Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
  • B61L17/00—Switching systems for classification yards
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61J—SHIFTING OR SHUNTING OF RAIL VEHICLES
  • B61J3/00—Shunting or short-distance haulage devices; Similar devices for hauling trains on steep gradients or as starting aids; Car propelling devices therefor
  • B61J3/02—Gravity shunting humps

Definitions

• the invention is in the field of maneuvering technology and relates to a method for forming a substitute value for a run-determining property of wagons on a maneuvering system, in which, based on at least one archived long-term mean value for the run-determining property, evaluating measured values obtained from current wagon runs a tracked long-term average is generated.
• Original train assemblies are broken down on maneuvering or drainage systems, for example according to a dismantling list, and put together in accordance with the stipulation of individual wagons or wagon groups in different direction tracks to form new wagon groups or trains.
• mastering the running behavior of the freely running wagons and, as far as possible, dome-ready running with a permissible run-up speed are of particular importance.
• the running characteristics of the wagon or group of wagons running must be forecast as realistically as possible.
• the object of the invention is therefore to create a method for forming a substitute value for a running-determining property of wagons on a maneuvering system which automatically avoids an undesired long-term influence of long-term mean values which are tracked temporarily as a result of changed environmental conditions.
• the tracked long-term mean value can in principle be generated in a known manner by the fact that the current measured values in relation to the number of mean values forming
• the current measured values are included in the tracked long-term mean value with a stronger weighting (corresponding to their ratio to the total number of total values). This can take place, for example, in that the deviation of a number of current measured values from the tracked long-term mean value is determined and as Correction value is added to the long-term mean for tracking.
• the determination of the rolling resistance is known per se and is described, for example, in DE-OS 22 46 306 and DE-Al 42 14 541. Experience has shown that the running characteristics of wagons are significantly dependent on the temperature. It is therefore known, for example from DE-A1 42 14 541, to determine archived long-term mean values or start values as a function of the temperature for a running-determining property (eg for the rolling resistance of a car).
• a running-determining property eg for the rolling resistance of a car.
• an advantageous development of the method according to the invention provides that long-term mean values for different temperatures are determined and archived and that the archived long-term mean value corresponding to the prevailing temperature is provided at the start of the process.
• a particularly practical ratio of the proportions of the archived and updated long-term mean value is preferably reflected in the formation of a replacement value according to the method according to the invention in that the proportion of the updated long-term average value remains constant for a first period and down to zero during a subsequent second period is measured in a decreasing manner, with the proportion of the archived long-term mean being measured accordingly.
• the proportion of the long-term mean values is preferably provided in accordance with the current temperature.
• a particularly preferred application of the method according to the invention is the updating of substitute values for the rolling resistance force (FACHS) of a rolling axis.
• the rolling resistance is largely independent of the load and therefore characteristic of the car.
• Under the rolling resistance is the product of the rolling resistance (wr) with the total weight (Gges) normalized to the number (n) of axles per wagon or group of wagons according to the equation
• FIG. 1 shows schematically a drainage system
• FIG. 2 shows the essential steps of the method according to the invention
• FIG. 3 shows the formation of substitute values.
• a maneuvering system 1 operated at the temperature T1 comprises a drain mountain 2 and a drain area 3 directed downwards, which branches into direction tracks RG1, RG2, RG3 and RG4.
• a train or a carriage group 10 is pushed uphill by a push-off locomotive 11 in such a way that a large number of individual carriages Wi (carriages W1, W2, W17, W18, W19 and W20 are explicitly shown) or carriage groups successively enter the free run.
• carriages Wi carriages W1, W2, W17, W18, W19 and W20 are explicitly shown
• the carriage W1 is in free running in the valley area 3 and passes through a detection zone EKZ in which, for example, the axis configuration (number, arrangement, distribution of the axes) is determined and the running times of the carriage axes be measured in a measuring section.
• a detection zone EKZ in which, for example, the axis configuration (number, arrangement, distribution of the axes) is determined and the running times of the carriage axes be measured in a measuring section.
• Equation (1) the rolling resistance force of a rolling axis FACHS can be determined.
• This running property of each car Wi is represented by a measured value MWi.
• the measured values MWi serve in a known manner to control a valley brake TB which follows in the downward direction and which permits a predetermined runout speed depending on the directional track provided.
• Directional track brakes RB1 to RB4 are controlled in accordance with the measured values MWi in order to achieve a dome-ready run-in with the highest possible track filling.
• the measured values MWi assigned to the running carriage Wi are serially written into a FIFO memory SP with 20 memory cells, so that the last 20 measured values MWI to MW20 are present in the memory SP.
• archived long-term mean values ALM1 to ALM3 are used. These have been determined and stored in advance (OFF-Line) for different temperatures T1, T2, T3 for each class.
• the archived long-term mean value ALM1 is used (arrow PO), since the temperature T1 (FIG. 1) prevails on the maneuvering system.
• Long-term mean values ALM1 to ALM3 serve to form replacement values EW and are now updated taking into account the current processes and their measured values MWi.
• each measured value MWi is provided with a time stamp which indicates the time ti of the measured value recording.
• the last 20 measured values MW20 to MWI are tracked with the - i.e. at the start of the process e.g. with the archived long-term mean value ALM1 or a long-term mean value NLM1 which has been tracked up to now.
• Long-term mean values for the temperatures T2, T3 are tracked accordingly
• each deviation ⁇ l to ⁇ 20 (generally ⁇ i) determined in this way can be checked in a first comparison VGL1 to determine whether it is within a tolerance range. empire lies.
• VGL1 the amount of the deviation ⁇ i with respect to a first threshold value Sl is determined. If the amount is smaller (N) than the threshold value S1, the respective deviation ⁇ i is taken into account in a subsequent averaging MWB.
• the mean deviation value AWM can be added to the previous long-term mean value NLM1 with a weighting factor ⁇ , which makes the short-term influence of the measured value deviations adjustable.
• Activation of the mean deviation value AWM leads to an abrupt and immediate tracking (adaptation) of the tracked long-term mean value NLM1.
• the oldest measured value MWI can be read out of the memory SP due to the running of a further carriage (not shown) and, as indicated by the arrow denoted by P2, added to the long-term mean value ⁇ LM1 for tracking.
• the measured value MWI would go according to its weighting, which results from the total number of values taken into account in the classic
• the measured value MW2 etc. would be included in the long-term mean value if further new measured values were written into the memory SP.
• the measured value MWI, MW2 etc. can preferably remain completely without influence if, based on its time pels tl, t2 exceeding a maximum age of z. B. 12 hours is recognized.
• the substitute value EW is formed in part from the archived long-term average ALM1 and the updated long-term average NLMl.
• the proportion AN of the updated long-term mean value NLM1 is measured according to FIG. 3 in a first period of 3 hours and is 60%. Accordingly, the substitute value EW is formed 60% from the updated long-term mean NLM1 and 40% from the archived long-term mean ALMl.
• the proportion of AN is therefore measured at 40%.
• the second substitute value EW ' is therefore only 40% determined by the tracked long-term mean NLMl and 60% by the archived long-term mean ALMl. Due to the decrease in the proportion AN of the tracked long-term mean value depending on its age in the formation of the replacement value, which is only shown graphically in FIG. 3, the one previously determined in OFF-Line mode dominates again after a long break in operation empirically supported archived long-term mean. This advantageously avoids the fact that, in the meantime, the ambient conditions change to the other extreme (eg dryness after heavy rain), at least initially, inadmissibly strongly deviating from reality, as the one previously represented by the measured values MWi sets values.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Management, Administration, Business Operations System, And Electronic Commerce (AREA)
• Feedback Control In General (AREA)
• Warehouses Or Storage Devices (AREA)
• Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
• Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
• Image Analysis (AREA)

Priority Applications (1)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7755855

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Family Cites Families (5)

• 1995
  • 1995-02-24 DE DE19507932A patent/DE19507932C1/de not_active Expired - Fee Related
• 1996
  • 1996-02-16 AT AT96903891T patent/ATE187132T1/de not_active IP Right Cessation
  • 1996-02-16 EP EP96903891A patent/EP0810942B1/fr not_active Expired - Lifetime
  • 1996-02-16 DE DE59603785T patent/DE59603785D1/de not_active Expired - Fee Related
  • 1996-02-16 WO PCT/DE1996/000292 patent/WO1996026094A1/fr active IP Right Grant

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events