EP4426637A1 - Verfahren zum erkennen einer feststecksituation in einer aufzugsanlage, steuervorrichtung für eine aufzugsanlage, aufzugsanlage, computerprogramm und computerlesbares medium - Google Patents
Verfahren zum erkennen einer feststecksituation in einer aufzugsanlage, steuervorrichtung für eine aufzugsanlage, aufzugsanlage, computerprogramm und computerlesbares mediumInfo
- Publication number
- EP4426637A1 EP4426637A1 EP22813218.9A EP22813218A EP4426637A1 EP 4426637 A1 EP4426637 A1 EP 4426637A1 EP 22813218 A EP22813218 A EP 22813218A EP 4426637 A1 EP4426637 A1 EP 4426637A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ref
- car
- torque
- pid
- counterweight
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3476—Load weighing or car passenger counting devices
Definitions
- the present invention relates to a method for detecting a stuck situation in an elevator installation. Furthermore, the invention relates to a control device for the elevator installation, a computer program and a computer-readable medium for executing such a method. Furthermore, the invention relates to an elevator installation that is equipped with such a control device.
- FIG. 1 shows a typical elevator system 20, such as a passenger or freight elevator.
- Such an elevator installation 20 generally comprises an elevator shaft 22, a car 24, a counterweight 26, an electric motor 30, which has a traction sheave 32, suspension means 28, and a brake 34, which is located on the axle of the electric motor 34 or on the car can be located.
- the support means 28 can have, for example, one or more ropes, straps or belts.
- the suspension element 28 is used in the singular below. However, it should be noted that this does not rule out the presence of two or more suspension elements 28 .
- the elevator car 24 is arranged in the elevator shaft 22 so that it can be displaced vertically.
- the counterweight 26 is connected to the elevator car 24 via the suspension element 28 .
- the traction sheave 32 can be rotated by means of the electric motor 30 .
- the suspension means 28 runs over the traction sheave 32 and optionally over a deflection pulley 33 and can be moved by means of the traction sheave 32, so that the elevator car 24 and the counterweight 26 can be vertically displaced by operating the electric motor 30 in cooperation with the suspension means 28.
- the brake 34 enables the car 24 to be braked and/or locked. Alternatively or additionally, a further brake for braking and/or locking the counterweight 26 can be arranged.
- a controller 40 is communicatively coupled to the electric motor 30 and/or the brake 34 to control the electric motor 30 and/or the brake 34 .
- a load 46 can be introduced into or removed from the elevator car 24 via a first access 36 on a first floor. Via a second access 38 on a second floor above the first floor, the load 46 in be introduced into or removed from the elevator car 24 .
- the load 46 can stand in the car 24 on a floor 44 of the car 24 , a weight sensor 42 for detecting a weight of the load 46 being able to be arranged on the floor 44 .
- the load 46 can be transported by the car 24 from the first floor to the second floor or from the second floor to the first floor. Further floors and corresponding entrances (not shown) can also be present, which can be approached by means of the elevator car 24 .
- a first sticking situation relates to a dynamic sticking of the car 24.
- the car 24 first moves and then gets stuck.
- a second sticking situation relates to a statistical sticking of the car 24.
- the car 24 becomes stuck before it can be moved.
- a third sticking situation relates to a dynamic sticking of the counterweight 26.
- the counterweight 26 first moves and then gets stuck.
- a fourth sticking situation relates to a statistical sticking of the counterweight 26.
- the counterweight 26 becomes stuck before it can be moved.
- the counterweight 26 is initially raised further due to the friction between the suspension element 28 and the traction sheave 32 . As soon as this friction is no longer sufficient to further raise the counterweight 26, the counterweight 26 falls so low that the suspension means 28 is tensioned again. Large forces can be transmitted to the support means 28 and via the support means 28 to the elevator car 24, which can damage or injure them and/or loads, for example people, in the elevator car 24.
- the elevator car 24 is initially raised further due to the friction between the suspension element 28 and the traction sheave 32 . As soon as this friction is no longer sufficient to raise the elevator car 24 further, the elevator car 24 falls so low that the suspension element 28 is tensioned again. Large forces can be transmitted to the suspension element 28 and via the suspension element 28 to the counterweight 26 and damage them. In addition, due to the falling of the car 24, loads, for example people, in the car 24 can be damaged or injured.
- a first aspect of the invention relates to a method for detecting a stuck situation in an elevator installation.
- the elevator system has an elevator shaft, a car that is arranged in the elevator shaft, a counterweight that is coupled to the car via a suspension element, an electric motor that has a traction sheave that can be rotated by means of the electric motor, over which the suspension element runs and by means of which the support means can be moved, so that the elevator car and the counterweight can be displaced vertically by operating the electric motor, and a brake, by means of which the elevator car and/or the counterweight can be braked and/or locked.
- the method includes: receiving a load signal representative of a weight of a load that is in the car and that is to be transported by the car; determining a pre-torque based on the load signal; receiving a speed signal representative of an actual speed of the car; Monitoring a correction torque over a predetermined monitoring period, the correction torque being determined as a function of the speed signal and a predetermined reference speed such that the actual speed of the elevator car approaches the reference speed; detecting the stuck situation where the car or counterweight is stuck in the hoistway when the monitored correction torque meets at least one predetermined criterion; and performing a predetermined safety measure upon detection of the stuck situation.
- the method can be executed automatically by a processor of the control device of the elevator system, for example.
- the method described here and below in particular the monitoring of the corrective torque and the detection of the stuck situation when the monitored corrective torque meets the specified criterion, enables reliable and/or rapid detection of all possible sticking situations and can be easily and/or with little effort converted into a Control device for driving the electric motor of the elevator system can be implemented.
- the method can be implemented in a separate electronic safety device, which can be arranged in addition to and/or independently of the control device of the elevator installation.
- the load signal may be generated by a sensor, such as the weight sensor 42 in the floor 44 of the car 24, and received by the controller, such as the controller 40.
- the load signal may be obtained by determining a difference between a weight suspended from a side of the traction sheave from which the counterweight is suspended and a weight suspended from a side of the traction sheave from which the car is suspended. Since the weight of the car, the weight of the counterweight, the position of the car and a specific weight of the suspension means are known, this difference is representative of the weight of the load and can be encoded in the load signal.
- the speed signal can be generated by a speed sensor, e.g., an encoder, which, for example, comprises a magnet and a magnetic sensor and which detects a speed of the electric motor or the traction sheave, and can be received by the control device.
- a speed sensor e.g., an encoder, which, for example, comprises a magnet and a magnetic sensor and which detects a speed of the electric motor or the traction sheave, and can be received by the control device.
- the reference speed can be determined and/or specified by the control device, it being assumed in the following for a simplified explanation that the reference speed is specified by the control device.
- the aforementioned stuck situations can be subdivided into different stuck cases, a distinction being made in the different stuck cases as to whether there is a load in the elevator car.
- Figure 2 shows eight different sticking events, each falling under one of the above sticking situations.
- Figure 2 shows four different cases of jamming 1 to 4 with an empty car 24 and the four different cases of jamming 5 to 8 with the load 46 loaded car 24.
- a distinction is made as to the direction in which the traction sheave 32 rotates, which over the arrows drawn in on the traction sheaves 32 indicate a direction of rotation of the traction sheave 32 (counterclockwise in cases of jamming 1, 2, 5 and 6; clockwise in cases of jamming 3, 4, 7 and 8).
- a distinction is made as to whether the car 24 (in the case of jamming 1, 3, 5 and 7) or the counterweight 26 (in the jamming cases 2, 4, 6 and 8) remain stuck.
- the car 24 is to be moved down but gets stuck. If the traction sheave 32 is rotated further, the counterweight 26 can be raised further, the suspension element 28 can lose tension on the car 24 side and at a later point in time the counterweight 26 can fall down into the suspension element 28 in an uncontrolled manner.
- a first motor axle torque TM applied by the electric motor 30 to lower the car 24 is equal to a negative second torque TME, the negative plant torque.
- the first torque TM is much less than the negative second torque TME because the electric motor 30 must now continue to lift the counterweight 26 without assisting the car 24 weight.
- the application torque is the maximum torque required by the system when driving at a constant speed. This is the case when the cabin is full or, alternatively, when the cabin is empty.
- the elevator car 24 In case of sticking 2, the elevator car 24 is to be moved downwards, but the counterweight 26 remains stuck. The support means 28 cannot be moved any further, which is why the elevator car 24 cannot be moved further down.
- the first torque TM is equal to the negative second torque TME. After being stuck, the first torque TM is much smaller than the negative second torque TME as the electric motor 30 tries to lift the stuck counterweight 26 .
- the car 24 In the stuck case 3, the car 24 is about to move up but gets stuck.
- the support means 28 cannot be moved further, which is why the counterweight 26 cannot be moved further down either.
- the first torque TM is equal to the negative second torque TME. After being stuck, the first torque TM is much greater than the positive second torque TME as the electric motor 30 attempts to lift the stuck car 24 .
- the elevator car 24 In the stuck case 4, the elevator car 24 is to be moved upwards, but the counterweight 26 remains stuck. If the traction sheave 32 is rotated further, the elevator car 24 can be raised further, the support means 28 can lose tension on the side of the counterweight 26 and at a later point in time the elevator car 24 can fall down into the support means 28 in an uncontrolled manner.
- the first torque TM before sticking, the first torque TM is equal to the negative second torque TME. After being stuck, the first torque TM is much greater than the positive second torque TME because the electric motor 30 must now continue to raise the car 24 without the assistance of the counterweight 26 .
- the elevator car 24 with the load 46 is to be moved downwards, but remains stuck. If the traction sheave 32 is rotated further, the counterweight 26 can be raised further, the suspension element 28 can lose tension on the car 24 side and at a later point in time the counterweight 26 can fall down into the suspension element 28 in an uncontrolled manner.
- the first torque TM is equal to the positive second torque TME. After being stuck, the first torque TM is much less than the negative second torque TME because the electric motor 30 must now continue to lift the counterweight 26 without assisting the weight of the car 24 and load 46 .
- the elevator car 24 with the load 46 is to be moved downwards, but the counterweight 26 remains stuck.
- the support means 28 cannot be moved any further, which is why the elevator car 24 cannot be moved further down.
- the first torque TM is equal to the positive second torque TME.
- the first torque TM is much smaller than the negative second torque TME because the electric motor 30 tries to lift the blocked counterweight 26 .
- the elevator car 24 is to be moved upwards with the load 46, but remains stuck.
- the support means 28 cannot be moved further, which is why the counterweight 26 cannot be moved further down either.
- the first torque TM is equal to the positive second torque TME.
- the first torque TM is much greater than the positive second torque TME as the electric motor 30 attempts to lift the stuck car 24 and load 46 .
- the elevator car 24 is to be moved upwards with the load 46, but the counterweight 26 remains stuck. If the traction sheave 32 is rotated further, the elevator car 24 can be raised further, the support means 28 can lose tension on the side of the counterweight 26 and at a later point in time the elevator car 24 can fall down into the support means 28 in an uncontrolled manner.
- the first torque TM is equal to the positive second torque TME. After being stuck, the first torque TM is much greater than the positive second torque TME because the electric motor 30 must now continue to lift the car 24 and load 46 without the assistance of the counterweight 26 .
- a second aspect of the invention relates to a control device with a processor configured to carry out the method according to an embodiment of the first aspect of the invention.
- the control device can be part of the elevator installation or part of an independent safety device for the elevator installation, in addition to the normal elevator control.
- the control device can be hardware and/or include software modules.
- the control unit can include a memory and data communication interfaces for data communication with peripheral devices.
- a third aspect of the invention relates to an elevator system, for example a goods or passenger elevator.
- the elevator installation comprises an elevator shaft, a car which is arranged in the elevator shaft, a counterweight which is arranged in the elevator shaft and is coupled to the elevator car via a suspension element, an electric motor which has a traction sheave which can be rotated by means of the electric motor, over which the support means runs and by means of which the support means can be moved, so that the elevator car and the counterweight can be displaced vertically by operating the electric motor, a brake, by means of which the elevator car and/or the counterweight can be braked and/or locked, and a control device according to an embodiment of the second aspect of the invention.
- a fourth aspect of the invention relates to a computer program which comprises instructions which, when the computer program is executed by the processor, cause a processor to carry out the method according to an embodiment of the first aspect of the invention.
- a fifth aspect of the invention relates to a computer-readable medium on which the computer program is stored according to an embodiment of the fourth aspect of the invention.
- the computer-readable medium can be volatile or non-volatile data storage.
- the computer-readable medium can be a hard drive, USB storage device, RAM, ROM, EPROM, or flash memory.
- the computer-readable medium can also be a data communication network such as the Internet or a data cloud (cloud) enabling a download of a program code.
- the invention can also be features of the computer program and/or the computer-readable medium and vice versa.
- a maximum correction torque and a minimum correction torque are determined within a specified period of time, with the specified criterion being met if a difference between the maximum correction torque and the minimum correction torque is greater than a specified threshold value. Determining the difference and comparing the difference to the predetermined threshold makes it easy to identify the stuck situation.
- the period of time during which the minimum and maximum correction torque and the corresponding difference are determined can be referred to as a monitoring period or as a time window, for example. Because monitoring can be continuous, the time window can slide. In this context, the time window can also be referred to as a sliding window or monitoring window.
- a total torque is determined as a function of the pre-torque and the correction torque
- at least one reference current for operating the electric motor is determined as a function of the total torque. Determining the reference current as a function of the pre-torque and the correction torque can easily contribute to the elevator car being moved at the desired speed and/or comfortably, that is to say with little or no jerks.
- the total torque can be the sum of pre-torque and correction torque, for example.
- the pre-torque includes a load torque and an acceleration torque. Determining the pre-torque as a function of the load torque and the acceleration torque can contribute to the elevator car being moved evenly and/or without jerking, in particular when driving off.
- the pre-torque can be the sum of the load torque and the acceleration torque.
- the load torque is determined in such a way that when the brake is released, the elevator car does not move solely on the basis of the load torque determined. If only the load torque were to be applied by the electric motor, the elevator car would not move when the brake was released. This can contribute to the elevator car being moved evenly and/or without jerks, in particular when driving off.
- the load signal is representative of a difference between a weight hanging on a side of the traction sheave from which the counterweight is hanging and a weight hanging on a side of the traction sheave from which the car is hanging.
- the load torque is determined depending on the load signal.
- the load torque can also be determined as a function of a traction sheave diameter, a transmission ratio and a reeving factor (also referred to as rope transfer factor). Since the weight of the car, the weight of the counterweight, the position of the car and a specific weight of the suspension means are known, this difference is representative of the weight of the load and can be encoded in the load signal.
- the acceleration torque is determined in such a way that the elevator car moves with a reference acceleration due to the acceleration torque. It can be assumed here that the acceleration torque is not required to keep the elevator car at its speed, since the load torque is sufficient for this.
- the acceleration torque thus relates exclusively to the proportion of the total torque, in particular the pre-torque, which is required to keep the elevator car in a constant, accelerated state.
- the reference acceleration can be determined and/or specified by the control device.
- a current mass moment of inertia which is representative of the current mass inertia of the elevator system.
- the acceleration torque is determined depending on the current mass moment of inertia and a reference acceleration.
- the acceleration torque can also be determined as a function of the traction sheave diameter, the transmission ratio and the reeving factor.
- the current mass moment of inertia is depends on the loading of the car.
- the loading can be generated by means of a sensor, for example by means of a weight sensor in the floor of the car, and received by the control device.
- the specified safety measure includes stopping the electric motor and/or generating an error message. Stopping the electric motor simply helps to stop the counterweight from raising if the car gets stuck, or to keep the car raising if the counterweight gets stuck. Generating the error message makes it possible to log one or more stuck situations and, if necessary, to be able to conclude that there is a system error.
- the monitoring of the correction torque is started when at least one predefined starting condition is met. This can help prevent safety measures regarding the stuck situation from being triggered in situations in which no stuck situation can occur or in which the occurrence of the stuck situation is not critical.
- the starting condition includes that the corrective torque is determined at least twice in succession and that the corrective torque meets the specified criterion in both determinations.
- the monitoring can be started without delay, but the stuck situation will not be recognized until the predetermined criterion is met for the second time.
- the monitoring can only be started after the specified criterion has been met for the first time.
- the starting conditions may include that the reference speed is not equal to zero.
- the starting conditions can include that after a drive of the elevator car has started, a predefined start-up period has elapsed.
- FIG 1 shows an elevator system according to an embodiment of the invention.
- Fig. 2 shows a table in which different cases of sticking are illustrated.
- FIG. 3 shows a control device according to an embodiment of the invention.
- FIG. 4 shows an example curve of a torque difference between a maximum correction torque and a minimum correction torque.
- FIG. 5 shows a flowchart of a method according to an embodiment of the invention.
- the elevator system 20 has an elevator shaft 22, a car 24, a counterweight 26, an electric motor 30, which has a traction sheave 32, suspension means 28, optionally a deflection roller 33, a brake 34 and a control device 40 for controlling the electric motor 30.
- a load 46 which is to be transported by means of the elevator car 24 .
- a weight sensor 42 for detecting a weight (or difference in weight, also UB) (see FIG. 3) of the load 46 is arranged in a floor 44 of the car 24 .
- FIG. 2 shows the table explained above, in which the different possible cases of sticking are illustrated. 2 shows, among other things, that in all cases of jamming and thus also in all jamming situations that include the cases of jamming, an amount of torque that the electric motor has to apply in order to achieve the desired acceleration and/or speed increases sharply.
- 3 shows a control device 40 according to an exemplary embodiment of the invention. The control device 40 serves to actuate the electric motor 30 depending on the weight of the load 46, a predefined reference acceleration ak_ref and a predefined reference speed vk_ref in such a way that the elevator car 24 moves with the predefined reference acceleration ak_ref and with the predefined reference speed vk_ref.
- control device 40 is used to quickly and reliably detect a stuck situation in which either the car 24 or the counterweight 26 gets stuck in the elevator shaft 22 .
- FIG. 3 only shows the components of the control device 40 that are relevant for executing the method for detecting the stuck situation.
- the control device 40 may include other components, which are not shown in the figures, however, in order not to unnecessarily obscure the subject matter of the present invention.
- the controller 40 includes an acceleration torque determiner 50, a load torque determiner 52, a speed torque determiner 54, a torque limiter 56, a reference current determiner 58, a sliding window determiner 60, and a 62 comparator.
- the acceleration torque determiner 50 determines an acceleration torque TM REF ACCEL as a function of the specified reference acceleration ak_ref and a current mass moment of inertia IA_ACTUAL, which is representative of the current mass moment of inertia of the elevator installation 20 .
- the current mass moment of inertia IA_ACTUAL depends, among other things, on the load 46 which can be determined using the weight sensor 42 in the floor 44 of the driver's cab 24 .
- the acceleration torque determiner 50 determines the acceleration torque TM REF ACCEL in particular in such a way that the elevator car 24 moves with the reference acceleration ak_ref on the basis of the acceleration torque TM REF ACCEL.
- the acceleration torque TM REF ACCEL can be determined using the following formula, for example:
- the current mass moment of inertia IA_ACTUAL can be defined as follows:
- the load torque determiner 52 uses a first load signal to determine a load torque TM REF LOAD such that when the brake 34 is released, the elevator car 24 does not move solely on the basis of the determined load torque TM REF LOAD.
- the load torque TM REF LOAD can be determined using the following formula, for example: with the gravitational constant g.
- the load signal is representative of a difference UB between a weight hanging from a side of the traction sheave 32 from which the counterweight 26 is hanging and a weight hanging from a side of the traction sheave 32 from which the car 24 is hanging.
- the acceleration torque TM REF ACCEL and the load torque TM REF LOAD are added to a pre-torque TM REF FF.
- the speed torque determiner 54 determines a correction torque TM REF PID as a function of the reference speed vk_ref and an actual speed vk_act of the car 24 .
- the speed torque determiner 54 determines the correction torque TM REF PID depending on a difference between the reference speed vk_ref and the actual speed vk_act of the elevator car 24 a correction torque TM REF PID is clearly assigned to the reference speed vk_ref and the actual speed vk act .
- the correction torque TM REF PID is determined in such a way that the car moves at the reference speed vk_ref or at least approaches the reference speed vk_ref.
- the correction torque TM REF PID is added to the pre-torque TM REF FF, resulting in a total torque TM REF SUM.
- Reference currents for controlling the electric motor are generated from the TM_REF_SUM.
- the sliding window determiner 60 determines a maximum correction torque TM REF PID STALLING MAX and a minimum correction torque TM REF PID STALLING MIN within a predetermined period of time, which can be represented, for example, by a sliding window T mO n (see Figure 4), depending on the correction torque TM REF PID .
- a torque difference TM REF PID STALLING between the maximum correction torque TM REF PID STALLING MAX and the minimum correction torque TM REF PID STALLING MIN can be determined.
- the comparator 62 compares the torque differential TM REF PID STALLING to a predetermined threshold TM_CHANGE_LIMIT and outputs a signal representative of the occurrence of a stuck situation when the torque differential TM REF PID STALLING is greater than a predetermined threshold TM CHANGE LIMIT and inputs signal out that for one Normal operation is representative when the torque difference
- FIG. 4 shows the sliding window T mO n which is representative of the time period within which the torque difference
- TM REF PID STALLING MIN is determined. As soon as the torque difference TM REF PID STALLING is greater than the threshold value TM CHANGE LIMIT, it is recognized that the elevator car 24 or the counterweight 26 is stuck and thus that the stuck situation is present.
- FIG. 5 shows a flow chart of a method according to an embodiment of the invention.
- the method is used to reliably and quickly identify the jamming situations described above.
- the method can be processed by the control device 40, for example.
- the load signal is received, which is representative of the weight of the load 46 that is located in the car 24 and that is to be transported by means of the car 24.
- the pre-torque TM REF FF is determined as a function of the load signal, for example as explained with reference to FIG.
- step S6 the speed signal, which is representative of the actual speed vk_act of the car 24, is received.
- a step S8 the correction torque TM REF PID is monitored over a specified monitoring period, the correction torque TM REF PID being determined as a function of the speed signal and the specified reference speed vk_ref so that the actual Speed vk_act of the elevator car 24 approaches the reference speed vk_ref, for example by means of the control loop shown in FIG.
- a step S10 it is checked whether the monitored correction torque TM REF PID meets at least one predetermined criterion.
- the specified criterion can be met, for example, when the torque difference TM REF PID STALLING is greater than the specified threshold value TM CHANGE LIMIT. If the condition of step S10 is met, processing can be continued in step S12. If the condition of step S10 is not met, processing can be continued in step S8.
- step S12 the presence of the stuck situation, in which the car 24 or the counterweight 26 gets stuck in the elevator shaft 22, is recognized.
- a specified security measure can be implemented.
- the elevator car 24 and/or the counterweight 26 can be fixed by means of appropriate brakes, for example by means of the brake 34 .
- the electric motor 30 can be switched off.
- the method can be started when the elevator system 20 is put into operation.
- the method can be started when starting a trip with the elevator car 24 .
- starting the method can be linked to a start condition and can only be started if the city condition is met. This can help to avoid that a jerk phase, in which a jerk is transmitted to the car 24 and which can occur when the car 24 starts moving, is not incorrectly recognized as a stuck situation.
- the start condition can be met, for example, when the reference speed vk_ref is not equal to zero.
- the starting condition can be met when, after starting the journey with the elevator car 24, a predetermined period of time, for example from a few milliseconds to a few seconds, has elapsed.
- the correction torque TM REF PID can be determined before starting the method and the method can only be started when the torque difference TM REF PID STALLING between the maximum correction torque TM REF PID STALLING MAX and the minimum Correction torque TM REF PID STALLING MIN is greater than the threshold value TM_CHANGE_LIMIT within the specified time window.
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Elevator Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21206114 | 2021-11-03 | ||
| PCT/EP2022/080607 WO2023078966A1 (de) | 2021-11-03 | 2022-11-03 | Verfahren zum erkennen einer feststecksituation in einer aufzugsanlage, steuervorrichtung für eine aufzugsanlage, aufzugsanlage, computerprogramm und computerlesbares medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4426637A1 true EP4426637A1 (de) | 2024-09-11 |
| EP4426637B1 EP4426637B1 (de) | 2025-10-15 |
Family
ID=78516569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22813218.9A Active EP4426637B1 (de) | 2021-11-03 | 2022-11-03 | Verfahren zum erkennen einer feststecksituation in einer aufzugsanlage, steuervorrichtung für eine aufzugsanlage, aufzugsanlage, computerprogramm und computerlesbares medium |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250011131A1 (de) |
| EP (1) | EP4426637B1 (de) |
| CN (1) | CN118201864A (de) |
| AU (1) | AU2022381689A1 (de) |
| WO (1) | WO2023078966A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006119787A1 (en) * | 2005-05-09 | 2006-11-16 | Otis Elevator Company | Method for controlling an elevator drive device and related operartion device for an elevator system |
| EP2865629B1 (de) | 2013-10-24 | 2016-11-30 | Kone Corporation | Stockbedingungserfassung |
| EP3705441B1 (de) | 2019-03-05 | 2025-05-07 | KONE Corporation | Verfahren zur steuerung eines aufzugs |
-
2022
- 2022-11-03 EP EP22813218.9A patent/EP4426637B1/de active Active
- 2022-11-03 US US18/704,963 patent/US20250011131A1/en active Pending
- 2022-11-03 CN CN202280073544.3A patent/CN118201864A/zh active Pending
- 2022-11-03 WO PCT/EP2022/080607 patent/WO2023078966A1/de not_active Ceased
- 2022-11-03 AU AU2022381689A patent/AU2022381689A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CN118201864A (zh) | 2024-06-14 |
| WO2023078966A1 (de) | 2023-05-11 |
| AU2022381689A1 (en) | 2024-05-16 |
| US20250011131A1 (en) | 2025-01-09 |
| EP4426637B1 (de) | 2025-10-15 |
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