CN112978523B - Elevator control cabinet reliability ground equivalent verification system and method - Google Patents
Elevator control cabinet reliability ground equivalent verification system and method Download PDFInfo
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- CN112978523B CN112978523B CN202110359581.8A CN202110359581A CN112978523B CN 112978523 B CN112978523 B CN 112978523B CN 202110359581 A CN202110359581 A CN 202110359581A CN 112978523 B CN112978523 B CN 112978523B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
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- 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
- B66B5/0037—Performance analysers
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- Automation & Control Theory (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
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- Computer Networks & Wireless Communication (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The invention discloses a ground equivalent verification system and a ground equivalent verification method for the reliability of an elevator control cabinet, wherein the system comprises a device to be verified, a load simulation device and a verification control device; the device to be verified comprises an elevator control cabinet and an elevator traction machine, and the load simulation device comprises a load control cabinet and a load motor; the load control cabinet is connected with the current sensor in a closed loop manner; the load motor is in transmission connection with the power output end of the elevator traction machine; the verification control device is electrically connected with the elevator control cabinet and the load control cabinet respectively; the elevator control cabinet sends a starting or stopping instruction to the verification control device and the load control cabinet, and the load simulation device synchronously realizes loading and stopping of a load according to the instruction; the invention can finish the simulation of the operation condition of the elevator on the ground with high precision, realize the matching verification of the reliability of the control cabinet in the development, especially the performance verification of the power circulation, the thermal cycle life and the like of the power module in the main loop, without occupying hoistway resources, shortening the verification period and reducing the consumption of resources.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to a ground equivalent verification system and method for the reliability of an elevator control cabinet.
Background
The reliability test of the general elevator control cabinet is to install a complete elevator prototype on a tower for verification, continuously and periodically test the elevator in a certain running mode by using the full load of the elevator or the self-defined load of the elevator, verify whether the temperature rise of a main loop component (such as a power module and the like) in the limit working condition of the elevator meets the design requirement, and achieve the aim of verifying the reliability of the control cabinet by accelerating and simulating the running working condition of the whole life design period of the elevator. The reliability of the conventional tower sample loading elevator verification control cabinet is insufficient due to the limitations of insufficient elevator sample shaft height, difficulty in simulation of working peaks (full load ascending-empty descending) and working peaks (empty load ascending-full load descending) and the like.
Some existing elevator equivalent test devices mainly perform functional logic verification of an elevator system, pulsation torque of a traction machine, electric characteristics of a motor, braking performance, service life test verification and the like. However, performance and life tests of the power module (IPM, PIM, IGBT and rectifier bridge) of the variable frequency drive of the control cabinet cannot be satisfied. The main difficulty is that the power module is a high-heating device, although the power module is additionally provided with radiating designs such as radiating fins and fans, the current of the frequency converter can be rapidly increased at the moment of elevator acceleration to further cause rapid temperature rise of the power module, the junction temperature of the power module directly influences the service life of the power module, and the acceleration current of the elevator is mainly influenced by the inertia and the load of the whole elevator, so that the flywheel of the test device for simulating the inertia of the elevator by using the flywheel is very accurate, the flywheel of which cannot be truly and accurately simulated at present, the acceleration current curve of the flywheel cannot be distorted, the junction temperature test of the power module is inaccurate, and the service life of the elevator cannot be accurately verified after long-term running under the working condition.
Meanwhile, in order to prevent the situation of backward slip caused by the gravity difference generated by unbalanced lift car and counterweight at the moment when the band-type brake is opened before the lift is started, the frequency converter of the control cabinet can give an equal-large reverse compensation moment to enable the motor to keep a zero-speed state, the temperature of the power module also rises sharply in a low-frequency opening state, and the state needs to be truly simulated in a ground equivalent device, namely corresponding moment loading is needed at the moment. The patent with the publication number of CN106986246B is to realize dynamic simulation of load loading according to the rotating speed signal of the traction machine, the control mode cannot realize the simulation loading at the moment before and after the band-type brake is opened, and the situation that a load motor is blocked for a long time when a load host stops a ladder is caused by zero rotating speed loading, namely, long-term short circuit heating of the load motor and low-frequency opening rapid heating of a power module are caused, so that the service lives of the motor and the power module of a frequency converter are shortened, and even the service lives of the motor and the power module of the frequency converter are burnt out.
Disclosure of Invention
The invention aims to provide a ground equivalent verification system and method for the reliability of an elevator control cabinet, which can finish matching verification of the reliability of the control cabinet in elevator development on the ground without occupying hoistway resources, shorten verification period and reduce resource consumption.
The invention is realized by the following technical scheme:
the ground equivalent verification system for the reliability of the elevator control cabinet comprises a device to be verified, a load simulation device and a verification control device; the device to be verified comprises an elevator control cabinet and an elevator traction machine, wherein the elevator control cabinet is electrically connected with the elevator traction machine; the load simulation device comprises a load control cabinet and a load motor; the load control cabinet is connected with the current sensor in a closed loop manner; the load motor is in transmission connection with the power output end of the elevator traction machine; the verification control device is electrically connected with the elevator control cabinet and the load control cabinet respectively.
Further, the verification control device comprises a temperature detection and display module, a load current input module and a layer height information input module; the emergency stop switch and the temperature limiting relay of the verification control device are connected in series in the safety loop of the elevator control cabinet, the elevator control cabinet sends a start or stop instruction to the verification control device and the load control cabinet, and the load simulation device synchronously realizes loading and stopping of a load according to the instruction.
Further, the load control cabinet comprises a load moment current control module; the load current input module transmits instructions to the load moment current control module, and the load moment current control module is respectively connected with the current sensor, the load motor and the traction machine motor in a closed loop mode.
Further, the temperature sensor contained in the temperature detection module is arranged in a part to be tested in the elevator control cabinet, and is used for monitoring the temperature of each test point in real time and outputting an alarm or stop instruction when the temperature value is higher than a set value temperature value.
Further, the temperature display module is used for displaying real-time values and input temperature limit values of the temperature sensors, generating corresponding time curves and automatically storing the time curves in the memory or the hard disk of the verification control device.
Further, the load current input module picks up key time points of the elevator running up and down according to the on-tower elevator running current curve data, and is used for feedforward time control of load current closed-loop control; the load current input module converts the processed data into analog quantity and transmits the analog quantity to the load moment current control module; the load moment current control module drives the load motor to output load moment according to a set curve, monitors elevator traction machine motor current given by the device to be verified when overcoming the moment in real time through the current sensor, and feeds current data back to the load moment current control module to realize closed-loop control of simulated loading.
Further, the floor height information input module inputs corresponding information according to actual elevator floor height and elevator lifting height, the elevator traction machine encoder signals are multiplexed to achieve simulation of floor leveling and limit switch signals, and the elevator control cabinet achieves distance control according to the elevator traction machine encoder signals.
Further, the current sensor is arranged on the power wires of the elevator control cabinet and the elevator traction machine, and the current sensor is used for collecting real-time current of the elevator traction machine.
Further, the device also comprises a foundation, a base and a power supply device; the elevator traction machine and the load motor are both erected and installed on the foundation and the base; the power supply equipment is used for supplying power to the elevator control cabinet, the load control cabinet and the verification control device.
Further, the ground equivalent verification method for the reliability of the elevator control cabinet comprises the following steps:
step S1: firstly, confirming that the rated output power of a load simulation device is larger than or equal to the rated output power of a device to be verified, installing an elevator traction machine to be verified to an installation position, connecting a power output end of the elevator traction machine with the load simulation device in a power mode, and electrically connecting an elevator control cabinet to be verified with the elevator traction machine and the verification control device;
step S2: arranging or embedding a temperature sensor led out by a temperature detection module of the verification control device in a part to be tested in the elevator control cabinet to be verified, and sleeving a current sensor magnetic ring on a power wire of the elevator control cabinet and an elevator traction machine;
step S3: acquiring a motor current effective value curve of a device to be verified or an elevator sample ladder on a tower with the same specification as the verification device, which runs up and down in the whole course for one period by using an oscilloscope;
step S4: converting the current curve obtained by the oscilloscope in the step S3 into a data file with a regular sampling rate;
step S5: the data file obtained in the step S4 is imported or input into a load current input module in the verification control device, and the load current input module automatically identifies the key starting point of the data, so that the load simulation device can synchronously apply reverse equivalent torque load when the elevator control cabinet to be verified is started; meanwhile, the load current input module transmits the processed data to a current curve generating module in the load control cabinet, so as to generate load simulation moment, and the output of the moment and a current sensor form closed-loop control;
step S6: setting elevator operation parameters for the verification control device according to the operation condition of the elevator control cabinet to be verified, wherein the elevator floor height and the elevator lifting height H, if the current curve data actually measured in the step S3 correspond to each otherThe lifting height of the elevator on the tower is smaller than the height required to be tested, and correction is required to be carried out: increase run time t= (H Verification -H Actual measurement )/V Rated speed of elevator The load simulation moment curve automatically increases the constant moment analog quantity with the time length of T in the middle constant section; for another example, simulating working conditions of working peak-full-load ascending and full-load descending, and step S3 needs to measure current curves of the full-load ascending and full-load descending processes respectively, and input the current curves into a verification control device respectively, and a load current input module automatically synthesizes the whole running period curve, otherwise, working peak-full-load ascending and full-load descending are realized by the same method, and meanwhile, the temperature rise use limit value of main components monitored by an elevator control cabinet to be verified is input;
step S7: and the temperature rise condition of the main components of the control cabinet in the simulation operation, the operation current of the elevator traction machine and the operation times are read through the verification control device.
The invention has the beneficial effects that:
according to the elevator ground equivalent verification system formed by the device to be verified, the load simulation device and the verification control device, the simulation of the elevator operation working condition can be completed on the ground with high precision, the matching verification of the reliability of the control cabinet in development is realized, and particularly the performance verification of the power cycle, the thermal cycle life and the like of the power module in the main loop is realized, so that hoistway resources are not occupied, the verification period is shortened, and the consumption of resources is reduced. The method of the invention furthest reduces the long-term blocking phenomenon of the load motor and the low-frequency opening time of the power module of the load control cabinet when the load host stops the elevator, thereby avoiding the long-term short-circuit heating burnout of the load motor and the exceeding of the junction temperature of the power module when the power module is opened at zero speed.
Drawings
Fig. 1 is a schematic structural diagram of a ground equivalent verification system for reliability of an elevator control cabinet according to an embodiment of the present invention;
fig. 2 is a flowchart for verifying the reliability of a control cabinet according to an embodiment of the present invention, in which the operating conditions of the elevator during the up-and-down operation and the peak working conditions during the business hours are taken as examples.
In the accompanying drawings: 1-an elevator traction machine; 2-an elevator control cabinet; 3-load motor; 4-a load control cabinet; 5-verifying the control device; 6-a current sensor; 7-a power supply device; 8-coupling; 9-a foundation and a base; 10-temperature sensor.
Detailed Description
The present invention will now be described in detail with reference to the drawings and the detailed description thereof, wherein the invention is illustrated by the schematic drawings and the detailed description thereof, which are included to illustrate and not to limit the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, back, upper, lower, top, bottom … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicators are correspondingly changed.
In the present invention, unless explicitly specified and limited otherwise, the term "connected" is to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first", "a second" may include at least one such feature, either explicitly or implicitly; in addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
As shown in fig. 1, the elevator control cabinet reliability ground equivalent verification system comprises a device to be verified, a load simulation device and a verification control device 5; the device to be verified comprises an elevator control cabinet 2 and an elevator traction machine 1, wherein the elevator control cabinet 2 is electrically connected with the elevator traction machine 1; the load simulation device comprises a load control cabinet 4 and a load motor 3; the load control cabinet 4 is connected with the current sensor 6 in a closed loop manner; the load motor 3 is in transmission connection with the power output end of the elevator traction machine 1; the verification control device 5 is electrically connected with the elevator control cabinet 2 and the load control cabinet 4 respectively. The elevator traction machine 1 is connected with the power output end of the load motor 3 by a preferable coupling 8; the current sensor 6 is preferably a ammeter or a hall sensor; according to the elevator ground equivalent verification system formed by the device to be verified, the load simulation device and the verification control device 5, the matching verification of the reliability of the control cabinet in the elevator development can be completed on the ground, the hoistway resources are not occupied, the verification period is shortened, and the consumption of the resources is reduced.
Specifically, in this embodiment, the verification control device 5 includes a temperature detection and display module, a load current input module, and a layer height information input module; the emergency stop switch and the temperature limiting relay of the verification control device 5 are connected in series in the safety loop of the elevator control cabinet 2, the elevator control cabinet 2 sends a starting or stopping instruction to the verification control device 5 and the load control cabinet 4, and the load simulation device synchronously realizes loading and stopping of a load according to the instruction. It should be noted that the control method has the advantages that: the long-term blocking phenomenon of the load motor 3 and the low-frequency opening time of the power module of the load control cabinet 4 when the load main machine stops the elevator are reduced to the greatest extent, and further, the long-term short-circuit heating burning of the load motor 3 and the exceeding of the junction temperature of the power module during zero-speed opening are avoided.
Specifically, in this embodiment, the load control cabinet 4 includes a load moment current control module; the load current input module transmits a command to the load moment current control module, and the load moment current control module is respectively connected with the current sensor 6 and the load motor 3 in a closed loop.
Specifically, in this embodiment, the temperature sensor 10 included in the temperature detection module is disposed in a component to be tested in the elevator control cabinet 2, and is configured to monitor the temperature of each test point in real time, and output an alarm or stop command when the temperature value is above a set value temperature value. And corresponding accidents caused by the overhigh temperature of the measured part in the test process are prevented.
Specifically, in this embodiment, the temperature display module is configured to display the real-time values and the input temperature limit values of each temperature sensor 10, and generate a corresponding time curve and automatically store the time curve in the memory or the hard disk of the verification control device 5.
Specifically, in the embodiment, the load current input module inputs related data (preferably EXCEL and MATLAB, digital quantity) of an actual tower current running curve (RMS) of the elevator from the outside; the load current input module picks up key time points (an elevator uplink starting point and an elevator downlink starting point) of elevator uplink and downlink operation according to curve data, and is used for feedforward time control of load current closed-loop control; it should be noted that, due to the inherent characteristic of the hysteresis of the closed-loop feedback control, feedforward correction is required to achieve the consistency of the running current curve on the elevator tower, and the time intervention point of the feedforward control must be accurate; the load current input module converts the processed data into three modes, namely (1) a full-load period operation mode, (2) a shift-in peak operation mode and (3) a shift-out peak operation mode, and then transmits the analog quantity to the load moment current control module; the load moment current control module drives the load motor 3 to output load moment according to a set current curve, monitors the motor current of the elevator traction machine 1, which is given by the device to be verified and overcomes the moment, in real time through the current sensor 6, and feeds back monitoring current data to the load moment current control module to realize closed-loop control of simulated loading. Meanwhile, as the performance parameters of the load motor 3 and the traction machine motor are different, if the efficiency eta and the power factor PF of the load motor 3 and the traction machine motor are not simultaneously required to be equivalent, the current sensor 6 outputs current(wherein, the load motor is eta and PF, the traction machine motor 3 is eta and PF').
Specifically, in this embodiment, the floor height information input module inputs corresponding information according to the actual elevator floor height and elevator lifting height, multiplexes the encoder signal of the elevator traction machine 1 to realize the simulation of the floor leveling and limit switch signals, preferably the realization of a PLC, and the elevator control cabinet 2 realizes the distance control according to the encoder signal of the elevator traction machine 1.
Specifically, in this embodiment, the current sensor 6 is installed on a phase, preferably a U phase, of the power wire of the elevator control cabinet 2 and the elevator traction machine 1, and the current sensor 6 is used for collecting real-time current of the elevator traction machine 1.
Specifically, in this embodiment, the device further includes a base and pedestal 9 and a power supply device 7; the elevator traction machine 1 and the load motor 3 are arranged on the foundation and the base 9 in a erection mode; the power supply device 7 is used for supplying power to the elevator control cabinet 2, the load control cabinet 4 and the verification control device 5.
As shown in fig. 2, in particular, in this embodiment, a method for verifying the reliability of an elevator control cabinet by ground equivalent includes the following steps:
step S1: firstly, confirming that the rated output power of a load simulation device is larger than or equal to the rated output power of a device to be verified, installing an elevator traction machine 1 to be verified in an installation position, connecting the power output end of the elevator traction machine 1 with the load simulation device in a power way, and electrically connecting an elevator control cabinet 2 to be verified with the elevator traction machine 1 and a verification control device 5;
step S2: a temperature sensor 10 led out by a temperature detection module of the verification control device 5 is arranged or pre-embedded in a part (such as a power module, a bus capacitor, a reactor and the like) to be tested in the elevator control cabinet 2 to be verified, and a current sensor 6 is sleeved on a power wire of the elevator control cabinet 2 and the elevator traction machine 1 in a magnetic ring manner;
step S3: acquiring a motor current effective value curve of a device to be verified or an elevator sample ladder on a tower with the same specification as the verification device, which runs up and down in the whole course for one period by using an oscilloscope;
step S4: converting the current curve obtained by the oscilloscope in the step S3 into a data file with a regular sampling rate, and preferably selecting EXCEL and MATLAB data;
step S5: the data file obtained in the step S4 is imported or input into a load current input module in the verification control device 5, and the load current input module automatically identifies the key starting points (the elevator uplink starting compensation stress application point and the elevator downlink starting compensation stress application point) of the data, so that the load simulation device can synchronously apply reverse equivalent torque load when the elevator control cabinet 2 to be verified is started; meanwhile, the load current input module transmits the processed data to a current curve (analog quantity) generating module in the load control cabinet 4, so as to generate load analog moment, and the output of the moment and the current sensor 6 form closed-loop control;
step S6: setting elevator operation parameters for the verification control device 5 according to the operation working condition of the elevator control cabinet 2 to be verified, wherein the elevator floor height and the elevator lifting height H are required to be corrected if the current curve data actually measured in the step S3 correspond to the elevator lifting height on the tower to be smaller than the height required to be tested: increase run time t= (H Verification -H Actual measurement )/V Rated speed of elevator The load simulation moment curve automatically increases the constant moment analog quantity with the time length of T in the middle constant section; for another example, simulating working conditions of working peak-full load ascending and no-load descending (on the contrary, working peak-no-load ascending and full load descending), then step S3 needs to measure current curves of full load ascending and no-load descending in the whole course respectively, and input the current curves into the verification control device 5 respectively, and the load current input module automatically synthesizes the whole running period curve, and simultaneously inputs the temperature rise use limit value (such as the temperature rise value when the data is converted to the environmental temperature of 40 ℃ when the motor machine room is arranged) of the main components monitored by the elevator control cabinet 2 to be verified;
step S7: the temperature rise condition of the main parts (power modules and the like) of the control cabinet in the simulation operation, the operation current and the operation times of the elevator traction machine 1 are read through the verification control device 5.
Taking the full-load up-and-down running of the elevator and the working condition of the peak at work as an example, the verification flow chart of the reliability (the performance of the main loop component) of the control cabinet is shown in fig. 2.
According to the elevator ground equivalent verification system formed by the device to be verified, the load simulation device and the verification control device 5, the simulation of the elevator operation working condition can be completed on the ground with high precision, the matching verification of the reliability of the control cabinet in development is realized, and particularly the performance verification of the power cycle, the thermal cycle life and the like of the power module in the main loop is realized, so that the hoistway resources are not occupied, the verification period is shortened, and the consumption of the resources is reduced. The method of the invention furthest reduces the long-term blocking phenomenon of the load motor 3 and the low-frequency opening time of the power module of the load control cabinet 4 when the load host stops, thereby avoiding the long-term short-circuit heating burnout of the load motor 3 and the exceeding of the junction temperature when the power module is opened at zero speed.
The foregoing has described in detail the technical solutions provided by the embodiments of the present invention, and specific examples have been applied to illustrate the principles and implementations of the embodiments of the present invention, where the above description of the embodiments is only suitable for helping to understand the principles of the embodiments of the present invention; meanwhile, as for those skilled in the art, according to the embodiments of the present invention, there are variations in the specific embodiments and the application scope, and the present description should not be construed as limiting the present invention.
Claims (8)
1. The utility model provides an elevator control cabinet reliability ground equivalent verification system which characterized in that: the device comprises a device to be verified, a load simulation device and a verification control device; the device to be verified comprises an elevator control cabinet and an elevator traction machine, wherein the elevator control cabinet is electrically connected with the elevator traction machine; the load simulation device comprises a load control cabinet and a load motor; the load control cabinet is connected with the current sensor in a closed loop manner; the load motor is in transmission connection with the power output end of the elevator traction machine; the verification control device is electrically connected with the elevator control cabinet and the load control cabinet respectively; the load control cabinet comprises a load moment current control module; the verification control device comprises a load current input module; the load current input module transmits a command to the load moment current control module, and the load moment current control module is respectively connected with the current sensor and the load motor in a closed loop;
the load current input module converts data processed by a current curve to be simulated into an analog quantity and then transmits the analog quantity to the load moment current control module; the load moment current control module drives the load motor to output load moment according to a set curve, monitors elevator traction machine motor current given by the device to be verified when overcoming the moment in real time through the current sensor, and feeds current data back to the load moment current control module to realize closed-loop control of simulated loading.
2. The elevator control cabinet reliability ground equivalent verification system of claim 1, wherein: the verification control device also comprises a temperature detection and display module and a layer height information input module; the emergency stop switch and the temperature limiting relay of the verification control device are connected in series in the safety loop of the elevator control cabinet, the elevator control cabinet sends a starting or stopping instruction to the verification control device and the load control cabinet, and the load simulation device synchronously realizes loading and stopping of a load according to the instruction; and the load current input module picks up key time points of the elevator running up and down according to the on-tower elevator running current curve data and is used for feedforward time control of load current closed-loop control.
3. The elevator control cabinet reliability ground equivalent verification system of claim 2, wherein: the temperature sensor contained in the temperature detection module is arranged in a part to be tested in the elevator control cabinet, and is used for monitoring the temperature of each test point in real time and outputting an alarm or stop instruction when the temperature value is higher than a set value temperature value.
4. The elevator control cabinet reliability ground equivalent verification system of claim 2, wherein: the temperature display module is used for displaying real-time numerical values and input temperature limit values of the temperature sensors, generating corresponding time curves and automatically storing the time curves in the memory or the hard disk of the verification control device.
5. The elevator control cabinet reliability ground equivalent verification system of claim 2, wherein: the floor height information input module inputs corresponding information according to actual elevator floor height and elevator lifting height, the elevator traction machine encoder signals are multiplexed to achieve simulation of floor leveling and limit switch signals, and the elevator control cabinet achieves distance control according to the elevator traction machine encoder signals.
6. The elevator control cabinet reliability ground equivalent verification system of claim 1, wherein: the current sensor is arranged on the power electric wires of the elevator control cabinet and the elevator traction machine, and the current sensor is used for collecting real-time current of the elevator traction machine.
7. The elevator control cabinet reliability ground equivalent verification system of claim 1, wherein: the device also comprises a foundation, a base and power equipment; the elevator traction machine and the load motor are both erected and installed on the foundation and the base; the power supply equipment is used for supplying power to the elevator control cabinet, the load control cabinet and the verification control device.
8. An equivalent verification method based on the elevator control cabinet reliability ground equivalent verification system as claimed in claim 1, characterized by comprising the following steps:
step S1: firstly, confirming that the rated output power of a load simulation device is larger than or equal to the rated output power of a device to be verified, installing an elevator traction machine to be verified to an installation position, connecting a power output end of the elevator traction machine with the load simulation device in a power mode, and electrically connecting an elevator control cabinet to be verified with the elevator traction machine and the verification control device;
step S2: arranging or embedding a temperature sensor led out by a temperature detection module of the verification control device in a part to be tested in the elevator control cabinet to be verified, and sleeving a current sensor magnetic ring on a power wire of the elevator control cabinet and an elevator traction machine;
step S3: acquiring a motor current effective value curve of a device to be verified or an elevator control cabinet with the same specification as the device to be verified or a sample ladder installed on a tower by a traction machine in a whole course up and down operation period;
step S4: converting the current curve obtained by the oscilloscope in the step S3 into a data file with a regular sampling rate;
step S5: the data file obtained in the step S4 is imported or input into a load current input module in the verification control device, and the load current input module automatically identifies a data key starting point, so that the load simulation device can synchronously apply reverse torque load when the elevator control cabinet to be verified is started; meanwhile, the load current input module transmits the processed data to a current curve generating module in the load control cabinet, so as to generate load simulation moment, and the output of the moment and a current sensor form closed-loop control;
step S6: setting elevator operation parameters for the verification control device according to the operation working condition of the elevator control cabinet to be verified, wherein the elevator layer height and the elevator lifting height H are required to be corrected if the current curve data actually measured in the step S3 correspond to the elevator lifting height on the tower to be smaller than the height required to be tested: increase run time t= (H Verification -H Actual measurement ）/V Rated speed of elevator The load simulation moment curve automatically increases the constant moment analog quantity with the time length of T in the middle constant section; for another example, simulating working conditions of working peak-full-load ascending and full-load descending, and step S3 needs to measure current curves of the full-load ascending and full-load descending processes respectively, and input the current curves into a verification control device respectively, and a load current input module automatically synthesizes the whole running period curve, otherwise, working peak-full-load ascending and full-load descending are realized by the same method, and meanwhile, the temperature rise use limit value of main components monitored by an elevator control cabinet to be verified is input;
step S7: and the temperature rise condition of the main components of the control cabinet in the simulation operation, the operation current of the elevator traction machine and the operation times are read through the verification control device.
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| CN202110359581.8A CN112978523B (en) | 2021-04-02 | 2021-04-02 | Elevator control cabinet reliability ground equivalent verification system and method |
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| CN114216661A (en) * | 2021-10-22 | 2022-03-22 | 盐城和阳驱动科技有限公司 | Service life detection device for traction machine brake |
| CN114035044B (en) * | 2021-10-26 | 2023-08-22 | 日立楼宇技术（广州）有限公司 | Method, system, device and medium for testing rated load of motor |
| CN114906687A (en) * | 2022-04-20 | 2022-08-16 | 永大电梯设备（中国）有限公司 | Device and method for equivalent test of elevator ground |
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