EP2986502A1 - Optimierung eines antriebssystems mit einem verstellpropeller bei einem wasserfahrzeug während eines stoppmanövers - Google Patents
Optimierung eines antriebssystems mit einem verstellpropeller bei einem wasserfahrzeug während eines stoppmanöversInfo
- Publication number
- EP2986502A1 EP2986502A1 EP14707769.7A EP14707769A EP2986502A1 EP 2986502 A1 EP2986502 A1 EP 2986502A1 EP 14707769 A EP14707769 A EP 14707769A EP 2986502 A1 EP2986502 A1 EP 2986502A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- propeller
- drive system
- speed
- determined
- maneuver
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000005457 optimization Methods 0.000 title description 2
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000004590 computer program Methods 0.000 claims abstract description 10
- 230000002123 temporal effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H25/50—Slowing-down means not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H3/00—Propeller-blade pitch changing
- B63H3/10—Propeller-blade pitch changing characterised by having pitch control conjoint with propulsion plant control
Definitions
- the invention relates to a method of operating a drive system of a vessel at a stop maneuver, wherein the drive system comprises at least one rotary variable pitch propeller, comprising wherein each propeller blades with comparable chenem blade angle and which is driven by means of a Mo ⁇ tors, wherein the motor is a motor torque to the Performing variable pitch, wherein a speed of the watercraft and a propeller speed of the at least one variable pitch propeller are determined. Furthermore, the invention relates to a controller, a watercraft, a computer program and a computer program product for carrying out the method.
- Such a method and such a drive system are used, for example, in watercraft, in which good maneuverability or very different Dau ⁇ er yorken are required, eg ferries, passenger ships, feeders.
- the conventional propeller with fixed pitch propeller blades are rotatably mounted to the hub at the "Controllable pitch propeller", or variable.
- the slope can ( “pitch") steplessly from zero ⁇ shear to maximum thrust in the direction of advance or Reset comparable , wherein the pitch angle or the slope ratio ⁇ nis can also be referred to as a blade angle.
- the machine To accelerate the vessel from standstill, the machine is started at zero thrust and ramped up, for example, to cruise speed. It is not loaded by drive torque when starting. Consequently, the vehicle is not specifically refers to drive if the machine is ge ⁇ starts. A spin of the propeller shaft and the with connected motor by flow (eg of passing ships in the port) is prevented by the zero-thrust propeller. Watercraft with variable pitch propellers usually do not have a reverse gear, at most a reducer in fast-rotating engines. Thus, a substantial disadvantage is omitted in the drive system in comparison with convention ionel ⁇ len propulsion systems. The efficiency is cheaper at different speeds than in the case of a fixed propeller.
- the drive can with the engine running of "forward” are reversed to "to ⁇ back", which is associated with considerable time savings, since the machine rela ⁇ hung instance must not be shut down to minimum speed not stopped. This significantly improves maneuverability.
- the power with which the propeller is driven must either be fed back into the on-board power supply with appropriate power converters or burned out via so-called braking resistors.
- braking resistors In order to ensure the stability of the electrical system and not drive the diesel generators in the reverse power range, therefore, a large structural and logistical effort is operated.
- the regenerative converters are much more expensive than the purely motor-operated design.
- the invention has for its object to provide a method of the type mentioned above, which allows a quick deceleration of the vessel in a simple manner.
- This object is achieved in a method of the type mentioned in the following steps in that a characteristic curve for the vessel is determined in advance, which different initial speeds of Was ⁇ serhuss at the beginning of the stop maneuver with at least je ⁇ Weils a time course of the blade angle and a time profile of the propeller speed linked in such a way that during the stop maneuver according to the characteristic operated drive system results in the shortest possibletechnischge ⁇ laid upstop of the vessel and the propeller speed does not exceed a predetermined, critical speed value, the drive system during the stop maneuver according to the previously determined characteristic is operated.
- controller which has means for carrying out the method according to the invention, wherein the means comprise at least one computer unit and one memory unit, on which the apparatus for the
- a watercraft with at least one drive system and the aforementioned control wherein the drive system comprises at least one rotatable variable pitch propeller which each has propeller blades with adjustable blade angle and which is drivable by means of a motor, wherein by means of the motor a Mo ⁇ Tordusmoment on the variable pitch propeller (1) can be exercised, wherein by means of a respective sensor, at least one speed of the watercraft and a propeller speed of the at least one variable pitch propeller can be determined.
- the speed of the ship is ermit ⁇ telt, whereby the flow velocity of the water relative to the ship or the propeller into account can be considered.
- sensors can be used for this purpose.
- the propeller speed is also determined, for example by means of further sensors, in particular in the form of a transmitter.
- the propeller speed may, for example, via electrical currents, is applied to wel ⁇ chen the motor by the inverter, to be determined.
- the propeller torque of the at least one variable pitch propeller can be determined.
- ver ⁇ turns be that the temporal change in the propeller speed is proportional to the difference between the Motordusmo ⁇ ment and the propeller torque, wherein in a
- the engine torque can be determined based on the torque-generating current supplied to the motor.
- the inventive method is used in watercraft with pitch-adjustable propeller blades and a pitch adjuster for adjusting the pitch of the propeller blades used.
- a controller may be provided which can process the data from sensors and commands to the pitch adjuster, the engine, the inverter and, if appropriate, further ship components and parts of the
- the characteristic according to which the drive system is operated during a stop maneuver can be determined, for example, by means of a calculation or a simulation, which is carried out for a specific vessel or for a particular type of vessel.
- To determine the characteristic curve may be used that act during a Stoppma ⁇ Noevers forces on the vessel, such as the resistance of the hull of the watercraft, due to the advance drive, the resistance of the rudder as well as the thrust of the propeller.
- the resistance of the vessel and the resistance of the rotor can be r
- the blade angle of a positive blade angle so as to of that blade angle is achieved in which the verse ⁇ tellpropeller produces no more feed. Subsequently, the blade angle can be further changed until finally a negative blade angle is reached and a recoil ent ⁇ stands. In particular due to the friction of the water flowing past the hull of the ship, a delay of the ship can be effected overall during this Vorgan ⁇ ges. At the same time, the speed of the variable pitch propeller can be changed. This can be done by specifying a setpoint speed .
- the stopping maneuver results in the shortest possible stopping distance of the watercraft, with the propeller speed not exceeding the specifiable, critical speed value.
- the critical rotational ⁇ number value can be chosen in particular such that gra ⁇ fourende damage to the ship propulsion system can be avoided.
- the Kennli ⁇ never provides to maintain the blade angle initially to "windmilling" to prevent particular.
- the stop maneuver covered by the stop maneuver can provide an advantageous characteristic, in particular at lower initial speeds of the watercraft, of initially increasing the propeller speed, but maximally up to the critical speed value.
- a distance of the vessel is determined to a collision obstacle, wherein the drive system additionally performs an evasive maneuver, if the distance traveled during the stop maneuver of the vessel Aufstoppweg is greater than the Ent ⁇ distance of the vessel to the collision obstacle.
- the collision barrier may act to stationary obstacles such as reefs, port facilities and derglei ⁇ chen, or mobile obstacles such as other vessels.
- the determination of the distance of the watercraft to the collision obstacle can be made in particular optically or by means of radar measurements.
- position data of the obstacle can be supplied to the drive system in order to determine the distance.
- an obstruction path traveled by the collision obstruction during the stop maneuver may be taken into account in determining the distance.
- the obstacles may nisweg an allowable Aufstoppweg the watercraft ver ⁇ greater or smaller, depending on the direction in which the collision obstacle is moving.
- the avoidance maneuver can be optimized, for example, that the drive system current position data of the vessel are accessible.
- possible evasive maneuvers can be checked for feasibility, and finally an evasive maneuver can be selected which is feasible and at the same time ensures a safe distance to the possible collision obstacle.
- FIG. 1 shows a schematic representation of an embodiment of a drive system according to the invention ⁇ ees,
- Figure 1 shows a schematic representation of anwhosbei ⁇ game of a drive system according to the invention.
- An adjustment ⁇ propeller 1 is a reduction gear 4 from a motor n
- variable pitch propeller 1 has propeller blades, which each have an adjustable blade angle 12, which can be changed by an adjustment unit 5.
- the motor 3 is supplied by a converter 2 with power, wherein the inverter receives 2 sets of values with respect to the Mo ⁇ torwindiere 10 from a controller. 6
- the controller 6 is supplied with the actual, measured by an encoder 7 Propel ⁇ lernaviere 11 and the controller 6 is further desired values with respect to the blade angle of 12 integral to the adjustment units. 5
- FIG. 2 shows time profiles of a blade angle 12 according to an exemplary characteristic curve.
- the characteristic was doing, like, determined in advance for the following figures and ensures that a run during a stopping maneuver according to the characteristic drive system of an associated What ⁇ serhuss completed in the shortest possible
- the determined characteristic curve can furthermore take into account that different blade angles 12 are applied during the operation of the watercraft before the stop maneuver. For the sake of simplicity, a corresponding graphical representation is dispensed with.
- FIG. 3 shows time profiles of a propeller speed 11 according to a further exemplary characteristic curve. Shown are different temporal profiles of the propeller speed 11, wherein on the x-axis the time on the y-axis is the Pro ⁇ pellerburniere 11 and on the z-axis of the initial velocity is 17 placed respectively in arbitrary units ⁇ wear.
- the stop maneuver is started, wherein before the start of the stop maneuver different propeller speeds 11 are present.
- the propeller speed 11 is increased rapidly and considerably at the beginning of the stopping maneuver.
- the propeller speed 11 is maintained according to the present characteristic.
- FIG. 4 shows a first example of a time course of a propeller speed 11 according to the characteristic and a speed 13 of a watercraft. Further, a blade angle of 12 and a Momentenbeiwerts 14 are shown in ⁇ play exemplary time profiles, wherein on the ordinate axis of the respective absolute value of said parameter and on the abscissa the time are respectively plotted in arbitrary units.
- a positive moment coefficient 14 means that on the variable pitch propeller 1 a total positive ves torque acts.
- the illustrated curves can in particular differ from the exemplary curves shown in FIGS. 2 and 3.
- a stop maneuver is initiated and the blade angle 12 is reduced and finally changed to negative Win ⁇ angles.
- the propeller speed 11 is increased by the engine speed 10 is increased until a maximum speed is reached.
- the maximum speed can be selected, for example, that the propeller speed 11 a definable critical speed value do not exceed ⁇ tet.
- Moment coefficient 14 decreases abruptly, but remains positive.
- a negative moment coefficient 14 would indicate that a ne ⁇ gatives torque acts on the variable pitch propeller 1, and so ⁇ occurs with "windmilling".
- the erstoff ⁇ te speed drops 13 of the water craft comparatively fast and the moment coefficient 14 decreases after a certain period of time, larger values
- the determined speed 13 is steadily reduced until it finally assumes the value zero and the vessel is at rest, not shown here and here listed reference characters see the other figures.
- FIG. 5 shows a second example of a time profile of a propeller speed 11 according to the characteristic curve and a speed 13 of a watercraft.
- the calculated speed 13 and the Propel ⁇ lernaviere 11 before the start of stopping maneuver are lower.
- the propeller speed becomes 11 solid increases, wherein the blade angle 12 is reversed only gradually. This results in the beginning of the stopping maneuver he ⁇ creased determined speed 13, which is then reduced to zero.
- the torque coefficient 14 always remains positive, so that no "windmilling" occurs.
- FIG. 6 shows a third example of a time profile of a propeller speed 11 according to the characteristic curve and a speed 13 of a watercraft.
- Stoppma ⁇ Noevers the propeller speed 11 remains unchanged, and the blade angle 12 is gradually reversed.
- the torque coefficient 14 remains positive during the entire stop maneuver and the determined speed 13 is lowered continuously until the vessel is at a standstill.
- Figure 7 shows a fourth example of a time course of a propeller speed 11 according to the characteristic and a speed 13 of a watercraft.
- the determined speed 13 and the propeller speed 11 are comparatively large before the start of the stop maneuver.
- the blade angle 12 is reversed comparatively quickly ⁇
- the engine 3 is separated from the inverter 2, so that the propeller speed 11 initially drops rapidly.
- the moment coefficient 14 for a ge ⁇ know time period is negative, occurs "windmilling" effect, so that the propeller speed 11 rises again.
- the moment coefficient 14 again assumes positive values.
- the invention relates to a method for loading ⁇ drive a propulsion system of a watercraft in a stop maneuver, wherein the drive system has at least one rotatable variable pitch propeller, which in each case propeller Having blades with adjustable blade angle and which is driven by a motor, wherein the engine can exert an engine torque on the variable pitch propeller, wherein a speed of the watercraft and a propeller speed of the at least one variable pitch propeller are determined.
- the invention relates to a control system, a watercraft, a computer program and a Computerpro ⁇ program product for performing the method.
- a characteristic curve for the water vehicle is determined, having different initial velocities of the craft at the start of Stoppma ⁇ Noevers with at least a respective time variation of the blade angle and a time course of the propeller speed associated such that the ge ⁇ Gurss during the stopping maneuver the characteristic curve resulting operated driving system in a mög ⁇ lichst short distance traveled Aufstoppweg of the vessel and the propeller speed does not exceed a predetermined critical rotational speed value, wherein the drive system during the Stop maneuver is operated according to the previously determined characteristic.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Stopping Of Electric Motors (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Wind Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013209337.3A DE102013209337A1 (de) | 2013-05-21 | 2013-05-21 | Optimierung eines Antriebssystems mit einem Verstellpropeller bei einem Wasserfahrzeug während eines Stoppmanövers |
PCT/EP2014/054114 WO2014187584A1 (de) | 2013-05-21 | 2014-03-04 | Optimierung eines antriebssystems mit einem verstellpropeller bei einem wasserfahrzeug während eines stoppmanövers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2986502A1 true EP2986502A1 (de) | 2016-02-24 |
EP2986502B1 EP2986502B1 (de) | 2018-10-03 |
Family
ID=50193506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14707769.7A Active EP2986502B1 (de) | 2013-05-21 | 2014-03-04 | Optimierung eines antriebssystems mit einem verstellpropeller bei einem wasserfahrzeug während eines stoppmanövers |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2986502B1 (de) |
KR (1) | KR101825282B1 (de) |
AU (1) | AU2014270720B2 (de) |
DE (1) | DE102013209337A1 (de) |
DK (1) | DK2986502T3 (de) |
ES (1) | ES2704097T3 (de) |
WO (1) | WO2014187584A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10287006B1 (en) * | 2015-12-18 | 2019-05-14 | Amazon Technologies, Inc. | Adjustable propeller blades for sound control |
KR20180016810A (ko) * | 2016-08-08 | 2018-02-20 | 월드콥터코리아 주식회사 | 에어보트용 가변피치 프로펠러 자동제어 장치 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4611209A (en) * | 1979-10-12 | 1986-09-09 | Lemelson Jerome H | Navigation warning system and method |
JP2702558B2 (ja) * | 1989-08-09 | 1998-01-21 | 株式会社新潟鐵工所 | 船舶の衝突防止装置 |
WO2005044659A1 (en) * | 2003-10-28 | 2005-05-19 | Aimbridge Pty Ltd | Control method and control system for a controllable pitch marine propeller |
US7131385B1 (en) * | 2005-10-14 | 2006-11-07 | Brunswick Corporation | Method for braking a vessel with two marine propulsion devices |
-
2013
- 2013-05-21 DE DE102013209337.3A patent/DE102013209337A1/de not_active Ceased
-
2014
- 2014-03-04 DK DK14707769.7T patent/DK2986502T3/en active
- 2014-03-04 EP EP14707769.7A patent/EP2986502B1/de active Active
- 2014-03-04 ES ES14707769T patent/ES2704097T3/es active Active
- 2014-03-04 AU AU2014270720A patent/AU2014270720B2/en active Active
- 2014-03-04 KR KR1020157033707A patent/KR101825282B1/ko active IP Right Grant
- 2014-03-04 WO PCT/EP2014/054114 patent/WO2014187584A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2014187584A1 (de) | 2014-11-27 |
KR101825282B1 (ko) | 2018-03-14 |
DE102013209337A1 (de) | 2014-11-27 |
AU2014270720A1 (en) | 2015-11-19 |
DK2986502T3 (en) | 2019-01-21 |
KR20160004350A (ko) | 2016-01-12 |
EP2986502B1 (de) | 2018-10-03 |
AU2014270720B2 (en) | 2016-09-22 |
ES2704097T3 (es) | 2019-03-14 |
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