WO2004031593A1 - Regelvorrichtung für ein hydraulisches system - Google Patents
Regelvorrichtung für ein hydraulisches system Download PDFInfo
- Publication number
- WO2004031593A1 WO2004031593A1 PCT/IB2003/003780 IB0303780W WO2004031593A1 WO 2004031593 A1 WO2004031593 A1 WO 2004031593A1 IB 0303780 W IB0303780 W IB 0303780W WO 2004031593 A1 WO2004031593 A1 WO 2004031593A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bus
- sensor
- valve
- control
- plug
- 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
- 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
- F15B21/085—Servomotor systems incorporating electrically operated control means using a data bus, e.g. "CANBUS"
-
- 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
- F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
- F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
- F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
- F15B9/09—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor with electrical control means
Definitions
- a device for transmitting control and or sensor signals is known from WO-A2-01 / 18763.
- An electronic control and / or data receiving device is arranged between a pneumatic device, which contains two valves controlled by a microcontroller, and a bus.
- the data exchange between the pneumatic device and the electronic control and / or data receiving device takes place via a pneumatic line. Accordingly, it is necessary to provide a bidirectional converter in the pneumatic device and in the electronic control and / or data receiving device. Data or control signals are thus converted twice from an electrical signal into a print or vice versa.
- Such a solution is complex and may not be particularly precise, because any signal conversion can result in a falsification of the signal. For fast data or
- Command transmission is also likely to hinder the pneumatic transmission medium from being compressible. Due to the double signal conversion and the compressibility of the transmission medium, tolerance and thus security problems are not unlikely.
- valve arrangement is known in which several valves are combined to form an assembly.
- the valves are operated electrically by a programmable control device.
- the control device can be programmed via a bus, but then mainly works autonomously.
- External sensors and / or control signal transmitters can therefore be connected to the valve arrangement, which enable such autonomous operation. It is not recognizable from this document that several such valve arrangements could be controllable by a higher-level job computer.
- the invention has for its object to provide a control device in which such security problems are avoided.
- Fig. 4 is a schematic view with electrical connections to three valves and
- Fig. 5 is a plan view of a plug connection.
- bus 1 shows a prior art which differs from DE-Al-199 53 189.
- bus 1 which connects a job computer 2 to valves 3 to be controlled.
- a first valve 3.1, a second valve 3.2 and a third valve 3.3 are shown.
- Each valve 3 is connected to bus 1 via a bus interface 4.
- a first bus interface 4.1, a second bus interface 4.2 and a third bus interface 4.3 are shown accordingly.
- a setpoint generator 6 is connected directly to the job computer 2 via an analog data line.
- FIG. 1 Another known prior art is shown in FIG.
- the sensors 5 again shown by way of example as sensors 5.1, 5.2, 5.3, 5.4 and 5.n, are via analog ones
- Valves 3 are assigned and placed there. Such a solution avoids unmanageably large data traffic on bus 1, but causes an extraordinarily large amount of wiring. The risk of wiring errors is also considerable, which leads to great effort during commissioning. Another risk is that the data lines leading to the sensors 5 can be influenced by electromagnetic interference fields, which also adversely affects the safety of the device.
- valve 3 shows an exemplary embodiment of the solution according to the invention.
- the valve 3 is shown here by its hydraulic symbol.
- Bus 1 to which job computer 2 and valve 3 are connected, is also shown.
- the valve 3 is not connected directly to the bus interface 4, but to a control and regulating element 10, which is equipped with the bus interface 4.
- the control and regulating element 10 has a microcontroller 11 which is connected to the bus interface 4.
- the control and regulating element 10 has at least one analog-digital converter 12, to which the sensor 5 of a consumer (not shown) is connected on the one hand and which is connected to the microcontroller 11 on the other hand.
- Control lines 13 lead from the microcontroller 11 to hydraulic drives 14 of the valve 3.
- the consumer can be, for example, a drive cylinder or a hydraulic motor, which is connected to working ports A and B of valve 3 in a known manner.
- the sensor 5 is assigned to the consumer. If the consumer is a hydraulic motor, the sensor 5 detects its speed, for example. If the consumer is a drive cylinder, the sensor 5 detects its position, for example. Depending on the application, the sensor 5 can also detect a pressure, a temperature or a flow rate, which are assigned to the condition or the effect of the consumer.
- the control and regulating element 10 can also have two or more analog-to-digital converters 12 if a plurality of sensors 5 are assigned to the consumer.
- valve 3 The hydraulic symbol of the valve 3 shows that this is a directional control valve that is regularly connected to a tank 15 and a pump 16. - 5 -
- an autonomous control and regulating element 10 with the microcontroller 11 is arranged according to the invention, which processes the signal of the analog sensor 5.
- this solution according to the invention has the advantage that the amount of data on the bus 1 is very much smaller because the signals from the sensor 5 do not load the bus 1.
- a second bus system according to DE-Al -199 53 189 is therefore not necessary, which brings considerable cost advantages.
- the sensor 5 therefore also does not require a bus interface 4, which has considerable cost advantages.
- It is extremely important that the job computer 2 is also significantly relieved by the solution according to the invention because it does not have to process the signals from the sensors 5 at all, because these signals are processed within the control element 10 by the microcontroller 11.
- the job computer 2 therefore also does not send any control commands for the valve 3 via the bus 1, which additionally significantly reduces the bus load.
- control element 10 Because the sensor 5 is connected directly to the control element 10, the control element 10 with the microcontroller 11 can autonomously control and regulate the valve 3 on the basis of the signals from the sensor 5.
- the control algorithm is therefore implied in the microcontroller 11.
- the effect of the job computer 2 is thus limited to transmitting the target values for the consumer as control variables to the control and regulating element 10 via the bus 1.
- each valve 3 is autonomously controlled or regulated by the associated control element 10, the job computer 2 is relieved and the data traffic on the bus 1 is minimized. This is particularly advantageous for time-critical controls in the safety-relevant area.
- the signal of the sensor 5 is processed in the control and regulating element 10 instead of in the job computer 2, the control or regulation is considerably faster because the multiple signal conversion in bus interfaces 4 is omitted. There are no delays due to heavy traffic on bus 1.
- control element 10 is arranged directly on the associated valve 3.
- the control lines 13 are then very short, so that the risk of electromagnetic interference is very small, which increases safety.
- valve 4 shows a schematic view of three valves 3.
- Each of the valves 3 has a plug-in unit 20, which advantageously consists of two identical plug-in connection configurations 21.
- Each of these two plug-in connection configurations 21 advantageously has six contacts 22, two of which serve to connect to bus 1, and two further form the power supply with connections + UB and GND, while two are provided for connection to sensor 5.
- the senor 5 is a two-wire sensor, which can thus be connected to two contacts 22.
- a sensor 5 can also be connected to ground GND on one side, so that a single contact 22 is sufficient for the connection to the plug connection configuration 21.
- two sensors 5 designed as single-conductor sensors can be connected to one of the plug-in connection configurations 21. Because the plug-in unit 20 has two identical plug-in configuration 21, up to four sensors 5 can be connected to a valve 3, which is sufficient for all conceivable applications.
- valves 3 In one of the valves 3 shown, namely the one shown on the far right, a further advantageous embodiment is shown.
- an analog encoder 24 can be connected to two contacts 22 of the one plug-in connection configurations 21 of the plug-in unit 20. This makes it possible, for example, to control a valve 3 directly from this transmitter 24.
- FIG. 5 shows a top view of the plug-in unit 20. As already mentioned, it consists of two identical plug connection configurations 21 with six contacts 22 each. In the plug connection configuration 21 shown on the right, they are - 7 -
- Contacts 22 differed in 22.1, 22.2, 22.3, 22.4, 22.5 and 22.6 in order to differentiate the meaning of the individual contacts 22. This applies in the same way to the plug connection configuration 21 shown on the left.
- Contact 22.1 carries, for example, the operating voltage + U B
- contact 22.2 carries the reference ground GND. The two contacts 22.1 and 22.2 thus together form the power supply.
- Contacts 22.3 and 22.4 are those contacts to which the two data lines of bus 1 can be connected.
- the contacts 22.5 and 22.6 are used to connect analog sensors 5 or the analog transmitter 24. What can be connected to the contacts 22.5 and 22.6 of the two plug connection configurations 21 is determined by the configuration.
- the assignment of the contacts 22.1 to 22.6 is the same in both plug-in connection configurations 21, but it can be determined by the configuration whether on the contacts 22.5 and 22.6 a sensor 5 designed as a two-wire sensor or two sensors 5 or two designed as single-wire sensors Encoder 24 should be connectable.
- the microcontroller 11 By programming the microcontroller 11 it can also be determined how the signals in the microcontroller 11 are to be processed at the contacts 22.5 and 22.6 of the two plug connection configurations 21. It is thus possible to determine by programming whether the actual values of a signal originating from a sensor 5 or setpoint values originating from an encoder 24. At the same time, it is also programmable whether one of the values should take precedence over another value, which is important, for example, when two sensors 5 are connected. As an alternative to such a determination of a priority, it is also possible to link the signals of two sensors 5 to one another, for example by forming a sum or difference.
- microcontroller 11 By programming the microcontroller 11 it is also possible to determine whether the signal arriving via the bus 1 from an encoder acting on the job computer 2 (FIG. 3) should have priority over an encoder 24 connected to one of the plug connection configurations 21 or vice versa.
- the programming of the microcontroller 11 makes it possible to determine whether or not the signals of an encoder 24 connected to one of the plug-in connection configurations 21 and a sensor 5 are to be transmitted to the job computer 2 via the bus 1. This makes it possible for the job computer 2 to do this - 8th -
- each valve 3 By equipping each valve 3 with a microcontroller 11, which also influences the data traffic via the bus 1, it is possible to optimally adapt the individual valves 3 to any control task.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Control By Computers (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/527,726 US20060162327A1 (en) | 2002-10-07 | 2003-08-22 | Regulating device for a hydraulic system |
AU2003253219A AU2003253219A1 (en) | 2002-10-07 | 2003-08-22 | Regulating device for a hydraulic system |
EP03798978A EP1549857A1 (de) | 2002-10-07 | 2003-08-22 | Regelvorrichtung für ein hydraulisches system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH16712002 | 2002-10-07 | ||
CH20021671/02 | 2002-10-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004031593A1 true WO2004031593A1 (de) | 2004-04-15 |
Family
ID=32046633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2003/003780 WO2004031593A1 (de) | 2002-10-07 | 2003-08-22 | Regelvorrichtung für ein hydraulisches system |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060162327A1 (de) |
EP (1) | EP1549857A1 (de) |
AU (1) | AU2003253219A1 (de) |
WO (1) | WO2004031593A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006008509A1 (en) * | 2004-07-16 | 2006-01-26 | Norgren Limited | Fluid flow control valves |
WO2006105749A1 (de) * | 2005-04-07 | 2006-10-12 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Elektrohydraulische steuereinrichtung |
AT520167A1 (de) * | 2017-07-12 | 2019-01-15 | Engel Austria Gmbh | Hydrauliksystem für eine Formgebungsmaschine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29717042U1 (de) * | 1997-09-24 | 1997-11-06 | Kuhnke Gmbh Kg H | Einheit zum Erfassen von Signalen |
WO2001018763A2 (de) | 1999-09-07 | 2001-03-15 | Festo Ag & Co. | Verfahren und vorrichtung zur übertragung von steuer- und/oder sensorsignalen |
DE19953189A1 (de) | 1999-11-05 | 2001-05-10 | Bosch Gmbh Robert | Regelanordnung für ein hydraulisches oder pneumatisches System |
DE10012405A1 (de) * | 2000-03-15 | 2001-09-20 | Mannesmann Rexroth Ag | Einrichtung zur Steuerung eines hydraulischen Aktuators |
WO2001077534A1 (de) | 2000-04-06 | 2001-10-18 | Festo Ag & Co | Ventilanordnung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE200352T1 (de) * | 1985-03-25 | 1987-04-30 | British Aerospace Plc, London, Gb | Steuerungssystem mit rechner. |
US4811561A (en) * | 1986-04-08 | 1989-03-14 | Vickers, Incorporated | Power transmission |
US6310559B1 (en) * | 1998-11-18 | 2001-10-30 | Schlumberger Technology Corp. | Monitoring performance of downhole equipment |
-
2003
- 2003-08-22 EP EP03798978A patent/EP1549857A1/de not_active Withdrawn
- 2003-08-22 WO PCT/IB2003/003780 patent/WO2004031593A1/de not_active Application Discontinuation
- 2003-08-22 AU AU2003253219A patent/AU2003253219A1/en not_active Abandoned
- 2003-08-22 US US10/527,726 patent/US20060162327A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29717042U1 (de) * | 1997-09-24 | 1997-11-06 | Kuhnke Gmbh Kg H | Einheit zum Erfassen von Signalen |
WO2001018763A2 (de) | 1999-09-07 | 2001-03-15 | Festo Ag & Co. | Verfahren und vorrichtung zur übertragung von steuer- und/oder sensorsignalen |
DE19953189A1 (de) | 1999-11-05 | 2001-05-10 | Bosch Gmbh Robert | Regelanordnung für ein hydraulisches oder pneumatisches System |
DE10012405A1 (de) * | 2000-03-15 | 2001-09-20 | Mannesmann Rexroth Ag | Einrichtung zur Steuerung eines hydraulischen Aktuators |
WO2001077534A1 (de) | 2000-04-06 | 2001-10-18 | Festo Ag & Co | Ventilanordnung |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006008509A1 (en) * | 2004-07-16 | 2006-01-26 | Norgren Limited | Fluid flow control valves |
WO2006105749A1 (de) * | 2005-04-07 | 2006-10-12 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Elektrohydraulische steuereinrichtung |
AT520167A1 (de) * | 2017-07-12 | 2019-01-15 | Engel Austria Gmbh | Hydrauliksystem für eine Formgebungsmaschine |
DE102018116234A1 (de) | 2017-07-12 | 2019-01-17 | Engel Austria Gmbh | Hydrauliksystem für eine Formgebungsmaschine |
AT520167B1 (de) * | 2017-07-12 | 2019-05-15 | Engel Austria Gmbh | Hydrauliksystem für eine Formgebungsmaschine |
Also Published As
Publication number | Publication date |
---|---|
EP1549857A1 (de) | 2005-07-06 |
AU2003253219A1 (en) | 2004-04-23 |
US20060162327A1 (en) | 2006-07-27 |
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