JP2012136350A - Apparatus and method for adjusting load compensation value for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily execute readjustment processing for a proper load compensation value.SOLUTION: The apparatus for adjusting the load compensation value for an elevator includes: a speed control part 23 for outputting a speed command signal; and a load-compensation-value correction part 15 for combining the preset proper load compensation value corresponding with a car-load detection signal detected by a load detector 16 installed in a car 13 into the speed command signal to become a torque command value to be sent to a drive part for lifting/lowering of the car. The load-compensation-value correction part 15 includes: a N.L (Non-Load) load-recognition processing part 40 which determines whether a current proper load compensation value output according to a car load detection signal in N.L from the load detector during long use deviates beyond a predetermined load detection deviation level from the original proper load compensation value, and requires readjustment; and an arbitrary load-readjustment processing part 50 which, when it is determined that the readjustment is necessary, returns a straight line of the current proper load compensation value to a straight line of the original proper load compensation value.

Description

  Embodiments described herein relate generally to an elevator load compensation value adjusting device and a load compensation value adjusting method thereof.

  Generally, an elevator is required to always run smoothly without being affected by fluctuations in the load in the car and to stop accurately when landing on each floor. In particular, to prevent the elevator from causing unpleasant vibrations at the start or traveling in the direction opposite to the traveling direction, a load detector is installed between the car room constituting the elevator car and the car frame, Considering the imbalance between the load in the car room at the start and the weight of the counterweight, set an appropriate load compensation value in the entire load range in advance, and according to the appropriate load compensation value corresponding to the detected load in the car room Compensation torque is given to the drive means in addition to the speed command to realize a comfortable ride.

JP 2006-232420 A

  However, even when an appropriate load compensation value is set, the straight line of the appropriate load compensation value in the entire load region is subsequently shifted due to use over time. The reason for this is that the car has a double structure of a car room and a car frame, and an anti-vibration rubber is interposed between them.

  By the way, since the anti-vibration rubber is constantly compressed from the cab, permanent deflection gradually occurs, and the output of the load detector also changes accordingly. As a result, the appropriate load compensation value in the entire load region also changes, causing unpleasant vibrations at the start, temporarily causing displacement in the direction opposite to the traveling direction, giving passengers discomfort, Causes it to occur.

  Therefore, it is necessary to readjust the original appropriate load compensation value. However, in the readjustment work, it is necessary to prepare test weights for all load areas and perform readjustment for each test weight, which requires a long adjustment time. For this reason, there is a problem that not only is it necessary to manpower but also the service of the elevator is forced to stop, resulting in inconvenience to the user.

  Therefore, the load compensation value adjusting device and the load compensation value adjusting method of the present elevator are to easily perform readjustment processing in a short time without a test weight.

In order to solve the above-described problem, according to an embodiment of the invention, a speed feedback signal is acquired from a driving unit that rotationally drives a hoisting machine that moves up and down a car on which a load detector that detects a car load is installed. The speed control unit that outputs a speed command signal based on the speed feedback signal and the speed reference, the appropriate load compensation value in the entire load region is stored in advance, and the car load detection signal detected by the load detector A load compensation value correcting unit that synthesizes the corresponding appropriate load compensation value with the speed command signal and gives the torque command value to the driving means,
The load compensation value correction unit is an N.D. The current proper load compensation value output in response to the car load detection signal at L is the original N.I. Judgment of whether or not readjustment processing is necessary by deviating from a proper load compensation value at L exceeding a predetermined load detection deviation amount. L load confirmation processing means, and optional load readjustment processing means for performing processing for returning the current appropriate load compensation value straight line to the original proper load compensation value straight line when it is determined that readjustment processing is necessary This is an elevator load compensation value adjusting device.

The schematic block diagram of the elevator system provided with the load compensation value adjustment apparatus of the elevator which concerns on embodiment. FIG. 3 is a functional block diagram of a load confirmation processing unit at NL in the load compensation value correction unit illustrated in FIG. 1. The functional block diagram of the arbitrary load readjustment process part in the load compensation value correction | amendment part shown in FIG. Waveform diagrams of speed command and torque command signal at the time of proper load compensation (FIGS. A and b), and waveform diagrams of speed command and torque command signal at the time of improper load compensation (FIG. C and d). The figure explaining the shift | offset | difference of an appropriate load compensation value, and the shift | offset | difference adjustment. The flowchart explaining the processing operation of the NL load confirmation process part in a load compensation value correction | amendment part. The flowchart explaining the processing operation of the arbitrary load readjustment process part in a load compensation value correction | amendment part. The figure which shows the torque command straight line of the full load area | region (NL-FL) at the time of UP and DN driving | running | working.

  Hereinafter, an elevator load compensation value adjusting apparatus according to an embodiment will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of an elevator system including an embodiment of an elevator load compensation value adjusting device.

  The elevator system outputs a torque command signal for operating the elevator device 1 at a predetermined speed based on a speed reference (speed command pattern), and a load compensation value adjusting device generally referred to as a control device. 2 and a driving means 3 such as an electric motor for rotating the hoisting machine 11 in response to a torque command signal from the load compensation value adjusting device 2.

  The elevator apparatus 1 includes a hoisting machine 11, a main rope 12 wound around the hoisting machine 11, and a passenger car 13 and a counterweight 14 that are respectively suspended at both ends of the main rope 12. .

  The car 13 is formed in a double structure of a car room 13a and a car frame 13b which is an outer frame of the car room 13a, and the anti-vibration rubber 15 and the load detection between the car room 13a lower bottom part and the car frame 13b. The device 16 is sandwiched.

  The load detector 16 detects the load in the car 13 from the amount of deflection of the vibration isolating rubber 15, and sends the detected load detection signal 17 to the load compensation value adjusting device 2.

  The load compensation value adjusting device 2 includes an operation command output unit 21, a speed detector 22 that detects the rotational speed of the driving means 3, a speed control unit 23, a storage unit 24, a load compensation value correction unit 25, a composite calculation element 26, and a display. The configuration includes the portion 27.

  The operation command output unit 21 reads speed reference data (speed reference pattern) 24 a corresponding to ascending (UP), descending (DN), and destination floors stored in the storage unit 24 in advance, and the speed control unit 23 serves as a speed reference 28. To send.

  The speed control unit 23 outputs a speed command signal 30 for setting the deviation between the speed reference 28 and the speed feedback signal 29 detected by the speed detector 22 to zero, and sends the speed command signal 30 to the synthesis calculation element 26.

  Based on the car load detection signal 17 detected by the load detector 16, the load compensation value correction unit 25 reads the appropriate load compensation value data 24 b in all load areas stored in advance in the storage unit 24, and the car load detection signal. 17 is sent to the composition calculation element 26 as a load compensation value 31 corresponding to 17.

  In the storage unit 24, various settings are made in addition to the speed reference data 24a, the appropriate load compensation value data (original proper load compensation value) 24b in the entire load region, the torque command value data 24c during UP and DN travel. A data area 24d is provided, and this setting data area 24d includes N.P. A predetermined load detection deviation amount serving as a standard for readjustment processing at L (no load: no load in the car 13) is set.

  The composite calculation element 26 performs a composite calculation of the load compensation value 31 from the load compensation value correction unit 25 on the speed command signal 30 sent from the speed control unit 23 and supplies it to the drive means 3 as a torque command signal 32.

  Accordingly, the driving means 3 drives the hoisting machine 11 to rotate based on the torque command signal 32 compensated by the load compensation value 31 so that the elevator apparatus 1 runs smoothly at the start, for example, when landing on each floor. It stops smoothly and ensures a stable ride.

  The load compensation value correction unit 25 is always detected by the load detector 16. Based on the load detection signal 17, an appropriate load compensation value 31 corresponding to the appropriate load compensation value data 24b stored in the storage unit 24 is output. In addition, an N.L. load confirmation processing unit 40 and an arbitrary load readjustment process are output. A portion 50 is provided.

  As the NL load confirmation processing unit 40 in the load compensation value correction unit 25, as shown in FIG. 2, an NL load confirmation unit 41, a readjustment determination unit 42, and a readjustment instruction output unit 43 are provided. .

  Further, as the arbitrary load readjustment processing unit 50 in the load compensation value correction unit 25, as shown in FIG. 3, an arbitrary load travel control unit 51, a load compensation value adjustment unit 52, and an adjustment result confirmation unit 53 are provided.

  Next, prior to explaining the readjustment process in the load compensation value correction unit 25 which is a main part of the elevator load compensation value adjustment apparatus according to the present embodiment, a load deviation from the original appropriate load compensation value will be described.

(1) About the load deviation from the original appropriate load compensation value.

  In general, whether or not the load compensation value 31 output from the load compensation value correction unit 25 is an appropriate value can be determined from the presence or absence of an impact such as vibration or reverse at the start of the car. Based on the deviation between the speed reference 28 and the speed feedback signal 29, the speed is accurately adjusted by the waveform of the speed command signal determined in FIG.

  4A and 4B show the speed command signal waveform and the torque command signal waveform at the time of appropriate load compensation, and FIGS. 4C and 4D show the speed command when the proper load compensation value is not appropriate. The signal waveform and the torque command signal waveform are shown. 4 (a) and 4 (b), the conditions under which the original appropriate load compensation value is appropriate are a = b, BL (balance load: a state in which the weight of the car load and the weight 14 is balanced). At this time, the load compensation value is “0”.

  If the car load of the car 13 is the same, even if the load compensation value is different, Ta = Tc, Ta ′ between the torque command signal waveforms at the time of proper load compensation and when the load compensation value is not appropriate. = Tc ', Tb = Td, Tb' = Td '. This is because the torque required for the unbalance of the counterweight 13 and the counterweight 14 is the same.

  However, even if the load compensation value 31 of the load compensation value correction unit 25 does not change, the load detection signal 17 from the load detector 16 is used over time due to changes in the amount of deflection of the vibration isolating rubber 15 as described above. The current load compensation value 31 deviates from the original appropriate load compensation value (at the time of initial adjustment). That is, as shown in FIGS. 4C and 4D, a ′ ≠ b ′.

  Furthermore, the deviation of the appropriate load compensation value 31 will be specifically described with reference to FIG.

In FIG. 5, P: a straight line of an appropriate load compensation value (also referred to as an appropriate load compensation value if appropriate), Ps: a straight line of a load detection signal at the time of initial adjustment by the load detector 16, and Pn: load detection A straight line of the load detection signal accompanied with the secular change by the device 16, and the following relational expression is established between P and Ps at the time of initial adjustment.
P = Ps × A + B (1)
In the above formula, A is the full load region NL-F. A multiplier for adjusting the slope of the appropriate load compensation value in L (F = L = full load: a state where a load corresponding to the rated load capacity is loaded in the car 13). This is a bias value for setting the load compensation value to “0” at L.

  However, as described above, when the load detection signal 17 of the load detector 16 changes from Ps to Pn due to the use over time, the current appropriate load compensation value straight line itself is also shifted from the original proper load compensation value straight line P. It will end up. This is because the load detection signal of the load detector 16 becomes Vn different from the load detection signal at the time of initial adjustment.

(2) About the process of the N.L. load confirmation processing unit 40 by the load compensation value correction unit 25 (see FIG. 6).

  Therefore, it is necessary for the load compensation value correction unit 25 to determine a load deviation amount that is a guideline that requires readjustment processing.

  Therefore, the load compensation value correction unit 25 executes the NL load confirmation unit 41 as shown in FIG.

  In executing the NL load confirmation means 41, for example, the setting data area 24d of the storage unit 24 is previously stored in a periodic date and time that can be stopped for a long time such as at night (for example, 10 days, 20 days, 30 days ( In the case of February, the night service stoppage time of 28th or 29th) is set.

  The NL load confirmation unit 41 determines whether or not the current time has reached a predetermined periodic confirmation date and time set in the setting data area 24d (S1). Here, when it is determined that the current time has reached a predetermined confirmation date and time, it is determined whether or not it is in the NL state (S2).

If it is in the NL state, it is determined whether or not the appropriate load compensation value P output based on the load detection signal detected by the load detector 16 is V ₀ . If the proper load compensation value P is V ₀ , it is a straight line of the proper load compensation value P with no deviation, so it is determined that the readjustment process is not necessary, and the process is terminated.

However, when the appropriate load compensation value P is not V ₀ , the readjustment determination means 42 is executed because a deviation occurs in the straight line of the appropriate load compensation value P.

The readjustment determination unit 42 determines whether readjustment is required, and is a predetermined that requires readjustment processing in which a load deviation with respect to V ₀ is set in the setting data area 24d of the storage unit 24. It is determined whether the load detection deviation amount is exceeded (S4). Here, if the load deviation with respect to V ₀ exceeds a predetermined load detection deviation amount, it is determined that readjustment processing is necessary.

Subsequently, the NL load confirmation processing function unit 40 executes the readjustment instruction output means 43. In other words, the readjustment instruction output means 43, when it is determined in step S4 that the load deviation with respect to V ₀ exceeds the predetermined load detection deviation amount, the readjustment request signal is sent via, for example, the operation command output unit 21 or the like. Is sent to the display unit 27 (S5) to notify the necessity of readjustment.

(3) About the readjustment process of the appropriate load compensation value straight line (see FIG. 7).

  As described above, when the current appropriate load compensation value straight line itself deviates from the original (initial adjustment) proper load compensation value straight line P and the deviation exceeds a predetermined deviation, the display unit 27 is re-displayed. Notification that adjustment is required.

  Therefore, the load compensation value correction unit 25 performs readjustment processing of the appropriate load compensation value straight line by the arbitrary load readjustment processing unit 50 based on this notification. In this readjustment, it is necessary to return the current proper load compensation value straight line to the original proper load compensation value straight line P. For this purpose, parameters such as the multiplier A and the bias value B must be changed.

  Therefore, the arbitrary load readjustment processing unit 50 in the load compensation value correction unit 25 executes the arbitrary load traveling control means 51.

  The arbitrary load travel control means 51 determines whether or not a readjustment instruction is input from the outside based on a notification that the readjustment process is necessary. The vehicle travels in the UP or DN direction according to a travel instruction with one or several people, for example, loads (S12, S13).

  The reason for running the car 13 is that the multiplier A (parameter) is obtained from the slope of the straight line Pn of the load detection signal at the time of aging as shown in FIG. For this purpose, it is necessary to acquire Vn ′ which is a Pn value by traveling with an arbitrary load described above in addition to Vn which is a Pn value at the time of N.L.

  Therefore, after acquiring Vn which is a Pn value at the time of N.L and Vn ′ which is a Pn value by an arbitrary load, the load compensation value adjustment processing means 52 is executed.

The load compensation value adjustment processing means 52 uses Vn and Vn ′ to calculate a multiplier An from the following equation.
An = (Vn−Vn ′) / Wn (2)
Therefore, if Wn is found from Equation (2), the multiplier An can be obtained.

  Here, Wn is acquired from the torque command value data 24c shown in FIG. As already described with reference to FIGS. 4A to 4D, if the load is the same, the required torque value for the unbalance load is the same even if the load compensation value is not appropriate. If torque command value data in NL to F.L during DN traveling is stored, Wn can be easily obtained from torque command value data Tn (UP, DN) shown in FIG.

Therefore, as shown in FIG. 5B, the slope is adjusted by P = Pn × An, and a bias value Bn (parameter) that is the difference between the load compensation value at N and L and V ₀ is acquired (S14). ), The bias value Bn is added so that the load compensation value at N and L becomes V _0, and the proper load compensation value P = Pn × An + Bn in the entire load region is returned as shown by the solid line in the figure (S15).

  Subsequently, the arbitrary load readjustment processing unit 50 in the load compensation value correction unit 25 executes the adjustment result confirmation unit 53.

  The adjustment result confirmation unit 53 travels in, for example, DN operation in the opposite direction to the previous operation (for example, UP operation) (S16), and the previously obtained result of Pn × An + Bn is an appropriate load compensation value in the entire load region. It is confirmed whether it coincides with the Wn point on P (S17). If they match, the readjustment process ends. If they do not match, the process proceeds to step S11. For example, the load is changed again in step S12, or the DN travel is performed first in step S13. Then, readjustment processing is performed in the same processing procedure, and appropriate parameters are determined.

  Therefore, according to the embodiment as described above, when the load detection signal 17 detected by the load detector 16 changes due to use over time, the current appropriate load compensation value is accordingly changed from the original appropriate load compensation value. A load deviation has occurred.

  Therefore, the N.O. The current proper load compensation value output in response to the car load detection signal at L is the original N.I. When the predetermined load detection deviation is exceeded from the appropriate load compensation value at L, the N.C. The parameter for returning to the original appropriate load compensation value line in the entire load area is obtained from the car detection load signal at the time of L and arbitrary load, and the current load compensation value line is obtained using this parameter. Perform correction to restore the original appropriate load compensation value to a straight line.

  Therefore, according to the present embodiment, readjustment processing can be easily performed in a short time without a test weight.

(Other embodiments)
(1) The said embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Elevator apparatus, 2 ... Load compensation value adjustment apparatus, 3 ... Driving means, 13 ... Car, 14 ... Balance weight, 16 ... Load detector, 21 ... Operation command output part, 22 ... Speed detector, 23 ... Speed Control unit, 24 ... storage unit, 25 ... load compensation value correction unit, 26 ... composite calculation element, 27 ... display unit, 40 ... load check processing function unit at NL, 41 ... NL load check means, 42 ... Re-adjustment determination means, 43... Re-adjustment instruction output means, 50... Arbitrary load re-adjustment processing function section, 51... Arbitrary load travel control means, 52.

Claims (6)

A speed feedback signal is obtained from a driving means for rotationally driving a hoisting machine that moves up and down a car on which a load detector for detecting a car load is installed, and a speed command signal is obtained based on the speed feedback signal and the speed reference. The output speed control unit and the appropriate load compensation value in the entire load region are stored in advance, and the appropriate load compensation value corresponding to the car load detection signal detected by the load detector is combined with the speed command signal. A load compensation value correction unit to be given to the drive means as a torque command value,
The load compensation value correction unit is an N.D. The current proper load compensation value output in response to the car load detection signal at L is the original N.I. Judgment of whether or not readjustment processing is necessary by deviating from a proper load compensation value at L exceeding a predetermined load detection deviation amount. L load confirmation processing means, and optional load readjustment processing means for performing processing for returning the current appropriate load compensation value straight line to the original proper load compensation value straight line when it is determined that readjustment processing is necessary An elevator load compensation value adjusting device characterized by the above. In the elevator load compensation value adjusting device according to claim 1,
The load confirmation processing means is configured to detect N.A. from a car load detection signal detected by the load detector. L state is determined, and the current appropriate load compensation value output according to the car load detection signal at this time is the original N.P. N.L load confirmation means for confirming whether the load compensation value is equal to the appropriate load compensation value at L. The current appropriate load compensation value at L is the original N.I. When it is not equal to the appropriate load compensation value at L, the original N.I. Readjustment determination means for determining whether the load deviation with respect to the appropriate load compensation value at L exceeds the predetermined load detection deviation amount, and when it is determined that the load deviation exceeds the predetermined load detection deviation amount, readjustment processing is required. An elevator load compensation value adjusting apparatus, comprising: a readjustment instruction output means for notifying that there is a certain thing. In the elevator load compensation value adjusting device according to claim 2,
The NL load confirmation means determines whether the current date and time has reached a predetermined periodic confirmation date and time, and when the current date and time has reached the predetermined confirmation date and time, the NL load confirmation means An elevator load compensation value adjusting device characterized by starting processing. In the elevator load compensation value adjusting device according to any one of claims 1 to 3,
The arbitrary load readjustment processing means, based on the readjustment instruction input, arbitrary load travel control means for causing the car of arbitrary load to travel UP or DN,
N. at the time of this car run. A parameter for returning to the straight line of the original appropriate load compensation value in the entire load region is acquired from the car detection load signal at the time of L and an arbitrary load, and the current appropriate load compensation value is restored using this parameter. A load compensation value adjustment device for an elevator, comprising: a load compensation value adjustment processing means for correcting so as to be a straight line of the appropriate load compensation value. In the elevator load compensation value adjusting device according to claim 4,
The parameters include a multiplier for correcting a straight slope of an appropriate load compensation value in the entire load region, and the B. A load compensation value adjusting device for an elevator characterized by a bias value with a load compensation value of 0 at L. The appropriate load compensation value in the entire load area is stored in advance, the appropriate load compensation value corresponding to the car load detection signal detected by the load detector installed in the car is taken out, and the speed output from the speed control unit Combining the command signal into a torque command value, and rotationally driving the hoisting machine that raises and lowers the car;
At each predetermined confirmation date and time determined in advance, N.D. The current proper load compensation value output in response to the car load detection signal at L is the original N.I. L. Determining whether or not readjustment processing is necessary by deviating beyond a predetermined load detection deviation amount from the appropriate load compensation value at L. L load confirmation processing step;
This N.I. And an arbitrary load readjustment processing step for performing a process of returning the straight line of the current appropriate load compensation value to the original proper load compensation value straight line when it is determined that the readjustment process is necessary in the L load confirmation processing step. Elevator load compensation value adjustment method as a feature.

Images