CN106087619A - A kind of invariable power steel rail grinding system - Google Patents
A kind of invariable power steel rail grinding system Download PDFInfo
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- CN106087619A CN106087619A CN201610571156.4A CN201610571156A CN106087619A CN 106087619 A CN106087619 A CN 106087619A CN 201610571156 A CN201610571156 A CN 201610571156A CN 106087619 A CN106087619 A CN 106087619A
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- Prior art keywords
- polishing motor
- downforce
- output
- polishing
- rail
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
- E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding
Abstract
The invention discloses a kind of invariable power steel rail grinding system, this system includes control unit, proportioning valve, hydraulic system, polishing motor and the grinding stone being arranged on rail grinding machine.Polishing motor drives grinding stone to press on rail under the control of hydraulic system, abrasive stones contact makes the output of polishing motor change after rail, and control unit controls the output of polishing motor by the downforce controlling hydraulic system applying extremely polishing motor.The output of polishing motor feeds back to control unit, control unit is according to given target power, and the output of polishing motor, the downforce of hydraulic system applying extremely polishing motor is adjusted by controlling the electric current of proportioning valve, constant to realize polishing motor output in rail grinding machine moves bruting process.The present invention can solve the problem that existing polishing system is easily formed small echo long wave mill, the rail rail level out-of-flatness after polishing, the technical problem that rail level error can not eliminate well in bruting process.
Description
Technical field
The present invention relates to railway track measurement technical field, especially relate to a kind of invariable power being applied to rail grinding machine
Steel rail grinding system.
Background technology
After rail line opens operation, the rail as line tower foundation parts is severe, complicated by being chronically at
In environment, due to dynamic action, the natural environment of train, and the factor such as the difference of the quality of rail own, rail produces trauma
Situation happen occasionally.Typical rail defects and failures, such as: the phenomenon such as crackle, abrasion, will directly contribute the minimizing of rail life, with
Time rail maintenance work amount and maintenance cost all will be significantly increased, in some instances it may even be possible to can badly influence track traffic driving operation
Safety.Therefore, it is necessary in time the trauma of rail is eliminated or repaired, could avoid to greatest extent affecting track traffic
The accident of safe operation occurs.
In the middle of prior art, take various different pattern to high-speed railway steel for different types of steel rail defect
The undaform abrasion (the rugged waveform of rail surface wears away, and is called for short ripple mill) of rail, rail lip, saddle-shape abrasion, weldering
The diseases such as seam depression and fish scale crackle implement quickly polishing, to eliminate Rail Surface irregularity, rail head surface defect.Meanwhile, will
Rail head contour recovery is to designing requirement, thus slows down the further development of rail surface defects, improves the smoothness of Rail Surface,
With further up to improving traveller's comfort level, reducing wheel track noise and extend the purpose in rail service life.
Rail grinding machine is the important railway engineering plant equipment of rail maintenance, is mainly used in entering the various defects of rail
Row polishing.Introducing from external from the nineties in last century, all imports of its control system, inlet system cost is the highest, and control
Algorithmic technique processed completely closes off domestic, and accessory is expensive simultaneously and safeguards low-response.And in the middle of prior art, beat for rail
The polishing control method of mill car substantially has constant pressure control method and presses down stroke control method two types.Both approaches
Small-sized sanding apparatus uses extensively, but for large-scale polishing vehicle, due to hydraulic system response speed, enforcement division
The factors such as part structure influence, its polishing control mode can not meet standard and the requirement of actual railway steel rail polishing the most completely.With
Time, constant pressure control method and down pressure stroke control method easily form small echo long wave mill, due to rail in bruting process
The difference of concrete circuit abrasion, uses the rail rail level irregularity degree after constant voltage polishing control mode not disappeared well
Remove.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of invariable power steel rail grinding system, it is possible to solve existing polishing
System is easily formed small echo long wave mill during steel rail grinding, due to the difference of rail concrete circuit abrasion, causes rail rail level
The technical problem that can not be eliminated very well of irregularity degree.
In order to realize foregoing invention purpose, the present invention specifically provides the technology of a kind of invariable power steel rail grinding system and realizes
Scheme, a kind of invariable power steel rail grinding system, including: the control unit that is arranged on rail grinding machine, proportioning valve, hydraulic pressure system
System, polishing motor and grinding stone.
Described polishing motor drives described grinding stone to press on described rail under the control of described hydraulic system, described mill
Stone makes the output of described polishing motor change after touching rail, described control unit is by controlling hydraulic system
The downforce applying extremely described polishing motor controls the output of described polishing motor.
The output of described polishing motor feeds back to described control unit, and described control unit is according to given target merit
Rate, and the output of described polishing motor, control the applying of described hydraulic system extremely by adjusting the electric current of described proportioning valve
The downforce of described polishing motor, moves the output work in bruting process at described rail grinding machine realizing described polishing motor
Rate is constant.
Preferably, described control unit include the power P ID controlling unit being sequentially connected, downforce calculate link and under press
Power PID controlling unit.Described power P ID controlling unit controls the given target power of computer and described polishing electricity according to polishing
The output of machine actual feedback carries out PID calculating, and described downforce calculates link and exports according to described power P ID controlling unit
Result of calculation calculate to lower pressure.Described downforce PID controlling unit calculates link output according to described downforce
To lower pressure, and the actual feedback of downforce carries out PID calculating, obtains the electric current of output extremely described proportioning valve, passes through
The electric current adjusting described proportioning valve controls the downforce of described hydraulic system applying extremely described polishing motor, regulates described beating with this
The output of electric mill machine.
Preferably, described power P ID controlling unit carries out PID calculating according to below equation:
ΔPn=KP1*ΔPn+KI1*ΔPn-1+KD1*ΔPn-2；
ΔPn=P* n-Pn-1；
ΔPn-1=P* n-1-Pn-2；
ΔPn-2=P* n-2-Pn-3；
Wherein, KP1For scale parameter, KI1For integral parameter, KD1For differential parameter, Δ PnMesh for n-th polishing motor
Mark power P* nReal output P with (n-1)th polishing motorn-1Difference, Δ Pn-1It it is the target of (n-1)th polishing motor
Power P* n-1Real output P with the n-th-2 times polishing motorsn-2Difference, Δ Pn-2It it is the target of the n-th-2 times polishing motors
Power P* n-2Real output P with the n-th-3 times polishing motorsn-3Difference.
Preferably, described downforce calculates link and carries out downforce calculating according to below equation:
ΔNn=f1(Pn)*ΔPn；
Wherein, Δ NnFor n-th hydraulic system to lower pressure N* nActual downforce with (n-1)th hydraulic system
Nn-1Difference, f1(Pn) it is with the real output P of n-th polishing motornPower Fuzzy Calculation function for variable.
Preferably, described downforce PID controlling unit carries out PID calculating according to below equation:
ΔNn=KP2*ΔNn+KI2*ΔNn-1+KD2*ΔNn-2；
ΔNn=N* n-Nn-1；
ΔNn-1=N* n-1-Nn-2；
ΔNn-2=N* n-2-Nn-3；
Wherein, KP2For scale parameter, KI2For integral parameter, KD2For differential parameter, Δ Nn-1It is (n-1)th hydraulic system
To lower pressure N* n-1Actual downforce N with the n-th-2 times hydraulic systemsn-2Difference, Δ Nn-2It is the n-th-2 times hydraulic systems
To lower pressure N* n-2Actual downforce N with the n-th-3 times hydraulic systemsn-3Difference.
Preferably, in mobile bruting process, the travel speed of described rail grinding machine keeps constant.
By implementing the technical scheme of the invariable power steel rail grinding system that the invention described above provides, there is following useful effect
Really:
(1) technical problem of small wavelength undaform abrasion, same hour hands it are easily formed during the present invention solves steel rail grinding
The abrasion difference of circuit concrete to rail, it is possible to eliminate the irregularity degree of rail rail level well；
(2) present invention uses polishing motor actual output current and combines power of motor characteristic as real output,
And define high-precision power control closed loop, not only substantially increase system response time, and it is difficult to solve practical grinding amount
To measure the technical problem forming closed loop control；
(3) present invention has broken the block of external correlation technique, controls parts for polishing in rail maintenance maintenance field
Production domesticization provides guarantee comprehensively, makes equipment cost be substantially reduced simultaneously, and safeguards fast response time, has adapted to reality admirably
The standard of border railway steel rail polishing and requirement.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described.It should be evident that the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other embodiment is obtained according to these accompanying drawings.
Fig. 1 is the structural principle schematic diagram of invariable power a kind of detailed description of the invention of steel rail grinding system of the present invention；
Fig. 2 is the control structure block diagram of invariable power a kind of detailed description of the invention of steel rail grinding system of the present invention；
Fig. 3 is the structure composition frame of control unit in invariable power a kind of detailed description of the invention of steel rail grinding system of the present invention
Figure；
In figure: 1-control unit, 2-proportioning valve, 3-hydraulic system, 4-polishes motor, 5-grinding stone, 6-rail grinding machine, 7-
Rail, 11-power P ID controlling unit, 12-downforce calculates link, 13-downforce PID controlling unit.
Detailed description of the invention
For the sake of quoting and understanding, by the technical term being used below, write a Chinese character in simplified form or abridge and be described below:
PID controls: the abbreviation that ratio (Proportion)-integration (Integral)-differential (Derivative) controls.
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is carried out clear, complete description.Obviously, described embodiment is only
It is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under not making creative work premise, broadly falls into the model of present invention protection
Enclose.
As shown in accompanying drawing 1 to accompanying drawing 3, give the specific embodiment of invariable power steel rail grinding system of the present invention, below knot
The invention will be further described to close the drawings and specific embodiments.
As shown in Figures 1 and 2, the specific embodiment of a kind of invariable power steel rail grinding system, including: it is arranged on rail
Control unit 1, proportioning valve 2, hydraulic system 3, polishing motor 4 and grinding stone 5 on grinding machine 6.Control unit 1 is exported by control
To the electric current of proportioning valve 2, adjust the downforce that hydraulic system 3 applies.It is provided with grinding stone 5, by polishing motor on polishing motor 4
4 drive grinding stone 5 to polish rail 7.
Polishing motor 4 drives grinding stone 5 to press on rail 7, after grinding stone 5 touches rail 7 under the control of hydraulic system 3
The output of motor 4 of making to polish changes, and control unit 1 applies to polishing motor 4 times by controlling hydraulic system 3
Pressure controls the output of polishing motor 4.
The output of polishing motor 4 feeds back to control unit 1, the given target power of control unit 1, and according to beating
The output of electric mill machine 4, controls the downforce of hydraulic system 3 applying extremely polishing motor 4 by adjusting the electric current of proportioning valve 2,
Constant with the output that realization polishing motor 4 moves in bruting process at rail grinding machine 6.The actual output of polishing motor 4
Power is by gathering the output voltage of polishing motor 4 and electric current, and by calculated.Invariable power steel rail grinding system is straight
Connect and gather the actual electric power of final polishing execution unit polishing motor 4 and as controlling target, algorithmically realize closing
Ring controls.Meanwhile, invariable power steel rail grinding system uses the output controlling polishing motor 4 constant, ensures polishing operation
Stable operation effectiveness.
As shown in Figure 3, control unit 1 farther includes power P ID controlling unit 11, the downforce calculating being sequentially connected
Link 12 and downforce PID controlling unit 13.Power P ID controlling unit 11 controls, according to polishing, the target power that computer is given
Carrying out PID calculating with the output of polishing motor 4 actual feedback, downforce calculates link 12 according to power P ID controlling unit
The result of calculation of 11 outputs calculates to lower pressure.Target power by operator for different circuits, rail defects and failures class
Type, and the polishing situation such as type rule of thumb gives, and controlled computer by polishing and be given.Downforce PID controlling unit 13
According to downforce calculate link 12 output to lower pressure, and the actual feedback of downforce carries out PID calculating, obtains defeated
Go out the electric current to proportioning valve 2, control the downforce of hydraulic system 3 applying extremely polishing motor 4 by adjusting the electric current of proportioning valve 2,
The output of polishing motor 4 is regulated with this.Wherein, the actual feedback of downforce can come from but is not limited to proportioning valve 2 and goes out
The force value of hydraulic fluid port, and the force value of hydraulic system 3 output, the position etc. of piston rod.
It is in invariable power steel rail grinding system for realizing the control unit 1 of polishing pressurized control PID regulation algorithm
Core status.The control parameter of control unit 1 goes out downforce according to given power Fuzzy Calculation, by regulating the defeated of proportioning valve 2
Go out to realize downforce regulation, and by feedback polishing motor 4 output calculate actual downforce and to lower pressure it
Between difference, go forward side by side traveling one step joint.Control unit 1 includes two Closed Loop Control Units, and big closed loop PID is adjusted to target merit
Rate regulates with the PID of output, and little closed loop PID is adjusted to downforce regulation, and conversion between the two uses fuzzy algorithmic approach list
Unit, and regulated in real time by pid algorithm, formula 1 is the fundamental formular of power P ID algorithm, and formula 2 is downforce pid algorithm
Fundamental formular, formula 3 is the Fuzzy Calculation fundamental formular between downforce and output.
Power P ID controlling unit 11 carries out PID calculating according to below equation:
ΔPn=KP1*ΔPn+KI1*ΔPn-1+KD1*ΔPn-2；Formula 1
ΔPn=P* n-Pn-1；
ΔPn-1=P* n-1-Pn-2；
ΔPn-2=P* n-2-Pn-3；
Wherein, KP1For the scale parameter in pid algorithm, it is called for short P parameter；KI1For the integral parameter in pid algorithm, it is called for short I
Parameter；KD1For the differential parameter in pid algorithm, it is called for short D parameter；ΔPnTarget power P for n-th polishing motor 4* nWith n-th-
The real output P of 1 polishing motor 4n-1Difference；ΔPn-1It is the target power P of (n-1)th polishing motor 4* n-1With
The real output P of n-2 polishing motor 4n-2Difference；ΔPn-2It is the target power P of the n-th-2 times polishing motors 4* n-2With
The real output P of the n-th-3 times polishing motors 4n-3Difference.
Downforce PID controlling unit 13 carries out PID calculating according to below equation:
ΔNn=KP2*ΔNn+KI2*ΔNn-1+KD2*ΔNn-2；Formula 2
ΔNn=N* n-Nn-1；
ΔNn-1=N* n-1-Nn-2；
ΔNn-2=N* n-2-Nn-3；
Wherein, KP2For the scale parameter in pid algorithm, it is called for short P parameter；KI2For the integral parameter in pid algorithm, it is called for short I
Parameter；KD2For the differential parameter in pid algorithm, it is called for short D parameter；ΔNn-1Be (n-1)th hydraulic system 3 to lower pressure
N* n-1Actual downforce N with the n-th-2 times hydraulic systems 3n-2Difference；ΔNn-2Be the n-th-2 times hydraulic systems 3 give fix pressure
Power N* n-2Actual downforce N with the n-th-3 times hydraulic systems 3n-3Difference；ΔNnCorresponding to certain proportioning valve 2 current increment,
It is the electric current of this proportioning valve 2 plus current increment on the basis of the electric current of previous output to proportioning valve 2.
Downforce calculates link 12 and carries out downforce calculating according to below equation:
ΔNn=f1(Pn)*ΔPn；Formula 3
Wherein, Δ NnFor n-th hydraulic system 3 to lower pressure N* nActual downforce with (n-1)th hydraulic system 3
Nn-1Difference；f1(Pn) it is with the real output P of n-th polishing motor 4nDownforce Fuzzy Calculation function for variable.
Downforce Fuzzy Calculation function f1(Pn) can obtain according to steel rail grinding empirical data, i.e. according to a large amount of rail accumulated before
Polishing optimization data are fitted thus obtain Δ NnWith Δ PnBetween functional relationship.
Polishing motor 4 in invariable power steel rail grinding system presses on rail 7 under the oil cylinder of hydraulic system 3 controls,
Grinding stone 5 contact rail 7 after polish motor 4 output change.Invariable power steel rail grinding system is defeated with polishing motor 4
Going out power is major control target, and the electric current adjusting control proportioning valve 2 realizes the power invariability in polishing operation moving process.Permanent
The target that power polishing controls is the output of polishing motor 4, and polishing motor 4 is controlled downforce, polishing electricity by hydraulic system 3
The output of machine 4 relation proportional to downforce, in the present embodiment use fuzzy algorithmic approach unit, to output and under press
Power calculates in real time.Invariable power steel rail grinding system of the present invention uses the Based Intelligent Control controlling electrical system based on steel rail grinding
Algorithm unit, carries out PID according to the target power output returned actual with polishing motor 4 that polishing control computer provides
Calculate, the output of regulation hydraulic system 3, flat with reach between the output of target power and polishing motor 4 actual feedback
Weighing apparatus.
As one of the present invention preferably specific embodiment, in mobile bruting process, the travel speed of rail grinding machine 6
Keep constant.Rail grinding machine 6, while using polishing motor 4 power limitation control, is also entered by invariable power steel rail grinding system
Row fixed speed control, improves the quality of steel rail grinding operation further.
The specific embodiment of a kind of invariable power steel rail grinding method based on said system, comprises the following steps:
S10: control unit 1 applies to the downforce of polishing motor 4 to control motor 4 of polishing by controlling hydraulic system 3
Output；
S11: polishing motor 4 drives grinding stone 5 to press on rail 7 under the control of hydraulic system 3, and grinding stone 5 touches steel
The output making polishing motor 4 after rail 7 changes；
S12: the output of polishing motor 4 feeds back to control unit 1, control unit 1 according to given target power, with
And the output of polishing motor 4, apply the pressure down to motor 4 of polishing by the electric current control hydraulic system 3 adjusting proportioning valve 2
Power is constant with the output that realization polishing motor 4 moves in bruting process at rail grinding machine 6.
As one of the present invention preferably specific embodiment, in mobile bruting process, the travel speed of rail grinding machine 6
Keep constant, i.e. rail grinding machine 6 is carried out fixed speed control, so can optimize the effect of steel rail grinding further.
Control unit 1 farther includes power P ID controlling unit 11, downforce calculates link 12 and downforce PID controls
Link 13, control unit 1 is according to given target power, and the output of polishing motor 4, adjusts hydraulic system 3 and applies
The extremely process of the downforce of polishing motor 4 further includes steps of
It is actual with polishing motor 4 that S120: power P ID controlling unit 11 controls the given target power of computer according to polishing
The output of feedback carries out PID calculating；
The result of calculation that S121: downforce calculating link 12 exports according to power P ID controlling unit 11 calculates to fixing
Pressure；
S122: downforce PID controlling unit 13 according to downforce calculate link 12 output to lower pressure, and under press
The actual feedback of power carries out PID calculating, obtains exporting the electric current to proportioning valve 2, controls liquid by adjusting the electric current of proportioning valve 2
Pressure system 3 applies the downforce to motor 4 of polishing, and regulates the output of polishing motor 4 with this.
Power P ID controlling unit 11 carries out PID calculating according to below equation:
ΔPn=KP1*ΔPn+KI1*ΔPn-1+KD1*ΔPn-2；
ΔPn=P* n-Pn-1；
ΔPn-1=P* n-1-Pn-2；
ΔPn-2=P* n-2-Pn-3；
Wherein, KP1For scale parameter, KI1For integral parameter, KD1For differential parameter, Δ PnMesh for n-th polishing motor 4
Mark power P* nReal output P with (n-1)th polishing motor 4n-1Difference, Δ Pn-1It it is the mesh of (n-1)th polishing motor 4
Mark power P* n-1Real output P with the n-th-2 times polishing motors 4n-2Difference, Δ Pn-2It is the n-th-2 times polishing motors 4
Target power P* n-2Real output P with the n-th-3 times polishing motors 4n-3Difference.
Downforce calculates link 12 and carries out downforce calculating according to below equation:
ΔNn=f1(Pn)*ΔPn；
Wherein, Δ NnFor n-th hydraulic system 3 to lower pressure N* nActual downforce with (n-1)th hydraulic system 3
Nn-1Difference, f1(Pn) it is with the real output P of n-th polishing motor 4nDownforce Fuzzy Calculation function for variable.
Downforce PID controlling unit 13 carries out PID calculating according to below equation:
ΔNn=KP2*ΔNn+KI2*ΔNn-1+KD2*ΔNn-2；
ΔNn=N* n-Nn-1；
ΔNn-1=N* n-1-Nn-2；
ΔNn-2=N* n-2-Nn-3；
Wherein, KP2For scale parameter, KI2For integral parameter, KD2For differential parameter, Δ Nn-1It is (n-1)th hydraulic system 3
To lower pressure N* n-1Actual downforce N with the n-th-2 times hydraulic systems 3n-2Difference, Δ Nn-2It is the n-th-2 times hydraulic pressure systems
System 3 to lower pressure N* n-2Actual downforce N with the n-th-3 times hydraulic systems 3n-3Difference.
The actual influence factor of steel rail grinding effect is a lot, as vehicle driving fixed speed control, hydraulic system response speed with
Perform precision etc., but the factor acting directly on rail 7 and directly affecting polishing quality is exactly the actual output of motor 4 of polishing
Power.Substantial amounts of actual tests data show, under conditions of other factors all can meet very well, use control accuracy to do
To best polishing motor 4 output power, it is achieved invariable power polishing controls, it is possible to the steel rail grinding reaching optimal controls effect
Really.The reality that the actual output current using polishing motor 4 power characteristic combining polishing motor 4 obtain polishing motor 4 is defeated
Go out power, solve practical grinding amount and be difficult to measure and formed the technical problem of closed loop control.The specific embodiment of the invention describes
Invariable power steel rail grinding system can be not only used for common railway rail grinding machine, it is also possible to for rail of subway grinding machine etc.
Relevant rail maintenance equipment.
By implementing the technical scheme of invariable power steel rail grinding system that the specific embodiment of the invention describes, it is possible to reach as
Lower technique effect:
(1) the invariable power steel rail grinding system that the specific embodiment of the invention describes is easily formed during solving steel rail grinding
The technical problem of small wavelength undaform abrasion, is simultaneous for the abrasion difference of the concrete circuit of rail, it is possible to eliminate rail well
The irregularity degree of rail level；
(2) the invariable power steel rail grinding system that the specific embodiment of the invention describes uses polishing motor actual output current also
In conjunction with power of motor characteristic as real output, and define high-precision power and control closed loop, not only substantially increase and be
System response speed, and solve practical grinding amount and be difficult to measure the technical problem forming closed loop control；
(3) the invariable power steel rail grinding system that the specific embodiment of the invention describes has broken the block of external correlation technique,
The production domesticization comprehensively controlling parts for polishing in rail maintenance maintenance field provides guarantee, makes equipment cost significantly drop simultaneously
Low, and safeguard fast response time, adapt to standard and the requirement of actual railway steel rail polishing admirably.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment, identical similar portion sees mutually.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction.Though
So the present invention discloses as above with preferred embodiment, but is not limited to the present invention.Any it is familiar with those skilled in the art
Member, in the case of without departing from the spirit of the present invention and technical scheme, may utilize in method and the technology of the disclosure above
Hold and technical solution of the present invention is made many possible variations and modification, or be revised as the Equivalent embodiments of equivalent variations.Therefore,
Every content without departing from technical solution of the present invention, according to the present invention technical spirit to made for any of the above embodiments any simply
Amendment, equivalent, equivalence change and modification, all still fall within the scope of technical solution of the present invention protection.
Claims (6)
1. an invariable power steel rail grinding system, it is characterised in that including: be arranged on the control unit on rail grinding machine (6)
(1), proportioning valve (2), hydraulic system (3), polishing motor (4) and grinding stone (5)；
Described polishing motor (4) drives described grinding stone (5) to press to described rail (7) under the control of described hydraulic system (3)
On, described grinding stone (5) makes the output of described polishing motor (4) change after touching rail (7), described control is single
Unit (1) applies to the downforce of described polishing motor (4) to control described polishing motor by controlling described hydraulic system (3)
(4) output；
The output of described polishing motor (4) feeds back to described control unit (1), and described control unit (1) basis gives
Target power, and the output of described polishing motor (4), control described liquid by adjusting the electric current of described proportioning valve (2)
Pressure system (3) applies the downforce to described polishing motor (4), to realize described polishing motor (4) at described rail grinding machine
(6) output in bruting process is moved constant.
Invariable power steel rail grinding system the most according to claim 1, it is characterised in that: described control unit (1) includes depending on
Secondary connected power P ID controlling unit (11), downforce calculate link (12) and downforce PID controlling unit (13)；Described merit
Rate PID controlling unit (11) controls the given target power of computer and described polishing motor (4) actual feedback according to polishing
Output carries out PID calculating, and described downforce calculates the meter that link (12) exports according to described power P ID controlling unit (11)
Calculate result to calculate to lower pressure；It is defeated that described downforce PID controlling unit (13) calculates link (12) according to described downforce
Go out to lower pressure, and the actual feedback of downforce carries out PID calculating, obtains output to the electricity of described proportioning valve (2)
Stream, controls the pressure down of described hydraulic system (3) applying extremely described polishing motor (4) by adjusting the electric current of described proportioning valve (2)
Power, regulates the output of described polishing motor (4) with this.
Invariable power steel rail grinding system the most according to claim 2, it is characterised in that described power P ID controlling unit
(11) PID calculating is carried out according to below equation:
ΔPn=KP1*ΔPn+KI1*ΔPn-1+KD1*ΔPn-2；
ΔPn=P* n-Pn-1；
ΔPn-1=P* n-1-Pn-2；
ΔPn-2=P* n-2-Pn-3；
Wherein, KP1For scale parameter, KI1For integral parameter, KD1For differential parameter, Δ PnTarget for n-th polishing motor (4)
Power P* nReal output P with (n-1)th polishing motor (4)n-1Difference, Δ Pn-1It is (n-1)th polishing motor (4)
Target power P* n-1Real output P with the n-th-2 times polishing motors (4)n-2Difference, Δ Pn-2It is the n-th-2 times polishing electricity
The target power P of machine (4)* n-2Real output P with the n-th-3 times polishing motors (4)n-3Difference.
Invariable power steel rail grinding system the most according to claim 3, it is characterised in that described downforce calculates link (12)
Downforce calculating is carried out according to below equation:
ΔNn=f1(Pn)*ΔPn；
Wherein, Δ NnFor n-th hydraulic system (3) to lower pressure N* nActual downforce with (n-1)th hydraulic system (3)
Nn-1Difference, f1(Pn) it is with the real output P of n-th polishing motor (4)nDownforce Fuzzy Calculation letter for variable
Number.
Invariable power steel rail grinding system the most according to claim 4, it is characterised in that described downforce PID controlling unit
(13) PID calculating is carried out according to below equation:
ΔNn=KP2*ΔNn+KI2*ΔNn-1+KD2*ΔNn-2；
ΔNn=N* n-Nn-1；
ΔNn-1=N* n-1-Nn-2；
ΔNn-2=N* n-2-Nn-3；
Wherein, KP2For scale parameter, KI2For integral parameter, KD2For differential parameter, Δ Nn-1It is (n-1)th hydraulic system (3)
To lower pressure N* n-1Actual downforce N with the n-th-2 times hydraulic systems (3)n-2Difference, Δ Nn-2It is the n-th-2 times hydraulic pressure systems
System (3) to lower pressure N* n-2Actual downforce N with the n-th-3 times hydraulic systems (3)n-3Difference.
Invariable power steel rail grinding system the most according to any one of claim 1 to 5, it is characterised in that: in mobile polishing
During, the travel speed of described rail grinding machine (6) keeps constant.
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| CN106873639A (en) * | 2017-02-22 | 2017-06-20 | 株洲时代电子技术有限公司 | A kind of steel rail grinding deflection angle control method |
| CN108000248A (en) * | 2017-12-07 | 2018-05-08 | 浙江盛达物联科技股份有限公司 | A kind of invariable power grinding processing method |
| CN108103864A (en) * | 2017-12-06 | 2018-06-01 | 株洲时代电子技术有限公司 | A kind of steel rail grinding motor falls rail control parameter setting method |
| CN110629606A (en) * | 2019-09-30 | 2019-12-31 | 北京东风电器有限公司 | Pneumatic control system and control method for steel rail grinding train |
| CN114406876A (en) * | 2022-01-25 | 2022-04-29 | 中国铁建高新装备股份有限公司 | Steel rail polishing flexible feeding device and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106873639A (en) * | 2017-02-22 | 2017-06-20 | 株洲时代电子技术有限公司 | A kind of steel rail grinding deflection angle control method |
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| CN108000248B (en) * | 2017-12-07 | 2019-10-08 | 浙江盛达物联科技股份有限公司 | A kind of invariable power grinding processing method |
| CN110629606A (en) * | 2019-09-30 | 2019-12-31 | 北京东风电器有限公司 | Pneumatic control system and control method for steel rail grinding train |
| CN110629606B (en) * | 2019-09-30 | 2024-02-13 | 北京东风电器有限公司 | Pneumatic control system and control method for rail grinding train |
| CN114406876A (en) * | 2022-01-25 | 2022-04-29 | 中国铁建高新装备股份有限公司 | Steel rail polishing flexible feeding device and control method |
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