CN101650556B - Control method for reducing mechanical impact in converter tilting system and control device thereof - Google Patents
Control method for reducing mechanical impact in converter tilting system and control device thereof Download PDFInfo
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- CN101650556B CN101650556B CN2009101712040A CN200910171204A CN101650556B CN 101650556 B CN101650556 B CN 101650556B CN 2009101712040 A CN2009101712040 A CN 2009101712040A CN 200910171204 A CN200910171204 A CN 200910171204A CN 101650556 B CN101650556 B CN 101650556B
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Abstract
The invention provides a control method for reducing the mechanical impact in a converter tilting system and a control device thereof. The method comprises the following steps: receiving a running instruction and establishing a static electromagnetic torque of an electric motor; judging whether the static electromagnetic torque is normal or not, if normal, starting up an external brake to open a signal and starting up a tilting frequency converter to enable the electric motor to run, otherwise, carrying out fault checking and resetting; monitoring the current rotating speed of the electric motor in real time in the state that the electric motor runs; receiving a stop instruction and calculating the time of the electric motor from rotating to stopping according to the current rotating speed of the electric motor; and when the time is reached, starting the external brake to close the signal, and stopping the tilting frequency converter to enable the electric motor to stop running. Therefore, the impact of the kinetic energy of a converter on a twisting lever of the electric motor is reduced; overlarge impact on a mechanical system, which is generated when the converter tilting system is started up and stopped, is avoided; the safe production is ensured; and the service life of the mechanical system is prolonged.
Description
Technical field
The present invention relates to the control technology of converter tilting system, relate in particular to a kind of control method and control device thereof that in converter tilting system, alleviates physical shock.
Background technology
As shown in Figure 1; Existing converter tilting system comprises PLC (Programmable Logic Controller; Programmable logic controller (PLC)) 1, braking brake 3, two principal and subordinate's tilting frequency converter groups that tilting frequency converter constitutes 2, two principal and subordinate's motor unit that motor constitutes 4, two shaft couplings 5 and converters 6; Wherein, PLC 1 is used for controlling through control principal and subordinate's tilting frequency converter group 2 and braking brake 3 state (the general DeviceNet of employing agreement is carried out communication between PLC 1 and the principal and subordinate's tilting frequency converter group 2) of principal and subordinate's motor unit 4; The output of principal and subordinate's tilting frequency converter group 2 is used for starting principal and subordinate's motor unit 4, and principal and subordinate's motor unit 4 is rigidly connected through shaft coupling 5 and drives converter 6 work.
When converter tilting system starts; Because PLC 1 has not just opened braking brake 3 when confirming also whether principal and subordinate's motor unit 4 has set up the static electromagnetic torque; If converter 6 this moment is not in zero-bit; Can there be certain potential energy in itself, thereby converter 6 rotation voluntarily will produce violent physical shock when setting up when static electromagnetic is changeed principal and subordinate's motor unit 4 operations of distance back.When converter 6 tilting systems stop; Because converter 6 itself has very big kinetic energy when high speed is moved; And the very short time inside brake band-type brake 3 of PLC 1 after principal and subordinate's tilting frequency converter group 2 stops just to have been closed; Kinetic energy can only be released on the torsion bars of principal and subordinate's motor unit 4, can produce very big impact.Like this, if, will having a strong impact on the safety of production in starting and excessive to the impact of mechanical system when stopping, converter tilting system carries out the serviceable life with mechanical system.
Summary of the invention
The object of the present invention is to provide a kind of control method and control device thereof that in converter tilting system, alleviates physical shock; To reduce converter tilting system impact to mechanical system when starting and stopping; The safety that guarantees production is carried out the serviceable life of prolonged mechanical system.
For achieving the above object, one aspect of the present invention provides a kind of control method that in converter tilting system, alleviates physical shock, may further comprise the steps:
Receive the running instruction, set up the static electromagnetic of motor and change distance;
Judge that said static electromagnetic changes apart from whether normal,, then start the braking brake opening signal, start tilting frequency converter if normal, said motor operation, otherwise, carry out fault detect and reset;
Under said motoring, monitor the current rotating speed of said motor in real time;
Receive halt instruction, according to the current velocity gauge of said motor calculate said motor from said rotating speed to the static required time;
When arriving said time, start the braking brake shutdown signal, stop said tilting frequency converter, stop the operation of said motor.
The control method that in converter tilting system, alleviates physical shock of the present invention, said reception running instruction is set up the static electromagnetic of motor and is changeed distance, specifically comprises:
Whether monitoring receives said running instruction under said motor stationary state, if receive said running instruction, then set up said static electromagnetic and change distance, otherwise, continue monitoring and whether receive said running instruction.
This control method that in converter tilting system, alleviates physical shock, the said motor principal and subordinate's motor unit that at least two motor are formed of serving as reasons, the said tilting frequency converter principal and subordinate's tilting frequency converter group that at least two tilting frequency converter are formed of serving as reasons; Said principal and subordinate's motor unit is corresponding with said principal and subordinate's tilting frequency converter group, saidly judges that static electromagnetic changes apart from whether normal, if normal; Then start the braking brake opening signal; Start tilting frequency converter, said motor operation, otherwise; Carry out fault detect and reset, specifically comprise:
The static electromagnetic commentaries on classics of judging the motor whether number of preestablishing is arranged in said principal and subordinate's motor unit if having, then starts the braking brake opening signal apart from normal; Start said principal and subordinate's tilting frequency converter group; The operation of said principal and subordinate's motor unit, otherwise, carry out fault detect and reset.
This control method that in converter tilting system, alleviates physical shock, the said current rotating speed of said motor of under motoring, monitoring in real time specifically comprises:
Under said principal and subordinate's motor unit running status, monitor the current output frequency of said principal and subordinate's tilting frequency converter group in real time.
On the other hand, the present invention also provides a kind of control device that in converter tilting system, alleviates physical shock, comprising:
Electromagnetic torque is set up module, is used for when under the motor stationary state, receiving the running instruction, sets up the static electromagnetic of motor and changes distance;
The start-up control module is used to judge that said electromagnetic torque sets up the static electromagnetic that module sets up and change apart from whether normal, if normal, then starts the braking brake opening signal, starts tilting frequency converter, starts said motor, otherwise, carry out fault detect and reset;
The monitor speed module is used for monitoring the current rotating speed of said motor when real-time under said motoring;
Rest time computing module, the current velocity gauge of said motor that obtains according to said monitor speed module when being used under said motoring, receiving halt instruction calculate said motor from said rotating speed to the static required time;
Static control module is used for when arriving the time that said rest time, computing module calculated, starting the braking brake shutdown signal, stops said tilting frequency converter, stops the operation of said motor.
On the other hand, the present invention also provides a kind of control device that in converter tilting system, alleviates physical shock, comprising:
Electromagnetic torque is set up module, is used for monitoring running instruction under the motor stationary state, when receiving the running instruction, sets up the static electromagnetic of motor and changes distance;
The start-up control module is used to judge that said electromagnetic torque sets up the static electromagnetic that module sets up and change apart from whether normal, if normal, then starts the braking brake opening signal, starts tilting frequency converter, starts said motor, otherwise, carry out fault detect and reset;
The monitor speed module is used under said motoring, monitoring in real time the current rotating speed of said motor;
Rest time computing module; Be used for monitoring halt instruction under said motoring; When receiving said halt instruction, the current velocity gauge of said motor that obtains according to said monitor speed module calculate said motor from said rotating speed to the static required time;
Static control module is used for when arriving the time that said rest time, computing module calculated, starting the braking brake shutdown signal, stops said tilting frequency converter, stops the operation of said motor.
The control device that in converter tilting system, alleviates physical shock of the present invention; The said motor principal and subordinate's motor unit that at least two motor are formed of serving as reasons; The said tilting frequency converter principal and subordinate's tilting frequency converter group that at least two tilting frequency converter are formed of serving as reasons, said principal and subordinate's motor unit is corresponding with said principal and subordinate's tilting frequency converter group.
In the controlling schemes that in converter tilting system, alleviates physical shock of the present invention: when starting; After PLC confirms the normal foundation of static electromagnetic torque; Discharge braking brake again; Thereby realized the smooth starting of tilting frequency converter, PLC monitors the output frequency of tilting frequency converter in real time simultaneously.When PLC obtains halt instruction; It will according to the current output frequency of tilting frequency converter calculate motor from current rotating speed to zero required time of rotating speed, i.e. best shut-in time of braking brake, and when this time arrives, start the braking brake shutdown signal; Thereby reduced of the impact of converter kinetic energy to the torsion bars of motor; Prevented that converter tilting system is excessive to the impact of mechanical system when starting and stopping, having guaranteed that the safety of production is carried out, prolonged the serviceable life of mechanical system.
Description of drawings
Fig. 1 is the structured flowchart of existing converter tilting system;
Fig. 2 alleviates the process flow diagram of the control method of physical shock in converter tilting system for the present invention;
Fig. 3 alleviates the structured flowchart of the control device of physical shock in converter tilting system for the present invention.
Embodiment
Be described in detail below in conjunction with the accompanying drawing specific embodiments of the invention:
The employing existing hardware block diagram shown in Figure 1 that in converter tilting system, alleviates the controlling schemes of physical shock of the present invention.With reference to figure 2, the control method that in converter tilting system, alleviates physical shock of the present invention may further comprise the steps:
Step S201, PLC monitor running instruction under principal and subordinate's motor unit stationary state of being made up of two motor, if receive the running instruction, and execution in step S202 then, otherwise, continue to carry out this step.
Step S202, PLC set up the static electromagnetic of principal and subordinate's motor unit changes distance.
Whether the static electromagnetic of principal and subordinate's motor unit that step S203, PLC judge to set up changes apart from normal, if normal, execution in step S204 then, otherwise, execution in step S204 '.
Step S204, PLC starts the braking brake opening signal, starts principal and subordinate's tilting frequency converter group of being made up of two tilting frequency converter, the operation of principal and subordinate's motor unit, execution in step S205 then.
Step S204 ', PLC carries out fault detect and resets.Principal and subordinate's motor unit of the present invention is carried out work with 1 main 3 from mode when operate as normal; When 1 motor fault wherein, except can carrying out fault detect and reset mode handle, also can adopt following mode to carry out work: promptly remaining 3 motor conversion adjustment back is carried out work with 1 main 2 from mode; Further, when 2 faults wherein, remaining 2 motor conversion adjustment back is carried out work with 1 main 1 from mode.
Step S205, PLC monitor the current output frequency of principal and subordinate's tilting frequency converter group in real time under principal and subordinate's motor unit running status, to obtain the current rotating speed of principal and subordinate's motor unit.
Step S206, PLC monitor running instruction under principal and subordinate's motor unit running status, if receive the running instruction, and execution in step S202 then, otherwise, continue to carry out this step.
Step S207, the PLC rotating speed (be principal and subordinate tilting frequency converter group current output frequency) current according to principal and subordinate's motor unit calculate principal and subordinate's motor unit from this rotating speed to the static required time.
Step S208, when the time arrived, PLC started the braking brake shutdown signal, stops principal and subordinate's tilting frequency converter group, stops the operation of principal and subordinate's motor unit.
With reference to figure 3; The control device that in converter tilting system, alleviates physical shock of the present invention comprises: electromagnetic torque is set up module 31, is used for monitoring running instruction under principal and subordinate's motor unit stationary state; When receiving the running instruction, set up the static electromagnetic of principal and subordinate's motor unit and change distance; Start-up control module 32 is used to judge that electromagnetic torque sets up the static electromagnetic that module 31 sets up and change apart from whether normal, if normal; Then start the braking brake opening signal, start principal and subordinate's tilting frequency converter group, thereby start principal and subordinate's motor unit; Otherwise, carry out fault detect and reset; Monitor speed module 33 is used under principal and subordinate's motor unit running status monitoring, the current rotating speed of principal and subordinate's motor unit in real time; Rest time, computing module 34; Be used under principal and subordinate's motor unit running status, monitoring halt instruction; When receiving halt instruction, the current velocity gauge of principal and subordinate's motor unit that obtains according to monitor speed module 33 calculate principal and subordinate's motor unit from this rotating speed to the static required time; Static control module 35 is used for when arriving the time that rest time, computing module 34 calculated, starting the braking brake shutdown signal, stops principal and subordinate's tilting frequency converter group, thereby stops the operation of principal and subordinate's motor unit.
In the controlling schemes that in converter tilting system, alleviates physical shock of the present invention: when starting; After PLC confirms the normal foundation of static electromagnetic torque; Discharge braking brake again; Thereby realized the smooth starting of tilting frequency converter, PLC monitors the output frequency of tilting frequency converter in real time simultaneously.When PLC obtains halt instruction; It will according to the current output frequency of tilting frequency converter calculate motor from current rotating speed to zero required time of rotating speed, i.e. best shut-in time of braking brake, and when this time arrives, start the braking brake shutdown signal; Thereby reduced of the impact of converter kinetic energy to the torsion bars of motor; Prevented that converter tilting system is excessive to the impact of mechanical system when starting and stopping, having guaranteed that the safety of production is carried out, prolonged the serviceable life of mechanical system.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
Above embodiment describes preferred implementation of the present invention; Be not that scope of the present invention is limited; Design under the prerequisite of spirit not breaking away from the present invention; Various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (6)
1. a control method that in converter tilting system, alleviates physical shock is characterized in that, may further comprise the steps:
Receive the running instruction, the static electromagnetic torque of setting up motor;
Judge whether said static electromagnetic torque is normal,, then start the braking brake opening signal, start tilting frequency converter if normal, said motor operation, otherwise, carry out fault detect and reset;
Under said motoring, monitor the current rotating speed of said motor in real time;
Receive halt instruction, according to the current velocity gauge of said motor calculate said motor from said rotating speed to the static required time;
When arriving said time, start the braking brake shutdown signal, stop said tilting frequency converter, stop the operation of said motor.
2. the control method that in converter tilting system, alleviates physical shock according to claim 1 is characterized in that, said reception running instruction, and the static electromagnetic torque of setting up motor specifically comprises:
Whether monitoring receives said running instruction under said motor stationary state, if receive said running instruction, then sets up said static electromagnetic torque, otherwise, continue monitoring and whether receive said running instruction.
3. the control method that in converter tilting system, alleviates physical shock according to claim 2 is characterized in that, the said motor principal and subordinate's motor unit that at least two motor are formed of serving as reasons; The said tilting frequency converter principal and subordinate's tilting frequency converter group that at least two tilting frequency converter are formed of serving as reasons, said principal and subordinate's motor unit is corresponding with said principal and subordinate's tilting frequency converter group, saidly judges whether the static electromagnetic torque is normal; If normal, then start the braking brake opening signal, start tilting frequency converter; Said motor operation; Otherwise, carry out fault detect and reset, specifically comprise:
The static electromagnetic torque of judging the motor whether number of preestablishing is arranged in said principal and subordinate's motor unit is normal, if having, then starts the braking brake opening signal; Start said principal and subordinate's tilting frequency converter group; The operation of said principal and subordinate's motor unit, otherwise, carry out fault detect and reset.
4. the control method that in converter tilting system, alleviates physical shock according to claim 3 is characterized in that, the said current rotating speed of said motor of under motoring, monitoring in real time specifically comprises:
Under said principal and subordinate's motor unit running status, monitor the current output frequency of said principal and subordinate's tilting frequency converter group in real time.
5. a control device that in converter tilting system, alleviates physical shock is characterized in that, comprising:
Electromagnetic torque is set up module, is used for receiving the running instruction, the static electromagnetic torque of setting up motor;
The start-up control module is used to judge whether said electromagnetic torque is set up the static electromagnetic torque that module sets up normal, if normal, then starts the braking brake opening signal, starts tilting frequency converter, starts said motor, otherwise, carry out fault detect and reset;
The monitor speed module is used under said motoring, monitoring in real time the current rotating speed of said motor;
Rest time, computing module was used to receive halt instruction, the current velocity gauge of said motor that obtains according to said monitor speed module calculate said motor from said rotating speed to the static required time;
Static control module is used for when arriving the time that said rest time, computing module calculated, starting the braking brake shutdown signal, stops said tilting frequency converter, stops the operation of said motor.
6. the control device that in converter tilting system, alleviates physical shock according to claim 5; It is characterized in that; The said motor principal and subordinate's motor unit that at least two motor are formed of serving as reasons; The said tilting frequency converter principal and subordinate's tilting frequency converter group that at least two tilting frequency converter are formed of serving as reasons, said principal and subordinate's motor unit is corresponding with said principal and subordinate's tilting frequency converter group.
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| CN2009101712040A CN101650556B (en) | 2009-08-25 | 2009-08-25 | Control method for reducing mechanical impact in converter tilting system and control device thereof |
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| CN2009101712040A CN101650556B (en) | 2009-08-25 | 2009-08-25 | Control method for reducing mechanical impact in converter tilting system and control device thereof |
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| CN101650556B true CN101650556B (en) | 2012-05-30 |
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| CN106406213A (en) * | 2016-08-31 | 2017-02-15 | 北京首钢自动化信息技术有限公司 | Frequency converter multi-machine master-slave control system and method |
| CN107641680A (en) * | 2017-10-27 | 2018-01-30 | 江苏永钢集团有限公司 | Converter body fascinates delay contracting control method |
| CN110883768B (en) * | 2018-09-07 | 2021-06-08 | 合肥欣奕华智能机器有限公司 | Band-type brake servo motor control method and device and robot |
| CN111896868B (en) * | 2020-06-24 | 2023-08-15 | 新兴铸管股份有限公司 | Motor current centralized monitoring and fault alarming system |
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