CN110703820A - Method and device for controlling oxygen lance cross sliding vehicle - Google Patents
Method and device for controlling oxygen lance cross sliding vehicle Download PDFInfo
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- CN110703820A CN110703820A CN201910846526.4A CN201910846526A CN110703820A CN 110703820 A CN110703820 A CN 110703820A CN 201910846526 A CN201910846526 A CN 201910846526A CN 110703820 A CN110703820 A CN 110703820A
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- oxygen lance
- frequency converter
- cross sliding
- sliding vehicle
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D13/00—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover
- G05D13/62—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover characterised by the use of electric means, e.g. use of a tachometric dynamo, use of a transducer converting an electric value into a displacement
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
- C21C5/462—Means for handling, e.g. adjusting, changing, coupling
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- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
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Abstract
The invention relates to a method and a device for controlling an oxygen lance cross sliding vehicle, wherein the method is applied to the device for controlling the oxygen lance cross sliding vehicle and comprises the following steps: the controller controls the frequency converter to output a first power voltage so as to control the motor to drive the oxygen lance cross sliding vehicle to run towards the converting position at a first preset speed; in the operation process of the oxygen lance cross sliding vehicle, when the controller detects that the output torque of the motor meets a first preset range, the controller controls the frequency converter to output a second power voltage, wherein the frequency of the second power voltage is smaller than that of the first power voltage, so that the motor drives the oxygen lance cross sliding vehicle to reduce the speed from a first preset speed to a second preset speed; when the controller detects the converting position information, the controller controls the frequency converter to output a third power supply voltage, so that the third preset degree of the oxygen lance cross sliding is 0, the enabling signal of the frequency converter is kept, and after the enabling signal is kept for a first preset time, a locking instruction for the oxygen lance cross sliding vehicle is generated, and the oxygen lance cross sliding vehicle is accurately positioned.
Description
Technical Field
The invention relates to the technical field of steel making, in particular to a method and a device for controlling an oxygen lance cross sliding vehicle.
Background
At present, two oxygen lances are arranged at a converter, and an oxygen lance traversing device corresponding to each oxygen lance simultaneously is arranged, wherein one oxygen lance is in use, the other oxygen lance is standby, the in-use oxygen lance means that the corresponding oxygen lance traversing device is at a converting position, and the standby oxygen lance means that the corresponding oxygen lance traversing device is at a standby position.
However, in the prior art, when a used oxygen lance is positioned, if the oxygen lance cross sliding device is locked when a sensor detects a signal reaching a converting position, the locking rod is stressed too much, the locking rod is damaged or bent, and the oxygen lance cross sliding device cannot be positioned accurately.
Therefore, how to ensure the accurate positioning and stable stopping of the oxygen lance traversing device is a technical problem to be solved at present.
Disclosure of Invention
In view of the above, the present invention has been developed to provide a method and apparatus for controlling a lance carriage that overcomes or at least partially solves the above-identified problems.
In one aspect, the embodiment of the invention provides a method for controlling an oxygen lance cross sliding vehicle, which is applied to a device for controlling the oxygen lance cross sliding vehicle, and the device comprises: a controller, a frequency converter and a motor; the method comprises the following steps:
the controller controls the frequency converter to output a first power voltage so as to control the motor to drive the oxygen lance cross sliding vehicle to move towards the converting position at a first preset speed;
in the operation process of the oxygen lance cross sliding vehicle, when the controller detects that the output torque of the motor meets a first preset range, the controller controls the frequency converter to output a second power voltage, wherein the frequency of the second power voltage is smaller than that of the first power voltage, so that the motor drives the oxygen lance cross sliding vehicle to reduce the speed from the first preset speed to a second preset speed;
when the controller detects converting position information, the controller controls the frequency converter to output a third power supply voltage so as to control a third preset speed of the motor driving the oxygen lance cross sliding vehicle to be 0, an enabling signal of the frequency converter is kept, and after the enabling signal is kept for a first preset time, a locking instruction for the oxygen lance cross sliding vehicle is generated so that the oxygen lance cross sliding vehicle is locked.
Further, after the controller controls a third power voltage output by the frequency converter to control the motor to drive the third preset speed of the oxygen lance cross-sliding vehicle to be 0, keeps an enable signal and maintains a first preset torque range, the method further comprises the following steps:
judging whether the converting position information is detected or not;
and when the converting position information is detected, generating a locking instruction for the oxygen lance cross sliding vehicle so as to lock the oxygen lance cross sliding vehicle.
Further, after determining whether the converting bit information is detected, the method further includes:
when the converting position information is not detected, controlling the frequency converter to output the second power supply voltage in the reverse direction, so that the motor drives the oxygen lance cross sliding vehicle to reversely run at the second preset speed;
in the process of reverse operation, if the controller detects the converting position information, the controller controls the frequency converter to output the third power voltage so as to control a third preset speed of the motor driving the oxygen lance cross carriage to be 0, an enabling signal of the frequency converter is kept, and after a second preset time is kept, a locking instruction for the oxygen lance cross carriage is generated so as to lock the oxygen lance cross carriage.
Further, after the controller controls the frequency converter to output a third power voltage to control a third preset speed of the motor to drive the oxygen lance cross-sliding vehicle to be 0, and keeps an enable signal of the frequency converter, and keeps a first preset torque range of the enable signal, the method further comprises the following steps:
and controlling the frequency converter to stop working.
Further, after the controller controls the frequency converter to output a first power voltage to control the motor to drive the oxygen lance cross sliding vehicle to run towards the ratchet wheel clamping track direction at a first preset speed, the method further comprises the following steps:
the controller judges whether the motor drives the oxygen lance cross sliding vehicle to move towards the ratchet wheel clamping track at a first preset speed for a time period which is longer than a third preset time period or not;
and when the current output torque is larger than the third preset time length, acquiring the current output torque of the motor, and judging whether the current output torque meets the first preset range.
On the other hand, the embodiment of the invention also provides a device for controlling the oxygen lance cross sliding vehicle, which comprises:
a controller, a frequency converter and a motor;
the controller is used for controlling the frequency converter to output a first power voltage so as to control the motor to drive the oxygen lance cross sliding vehicle to run towards the direction of a ratchet wheel clamping rail at a first preset speed, and the controller obtains the output torque of the motor as a first output torque through the frequency converter;
the controller is used for controlling the frequency converter to output a second power voltage when the controller determines that the current second output torque of the motor is greater than the first preset torque and the difference value between the second preset torque and the first preset torque is greater than a preset value in the operation process of the oxygen lance cross carriage, wherein the frequency of the second power voltage is less than that of the first power voltage, so that the motor drives the oxygen lance cross carriage to reduce the speed from the first preset speed to a second preset speed;
the controller is used for controlling the frequency converter to output a third power voltage when converting position information is detected so as to control the motor to drive a third preset speed 0 of the oxygen lance cross sliding vehicle, maintaining an enabling signal of the frequency converter, and generating a locking instruction for the oxygen lance cross sliding vehicle after the enabling signal is maintained for a first preset time length, so that the oxygen lance cross sliding vehicle is locked.
Further, the controller is also used for controlling a third power supply voltage output by the frequency converter to control a third preset speed of the motor for driving the oxygen lance cross carriage to be 0, keeping an enable signal and judging whether the converting position information is detected or not after maintaining a first preset time; and when the converting position information is detected, generating a locking instruction for the oxygen lance cross sliding vehicle so as to lock the oxygen lance cross sliding vehicle.
Further, the controller is also used for controlling the frequency converter to output the second power supply voltage in the reverse direction when the converting position information is not detected after judging whether the converting position information is detected or not, so that the motor drives the oxygen lance cross carriage to run in the reverse direction at the second preset speed;
in the process of reverse operation, if the controller detects the converting position information, the controller is further used for controlling the frequency converter to output the third power voltage so as to control a third preset speed of the motor driving the oxygen lance cross sliding vehicle to be 0, maintaining an enabling signal of the frequency converter, and generating a locking instruction for the young blue and green cross sliding vehicle after maintaining a second preset time length so as to lock the oxygen lance cross sliding vehicle.
Further, after the controller is configured to control the frequency converter to output a third power voltage to control the motor to drive a third preset speed 0 of the oxygen lance cross-sliding vehicle, and maintain an enable signal of the frequency converter, and maintain the enable signal for a first preset time, the controller is further configured to: and controlling the frequency converter to stop working.
Further, after the controller is used for controlling the frequency converter to output a first power voltage so as to control the motor to drive the oxygen lance cross-sliding vehicle to run towards the ratchet wheel clamping track direction at a first preset speed, the controller is further used for:
judging whether the time length of the motor driving the oxygen lance cross sliding vehicle to move to the ratchet wheel clamping rail at the first preset speed is longer than a third preset time length or not;
and when the current output torque is larger than the third preset time length, acquiring the current output torque of the motor, and judging whether the current output torque meets the first preset range.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
the invention provides a method for controlling an oxygen lance cross sliding vehicle, which is applied to the device summary for controlling the oxygen lance cross sliding vehicle, and the device comprises: the method comprises the following steps: the controller controls the frequency converter to output a first power voltage to control the motor to drive the oxygen lance cross sliding vehicle to run towards the converting position at a first preset speed, when the controller detects that the output torque of the motor meets a first preset range in the running process, the controller controls the frequency converter to output a second power voltage, the frequency of the second power voltage is smaller than the frequency of the first power voltage, so that the motor drives the oxygen lance cross sliding vehicle to reduce from the first preset speed to a second preset speed, when the controller detects a converting position signal, the controller controls the frequency converter to output a third power voltage to control the motor to drive the third preset speed of the oxygen lance cross sliding vehicle to be 0, an enabling signal of the frequency converter is kept, and after the enabling signal is kept for a first preset duration, a locking instruction of the oxygen lance cross sliding vehicle is generated to lock the oxygen lance cross sliding vehicle, because before the oxygen lance cross sliding vehicle reaches a ratchet wheel clamping track, make this oxygen lance sideslip car of motor drive move with high speed through the control to the converter, can improve the operating efficiency, simultaneously when the oxygen lance sideslip car reachs the ratchet card rail, through the control to the converter, make the speed that reduces motor drive oxygen lance sideslip car, move with low-speed, avoid this oxygen lance sideslip car because the condition that this converting position is surpassed easily to the speed is too fast, cause the location inaccurate, then, when detecting this converting position signal, the output third supply voltage of control converter, with the third preset speed of control motor drive oxygen lance sideslip car be 0, and after keeping the messenger enable signal of converter for the first preset duration, carry out the locking to the oxygen lance sideslip car, and then can effectively avoid the location sideslip car that causes inaccurate, the phenomenon that can't stably stop, and then realized the accurate positioning to the oxygen lance car.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic view of an embodiment of the present invention during operation of an oxygen lance cross-carriage;
FIG. 2 is a schematic flow chart illustrating the steps of a method for controlling a lance carriage in an embodiment of the present invention;
FIG. 3 is a schematic diagram of the structure of the device for controlling the oxygen lance cross-sliding carriage in the embodiment of the invention;
FIG. 4 is a schematic diagram illustrating the overall logic control steps for controlling the lance cross-over carriage in an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in FIG. 1, the embodiment of the invention is applicable to a scene comprising two oxygen lance cross traveling carriages 101, wherein the two oxygen lances are respectively positioned on the oxygen lance cross traveling carriages, one oxygen lance is an oxygen lance which is in use, and the other oxygen lance is a standby oxygen lance.
When the oxygen gun has a problem, the gun changing operation can be carried out, namely the oxygen gun cross sliding vehicle 101 at the converting position limit 102 is moved to the standby limit 103, and the oxygen gun cross sliding vehicle 101 at the standby limit 103 at the other end is moved to the converting limit 102. The gun changing operation is realized.
Example one
The embodiment of the invention provides a method for controlling an oxygen lance cross sliding vehicle, which is applied to a device for controlling the oxygen lance cross sliding vehicle, and the device comprises the following components: the device comprises a controller, a frequency converter and a motor, wherein the motor is used for driving wheels of the oxygen lance cross sliding vehicle. Wherein the controller is specifically a PLC (programmable logic controller).
The method specifically comprises the following steps as shown in figure 2: s201, a controller controls a frequency converter to output a first power voltage so as to control a motor to drive an oxygen lance cross sliding vehicle to move towards a converting position at a first preset speed;
s202, in the operation process of the oxygen lance cross sliding vehicle, when the controller detects that the output torque of the motor meets a first preset range, the controller controls the frequency converter to output a second power voltage, wherein the frequency of the second power voltage is smaller than that of the first power voltage, so that the motor drives the oxygen lance cross sliding vehicle to reduce the speed from a first preset speed to a second preset speed;
s203, when the controller detects converting position information, the controller controls the frequency converter to output a third power supply voltage so as to control the motor to drive the oxygen lance cross sliding vehicle to have a third preset speed of 0, keeps output of an enabling signal of the frequency converter, and generates a locking instruction for the oxygen lance cross sliding vehicle after keeping a first preset duration of the enabling signal so as to lock the oxygen lance cross sliding vehicle.
In a specific embodiment, when the oxygen lance cross sliding vehicles automatically change the lance operation, one oxygen lance cross sliding vehicle operates to the standby position, the other oxygen lance cross sliding vehicle operates to the converting position, ratchet wheel clamping rails are arranged on the way of operating to the converting position, and each oxygen lance cross sliding vehicle is provided with a ratchet wheel which is used for being matched with the ratchet wheel clamping rails. Thus, the lance carriage is carried during the operation of the oxygen lance to the converting site and comprises three stages, namely: before reaching the ratchet wheel clamping rail; and a second stage: before the controller on the ratchet wheel clamping rail receives the converting position signal; and the third stage, when a blowing bit signal is received.
First, in the first stage, since the track is smooth and has no any obstruction before reaching the ratchet wheel clamping rail, the oxygen lance cross-sliding vehicle runs smoothly in this stage, and therefore, S201 is executed, and the controller controls the frequency converter to output the first power voltage to control the motor to drive the oxygen lance cross-sliding vehicle to run in the blowing position direction at the first preset speed.
Specifically, the frequency converter can output a first power supply voltage of 40-60 Hz, so that the motor is controlled to drive the oxygen lance carriage to run at a high speed, the first preset speed is a relatively high speed, and the torque output by the motor runs smoothly at the moment, namely the torque output by the motor is 57-65% of the rated torque, namely 25-28 Nm.
Because the first mains voltage of controller control converter output makes electrode drive oxygen lance sideslip car move with rising to converting position direction for oxygen lance sideslip car moves fast, guarantees to trade the rifle fast.
After S201, the controller judges whether the motor drives the oxygen lance cross sliding vehicle to move to the ratchet wheel clamping rail at a first preset speed or not;
and when the current output torque is larger than the third preset time length, acquiring the current output torque of the motor, and judging whether the current output torque meets the first preset range.
Specifically, the third preset time period is specifically 6 s. When the oxygen lance cross sliding vehicle runs at a high speed for more than 6s, the output torques of the motors detected in real time are compared, so that the situation that the sudden change of the torque when the motors are started and the sudden change of the torque when the initial ratchet wheel runs is confused when the output torques of the motors are compared at the beginning can be avoided.
Then, it is necessary to determine whether the output torque of the motor satisfies the first preset range.
And then, in the second stage, S202, when the controller detects that the output torque of the motor meets the first preset range, the controller controls the frequency converter to output a second power supply voltage, wherein the frequency of the second power supply voltage is smaller than that of the first power supply voltage, so that the motor drives the oxygen lance cross sliding vehicle to reduce the speed from the first preset speed to a second preset speed.
The oxygen lance cross sliding vehicle is convenient to stop quickly when approaching a converting position by controlling the deceleration of the oxygen lance cross sliding vehicle.
The controller acquires that the output torque of the motor is suddenly increased from 57% -65% of the rated torque to 80% -90% of the rated torque, namely, the first preset range is 80% -90% of the rated torque. Thereby determining that the oxygen lance cross sliding vehicle reaches the ratchet wheel clamping rail, and at the moment, the oxygen lance cross sliding vehicle still runs forwards, but the running speed is reduced compared with that when the oxygen lance cross sliding vehicle does not reach the ratchet wheel clamping rail.
At this time, the controller controls the frequency of the second power voltage of the output of the inverter to be 15Hz, which is lower than the frequency of the first power voltage.
And thirdly, in the step S203, when the control detects the blowing position information, the controller controls the frequency converter to output a third power supply voltage so as to control a third preset speed of the motor driving the oxygen lance cross sliding vehicle to be 0, keeps an enabling signal of the frequency converter, and generates a locking instruction for the oxygen lance cross sliding vehicle after keeping the enabling signal for a first preset time so as to lock the oxygen lance cross sliding vehicle.
In the third stage, when the oxygen lance cross sliding vehicle runs on the ratchet wheel clamping rail, the controller detects that the blowing position information appears, and at the moment, the frequency converter is controlled to output a third power supply voltage, so that the running speed of the oxygen lance cross sliding vehicle is gradually reduced to 0 from the low speed in the second stage. Meanwhile, the controller needs to control the frequency converter to output an enabling signal so as to prevent the oxygen lance cross sliding trolley from sliding, and after the enabling signal is maintained for a first preset time period, namely the enabling signal is maintained for 2-3 s, the controller generates a locking instruction for the oxygen lance cross sliding trolley, so that the locking of the oxygen lance cross sliding trolley is realized.
After the controller controls the frequency converter to output a third power voltage to control the motor to drive a third preset speed of the oxygen lance cross sliding vehicle to be 0 and simultaneously controls the frequency converter to maintain a first preset duration of an enable signal, the method further comprises the following steps: and controlling the frequency converter to stop working.
When the frequency converter does not need to work, the frequency converter stops working in time, and energy can be effectively saved.
In the third phase, after the enable signal of the frequency converter is maintained for the first preset time period, the method further includes: judging whether converting position information is detected or not; and when the converting position information is detected, generating a locking instruction for the oxygen lance cross sliding vehicle so as to lock the oxygen lance cross sliding vehicle.
After judging whether the converting bit information is detected, the method further comprises the following steps: when the converting position information is not detected, controlling the frequency converter to output a second reverse power supply voltage so that the motor drives the oxygen lance cross sliding vehicle to reversely run at a second preset speed; in the reverse operation process, if the controller detects the converting position information, the controller controls the frequency converter to output a third power supply voltage, keeps an enabling signal of the frequency converter, and generates a locking instruction for the oxygen lance cross sliding vehicle after keeping a second preset time length so as to lock the oxygen lance cross sliding vehicle.
Because the controller does not detect the converting position information, the oxygen lance cross sliding vehicle is determined to exceed the converting position, in order to rapidly move the oxygen lance cross sliding vehicle back to the converting position, the operation of the oxygen lance cross sliding vehicle is controlled in a reverse direction, on one hand, the controller controls the frequency converter to output a reverse second power supply voltage so that the motor drives the oxygen lance cross sliding vehicle to reversely operate at a second preset speed, at the moment, the speed is reversely accelerated from 0 speed to reach low speed, when the controller detects the converting position information again, the speed is reduced, the controller controls the frequency converter to output a third power supply voltage so as to control a third preset speed of the motor driving the oxygen lance cross sliding vehicle to be 0, an enabling signal of the frequency converter is kept, and the second preset duration of the enabling signal is kept, wherein the second preset duration is 1-2 s, and then a locking instruction for the oxygen lance cross sliding vehicle is generated, so that the oxygen lance cross sliding vehicle is locked, and at the moment, the oxygen lance cross sliding vehicle moves back to the converting position from the position exceeding the converting position, thereby automatically realizing the accurate positioning of the oxygen lance cross sliding vehicle reaching the converting position.
The controller controls the output of the frequency converter, and the parameters of the frequency converter are set to be P554-B3100, P443-K3002 and P561-B3103, wherein P554 is the parameter of a start signal communicated by the frequency converter and the PLC, and B3100 is a start and stop command transmitted to the frequency converter by the PLC; p443 is the parameter setting of the speed of the frequency converter and the PLC, and K3002 is various speed set values transmitted to the frequency converter through the PLC; p561 is an enable signal for the inverter to communicate with the PLC, and B3103 is controlling the enable output and stop of the inverter by the PLC.
The method for controlling the oxygen lance cross sliding vehicle provided by the invention integrally comprises the following logic control steps, as shown in figure 4, the method comprises the following steps:
firstly, S401, when the controller receives a signal of automatically changing the gun, S402 is executed, the frequency converter is controlled to output a first power voltage, the frequency of the first power voltage is 50Hz, and the motor runs at a first preset speed; then executing S403, after 6S, the controller acquires the torque of the motor and compares the torque with a first preset torque; then, when the torque mutation of the motor is detected, namely the torque mutation is from 55% -70% of the rated torque to 80% -90% of the rated torque; s404 is executed, the frequency converter is controlled to output a second power supply voltage, and the speed of the motor is reduced to a second preset speed; then, S405 is executed, when the controller detects a converting position signal, the frequency converter is controlled to output a third power supply voltage so as to control a third preset speed of the motor driving the oxygen lance cross sliding vehicle to be 0, and meanwhile, an enable signal is maintained for 2S; and S406 is executed, and after 2S, if the blowing signal is still detected, the controller controls the frequency converter to stop working, the running signal stops at the same time, and the enabling signal also stops. If no converting signal is detected after 2 s; executing S407, and controlling the frequency converter to output a second reverse power supply voltage by the controller until a converting signal is detected; then, S408 is executed, the controller controls the frequency converter to output a third power supply voltage to control a third preset speed of the motor driving the oxygen lance cross sliding vehicle to be 0, so that the speed of the motor is reduced to 0, meanwhile, the frequency converter keeps an enable signal for 1S, and after 1S, the frequency converter is controlled to stop working, namely, the operation is stopped, and the enable signal is stopped.
Example two
Based on the same inventive concept, the embodiment of the invention provides a device for controlling an oxygen lance cross sliding vehicle, as shown in fig. 3, comprising:
a controller 301, a frequency converter 302 and a motor 303;
the controller 301 is used for controlling the frequency converter 302 to output a first power voltage so as to control the motor 303 to drive the oxygen lance cross carriage to move towards the ratchet wheel rail clamping direction at a first preset speed, and the controller 301 obtains an output torque of the motor 303 as a first output torque;
the controller 301 is configured to control the frequency converter 302 to output a second power voltage when the current second output torque of the motor 303 is greater than the first preset torque and the difference between the second preset torque and the first preset torque is greater than a preset value during the operation of the oxygen lance cross carriage, wherein the frequency of the second power voltage is less than the frequency of the first power voltage, so that the motor 303 drives the oxygen lance cross carriage to decelerate from the first preset speed to a second preset speed;
the controller 301 is configured to control the frequency converter 302 to output a third power voltage when the converting position information is detected, so as to control a third preset speed at which the motor drives the oxygen lance cross carriage to be 0, maintain an enable signal of the frequency converter 302, and generate a locking instruction for the oxygen lance cross carriage after maintaining a first preset duration of the enable signal, so as to lock the oxygen lance cross carriage.
In a preferred embodiment, the controller 301 is further configured to determine whether the converting position information is detected after controlling the third power voltage output by the frequency converter 302 to control a third preset speed of the motor driving the oxygen lance cross carriage to be 0, maintaining an enable signal, and maintaining for a first preset time period; and when the converting position information is detected, generating a locking instruction for the oxygen lance cross sliding vehicle so as to lock the oxygen lance cross sliding vehicle.
In a preferred embodiment, the controller 301 is further configured to control the frequency converter 302 to output the second power voltage in a reverse direction when the converting position information is not detected after determining whether the converting position information is detected, so that the motor 303 drives the oxygen lance cross carriage to run in a reverse direction at the second preset speed;
in the process of reverse operation, if the controller 301 detects the converting position information, the controller 301 is further configured to control the frequency converter 302 to output the third power voltage, so as to control a third preset speed at which the motor drives the oxygen lance cross-sliding vehicle to be 0, maintain an enable signal of the frequency converter 302, and generate a locking instruction for the oxygen lance cross-sliding vehicle after maintaining a second preset time period, so as to lock the oxygen lance cross-sliding vehicle.
In a preferred embodiment, after the controller 301 is configured to control the frequency converter 302 to output a third power voltage, control a third preset speed of the motor driving the lance cross-sliding carriage to be 0, maintain the enable signal of the frequency converter 302, and maintain the enable signal for a first preset time period, the controller is further configured to: and controlling the frequency converter 302 to stop working.
In a preferred embodiment, after the controller 301 is used for controlling the frequency converter 302 to output a first power voltage so as to control the motor 303 to drive the oxygen lance cross-sliding carriage to move towards the ratchet wheel rail clamping direction at a first preset speed, the controller is further used for:
judging whether the time length of the motor 303 driving the oxygen lance cross sliding vehicle to move to the ratchet wheel clamping rail at the first preset speed is greater than a third preset time length or not;
and when the current output torque is larger than the third preset time length, acquiring the current second output torque of the motor 303, and comparing the second output torque with the first torque.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
the invention provides a method for controlling an oxygen lance cross sliding vehicle, which is applied to the device summary for controlling the oxygen lance cross sliding vehicle, and the device comprises: the method comprises the following steps: the controller controls the frequency converter to output a first power voltage to control the motor to drive the oxygen lance cross sliding vehicle to run towards the converting position at a first preset speed, when the controller detects that the output torque of the motor meets a first preset range in the running process, the controller controls the frequency converter to output a second power voltage, the frequency of the second power voltage is smaller than the frequency of the first power voltage, so that the motor drives the oxygen lance cross sliding vehicle to reduce from the first preset speed to a second preset speed, when the controller detects a converting position signal, the controller controls the frequency converter to output a third power voltage to control the motor to drive the third preset speed of the oxygen lance cross sliding vehicle to be 0, an enabling signal of the frequency converter is kept, and after the enabling signal is kept for a first preset time, a locking instruction of the oxygen lance cross sliding vehicle is generated to lock the oxygen lance cross sliding vehicle, because before the oxygen lance cross sliding vehicle reaches the ratchet wheel and is stuck, the motor drives the oxygen lance cross sliding vehicle to run at a high speed through controlling the frequency converter, so that the running efficiency can be improved, and meanwhile, when the oxygen lance cross sliding vehicle reaches a ratchet wheel clamping rail, the speed of the motor driving the oxygen lance cross sliding vehicle is reduced through controlling the frequency converter, the motor driving the oxygen lance cross sliding vehicle runs at a low speed, the situation that the oxygen lance cross sliding vehicle easily exceeds a converting position due to the fact that the speed is too high is avoided, and the positioning is inaccurate.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for controlling an oxygen lance cross sliding vehicle is applied to a device for controlling the oxygen lance cross sliding vehicle, and the device comprises the following steps: a controller, a frequency converter and a motor; characterized in that the method comprises:
the controller controls the frequency converter to output a first power voltage so as to control the motor to drive the oxygen lance cross sliding vehicle to move towards the converting position at a first preset speed;
in the operation process of the oxygen lance cross sliding vehicle, when the controller detects that the output torque of the motor meets a first preset range, the controller controls the frequency converter to output a second power voltage, wherein the frequency of the second power voltage is smaller than that of the first power voltage, so that the motor drives the oxygen lance cross sliding vehicle to reduce the speed from the first preset speed to a second preset speed;
when the controller detects converting position information, the controller controls the frequency converter to output a third power supply voltage so as to control a third preset speed of the motor driving the oxygen lance cross sliding vehicle to be 0, an enabling signal of the frequency converter is kept, and after the enabling signal is kept for a first preset time, a locking instruction for the oxygen lance cross sliding vehicle is generated so that the oxygen lance cross sliding vehicle is locked.
2. The method as claimed in claim 1, wherein after the controller controls the third power voltage outputted from the frequency converter to control the third preset speed of the motor driving the lance cross-travelling carriage to be 0 and to maintain the enable signal for the first preset time period, the method further comprises:
judging whether the converting position information is detected or not;
and when the converting position information is detected, generating a locking instruction for the oxygen lance cross sliding vehicle so as to lock the oxygen lance cross sliding vehicle.
3. The method of claim 2, after determining whether the blow bit information is detected, further comprising:
when the converting position information is not detected, controlling the frequency converter to output the second power supply voltage in the reverse direction, so that the motor drives the oxygen lance cross sliding vehicle to reversely run at the second preset speed;
in the process of reverse operation, if the controller detects the converting position information, the controller controls the frequency converter to output the third power voltage so as to control a third preset speed of the motor driving the oxygen lance cross carriage to be 0, an enabling signal of the frequency converter is kept, and after a second preset time is kept, a locking instruction for the oxygen lance cross carriage is generated so as to lock the oxygen lance cross carriage.
4. The method as claimed in claim 1, wherein after the controller controls the frequency converter to output a third power voltage to control the motor to drive the lance cross-sliding carriage at a third preset speed of 0, and maintains the enable signal of the frequency converter for a first preset time period, the method further comprises:
and controlling the frequency converter to stop working.
5. The method as claimed in claim 1, wherein after the controller controls the frequency converter to output the first power voltage to control the motor to drive the oxygen lance cross-sliding vehicle to move towards the ratchet wheel clamping track direction at the first preset speed, the method further comprises:
the controller judges whether the motor drives the oxygen lance cross sliding vehicle to move towards the ratchet wheel clamping track at a first preset speed for a time period which is longer than a third preset time period or not;
and when the current output torque is larger than the third preset time length, acquiring the current output torque of the motor, and judging whether the current output torque meets the first preset range.
6. The utility model provides a device of control oxygen rifle sideslip car which characterized in that includes:
a controller, a frequency converter and a motor;
the controller is used for controlling the frequency converter to output a first power voltage so as to control the motor to drive the oxygen lance cross sliding vehicle to run towards the direction of a ratchet wheel clamping rail at a first preset speed, and the controller obtains the output torque of the motor as a first output torque through the frequency converter;
the controller is used for controlling the frequency converter to output a second power voltage when the controller determines that the current second output torque of the motor is greater than the first preset torque and the difference value between the second preset torque and the first preset torque is greater than a preset value in the operation process of the oxygen lance cross carriage, wherein the frequency of the second power voltage is less than that of the first power voltage, so that the motor drives the oxygen lance cross carriage to reduce the speed from the first preset speed to a second preset speed;
the controller is used for controlling the frequency converter to output a third power supply voltage when converting position information is detected so as to control a third preset speed of the motor driving the oxygen lance cross sliding vehicle to be 0, maintaining an enabling signal of the frequency converter, and generating a locking instruction for the oxygen lance cross sliding vehicle after maintaining the enabling signal for a first preset time length, so that the oxygen lance cross sliding vehicle is locked.
7. The apparatus as claimed in claim 6, wherein the controller is further configured to determine whether the blow position information is detected after controlling the third power voltage output by the frequency converter to control the third preset speed at which the motor drives the lance carriage to be 0, maintaining an enable signal, and maintaining for a first preset time period; and when the converting position information is detected, generating a locking instruction for the oxygen lance cross sliding vehicle so as to lock the oxygen lance cross sliding vehicle.
8. The apparatus as claimed in claim 7, wherein the controller is further configured to control the frequency converter to output the second power voltage in a reverse direction when the blow position information is not detected after determining whether the blow position information is detected, so that the motor drives the lance traverse carriage to run in a reverse direction at the second preset speed;
in the process of reverse operation, if the controller detects the converting position information, the controller is further used for controlling the frequency converter to output the third power voltage so as to control a third preset speed of the motor driving the oxygen lance cross sliding vehicle to be 0, maintaining an enabling signal of the frequency converter, and generating a locking instruction for the young blue and green cross sliding vehicle after maintaining a second preset time length so as to lock the oxygen lance cross sliding vehicle.
9. The apparatus as claimed in claim 6, wherein after the controller is configured to control the frequency converter to output a third power voltage for controlling the motor to drive the lance cross carriage at a third preset speed of 0, and to maintain the enable signal of the frequency converter, and to maintain the enable signal for a first preset time period, the apparatus is further configured to: and controlling the frequency converter to stop working.
10. The apparatus as claimed in claim 6, wherein after the controller is configured to control the frequency converter to output a first power voltage to control the motor to drive the lance carriage to move at a first preset speed in a ratchet track clamping direction, the apparatus is further configured to:
judging whether the time length of the motor driving the oxygen lance cross sliding vehicle to move to the ratchet wheel clamping rail at the first preset speed is longer than a third preset time length or not;
and when the current output torque is larger than the third preset time length, acquiring the current output torque of the motor, and judging whether the current output torque meets the first preset range.
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| CN201910846526.4A CN110703820B (en) | 2019-09-05 | 2019-09-05 | Method and device for controlling oxygen lance transverse trolley |
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| CN201910846526.4A CN110703820B (en) | 2019-09-05 | 2019-09-05 | Method and device for controlling oxygen lance transverse trolley |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113667795A (en) * | 2021-07-06 | 2021-11-19 | 首钢京唐钢铁联合有限责任公司 | Control method and device for transverse movement locking of oxygen lance of steel converter and industrial control equipment |
| CN115449587A (en) * | 2022-09-15 | 2022-12-09 | 首钢京唐钢铁联合有限责任公司 | Shutdown control method and system for converter oxygen lance traversing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005324882A (en) * | 2004-05-12 | 2005-11-24 | Toshiba Elevator Co Ltd | Elevator control device |
| CN103904976A (en) * | 2012-12-26 | 2014-07-02 | 株式会社安川电机 | Motor control apparatus and motor control method |
| US20160329849A1 (en) * | 2014-04-29 | 2016-11-10 | Mitsubishi Electric Corporation | Ac rotating machine control device and electric power steering device equipped with same |
| CN107743001A (en) * | 2017-09-27 | 2018-02-27 | 中国电力科学研究院 | Load simulation method, frequency converter, load simulator and starting of static frequency conversion system |
| US20190173407A1 (en) * | 2017-06-13 | 2019-06-06 | Zhongshan Broad-Ocean Motor Co., Ltd. | Method of starting sensorless bldc motor |
-
2019
- 2019-09-05 CN CN201910846526.4A patent/CN110703820B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005324882A (en) * | 2004-05-12 | 2005-11-24 | Toshiba Elevator Co Ltd | Elevator control device |
| CN103904976A (en) * | 2012-12-26 | 2014-07-02 | 株式会社安川电机 | Motor control apparatus and motor control method |
| US20160329849A1 (en) * | 2014-04-29 | 2016-11-10 | Mitsubishi Electric Corporation | Ac rotating machine control device and electric power steering device equipped with same |
| US20190173407A1 (en) * | 2017-06-13 | 2019-06-06 | Zhongshan Broad-Ocean Motor Co., Ltd. | Method of starting sensorless bldc motor |
| CN107743001A (en) * | 2017-09-27 | 2018-02-27 | 中国电力科学研究院 | Load simulation method, frequency converter, load simulator and starting of static frequency conversion system |
Non-Patent Citations (5)
| Title |
|---|
| 吕济深: "变频控制在AOD炉氧枪系统中的应用", 《山西冶金》 * |
| 吕济深: "变频控制在AOD炉氧枪系统中的应用", 《山西冶金》, no. 04, 30 August 2009 (2009-08-30) * |
| 吴再华;: "氧枪精确定位的实现", 控制工程, no. 1 * |
| 陈建国: "鄂钢转炉电控系统改造", 《武钢技术》 * |
| 陈建国: "鄂钢转炉电控系统改造", 《武钢技术》, no. 06, 30 December 1999 (1999-12-30), pages 7 - 10 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113667795A (en) * | 2021-07-06 | 2021-11-19 | 首钢京唐钢铁联合有限责任公司 | Control method and device for transverse movement locking of oxygen lance of steel converter and industrial control equipment |
| CN115449587A (en) * | 2022-09-15 | 2022-12-09 | 首钢京唐钢铁联合有限责任公司 | Shutdown control method and system for converter oxygen lance traversing device |
| CN115449587B (en) * | 2022-09-15 | 2024-03-19 | 首钢京唐钢铁联合有限责任公司 | Parking control method and system for converter oxygen lance traversing device |
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