarem Fördervolumen |
DE19743801A1 (de) * | 1997-10-02 | 1999-04-08 | Claas Selbstfahr Erntemasch | Vorrichtung zur Steuerung eines Hydraulikzylinders in einer selbstfahrenden Erntemaschine |
DE102009020046B4 (de) * | 2009-05-05 | 2012-08-16 | Kraussmaffei Technologies Gmbh | Elektrisch betriebene hydraulische Antriebseinrichtung als Nebenaggregat für eine Spritzgiessmaschine |
RU2534128C1 (ru) * | 2013-03-28 | 2014-11-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Курганский государственный университет" | Система управления движением быстроходной транспортной машины |
DE102014226617A1 (de) * | 2014-12-19 | 2016-06-23 | Robert Bosch Gmbh | Antriebsregelvorrichtung für einen elektro-hydraulischen Antrieb |
CN107131159B (zh) * | 2017-06-20 | 2018-09-25 | 北京交通大学 | 重力载荷下电动静液作动系统 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2643515A (en) * | 1950-10-17 | 1953-06-30 | Chester A Harsch | Electric control system for expansible motor operated boom |
DE1807172A1 (de) * | 1968-11-06 | 1970-06-11 | Bosch Gmbh Robert | Einrichtung zur elektrohydraulischen Fernsteuerung hydraulischer Wegeventile |
US3712180A (en) * | 1970-11-27 | 1973-01-23 | Gen Electric | Bilateral servo controlled manipulator |
US3946284A (en) * | 1974-08-19 | 1976-03-23 | Rexnord, Inc. | Circuit for controlling damp shock loading |
US3952509A (en) * | 1975-04-10 | 1976-04-27 | Allis-Chalmers Corporation | Hydraulic system combining open center and closed center hydraulic circuits |
US3956772A (en) * | 1975-07-11 | 1976-05-18 | The United States Of America As Represented By The Secretary Of The Army | Control system for pre-inflation of pilot's G-suit |
DE2630468A1 (de) * | 1976-07-07 | 1978-01-12 | Bosch Gmbh Robert | Hydraulisches steuersystem fuer wenigstens zwei verbraucher |
DE2808694C2 (de) * | 1978-03-01 | 1986-09-25 | Robert Bosch Gmbh, 7000 Stuttgart | Positioniereinrichtung für einen hydraulischen Antrieb |
-
1979
- 1979-01-22 DE DE19792902264 patent/DE2902264A1/de not_active Withdrawn
- 1979-12-03 DE DE7979104835T patent/DE2962071D1/de not_active Expired
- 1979-12-03 EP EP79104835A patent/EP0016862B1/fr not_active Expired
- 1979-12-12 US US06/102,942 patent/US4375747A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE2962071D1 (en) | 1982-03-11 |
EP0016862A1 (fr) | 1980-10-15 |
DE2902264A1 (de) | 1980-07-24 |
US4375747A (en) | 1983-03-08 |
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