CN104088939B - Gradient method and apparatus for detecting two-stage emergency braking time of disc brake - Google Patents
Gradient method and apparatus for detecting two-stage emergency braking time of disc brake Download PDFInfo
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Abstract
The invention relates to the technical field of mine elevators, and discloses a gradient method and an apparatus for detecting the two-stage emergency braking time of a disc brake. The gradient method comprises the steps of directly measuring each stage time of two-stage emergency braking according to the physical behaviour characteristics of the brake oil pressure of the two-stage emergency braking, continuously acquiring the oil pressure values of an oil pressure sensor by an acquisition card/PLC with a period T or a frequency f, and transmitting the oil pressure values to an industrial personal computer and a brake controller under the control of the brake controller; forming a two-stage emergency braking oil pressure course curve by the acquired oil pressure values by a computer, and measuring a process starting point time and an ending point time in the oil pressure course curve of the brake during each stage process of the two-stage emergency braking to meet the physical behaviour characteristics of each stage time of the two-stage emergency braking. Compared with the existing two-stage emergency braking time measurement, the gradient method and the apparatus disclosed by the invention have the advantages that the accuracy of measurement data is high, the error is low, the realization is convenient and simple, and without the need of adding any additional apparatus, and each stage time of the two-stage emergency braking can be accurately detected on line and in real time.
Description
Technical field
The present invention relates to mining elevator technical field, more particularly to a kind of detection disc type brake second order of measurement in real time
The gradient method and device of section brake hard time.
Background technology
Winder Disk Brake Hydraulic Station has two road binders pipes-A road binders pipe and B road binders pipes, and hydraulic oil is supplied in A road binders pipes
To all brakes on brake disc 7A, all brakes on hydraulic oil supply brake disc 7B, are promptly being made using the two-stage in B road binders pipes
In dynamic Winder Disk Brake, oil pressure in A road binders pipes during generation brake hard, abbreviation A pipes oil pressure is oily with B road binders pipes
Pressure, the change of abbreviation B pipe oil pressure is different, and A pipes oil pressure falls back to rapidly close 0 MPa residual voltages, the institute related to brake disc 7A
There is the normal pressure that damper brake is acted on brake disc 7A to reach maximum, and B pipes oil pressure becomes two stages that are divided into, the first stage declines
To a moderate oil pressure, continue one section of stabilization time --- a phase duration, then just falls back to close 0 MPa residual voltages.
Stable persistent period in one stage, can neither be too short for the braking effect important role that brake hard in well occurs, and
Can not be oversize, this is distinctly claimed in the industry, it is general to require to be not less than 8 seconds.
In the Hydraulic Station A roads using two-stage brake hard and B road binders pipes, an oil pressure sensor is respectively installed, carries
During rising, when producing brake hard, brake hard in well, under emergency brake signal effect, B pipes oil pressure presses two-stage process
Change, the normal pressure that all damper brakes of brake disc 7B are acted on brake disc 7B is also divided into the two-stage, just can become in second stage
For maximum.
A phase duration in two-stage brake hard is generally less than the n seconds, right when there is brake hard each time
B pipe oil pressure needs the oil pressure sensor data (n≤10 can be included whole two phase datas) for gathering the n seconds, altogether
10f sample frequency data constitute B pipe two-stage oil pressure course curves.
After n second B pipe oil pressure data acquisitions are complete, computer is according in real time forward gradient method calculates brake hard each time
The forward gradient of each point on B pipe oil pressure course curves, judges and finds out the sampled point sequence number of B, C, D and E point, thus calculates
The time in each stage.
After n second B pipe oil pressure data acquisitions are complete, computer can also calculate each less urgent according to real-time reverse gradient method
The reverse gradient of each point on the B pipe oil pressure course curves of braking, judges and finds out the sampled point sequence number of E, D, C and B point, by
This calculates the time in each stage.
At present measurement brake hard time disc type brake two-stage is typically using indirect mode measurement, it is impossible to completely and smart
Really reflect the physical behavio(u)r feature of each time of damper brake two-stage brake hard, degree of accuracy is relatively low, and error is larger, typically also needs
Want additional firmware facility.
The content of the invention
The purpose of the present invention is the weak point for existing disc type brake two-stage brake hard measure of time, there is provided
A kind of gradient method and device of brake hard time detection disc type brake two-stage for measuring in real time.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of gradient device of detection brake hard time disc type brake two-stage, including：On B road binders pipes
Oil pressure sensor 6B, capture card/PLC, industrial computer and gate control system, are distributed with N number of damper brake 2 in brake disc 7B,
Oil pressure sensor 6B is provided with the B road binders pipes of each oil cylinder 5 of flexible damper brake 2 connected with Hydraulic Station 11；Each B road binders pipe
On oil pressure sensor 6B be connected with industrial computer input by capture card/PLC first input ends；Industrial computer is exported
End is connected by gate control system with flexible damper brake 2, wherein the flexible signal of telecommunication of gate control system control damper brake 2 and collection
The inputs of card/PLC second are connected.
A kind of gradient method of detection brake hard time disc type brake two-stage, its step is as follows：
1）, set up two-stage brake hard oil pressure course curve, under gate control system control, capture card/PLC is with cycle T
Or the oil pressure value of oil pressure sensor 6B transmits computer on the individual B road binders pipe of frequency f continuous acquisition m (m=nf)；In disc type brake
During the brake hard of lock two-stage, the oil pressure value of the m B road binders pipe oil pressure sensor 6B for being gathered is built up braking by computer
The oil pressure course curve of lock two-stage brake hard；
Wherein, B points are one stage of two-stage brake hard transient process starting points in curve, and C points are promptly to make the two-stage
A dynamic stage transient process end point, is also one stage of two-stage brake hard steady-state process starting point, and D points are that the two-stage is urgent
A stage steady-state process end point is braked, is also two-stage brake hard two-stage transient process starting point, E points are that the two-stage is tight
Anxious braking two-stage transient process end point；
2）, according to two-stage brake hard oil pressure course curve is built up, that the disc type brake two-stage is measured in real time is urgent
The forward gradient method of braking time, or the reverse gradient method of brake hard time disc type brake two-stage is measured in real time；
The forward gradient method is from the beginning of sampled point sequence number 0, along data acquisition sequence, to every on oil pressure course curve
It is individual, point-to-point measurement its forward gradient, by comparing forward graded, measurement obtains B points, C points, D points and E points position：
Sampled point sequence number mb、mc、mdAnd me, B points, C points, D points and E points are five sections oil pressure course curve segmentation --- declutch stable section
F, phase process transient state section G of two-stage brake hard one, stage Steady-state process section H, two-stage process transient state section K and combined floodgate are steady
State section L, thus measurement obtains one stage of two-stage brake hard idle motion time Tbc= (mc-mb) T, the two-stage promptly makes
A dynamic stage duration Tcd=(md-mc) T, two-stage brake hard two-stage idle motion time Tde=(me-md)·T；
The reverse gradient method is from the beginning of sampled point sequence number m, along data acquisition sequence, to every on oil pressure course curve
It is individual, point-to-point measurement its reverse gradient, by comparing reverse graded, measurement obtains E points, D points, C points and B points position：
Sampled point sequence number me、md、mcAnd mb, E points, D points, C points and B points are five sections oil pressure course curve segmentation --- declutch stable section
F, phase process transient state section G of two-stage brake hard one, stage Steady-state process section H, two-stage process transient state section K and combined floodgate are steady
State section L, thus measurement obtains one stage of two-stage brake hard idle motion time Tbc= (mc-mb) T, two-stage brake hard
One stage duration Tcd=(md-mc) T, two-stage brake hard two-stage idle motion time Tde=(me-md)·T。
A kind of gradient method of detection brake hard time disc type brake two-stage, the real-time measurement disc type brake two
The flow process of the forward gradient method of brake hard time in stage, it is comprised the following steps that：
1）During the brake hard of disc type brake two-stage, under lock control control, capture card/PLC is with specified cycle T
Or the oil pressure value of frequency f continuous acquisition oil pressure sensor gives computer, the oil pressure sensor oil pressure value for being gathered composition is made
Dynamic lock two-stage brake hard oil pressure course curve, is divided into five sections：
（1）Two-stage brake hard process start before stable state section F, its forward oil pressure value changes（Forward gradient）＜ α；
（2）One phase process transient state section G, its forward oil pressure value changes（Forward gradient）≥α；
（3）One stage Steady-state process section H, its forward oil pressure value changes（Forward gradient）＜ α；
（4）Two-stage process transient state section K, its forward oil pressure value changes（Forward gradient）≥α；
（5）Two-stage transient process terminates rear stable state section L, its forward oil pressure value changes, i.e. forward gradient ＜ α, and α is suitable
To Grads threshold, it is related to cycle T；
2）Two-stage brake hard oil pressure course curve stable state section F and the joint B of transient state section G are that the two-stage is tight on curve
One phase process starting point of anxious braking, its sampled point sequence number mbWith sampled point time tmb, tmb=t0+mbT, in B points to the left
Point i（I ＜ mb）, the forward gradient ＜ α put on correspondence course curve；
3）Two-stage brake hard oil pressure course curve transient state section G and stable state section H point joint C are that a stage is temporary on curve
State course finishing point, is also a stage steady-state process starting point；Its sampled point sequence number mcWith sampled point time tmc, tmc= t0+
mcT, C points to the left with B points and its point i to the right（mb≤ i ＜ mc）, the forward gradient of the point on correspondence oil pressure course curve
≥α；
4）Two-stage brake hard oil pressure course curve stable state section H and the joint D of transient state section K are that a stage is steady on curve
State course finishing point, is also two-stage transient process starting point, its sampled point sequence number mdWith sampled point time tmd, tmd= t0+
mdT, D points to the left with C points and its point i to the right（mc≤ i ＜ md）, the forward gradient of the point on correspondence oil pressure course curve
＜ α；
5）Two-stage brake hard oil pressure course curve transient state section K and the joint E of stable state section L are that the two-stage is temporary on curve
State course finishing point, its sampled point sequence number meWith sampled point time tme, tmd= t0+meT, E points to the left with D points and its
Point i to the right（md≤ i ＜ me）, the forward gradient >=α of the point on correspondence oil pressure course curve；
6）Point i on curve in E points and its to the right（i≥me）, forward gradient ＜ of the point on correspondence oil pressure course curve
α；
7）In real time B pipe oil pressure courses curve up-samples forward gradient g (i)=∣ O (i+1)-O (the i) ∣, O of point sequence number i
I () and O (i+1) are respectively the oil pressure sampled value on the oil pressure course curve of sampled point sequence number i and i+1；
8）From the beginning of sampled point sequence number 0, along data acquisition sequence, to each point on oil pressure course curve, point-to-point measurement
Their forward gradient, by comparing forward graded, measures the position of B, C, D and E each point：Sampled point sequence number mb、mc、
mdAnd me；
9）According to the B points on the two-stage brake hard oil pressure course curve for measuring, C points, D points and E points position：Sampling
Point sequence number mb、mc、mdAnd me, thus survey calculation obtain each section of time t of damper brake two-stage brake hardbc= (mc-mb) T,
tcd= (md-mc) T, tde= (me-md)·T；Its flow process is as follows：
A. start, work as i:=0, S:For the first time forward gradient W is W for=0, Jing:=∣ O (i+1)-O (i) ∣ are calculated, and judge W
>=α, is to continue with next step, otherwise Jing i:=i+1 is back to for the first time forward gradient W and calculates,
B. stater S is judged, as S=0, Jing mb:=i, i:=i+1 is to forward gradient W for the second time: =∣O(i+1)—O
I () ∣ is calculated；As S=1, Jing mb:=i, tcd: =(md-mc) T to i:=i+1 is again to forward gradient W for the second time: =∣O(i+
1)-O (i) ∣ are calculated；
C. after calculating forward gradient W, judge W ＜ α, be to continue with next step, otherwise Jing i:=i+1 is back to second
Forward gradient W is calculated；
D. stater S is judged, as S=1, Jing me:=i to tde: = (me-md) T calculating, terminate；As S=0, Jing mc:
=i, tbc: = (mc-mb) T calculating, S:=1 is back to for the first time to the calculating of forward gradient W.
A kind of gradient method of detection brake hard time disc type brake two-stage, the real-time measurement disc type brake two
The flow process of the reverse gradient method of brake hard time in stage, it is comprised the following steps that：
1）During the brake hard of disc type brake two-stage, under lock control control, capture card/PLC is with specified cycle T
Or the oil pressure value of frequency f continuous acquisition oil pressure sensor gives computer, the oil pressure sensor oil pressure value composition braking for being gathered
Lock two-stage brake hard oil pressure course curve, is divided into five sections：
（1）Two-stage brake hard process start before stable state section F, its reverse oil pressure value changes（Reverse gradient）＜ α；
（2）One phase process transient state section G, its reverse oil pressure value changes（Reverse gradient）≥α；
（3）One stage Steady-state process section H, its reverse oil pressure value changes（Reverse gradient）＜ α；
（4）Two-stage process transient state section K, its reverse oil pressure value changes（Reverse gradient）≥α；
（5）Two-stage transient process terminates rear stable state section L, its reverse oil pressure value changes（Reverse gradient）＜ α, α are inverse
To Grads threshold, it is related to cycle T；
2）Two-stage brake hard oil pressure course curve stable state section L and the joint E points of transient state section K are the two-stages on curve
Brake hard two-stage transient process end point, its sampled point sequence number meWith sampled point time tme, tme=t0+meT, in E
Point point i to the right（I ＞ me）, the reverse gradient ＜ α put on correspondence course curve；
3）Two-stage brake hard oil pressure course curve transient state section K and stable state section H point joint D are that the two-stage is temporary on curve
State process starting point, is also a stage steady-state process end point, its sampled point sequence number mdWith sampled point time tmd, tmd= t0+
mdT, in E points and its to the left and D points to the right between point i（md＜ i≤me）, the reverse ladder of the point on correspondence oil pressure course curve
Degree >=α；
4）Two-stage brake hard oil pressure course curve stable state section H and the joint C points of transient state section G are a stages on curve
Steady-state process starting point, is also a stage transient process end point, its sampled point sequence number mcWith sampled point time tmc, tmc= t0
+mcT, in D points and its to the left and C points to the right between point i（mc＜ i≤md）, correspondingly the point on oil pressure course curve is reverse
Gradient ＜ α；
5）Two-stage brake hard oil pressure course curve transient state section G and the joint B points of stable state section F are a stages on curve
Transient process starting point, its sampled point sequence number mbWith sampled point time tmb, tmb= t0+mbT, B points to the right with C points and
Its to the left between point i（mb＜ i≤mc）, the reverse gradient >=α of the point on correspondence oil pressure course curve；
6）Point i on curve in B points and its to the right（i≤mb）, reverse gradient ＜ of the point on correspondence oil pressure course curve
α；
7）In real time B pipe oil pressure courses curve up-samples reverse gradient g (i)=∣ O (i)-O (i-1) ∣ of point sequence number i；O(i)
The oil pressure sampled value on the oil pressure course curve of sampled point sequence number i and i-1 is respectively with O (i-1)；
8）From the beginning of sampled point sequence number m, against data acquisition sequence, to each point on oil pressure course curve, point-to-point measurement
Their reverse gradient, by comparing reverse graded, measures the position of E, D, C and B each point：Sampled point sequence number me、md、
mcAnd mb；；
9）According to the E points on the two-stage brake hard oil pressure course curve for measuring and D points, C points are adopted with B point positions
Sample point number me、md、mcAnd mb, survey calculation obtains each section of time t of damper brake two-stage brake hardbc= (mc-mb) T, tcd
= (md-mc) T, tde= (me-md)·T；Its flow process is as follows：
A. start, work as i:=m, S:For the first time reverse gradient W is W to=0 Jing:(i-1) ∣ are calculated=∣ O (i)-O, judge W
>=α, is to continue with next step, otherwise Jing i:=i -1 is back to reverse gradient W for the first time and calculates,
B. stater S is judged, as S=0, Jing mb:=i, i:=i-1 to second reverse gradient W: =∣O(i)—O(i-
1) ∣ is calculated；As S=1, Jing Mc:=i, tcd: =(md-mc) T to i:=i-1 is again to second reverse gradient W: =∣O
I (i-1) ∣ are calculated ()-O；
C. after calculating second reverse gradient W, judge W ＜ α, be to continue with next step, otherwise Jing i:=i+1 is back to
Second forward gradient W is calculated；
D. stater S is judged, as S=1, Jing Mb:=i to Tbc: = (mc-mb) T calculating, terminate；As S=0, Jing Md:
=i, Tde: = (me-md) T calculating, S:=1 is back to reverse gradient W for the first time calculates.
Because using technical scheme as above, the present invention has following superiority：
A kind of gradient method and device of detection brake hard time disc type brake two-stage, was promptly made according to the two-stage
The physical behavio(u)r feature of dynamic damper brake oil pressure, the gradient method and device of each phases-time of direct measurement two-stage brake hard.
The present invention by the oil pressure sensor on the Hydraulic Station B road binders pipes, under lock control control, capture card/PLC with
The oil pressure value of specified cycle T or frequency f continuous acquisition oil pressure sensor is transferred to industrial computer and lock by capture card/PLC
Control.During the brake hard of disc type brake two-stage, the oil pressure value composition second order of the oil pressure sensor that computer is gathered
Section brake hard oil pressure course curve, B points are one stage of two-stage brake hard transient process starting points in curve, and C points are two
One stage of stage brake hard transient process end point, is also one stage of two-stage brake hard steady-state process starting point, and D points are
One stage of two-stage brake hard steady-state process end point, is also two-stage brake hard two-stage transient process starting point, E points
It is two-stage brake hard two-stage transient process end point.
The gradient method of brake hard time disc type brake two-stage is measured in real time：
（1）Forward gradient method is from the beginning of sampled point sequence number 0, along data acquisition sequence, to every on oil pressure course curve
Individual, point-to-point measurement its forward gradient, by comparing forward graded, measures the position of B, C, D and E each point（Sampling
Point sequence number mb、mc、mdAnd me）, thus measure one stage of two-stage brake hard idle motion time Tbc= (mc-mb) T, two
One stage of stage brake hard duration Tcd=(md-mc) T, two-stage brake hard two-stage idle motion time Tde=(me-
md)·T。
（2）Reverse gradient method is from the beginning of sampled point sequence number m, along data acquisition sequence, to every on oil pressure course curve
Individual, point-to-point measurement its reverse gradient, by comparing reverse graded, measures the position of E, D, C and B each point（Sampling
Point sequence number me、md、mcAnd mb）, thus measure one stage of two-stage brake hard idle motion time Tbc= (mc-mb) T, two
One stage of stage brake hard duration Tcd=(md-mc) T, two-stage brake hard two-stage idle motion time Tde=(me-
md)·T。
The forward gradient method and reverse gradient method of present invention measurement each time of damper brake two-stage brake hard, is to adopt
When measuring process starting point time and the end point in the oil pressure course curve of each phase process damper brake of two-stage brake hard
Between method, each phases-time of direct measurement two-stage brake hard directly reflects each phases-time of two-stage brake hard
Physical behavio(u)r feature, meets the physical behavio(u)r feature of brake hard time damper brake two-stage, promptly makes with the existing two-stage
Dynamic Method Of Time Measurement is compared, and with measurement data accurately, high precision, error is little, realizes convenient and simple, it is not necessary to add any
Attachment device, can each phases-time of real-time accurate detection two-stage brake hard online.
Description of the drawings
Fig. 1 is the disc-like brake structure schematic diagram for measuring brake hard time two-stage in real time；
Fig. 2 is the circuit block diagram for measuring disc type brake two-stage brake hard time gradient device in real time；
Fig. 3 measures in real time brake hard time two-stage to B pipes oil pressure sensor sampling oil pressure course curve chart；
Fig. 4 is the forward gradient method flow chart for measuring brake hard time two-stage in real time；
Fig. 5 is the reverse gradient method flow chart for measuring brake hard time two-stage in real time.
In figure：1. disk brake；2. damper brake；3. piston；4. disc spring；5. oil cylinder；6A.A road binders pipe oil pressure sensors；
6B.B road binders pipe oil pressure sensors；7A. brake discs A；7B. brake discs B；8. roller；9. cage/Tau-Kok struggle against；10. steel wire rope；11.
Hydraulic Station；P-oil pressure；Common N number of damper brake；W-working cell, S --- stater.
In Fig. 3：F：The stable state that declutches oil pressure；G：One stage transient state oil pressure；H：One stage stable state oil pressure；K：Two-stage transient state oil
Pressure；L：Combined floodgate stable state oil pressure；YY-oil pressure.
Specific embodiment
Below according to description of the drawings embodiment of the present invention example.
As shown in Fig. 1,2,3,4,5, a kind of gradient device of detection brake hard time disc type brake two-stage, bag
Include：Oil pressure sensor 6B, capture card/PLC, industrial computer and gate control system on B road binders pipes, brake disc 7B
On N number of damper brake 2 is distributed with, be provided with oil pressure on the B road binders pipes of each oil cylinder 5 of flexible damper brake 2 connected with Hydraulic Station 11
Sensor 6B；Oil pressure sensor 6B on each B road binders pipe is input into by capture card/PLC first input ends with industrial computer
End is connected；Industrial computer outfan is connected by gate control system with flexible damper brake 2, wherein gate control system control damper brake
The 2 flexible signals of telecommunication are connected with the inputs of capture card/PLC second.
A kind of gradient method of detection brake hard time disc type brake two-stage, its step is as follows：
1）, set up two-stage brake hard oil pressure course curve, under gate control system control, capture card/PLC is with cycle T
Or the oil pressure value of oil pressure sensor 6B transmits computer on the individual B road binders pipe of frequency f continuous acquisition m (m=nf)；In disc type brake
During the brake hard of lock two-stage, the oil pressure value of the m B road binders pipe oil pressure sensor 6B for being gathered is built up braking by computer
The oil pressure course curve of lock two-stage brake hard；
Wherein, B points are one stage of two-stage brake hard transient process starting points in curve, and C points are promptly to make the two-stage
A dynamic stage transient process end point, is also one stage of two-stage brake hard steady-state process starting point, and D points are that the two-stage is urgent
A stage steady-state process end point is braked, is also two-stage brake hard two-stage transient process starting point, E points are that the two-stage is tight
Anxious braking two-stage transient process end point；
2）, according to two-stage brake hard oil pressure course curve is built up, that the disc type brake two-stage is measured in real time is urgent
The forward gradient method of braking time, or the reverse gradient method of brake hard time disc type brake two-stage is measured in real time；
The forward gradient method is from the beginning of sampled point sequence number 0, along data acquisition sequence, to every on oil pressure course curve
It is individual, point-to-point measurement its forward gradient, by comparing forward graded, measurement obtains B points, C points, D points and E points position：
Sampled point sequence number mb、mc、mdAnd me, B points, C points, D points and E points are five sections oil pressure course curve segmentation --- declutch stable section
F, phase process transient state section G of two-stage brake hard one, stage Steady-state process section H, two-stage process transient state section K and combined floodgate are steady
State section L, thus measurement obtains one stage of two-stage brake hard idle motion time Tbc= (mc-mb) T, the two-stage promptly makes
A dynamic stage duration Tcd=(md-mc) T, two-stage brake hard two-stage idle motion time Tde=(me-md)·T；
The reverse gradient method is from the beginning of sampled point sequence number m, along data acquisition sequence, to every on oil pressure course curve
It is individual, point-to-point measurement its reverse gradient, by comparing reverse graded, measurement obtains E points, D points, C points and B points position：
Sampled point sequence number me、md、mcAnd mb, E points, D points, C points and B points are five sections oil pressure course curve segmentation --- declutch stable section
F, phase process transient state section G of two-stage brake hard one, stage Steady-state process section H, two-stage process transient state section K and combined floodgate are steady
State section L, thus measurement obtains one stage of two-stage brake hard idle motion time Tbc= (mc-mb) T, two-stage brake hard
One stage duration Tcd=(md-mc) T, two-stage brake hard two-stage idle motion time Tde=(me-md)·T。
The flow process of the forward gradient method of brake hard time disc type brake two-stage is measured in real time, and step is as follows：
1）During the brake hard of disc type brake two-stage, under lock control control, capture card/PLC is with specified cycle T
Or the oil pressure value of frequency f continuous acquisition oil pressure sensor gives computer, the oil pressure sensor oil pressure value for being gathered composition is made
Dynamic lock two-stage brake hard oil pressure course curve, is divided into five sections：
（1）Two-stage brake hard process start before stable state section F, its forward oil pressure value changes（Forward gradient）＜ α；
（2）One phase process transient state section G, its forward oil pressure value changes（Forward gradient）≥α；
（3）One stage Steady-state process section H, its forward oil pressure value changes（Forward gradient）＜ α；
（4）Two-stage process transient state section K, its forward oil pressure value changes（Forward gradient）≥α；
（5）Two-stage transient process terminates rear stable state section L, its forward oil pressure value changes, i.e. forward gradient ＜ α, and α is suitable
To Grads threshold, it is related to cycle T；
2）Two-stage brake hard oil pressure course curve stable state section F and the joint B of transient state section G are that the two-stage is tight on curve
One phase process starting point of anxious braking, its sampled point sequence number mbWith sampled point time tmb, tmb=t0+mbT, in B points to the left
Point i（I ＜ mb）, the forward gradient ＜ α put on correspondence course curve；
3）Two-stage brake hard oil pressure course curve transient state section G and stable state section H point joint C are that a stage is temporary on curve
State course finishing point, is also a stage steady-state process starting point；Its sampled point sequence number mcWith sampled point time tmc, tmc= t0+
mcT, C points to the left with B points and its point i to the right（mb≤ i ＜ mc）, the forward gradient of the point on correspondence oil pressure course curve
≥α；
4）Two-stage brake hard oil pressure course curve stable state section H and the joint D of transient state section K are that a stage is steady on curve
State course finishing point, is also two-stage transient process starting point, its sampled point sequence number mdWith sampled point time tmd, tmd= t0+
mdT, D points to the left with C points and its point i to the right（mc≤ i ＜ md）, the forward gradient of the point on correspondence oil pressure course curve
＜ α；
5）Two-stage brake hard oil pressure course curve transient state section K and the joint E of stable state section L are that the two-stage is temporary on curve
State course finishing point, its sampled point sequence number meWith sampled point time tme, tmd= t0+meT, E points to the left with D points and its
Point i to the right（md≤ i ＜ me）, the forward gradient >=α of the point on correspondence oil pressure course curve；
6）Point i on curve in E points and its to the right（i≥me）, forward gradient ＜ of the point on correspondence oil pressure course curve
α；
7）In real time B pipe oil pressure courses curve up-samples forward gradient g (i)=∣ O (i+1)-O (the i) ∣, O of point sequence number i
I () and O (i+1) are respectively the oil pressure sampled value on the oil pressure course curve of sampled point sequence number i and i+1；
8）From the beginning of sampled point sequence number 0, along data acquisition sequence, to each point on oil pressure course curve, point-to-point measurement
Their forward gradient, by comparing forward graded, measures the position of B, C, D and E each point：Sampled point sequence number mb、mc、
mdAnd me；
9）According to the B points on the two-stage brake hard oil pressure course curve for measuring, C points, D points and E points position：Sampling
Point sequence number mb、mc、mdAnd me, thus survey calculation obtain each section of time t of damper brake two-stage brake hardbc= (mc-mb) T,
tcd= (md-mc) T, tde= (me-md)·T.Its flow process is as follows：
A. start, work as i:=0, S:For the first time forward gradient W is W for=0, Jing:=∣ O (i+1)-O (i) ∣ are calculated, and judge W
>=α, is to continue with next step, otherwise Jing i:=i+1 is back to for the first time forward gradient W and calculates,
B. stater S is judged, as S=0, Jing mb:=i, i:=i+1 is to forward gradient W for the second time: =∣O(i+1)—O
I () ∣ is calculated；As S=1, Jing mb:=i, tcd: =(md-mc) T to i:=i+1 is again to forward gradient W for the second time: =∣O(i+
1)-O (i) ∣ are calculated；
C. after calculating forward gradient W, judge W ＜ α, be to continue with next step, otherwise Jing i:=i+1 is back to second
Forward gradient W is calculated；
D. stater S is judged, as S=1, Jing me:=i to tde: = (me-md) T calculating, terminate；As S=0, Jing mc:
=i, tbc: = (mc-mb) T calculating, S:=1 is back to for the first time to the calculating of forward gradient W.
The flow process of the reverse gradient method of brake hard time disc type brake two-stage is measured in real time, and its step is as follows：
1）During the brake hard of disc type brake two-stage, under lock control control, capture card/PLC is with specified cycle T
Or the oil pressure value of frequency f continuous acquisition oil pressure sensor gives computer, the oil pressure sensor oil pressure value composition braking for being gathered
Lock two-stage brake hard oil pressure course curve, is divided into five sections：
（2）Two-stage brake hard process start before stable state section F, its reverse oil pressure value changes（Reverse gradient）＜ α；
（2）One phase process transient state section G, its reverse oil pressure value changes（Reverse gradient）≥α；
（3）One stage Steady-state process section H, its reverse oil pressure value changes（Reverse gradient）＜ α；
（4）Two-stage process transient state section K, its reverse oil pressure value changes（Reverse gradient）≥α；
（5）Two-stage transient process terminates rear stable state section L, its reverse oil pressure value changes（Reverse gradient）＜ α, α are inverse
To Grads threshold, it is related to cycle T；
2）Two-stage brake hard oil pressure course curve stable state section L and the joint E points of transient state section K are the two-stages on curve
Brake hard two-stage transient process end point, its sampled point sequence number meWith sampled point time tme, tme=t0+meT, in E
Point point i to the right（I ＞ me）, the reverse gradient ＜ α put on correspondence course curve；
3）Two-stage brake hard oil pressure course curve transient state section K and stable state section H point joint D are that the two-stage is temporary on curve
State process starting point, is also a stage steady-state process end point, its sampled point sequence number mdWith sampled point time tmd, tmd= t0+
mdT, in E points and its to the left and D points to the right between point i（md＜ i≤me）, the reverse ladder of the point on correspondence oil pressure course curve
Degree >=α；
4）Two-stage brake hard oil pressure course curve stable state section H and the joint C points of transient state section G are a stages on curve
Steady-state process starting point, is also a stage transient process end point, its sampled point sequence number mcWith sampled point time tmc, tmc= t0
+mcT, in D points and its to the left and C points to the right between point i（mc＜ i≤md）, correspondingly the point on oil pressure course curve is reverse
Gradient ＜ α；
5）Two-stage brake hard oil pressure course curve transient state section G and the joint B points of stable state section F are a stages on curve
Transient process starting point, its sampled point sequence number mbWith sampled point time tmb, tmb= t0+mbT, B points to the right with C points and
Its to the left between point i（mb＜ i≤mc）, the reverse gradient >=α of the point on correspondence oil pressure course curve；
6）Point i on curve in B points and its to the right（i≤mb）, reverse gradient ＜ of the point on correspondence oil pressure course curve
α；
7）In real time B pipe oil pressure courses curve up-samples reverse gradient g (i)=∣ O (i)-O (i-1) ∣ of point sequence number i；O(i)
The oil pressure sampled value on the oil pressure course curve of sampled point sequence number i and i-1 is respectively with O (i-1)；
8）From the beginning of sampled point sequence number m, against data acquisition sequence, to each point on oil pressure course curve, point-to-point measurement
Their reverse gradient, by comparing reverse graded, measures the position of E, D, C and B each point：Sampled point sequence number me、md、
mcAnd mb；；
9）According to the E points on the two-stage brake hard oil pressure course curve for measuring and D points, C points are adopted with B point positions
Sample point number me、md、mcAnd mb, survey calculation obtains each section of time t of damper brake two-stage brake hardbc= (mc-mb) T, tcd
= (md-mc) T, tde= (me-md)·T.Its flow process is as follows：
A. start, work as i:=m, S:For the first time reverse gradient W is W to=0 Jing:(i-1) ∣ are calculated=∣ O (i)-O, judge W
>=α, is to continue with next step, otherwise Jing i:=i -1 is back to reverse gradient W for the first time and calculates,
B. stater S is judged, as S=0, Jing mb:=i, i:=i-1 to second reverse gradient W: =∣O(i)—O(i-
1) ∣ is calculated；As S=1, Jing Mc:=i, tcd: =(md-mc) T to i:=i-1 is again to second reverse gradient W: =∣O
I (i-1) ∣ are calculated ()-O；
C. after calculating second reverse gradient W, judge W ＜ α, be to continue with next step, otherwise Jing i:=i+1 is back to
Second forward gradient W is calculated；
D. stater S is judged, as S=1, Jing Mb:=i to Tbc: = (mc-mb) T calculating, terminate；As S=0, Jing Md:
=i, Tde: = (me-md) T calculating, S:=1 is back to reverse gradient W for the first time calculates.
The gradient device of measurement brake hard time disc type brake two-stage in real time of the invention, the oil pressure in such as Fig. 1 is passed
Sensor, capture card/PLC, industrial computer and lock control, lock control is the abbreviation lock control of disk brake online monitoring system or lock control system
System.When there is two-stage brake hard, under lock control control, capture card/PLC is with specified cycle T（Or frequency f）Continuous acquisition
The oil pressure value of oil pressure sensor gives computer, the oil pressure value composition two-stage brake hard oil pressure course curve sampled, such as
Fig. 2.
In real time forward in gradient method, in Fig. 2 from the beginning of sampled point sequence number 0, along the sampling of oil pressure sensor oil pressure value
Sequentially, to each point point-to-point measurement its forward gradient on oil pressure course curve, by comparing forward graded, measure from
Forward position sampling point sequence number m of the joint B points of gradient ＜ α to forward gradient >=αb, from forward gradient >=α to forward gradient
Position sampling point sequence number m of the joint C points of ＜ αc, the position of the joint D points from forward gradient ＜ α to forward gradient >=α
Sampled point sequence number md, and position sampling point sequence number m of the joint E points from forward gradient >=α to forward gradient ＜ αeThus survey
Measure the time T of each section of damper brake two-stage brake hardbc= (mc-mb) T, Tcd= (md-mc) T, Tde= (me-md)·
T。
In real-time reverse gradient method, in Fig. 2 from the beginning of sampled point sequence number m, against the sampling of oil pressure sensor oil pressure value
Sequentially, to each point point-to-point measurement its reverse gradient on oil pressure course curve, by comparing reverse graded, measure from
The position of the joint E points of reverse gradient ＜ α to reverse gradient >=α（Sampled point sequence number me）, from reverse gradient >=α to reverse ladder
The position of the joint D points of degree ＜ α（Sampled point sequence number md）, the joint C points from reverse gradient ＜ α to reverse gradient >=α
Position（Sampled point sequence number mc）, the position of the joint B points from reverse gradient >=α to reverse gradient ＜ α（Sampled point sequence number mb）,
Thus the time T of each section of damper brake two-stage brake hard is measuredde= (me-md) T, Tcd= (md-mc) T, Tbc=
(mc-mb)·T。
Claims (4)
1. a kind of gradient device of detection brake hard time disc type brake two-stage, is characterized in that：Including：Installed in B roads
Oil pressure sensor on oil pipe（6B）, capture card/PLC, industrial computer and gate control system, the brake disc of disc type brake（7B）
On N number of damper brake is distributed with（2）, with Hydraulic Station（11）Each flexible damper brake of connection（2）Oil cylinder（5）B road binders Guan Shangshe
It is equipped with oil pressure sensor（6B）；Oil pressure sensor on each B road binders pipe（6B）By capture card/PLC first input ends and work
Control computer input end is connected；Industrial computer outfan is by gate control system and flexible damper brake（2）It is connected, wherein lock control
System controls damper brake（2）The flexible signal of telecommunication is connected with the inputs of capture card/PLC second.
2. as claimed in claim 1 a kind of of the gradient device of detection brake hard time disc type brake two-stage detects disc type
The gradient method of brake hard time damper brake two-stage, is characterized in that：Its step is as follows：
1）, set up two-stage brake hard oil pressure course curve, under gate control system control, capture card/PLC is with cycle T or frequency
Oil pressure sensor on the individual B road binders pipe of rate f continuous acquisition m (m=nf)（6B）Oil pressure value transmission computer；In disc type brake
During two-stage brake hard, computer is by the m B road binders pipe oil pressure sensor for being gathered（6B）Oil pressure value build up braking
The oil pressure course curve of lock two-stage brake hard；
Wherein, B points are one stage of two-stage brake hard transient process starting points in curve, and C points are two-stage brake hards one
Stage transient process end point, is also one stage of two-stage brake hard steady-state process starting point, and D points are two-stage brake hards
One stage steady-state process end point, is also two-stage brake hard two-stage transient process starting point, and E points are promptly to make the two-stage
Dynamic two-stage transient process end point；
2）, measured the brake hard of disc type brake two-stage in real time according to building up two-stage brake hard oil pressure course curve
The forward gradient method of time, or the reverse gradient method of brake hard time disc type brake two-stage is measured in real time；
The forward gradient method be from the beginning of sampled point sequence number 0, along data acquisition sequence, on oil pressure course curve each
Point, point-to-point measurement its forward gradient, by comparing forward graded, measurement obtains B points, C points, D points and E points position：Adopt
Sample point number mb、mc、mdAnd me, B points, C points, D points and E points are five sections oil pressure course curve segmentation --- the stable section F that declutches,
Phase process transient state section G of two-stage brake hard one, stage Steady-state process section H, two-stage process transient state section K and combined floodgate stable state
Section L, thus measurement obtains one stage of two-stage brake hard idle motion time Tbc= (mc-mb) T, two-stage brake hard
One stage duration Tcd=(md-mc) T, two-stage brake hard two-stage idle motion time Tde=(me-md)·T；
The reverse gradient method be from the beginning of sampled point sequence number m, along data acquisition sequence, on oil pressure course curve each
Point, point-to-point measurement its reverse gradient, by comparing reverse graded, measurement obtains E points, D points, C points and B points position：Adopt
Sample point number me、md、mcAnd mb, E points, D points, C points and B points are five sections oil pressure course curve segmentation --- the stable section F that declutches,
Phase process transient state section G of two-stage brake hard one, stage Steady-state process section H, two-stage process transient state section K and combined floodgate stable state
Section L, thus measurement obtains one stage of two-stage brake hard idle motion time Tbc= (mc-mb) T, two-stage brake hard one
Phase duration Tcd=(md-mc) T, two-stage brake hard two-stage idle motion time Tde=(me-md)·T。
3. the gradient method of a kind of detection brake hard time disc type brake two-stage according to claim 2, it is special
Levying is：The flow process of the forward gradient method of real-time measurement brake hard time disc type brake two-stage, its concrete steps is such as
Under：
1）During the brake hard of disc type brake two-stage, under lock control control, capture card/PLC is with specified cycle T or frequency
The oil pressure value of rate f continuous acquisition oil pressure sensor gives computer, and the oil pressure sensor oil pressure value for being gathered is constituted into damper brake
Two-stage brake hard oil pressure course curve, is divided into five sections：
（1）Two-stage brake hard process start before stable state section F, its forward oil pressure value changes（Forward gradient）＜ α；
（2）One phase process transient state section G, its forward oil pressure value changes, i.e. forward gradient >=α；
（3）One stage Steady-state process section H, its forward oil pressure value changes, i.e. forward gradient ＜ α；
（4）Two-stage process transient state section K, its forward oil pressure value changes, i.e. forward gradient >=α；
（5）Two-stage transient process terminates rear stable state section L, its forward oil pressure value changes, i.e. forward gradient ＜ α, and α is forward ladder
Degree threshold value, it is related to cycle T；
2）Two-stage brake hard oil pressure course curve stable state section F and the joint B of transient state section G are promptly to make the two-stage on curve
A dynamic phase process starting point, its sampled point sequence number mbWith sampled point time tmb, tmb=t0+mbT, in B points point i to the left
（I ＜ mb）, the forward gradient ＜ α put on correspondence course curve；
3）Two-stage brake hard oil pressure course curve transient state section G and stable state section H point joint C are a stage transient state mistakes on curve
Journey end point, is also a stage steady-state process starting point；Its sampled point sequence number mcWith sampled point time tmc, tmc= t0+mc·
T, C points to the left with B points and its point i to the right（mb≤ i ＜ mc）, the forward gradient >=α of the point on correspondence oil pressure course curve；
4）Two-stage brake hard oil pressure course curve stable state section H and the joint D of transient state section K are a stage stable state mistakes on curve
Journey end point, is also two-stage transient process starting point, its sampled point sequence number mdWith sampled point time tmd, tmd= t0+md·
T, D points to the left with C points and its point i to the right（mc≤ i ＜ md）, the forward gradient ＜ α of the point on correspondence oil pressure course curve；
5）Two-stage brake hard oil pressure course curve transient state section K and the joint E of stable state section L are two-stage transient state mistakes on curve
Journey end point, its sampled point sequence number meWith sampled point time tme, tmd= t0+meT, E points to the left with D points and its to the right
Point i（md≤ i ＜ me）, the forward gradient >=α of the point on correspondence oil pressure course curve；
6）Point i on curve in E points and its to the right（i≥me）, the forward gradient ＜ α of the point on correspondence oil pressure course curve；
7）In real time B pipe oil pressure courses curve up-samples forward gradient g (i)=∣ O (i+1)-O (the i) ∣, O (i) and O of point sequence number i
(i+1) the oil pressure sampled value being respectively on the oil pressure course curve of sampled point sequence number i and i+1；
8）From the beginning of sampled point sequence number 0, along data acquisition sequence, to each point on oil pressure course curve, point-to-point measurement they
Forward gradient, by comparing forward graded, measure the position of B, C, D and E each point：Sampled point sequence number mb、mc、mdWith
me；
9）According to the B points on the two-stage brake hard oil pressure course curve for measuring, C points, D points and E points position：Sampled point sequence
Number mb、mc、mdAnd me, thus survey calculation obtain each section of time t of damper brake two-stage brake hardbc= (mc-mb) T, tcd=
(md-mc) T, tde= (me-md)·T；Its flow process is as follows：
A. start, work as i:=0, S:For the first time forward gradient W is W for=0, Jing:=∣ O (i+1)-O (i) ∣ are calculated, and judge W >=α,
It is to continue with next step, otherwise Jing i:=i+1 is back to for the first time forward gradient W and calculates,
B. stater S is judged, as S=0, Jing mb:=i, i:=i+1 is to forward gradient W for the second time:=∣ O (i+1)-O (i) ∣ meters
Calculate；As S=1, Jing mb:=i, tcd: =(md-mc) T to i:=i+1 is again to forward gradient W for the second time: =∣O(i+1)—O
I () ∣ is calculated；
C. after calculating forward gradient W, judge W ＜ α, be to continue with next step, otherwise Jing i:=i+1 is back to second to suitable
Calculate to gradient W；
D. stater S is judged, as S=1, Jing me:=i to tde: = (me-md) T calculating, terminate；As S=0, Jing mc:=i,
tbc: = (mc-mb) T calculating, S:=1 is back to for the first time to the calculating of forward gradient W.
4. the gradient method of a kind of detection brake hard time disc type brake two-stage according to claim 2, it is special
Levying is：The flow process of the reverse gradient method of real-time measurement brake hard time disc type brake two-stage, its concrete steps is such as
Under：
1）During the brake hard of disc type brake two-stage, under lock control control, capture card/PLC is with specified cycle T or frequency
The oil pressure value of rate f continuous acquisition oil pressure sensor gives computer, the oil pressure sensor oil pressure value composition damper brake two for being gathered
Stage brake hard oil pressure course curve, is divided into five sections：
（1）Two-stage brake hard process start before stable state section F, its reverse oil pressure value changes, i.e., reverse gradient ＜ α；
（2）One phase process transient state section G, its reverse oil pressure value changes, i.e., reverse gradient >=α；
（3）One stage Steady-state process section H, its reverse oil pressure value changes, i.e., reverse gradient ＜ α；
（4）Two-stage process transient state section K, its reverse oil pressure value changes, i.e., reverse gradient >=α；
（5）Two-stage transient process terminates rear stable state section L, its reverse oil pressure value changes, i.e., reverse gradient ＜ α, and α is reverse ladder
Degree threshold value, it is related to cycle T；
2）Two-stage brake hard oil pressure course curve stable state section L and the joint E points of transient state section K are that the two-stage is urgent on curve
Braking two-stage transient process end point, its sampled point sequence number meWith sampled point time tme, tme=t0+meT, E points to
Right point i（I ＞ me）, the reverse gradient ＜ α put on correspondence course curve；
3）Two-stage brake hard oil pressure course curve transient state section K and stable state section H point joint D are two-stage transient state mistakes on curve
Journey starting point, is also a stage steady-state process end point, its sampled point sequence number mdWith sampled point time tmd, tmd= t0+md·
T, in E points and its to the left and D points to the right between point i（md＜ i≤me）, the reverse gradient of the point on correspondence oil pressure course curve >=
α；
4）Two-stage brake hard oil pressure course curve stable state section H and the joint C points of transient state section G are a stage stable states on curve
Process starting point, is also a stage transient process end point, its sampled point sequence number mcWith sampled point time tmc, tmc= t0+
mcT, in D points and its to the left and C points to the right between point i（mc＜ i≤md）, the reverse ladder of the point on correspondence oil pressure course curve
Degree ＜ α；
5）Two-stage brake hard oil pressure course curve transient state section G and the joint B points of stable state section F are a stage transient state on curve
Process starting point, its sampled point sequence number mbWith sampled point time tmb, tmb= t0+mbT, B points to the right with C points and its to
Point i between a left side（mb＜ i≤mc）, the reverse gradient >=α of the point on correspondence oil pressure course curve；
6）Point i on curve in B points and its to the right（i≤mb）, the reverse gradient ＜ α of the point on correspondence oil pressure course curve；
7）In real time B pipe oil pressure courses curve up-samples reverse gradient g (i)=∣ O (i)-O (i-1) ∣ of point sequence number i；O (i) and O
(i-1) the oil pressure sampled value being respectively on the oil pressure course curve of sampled point sequence number i and i-1；
8）From the beginning of sampled point sequence number m, against data acquisition sequence, to each point on oil pressure course curve, point-to-point measurement they
Reverse gradient, by comparing reverse graded, measure the position of E, D, C and B each point：Sampled point sequence number me、md、mcWith
mb；；
9）According to the E points on the two-stage brake hard oil pressure course curve for measuring and the sampled point of D points, C points and B points position
Sequence number me、md、mcAnd mb, survey calculation obtains each section of time t of damper brake two-stage brake hardbc= (mc-mb) T, tcd=
(md-mc) T, tde= (me-md)·T；Its flow process is as follows：
A. start, work as i:=m, S:For the first time reverse gradient W is W to=0 Jing:=∣ O (i)-O (i-1) ∣ are calculated, and judge W >=α,
It is to continue with next step, otherwise Jing i:=i -1 is back to reverse gradient W for the first time and calculates,
B. stater S is judged, as S=0, Jing mb:=i, i:=i-1 to second reverse gradient W:(i-1) ∣ are counted=∣ O (i)-O
Calculate；As S=1, Jing Mc:=i, tcd: =(md-mc) T to i:=i-1 is again to second reverse gradient W: =∣O(i)—O(i-
1) ∣ is calculated；
C. after calculating second reverse gradient W, judge W ＜ α, be to continue with next step, otherwise Jing i:=i+1 is back to second
It is secondary that forward gradient W is calculated；
D. stater S is judged, as S=1, Jing Mb:=i to Tbc: = (mc-mb) T calculating, terminate；As S=0, Jing Md:=i,
Tde: = (me-md) T calculating, S:=1 is back to reverse gradient W for the first time calculates.
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| US6659233B2 (en) * | 2001-12-04 | 2003-12-09 | Hydro-Aire, Inc. | System and method for aircraft braking system usage monitoring |
| JP2008201388A (en) * | 2007-02-22 | 2008-09-04 | Toyota Motor Corp | Braking device |
| JP5234266B2 (en) * | 2008-08-29 | 2013-07-10 | 日立オートモティブシステムズ株式会社 | Disc brake device |
| US8380418B2 (en) * | 2009-08-26 | 2013-02-19 | GM Global Technology Operations LLC | Method for maintaining a brake rotor |
| CN203431079U (en) * | 2013-09-03 | 2014-02-12 | 洛阳翔霏机电科技有限责任公司 | Online monitoring system of disc brake for elevator |
| CN204253694U (en) * | 2014-06-27 | 2015-04-08 | 洛阳中重自动化工程有限责任公司 | The gradient device of real-time detection disc type brake two-stage emergency braking time |
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