Variable frequency driving system for elevator control

Abstract

The invention relates to the technical field of elevator control, and discloses a variable frequency driving system for elevator control, the system comprises a dynamic speed regulation control end, a voltage frequency cooperation end, a harmonic suppression management end and a multi-stage voice alarm module, the dynamic speed regulation control end is arranged, and when elevator operation control is carried out, the voltage frequency cooperation end is matched with the harmonic suppression management end; a speed regulation and control curve is automatically generated based on the load state and the operation requirement, and the acceleration change process is optimized in the start-stop stage, so that the system can eliminate current impact during traditional power frequency start, stable start of a motor is ensured, load impact of mechanical transmission parts is reduced, and abnormal abrasion of equipment is avoided; voltage and frequency output characteristics are dynamically matched by adopting a closed-loop regulation technology, so that the system can automatically regulate power output according to actual load requirements, the defects of light-load energy consumption waste and insufficient heavy-load power of a traditional scheme are overcome, and efficient and stable operation under different load working conditions is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator control, and in particular to a variable frequency drive system for elevator control. Background Art

[0002] With the increasing number of high-rise buildings, the number of construction elevators for high-rise buildings has increased dramatically. Elevators are frequently used machines for carrying people and cargo. Due to their unique box structure, passengers can ride comfortably and safely. However, the potential safety hazards of elevators are becoming increasingly prominent. In wind turbine tower elevator systems, the traditional drive method mainly adopts the direct starting solution of industrial frequency motors.

[0003] However, this traditional drive solution has the following defects:

[0004] 1. Severe starting shock: The starting current generated during direct starting is higher than the rated current, causing a momentary shock to the power grid and causing the mechanical transmission system to bear severe shock loads.

[0005] 2. Poor speed regulation performance: It can only achieve fixed speed operation and cannot adjust the operating speed according to the actual load conditions, resulting in energy waste when lightly loaded and insufficient power when heavily loaded.

[0006] 3. Excessive energy consumption: The motor always runs at rated power, and the proportion of ineffective energy consumption is large under light load conditions.

[0007] 4. Increased mechanical wear: The instantaneous impact during the start-stop phase accelerates the wear of the gear meshing surface. Maintenance records show that the replacement cycle of the elevator gearbox driven by industrial frequency is shorter than that of the variable frequency drive.

[0008] Therefore, in response to the above problems, the present invention provides a variable frequency drive system for elevator control that can achieve smooth speed regulation, dynamic energy saving, and reduce mechanical impact of the elevator drive solution to meet the high reliability and high energy efficiency operation requirements of the wind turbine tower elevator. Summary of the Invention

[0009] (1) Technical problems solved

[0010] In view of the deficiencies of the prior art, the present invention provides a variable frequency drive system for elevator control, which solves the problems raised in the above background technology.

[0011] (2) Technical solution

[0012] To achieve the above objectives, the present invention provides the following technical solutions: a variable frequency drive system for elevator control, the system comprising a dynamic speed control terminal, a voltage-frequency coordination terminal, and a harmonic suppression management terminal, wherein the dynamic speed control terminal, the voltage-frequency coordination terminal, and the harmonic suppression management terminal are connected to a multi-level voice alarm module;

[0013] The dynamic speed control end obtains passenger flow data in real time through the car thermal detector and the floor call, generates an elevator speed dynamic control curve in combination with a historical operation database, automatically sets an acceleration conversion critical point in a multi-story stopping scenario, controls the acceleration change rate within a safety threshold through an optimization algorithm, and triggers a frequency reducer command when an abnormal acceleration mutation is detected;

[0014] The voltage frequency coordination end monitors current and bus voltage in real time through the inverter and the voltage sensor, dynamically adjusts the start-stop stage PWM waveform through closed-loop control, and ensures that torque fluctuation is less than 5% of the rated value.

[0015] The harmonic suppression management end detects high-order harmonic components in the frequency converter output in real time through the embedded spectrum analyzer and the vibration sensor, establishes a carrier frequency and harmonic distortion correlation model, automatically reduces the carrier frequency proportional coefficient and activates the transient voltage protection circuit when the 11th and 13th characteristic harmonic amplitudes exceed the standard.

[0016] The multi-level voice alarm module performs three-level response: broadcast light voice when voltage drops by more than 10%; broadcast medium voice when voltage is greater than 15% and harmonic is broadcast; broadcast voice and flash red light alarm when voltage is greater than 20%.

[0017] Preferably, S1, the track inspection vehicle carries static detection equipment to collect track geometric static waveform data M, and carries dynamic detection equipment to collect track geometric dynamic waveform data N; wherein M represents a track geometric shape parameter set under non-driving state with track mileage parameter as coordinate axis, and N represents a track geometric shape parameter set under driving state with track mileage parameter as coordinate axis;

[0018] S2, the bidirectional search algorithm is used to identify the sampling frequency of M and N in the track supervision platform to generate track geometric static waveform frequency data M pinlv and track geometric dynamic waveform frequency data N pinlv ;

[0019] S3, compare M pinlv and N pinlv : if the frequencies are the same, execute S5; if they are different, execute S4;

[0020] S4, adjust M pinlv to be consistent with N pinlv using linear interpolation algorithm to generate track geometric static waveform adjustment data M tiaozheng ;

[0021] S5, align M, M tiaozheng and N with the mileage parameter as the reference system to construct track geometric static and dynamic waveform combined data

[0022] S6, establishing a standard waveform combination matrix W=(w1, …, w h , …, w θ ) corresponding to different track mileage calibration algorithms, matching K and w h based on the fish eagle optimization algorithm to generate target track mileage calibration algorithm type feature data G;

[0023] S7, combining K and G to construct track mileage calibration summary data R, calling the calibration program corresponding to G to process R, and generating track geometry dynamic waveform calibration data G dongtai .

[0024] Preferably, the S1 specifically comprises:

[0025] S11, the static detection device includes a laser range finder and an inclination sensor, and measures the track orientation parameters, track gauge parameters and horizontal shape parameters.

[0026] S12, the dynamic detection device includes a gyroscope, an accelerometer, a laser range finder and an inclination sensor, and real-time collects track deformation data in a driving state.

[0027] Preferably, the bidirectional search algorithm in the S2 is executed in the following manner:

[0028] Traverse the track supervision platform metadata with "sampling frequency" as the keyword, and locate the frequency identification field in the waveform file header.

[0029] Preferably, the frequency consistency judgment logic of the S3 is:

[0030] If |M pinlv -N pinlv | is less than 0.1 Hz, it is determined that the frequencies are the same, otherwise it is determined that the frequencies are different.

[0031] Preferably, the linear interpolation algorithm of the S4 satisfies:

[0032]

[0033] Wherein, M(x i ) is the value of the original static waveform at the i-th sampling point, x is the target interpolation position, and x i is the i-th sampling point position.

[0034] Preferably, the standard waveform combination matrix W in the S6 includes 9 algorithm types, specifically:

[0035] The main point iterative correction algorithm, the improved DTW algorithm, the chord value conversion and comparison algorithm, and the combination algorithm thereof.

[0036] Preferably, the fish eagle optimization algorithm in the S6 includes:

[0037] S621, initialize the fish eagle position

[0038] L i，θ = t + r x (η - t)

[0039] wherein t, η are search space boundaries;

[0040] S622, update the position in the exploration stage

[0041] L' i，θ = L i，θ + r x (μ - v x L i，θ )

[0042] wherein μ is a target position vector; v is a constant with values 1, 2;

[0043] fitness ◇' i，θ is greater than ◇ i，θ then replace the position;

[0044] S623, calculate a new position in the development stage

[0045]

[0046] ◇" i，θ is greater than ◇ i，θ then update the position;

[0047] S624, iteratively execute S622 to S623 until a maximum iteration number T is reached,

[0048] S625, output the optimal w h corresponding to the algorithm type identifier G.

[0049] Preferably, the calculation formula of the fitness ◇ is:

[0050]

[0051] wherein n is the number of waveform data points.

[0052] Preferably, the track mileage calibration processing in S7 comprises:

[0053] extract the dynamic and static waveform feature difference in the same mileage interval, fit the mileage offset based on the least square method, and correct N.

[0054] (Three) beneficial effects

[0055] Compared with the prior art, the present application provides a variable frequency drive system for elevator control, which has the following beneficial effects:

[0056] 1. In the present application, by setting the dynamic speed control end, when the elevator operation control is carried out, the speed control curve is automatically generated based on the load state and the operation demand, and the acceleration change process is optimized in the start and stop stage, so that the system can eliminate the current impact when starting at the traditional power frequency, ensure the smooth start of the motor, and at the same time reduce the load impact of the mechanical transmission parts, avoid abnormal wear of the equipment.

[0057] 2. In the present application, by setting the voltage frequency coordination end, when the motor driving control is carried out, the closed-loop regulation technology is used to dynamically match the voltage and frequency output characteristics, so that the system can automatically adjust the power output according to the actual load demand, overcome the defects of waste of energy consumption under light load and insufficient power under heavy load in traditional schemes, and ensure efficient and stable operation under different load conditions.

[0058] 3. In the present application, by setting the harmonic suppression management end, when the frequency converter output is controlled, the characteristic harmonic components are identified in real time and the dynamic suppression mechanism is triggered, so that the system can eliminate electromagnetic oscillation and mechanical vibration caused by high-order harmonics, protect the insulation performance of the motor winding, prolong the service life of the transmission mechanism, and avoid the risk of sudden failure.

[0059] 4. In the present application, by integrating a multi-stage voice alarm module, when the system abnormality is monitored, the audible and visual alarm strategy is executed according to the fault level, so that the operator can quickly locate the hidden dangers such as voltage drop and harmonic over-standard, timely correct the waveform abnormality in the braking stage, and ensure the safety and controllability of the entire elevator operation process. BRIEF DESCRIPTION OF DRAWINGS

[0060] Figure 1 is a schematic diagram of the overall system architecture of the present application. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0062] Please refer to Figure 1 The frequency conversion driving system for elevator control, the system includes a dynamic speed control end, a voltage frequency coordination end and a harmonic suppression management end, the dynamic speed control end, the voltage frequency coordination end and the harmonic suppression management end are connected to a multi-stage voice alarm module;

[0063] The dynamic speed control end obtains passenger flow data in real time through the car thermal detector and the floor call, generates an elevator speed dynamic control curve in combination with a historical operation database, automatically sets an acceleration conversion critical point in a multi-story stopping scenario, controls the acceleration change rate within a safety threshold through an optimization algorithm, and triggers a frequency reducer command when an abnormal acceleration mutation is detected;

[0064] The voltage frequency coordination end monitors current and bus voltage in real time through the inverter and the voltage sensor, dynamically adjusts the start-stop stage PWM waveform through closed-loop control, and ensures that torque fluctuation is less than 5% of the rated value.

[0065] The harmonic suppression management end detects high-order harmonic components in the frequency converter output in real time through the embedded spectrum analyzer and the vibration sensor, establishes a carrier frequency and harmonic distortion correlation model, automatically reduces the carrier frequency proportional coefficient and activates the transient voltage protection circuit when identifying that the 11th and 13th characteristic harmonic amplitudes exceed the standard;

[0066] The multi-level voice alarm module performs three-level response: broadcast light voice when voltage drops by more than 10%; broadcast medium voice when voltage is greater than 15% and harmonic exceeds; broadcast voice and flash red light to alarm when voltage is greater than 20%.

[0067] S1, collect track geometry static waveform data M by static detection equipment carried by track inspection vehicle, and collect track geometry dynamic waveform data N by dynamic detection equipment carried by track inspection vehicle; wherein M represents a track geometry shape parameter set with track mileage parameter as coordinate axis in non-traveling state, and N represents a track geometry shape parameter set with track mileage parameter as coordinate axis in traveling state;

[0068] S2, identify the sampling frequency of M and N in the track supervision platform by using bidirectional search algorithm, generate track geometry static waveform frequency data M pinlv , and track geometry dynamic waveform frequency data N pinlv ;

[0069] S3, compare M pinlv and N pinlv : if the frequencies are the same, execute S5; if the frequencies are different, execute S4;

[0070] S4, adjust M pinlv to be consistent with N pinlv by using linear interpolation algorithm, generate track geometry static waveform adjustment data M tiaozheng ;

[0071] S5, align M or M tiaozheng and N with mileage parameter as reference system, construct track geometry static and dynamic waveform combined data

[0072] S6. Establish a standard waveform combination matrix W corresponding to different track mileage calibration algorithms = (w1, ..., w h ,…,w θ ), based on the Osprey optimization algorithm, K and w h Perform matching to generate target track mileage calibration algorithm type feature data G;

[0073] S7. Combine K and G to construct track mileage calibration summary data R, call the calibration program corresponding to G to process R, and generate track geometry dynamic waveform calibration data G. dongtai .

[0074] S1 specifically includes:

[0075] S11. Static detection equipment includes a laser rangefinder and an inclination sensor to measure track parameters, track gauge parameters and horizontal position parameters;

[0076] S12. Dynamic detection equipment includes gyroscopes, accelerometers, laser rangefinders and inclination sensors to collect track deformation data in real time during driving.

[0077] The bidirectional search algorithm in S2 is executed as follows:

[0078] Use "sampling frequency" as the keyword to traverse the metadata of the track supervision platform and locate the frequency identification field in the waveform file header.

[0079] The frequency consistency judgment logic of S3 is:

[0080] |M pinlv -N pinlv If the frequency is less than 0.1Hz, the frequencies are considered the same; otherwise, they are considered different.

[0081] S4's linear interpolation algorithm satisfies:

[0082]

[0083] Among them, m(x i ) is the value of the original static waveform at the i-th sampling point, x is the target interpolation position, x i is the position of the i-th sampling point.

[0084] The standard waveform combination matrix W in S6 contains 9 algorithm types, specifically:

[0085] Principal point iterative correction algorithm, improved DTW algorithm, chord measurement value conversion and comparison algorithm and their combination algorithm.

[0086] The Osprey optimization algorithms in S6 include:

[0087] S621, initialize the Osprey position

[0088] Li，θ = t + r x (η - t)

[0089] wherein t, η are search space boundaries;

[0090] S622, explore stage updates position

[0091] L' i，θ = L i，θ + r x (μ - v x L i，θ )

[0092] wherein μ is target position vector; v is constant with value 1, 2;

[0093] fitness °' i，θ is greater than ° i，θ then replace position;

[0094] S623, development stage calculates new position

[0095]

[0096] °" i，θ is greater than ° i，θ then update position;

[0097] S624, iteratively execute S622 to S623 until maximum iteration number T is reached,

[0098] S625, output optimal w h corresponding algorithm type identifier G.

[0099] The calculation formula of fitness ° is:

[0100]

[0101] wherein n is waveform data point number.

[0102] The orbit mileage calibration processing in S7 includes:

[0103] Extract the dynamic and static waveform feature difference of the same mileage interval, fit the mileage offset based on the least square method and correct N.

[0104] Embodiment 1: Passenger flow response operation of dynamic speed control end

[0105] In the early morning peak operation of the wind power tower cylinder elevator, the thermal sensor in the car detects that 6 maintenance personnel enter in real time, the floor call button receives 4 stop instructions of different height platforms at the same time, and the dynamic speed control end generates a speed control curve based on the historical passenger flow database: in the first floor to 50 meters height interval, the starting strategy with gentle acceleration slope is adopted, uniform speed is maintained in 50-100 meters height, and hierarchical deceleration program is started 30 meters in advance when approaching the target platform.

[0106] By optimizing the acceleration rate in real time, the motor starting current under full load is reduced, the impact load on the mechanical gear box is effectively weakened, and the maintenance personnel feedback that the car has no obvious jerk feeling throughout the journey. The temperature rise of the transmission system is reduced by 40% compared with the traditional power frequency drive.

[0107] Example 2: Heavy load starting control of voltage frequency coordination end

[0108] When the elevator carries the fan blade accessories weighing 800 kg upwards, the voltage sensor monitors the instantaneous voltage drop trend of the bus, and the current detection module identifies abnormal fluctuations in the three-phase current of the motor. The voltage frequency coordination end immediately activates the closed-loop control mechanism: dynamically adjusts the pulse width and frequency of the inverter PWM waveform according to the load torque, and increases the voltage compensation during the starting stage to maintain stable output torque.

[0109] At the same time, through the SVPWM modulation reconstruction technology, the carrier sequence is reorganized to ensure that the motor maintains uniform speed climbing under heavy load conditions. During the entire upward process, the motor does not appear the phenomenon of sudden speed drop of traditional power frequency drive, the energy consumption is reduced by about 35% compared with the old system, and the accessory transportation efficiency is improved by 50%.

[0110] Example 3: Harmonic suppression management end and sound-light alarm linkage

[0111] Strong convection weather causes voltage fluctuation of power grid, and the frequency conversion coordination end identifies that the 23th harmonic amplitude in the inverter output frequency spectrum exceeds the standard, and the mechanical vibration sensor detects abnormally high frequency oscillation. The harmonic suppression management end immediately executes three-level response: first, reduce the carrier frequency proportional coefficient to weaken the harmonic energy, and simultaneously activate the transient voltage protection circuit to absorb the surge current.

[0112] When the voltage drop exceeds 15%, the multi-level voice alarm module triggers the high-frequency flashing of the red LED lamp group on the top of the car, and broadcasts Chinese voice: "Power grid anomaly! Start protection mode", the operation and maintenance personnel locate the fault according to the sound-light alarm, and switch to the standby power supply through manual intervention during the braking stage, avoiding the sliding accident of the car due to voltage drop.

[0113] Example 4: Light load energy saving regulation and control of voltage frequency coordination end

[0114] During the routine equipment inspection period at night, the elevator only carries 1 maintenance personnel upwards, and the voltage frequency coordination end detects the light load state in real time and automatically switches to the low-power consumption operation mode: dynamically reduces the inverter output voltage frequency through closed-loop regulation technology to maintain the motor speed in the economic interval.

[0115] At the same time, the dynamic speed control end adjusts the acceleration curve to a gentle slope, avoiding unnecessary torque output in the no-load working condition. The "light load energy consumption" phenomenon of the traditional power frequency system does not occur throughout the operation. The power supply of the lighting and ventilation system in the car remains stable. The maintenance personnel confirm that the elevator landing accuracy is not deviated. The electric energy metering device shows that the energy consumption of a single operation is reduced by more than 40% compared with the historical average.

[0116] Example 5: EMI blocking of harmonic suppression management end

[0117] When the high-power converter equipment in the tower cylinder starts, the frequency coordination end detects that the amplitude of the 11th and 13th characteristic harmonics increases sharply, causing the motor winding temperature rise alarm. The harmonic suppression management end immediately starts the double protection mechanism:

[0118] The carrier frequency proportional coefficient is dynamically reduced, and the PWM waveform sequence is reorganized to offset the high-frequency harmonic energy;

[0119] The transient voltage protection circuit absorbs the voltage spikes caused by electromagnetic interference;

[0120] The synchronous activation of the voice alarm module broadcasts: "electromagnetic interference! Harmonic suppression in progress". The maintenance personnel observe the harmonic distortion rate returning to the normal threshold within 3 seconds through the monitoring screen. The motor temperature rise trend is stopped. This incident did not trigger the emergency brake, and the elevator completed the vertical transportation task of 12 tons of materials as planned that day.

[0121] Example 6: Comprehensive protection of multiple modules working together to cope with extreme working conditions

[0122] During the strong typhoon invasion of the offshore wind farm, the tower cylinder elevator faces multiple extreme working conditions: the tower body swing amplitude exceeds the design threshold, the grid voltage drops by 25%, the emergency evacuation instruction requires personnel to be transferred within 90 seconds at a height of hundreds of meters. The dynamic speed control end first activates the anti-sway running mode: based on the real-time data of the tower top inclination sensor, the acceleration curve is reconstructed, and a 0.5-second dynamic stop buffer period is automatically inserted in the peak value interval of the tower body swing, so that the car always maintains a displacement tolerance of 5 cm in the vertical direction. When the four maintenance personnel enter the car with first aid equipment, the system detects that the total load exceeds the 1100kg design limit. The voltage frequency coordination end immediately executes the threefold protection mechanism:

[0123] Switch to backup diesel generator set power supply, complete power seamless switching within 200ms;

[0124] According to the load gravity distribution, automatically distribute the output torque of the four traction motors;

[0125] Enable the brake energy feedback device to convert the downward potential energy into upward auxiliary power;

[0126] When ascending to 40 meters, the harmonic suppression management end detects the 19th harmonic resonance caused by the diesel engine group, and the instantaneous trigger carrier frequency proportional coefficient is adaptively adjusted. Through the injection of reverse harmonic current, electromagnetic oscillation is offset, and the voice alarm module starts the exclusive evacuation broadcast: "extreme weather operation, please hold the handrail". Finally, in the strong wind environment, it completes the 100-meter lifting with a smooth acceleration of 0.3 m / s 2 The operation and maintenance center data record shows that:

[0127] The maximum torque fluctuation is controlled within 4.8% of the rated value;

[0128] The temperature rise of the key transmission components does not exceed the safety threshold;

[0129] The emergency evacuation time is improved by 58% compared with the traditional system.

[0130] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual such relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0131] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable frequency drive system for elevator control, characterized by: The system includes a dynamic speed control terminal, a voltage-frequency coordination terminal, and a harmonic suppression management terminal, which are connected to a multi-level voice alarm module. The dynamic speed control terminal obtains passenger flow data in real time through the car thermal detector and floor call device, generates a dynamic speed control curve for the elevator based on the historical operation database, automatically sets the acceleration conversion critical point in the multi-layer docking scenario, controls the acceleration change rate within the safety threshold through the optimization algorithm, and triggers the inverter frequency reduction command when an abnormal acceleration mutation is detected; The voltage-frequency coordination terminal monitors the current and bus voltage in real time through the inverter and voltage sensor, and uses closed-loop control to dynamically adjust the PWM waveform during the start-stop phase to ensure that the torque fluctuation is less than 5% of the rated value. The harmonic suppression management terminal uses an embedded spectrum analyzer and vibration sensor to detect high-order harmonic components in the inverter output in real time, establishes a carrier frequency and harmonic distortion correlation model, and automatically reduces the carrier frequency proportional coefficient and activates the transient voltage protection circuit when it is identified that the 11th and 13th characteristic harmonic amplitudes exceed the standard. The multi-level voice alarm module implements three-level response: when the voltage drops more than 10%, a mild voice is played; when the voltage exceeds 15% and the harmonics exceed, a moderate voice is played; when the voltage exceeds 20%, a voice is played and a red light flashes as an alarm.

2. The variable frequency drive system for elevator control according to claim 1, characterized in that: S1. Collecting track geometry static waveform data M using static detection equipment on a track inspection vehicle, and collecting track geometry dynamic waveform data N using dynamic detection equipment on a track inspection vehicle; where M represents a set of track geometry parameters with track mileage parameters as coordinate axes when the vehicle is not in operation, and N represents a set of track geometry parameters with track mileage parameters as coordinate axes when the vehicle is in operation; S2. Use a bidirectional search algorithm to identify the sampling frequencies of M and N in the track supervision platform and generate track geometry static waveform frequency data M pinlv and track geometry dynamic waveform frequency data N pinlv ; S3, compare M pinlv With N pinlv :If the frequencies are the same, execute S5; if they are different, execute S4; S4, use linear interpolation algorithm to pinlv Adjust to N pinlv Consistent, generate track geometry static waveform adjustment data M tiaozheng ; S5. Align M and M using mileage parameters as reference system. tiaozheng With N, construct track geometry static and dynamic waveform combined data S6. Establish a standard waveform combination matrix W corresponding to different track mileage calibration algorithms = (w1, ...w h ,…,w θ ), based on the Osprey optimization algorithm, K and w h Perform matching to generate target track mileage calibration algorithm type feature data G; S7. Combine K and G to construct track mileage calibration summary data R, call the calibration program corresponding to G to process R, and generate track geometry dynamic waveform calibration data G. dongtai .

3. The variable frequency drive system for elevator control according to claim 2, characterized in that: Said S1 specifically includes: S11. Static detection equipment includes a laser rangefinder and an inclination sensor to measure track parameters, track gauge parameters and horizontal position parameters; S12. Dynamic detection equipment includes gyroscopes, accelerometers, laser rangefinders and inclination sensors to collect track deformation data in real time during driving.

4. The variable frequency drive system for elevator control according to claim 2, characterized in that: The execution mode of the bidirectional search algorithm in S2 is: Use "sampling frequency" as the keyword to traverse the metadata of the track supervision platform and locate the frequency identification field in the waveform file header.

5. The variable frequency drive system for elevator control according to claim 1, characterized in that: The frequency consistency judgment logic of S3 is: |M pinlv -N pinlv If the frequency is less than 0.1Hz, the frequencies are considered the same; otherwise, they are considered different.

6. The variable frequency drive system for elevator control according to claim 2, characterized in that: The linear interpolation algorithm of S4 satisfies: Among them, M(x i ) is the value of the original static waveform at the i-th sampling point, x is the target interpolation position, x i is the position of the i-th sampling point.

7. The variable frequency drive system for elevator control according to claim 2, characterized in that: The standard waveform combination matrix W in S6 includes 9 algorithm types, specifically: Principal point iterative correction algorithm, improved DTW algorithm, chord measurement value conversion and comparison algorithm and their combination algorithm.

8. The variable frequency drive system for elevator control according to claim 2, characterized in that: The Osprey optimization algorithm in S6 includes: S621, initialize the Osprey position L i，θ =t+r×(η-t) Where t and η are the search space boundaries; S622, update position during exploration phase The i，θ =L i，θ +r×(μ-v×L i，θ ) Where μ is the target position vector; v is a constant with values ​​of 1 or 2; Fitness ◇′ i，θ Greater than ◇ i，θ Then replace the position; S623, Calculate new position during development phase ◇″ i，θ Greater than ◇ i，θ Then update the position; S624, iterate S622 to S623 until the maximum number of iterations T is reached, S625, output optimal w h The corresponding algorithm type identifier G.

9. The variable frequency drive system for elevator control according to claim 8, characterized in that: The calculation formula of the fitness ◇ is: Where n is the number of waveform data points.

10. The variable frequency drive system for elevator control according to claim 2, characterized in that: The track mileage calibration process in S7 includes: Extract the dynamic and static waveform feature differences in the same mileage interval, fit the mileage offset based on the least squares method, and correct N.

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