CN102635288A - Ripple wave anti-clamping controller of car window and control method - Google Patents
Ripple wave anti-clamping controller of car window and control method Download PDFInfo
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- CN102635288A CN102635288A CN2012100022482A CN201210002248A CN102635288A CN 102635288 A CN102635288 A CN 102635288A CN 2012100022482 A CN2012100022482 A CN 2012100022482A CN 201210002248 A CN201210002248 A CN 201210002248A CN 102635288 A CN102635288 A CN 102635288A
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Abstract
The invention provides a ripple wave anti-clamping controller of a car window, which is mounted in an electric hoisting car window circuit of an automobile. The anti-clamping controller utilizes a ripple wave quantity detection circuit to detect the position of a car window; if the position of the car window is in a pre-set anti-clamping range, motor current is sampled through an operational amplifying circuit to obtain a real-time value of the current; a data processing unit compares according to a standard value of a corresponding position which is stored by a storage device; if a difference value is more than an allowable tolerance value, an obstacle is considered to be met, an anti-clamping state is enabled; otherwise, if the position of the car window is not in the regulated anti-clamping range, the anti-clamping state is not enabled. The anti-clamping controller measures the position of the car window based on a current ripple wave and the method does not need a Hall sensor, the cost is lower than that of a scheme needing the Hall sensor and the installation of a motor is simple. The anti-clamping controller disclosed by the invention judges whether a clamping phenomenon happens through a method of measuring an operation current value of the motor of the car window and the anti-clamping effect is reliable.
Description
Technical field
The invention belongs to the electron controls technology field, be specifically related to a kind of anti-clip controller of motorcar electric up-down vehicle window.
Background technology
Because the potential safety hazard that power windows exists, after particularly a lot of accidents were in the news, the power windows anti-pinch protection was suggested.Based on security consideration, the car technical standard of a lot of countries has all been done some relevant regulations to anti-pinch protection, on the vehicle that the one-touch automatic lifting windows function of power windows is housed, anti-clamping protective device need be housed.So-called power windows anti-pinch protection, exactly in case in the automatic uphill process of vehicle window, detect the existence of obstruction, vehicle window just stops to move upward automatically, prevents to damage obstruction; And move downward, to discharge obstruction.Though more existing anti-clamping methods are suggested both at home and abroad at present, these methods all are based on the anti-clamping method of Hall element, and Hall element has increased cost undoubtedly.And Hall element need be installed on the motor shaft, installs complicated.The present invention just is being based on and is proposing under such background.Whether the present invention utilizes current ripples to come inspected object to be clamped by vehicle window, is kind of an anti-clip controller that does not need Hall element, has reduced cost, and has reduced system complexity.
Summary of the invention
The objective of the invention is to propose a kind of no Hall motorcar electric up-down anti-pinching car window controller that detects based on current ripples simple in structure, lower-cost.
A kind of vehicle window ripple is prevented clip controller, is installed in the motorcar electric up-down vehicle window circuit, and it comprises: a processor, and it has mould/number conversion module, counting module, storage device and data processing module; A discharge circuit that carries out lifting motor current value sampling, one of which end connect between motor and the earth terminal, and this discharge circuit is the sampled signal processing and amplifying, the mould/number conversion module of other end signal output part connection processing device; The current ripples amount detection circuit of a motor; Front end is linked between the sampling resistor and motor of motor power connection end for the LPF delay circuit; The rear end is linked into the counting module of processor through a comparator; The output signal that comparator will pass through behind the delay circuit is compared with input current signal, irregular ripple signal is converted to the regular square-wave signal of cycle stability; Utilize the position of ripple amount detection circuit detection vehicle window, if the vehicle window position is in predetermined anti-pinch scope, just through discharge circuit current of electric is sampled; Obtain the instantaneous value of electric current, compare, if difference is greater than the tolerance that allows by the standard value of data processing unit according to the relevant position of memory device stores; Then think to run into obstruction, get into the anti-pinch state, otherwise; If the anti-pinch state in the anti-pinch scope of regulation, is not then carried out in the vehicle window position.
Hardware aspect, the present invention utilizes current ripples inspection vehicle window position, calculates the vehicle window position through the quantity that detects current ripples.What but the present invention adopted is not present generally popular hardware approach.Generally popular hardware approach is accomplished through bandpass filter at present, causes ripple frequency unstable easily, thereby makes ripple be difficult to from electric current, separate.Main thought of the present invention is through the RC delay circuit original ripple signal have been carried out time delay, again will the time ripple signal and the primary signal input comparator delayed, thereby obtain the square-wave signal of rule.This method thinking is novel, and is simple and reliable for structure, and certainty of measurement is high, and fault-tolerance is strong.
A kind of vehicle window ripple anti-clip control method is applied in the motorcar electric up-down vehicle window circuit, and step is:
(1) at the vehicle window initial phase, should guarantee can not run into obstruction in the vehicle window uphill process, note vehicle window current value of each position in uphill process as standard value this moment;
(2) when the vehicle window real time execution, utilize ripple to detect the position of vehicle window, whether the inspection vehicle window position is in the anti-pinch scope of regulation;
(3) if vehicle window in the anti-pinch scope of regulation, then through current of electric is sampled, can obtain two parameters from current sampling data; One of which; Through the position that current ripples calculates vehicle window, its two, judge the crest value of current ripples; Obtain the instantaneous value of electric current, compare with the standard value of relevant position;
(4) if the difference of both continuous three positions greater than the tolerance that allows, then thinks to run into obstruction, get into the anti-pinch state; Otherwise, if the anti-pinch state is not then carried out in the vehicle window position not in the anti-pinch scope of regulation.
The computational methods aspect, the motorcar electric up-down anti-pinching car window control algolithm that the present invention proposes is a kind of anti-pinch algorithm of contact.The present invention is based on the Car window electric machine operational factor and carry out the anti-pinch judgement.The present invention can obtain two parameters through current of electric is sampled from current sampling data.One of which, the position of calculating motor through current ripples.Its two, judge the crest value of current ripples, and utilize this value to be used as the standard that anti-pinch is judged.Because vehicle window is in uphill process, when running into obstruction, current of electric can increase than its value of normal uphill process.The present invention just is based on such principle, at the vehicle window initial phase, at this moment, should guarantee can not run into obstruction in the vehicle window uphill process.At the vehicle window initial phase, vehicle window current value of each position in uphill process is noted as standard value.When the vehicle window real time execution, the present invention utilizes the position of ripple detection vehicle window, if the vehicle window position is in the anti-pinch scope of regulation; Just current of electric is sampled; Obtain the instantaneous value of electric current, compare, if the difference of both continuous three positions is greater than the tolerance that allows with the standard value of relevant position; Then think to run into obstruction, get into the anti-pinch state.Otherwise, if the anti-pinch status detection is not then carried out in the vehicle window position not in the anti-pinch scope of regulation.
In addition, the present invention also makes vehicle window have the function of self-teaching.Through pressing the self study button, vehicle window not only can write down the current standard value of Car window electric machine operation when dispatching from the factory initialization, can also revise standard value at any time according to client's needs.After use after a while, many reasons such as ageing of rubber all can cause the variation of current of electric in the vehicle window uphill process.Self-teaching function of the present invention can be in the use of vehicle window calibration criterion value at any time.It is more accurate that anti-pinch is judged.
In addition, the present invention has also done special design to the selected point of standard current value and real-time current value.Current value is chosen at the crest place of current ripples, and the current value that so just can avoid comparing is because of different cause inaccurate in position.
The characteristics of control algolithm of the present invention are:
(1) the present invention is based on current ripples and measures the vehicle window position, and this method does not need Hall element, and cost needs the Hall element scheme low, and motor is installed simple.
(2) current ripples of the present invention detects the hardware approach that adopts, and compares with present popular hardware approach, and very big advantage is arranged.What at present popular hardware approach adopted is bandpass filter, causes ripple frequency unstable easily, thereby makes ripple be difficult to from electric current, separate.The elder generation that the present invention proposes carries out time delay with original ripple signal, again with delay time signal and primary signal input comparator, obtains the method for square-wave signal, just can avoid such shortcoming.
(2) the present invention's employing judges whether to clamp phenomenon through the method for the running current value of measurement Car window electric machine, and anti-pinch is reliable for effect.
(3) the present invention has self-learning function, can be at any time through write down the current standard value of motor operation again by key control.
(4) the present invention selects to have carried out meticulous design to the time point of the sampling of Car window electric machine running current, and the current sample time point has been chosen in the crest place of current ripples, has avoided the inaccurate of current sample.
Description of drawings
Fig. 1 is a current of electric detection hardware schematic diagram
Fig. 2 is current ripples figure and the square wave figure after hardware conversion of the present invention
Fig. 3 is the hardware components schematic diagram
Fig. 4 is that current ripples sketch map and judgement electric current are chosen sketch map
Fig. 5 chooses flow chart for judging electric current
Fig. 6 is a hardware block diagram
Fig. 7 is the motor reduced graph
Fig. 8 is the anti-pinch current diagram
Fig. 9 is a program flow diagram.
The specific embodiment
The present invention only need measure two parameters when real time execution.Be respectively the position height of vehicle window, the real-time current value of vehicle window motor in uphill process.And these two parameters all are based on current of electric, so the present invention only need measure the purpose that current of electric just can realize that anti-pinch is judged.Adopt single-chip microcomputer and the resistance of measuring size of current to realize measuring the function of motor current value in the present invention, need not adopt Hall element, reduced the complexity of cost and system.
In conjunction with Fig. 1,3, shown in 6, vehicle window ripple provided by the invention is prevented clip controller, is installed in the motorcar electric up-down vehicle window circuit, and it comprises: a processor 4, and it has mould/number conversion module 42, counting module 41, storage device and data processing module; A discharge circuit 2 that carries out lifting motor current value sampling, one of which end connect between motor 1 and the earth terminal, and this discharge circuit 2 is the sampled signal processing and amplifying, the mould/number conversion module 42 of other end signal output part connection processing device; And; The current ripples amount detection circuit 3 of a motor 1; Front end is that LPF delay circuit 32,33 is linked between the sampling resistor 21 and motor 1 of motor 1 power connection end; The rear end is linked into the counting module 41 of processor 4 through a comparator 33, and the output signal that comparator 33 will pass through behind the delay circuit 33 is compared with input current signal, irregular ripple signal is converted to the regular square-wave signal of cycle stability.
Said elements of the present invention utilizes the ripple amount detection circuit to detect the position of vehicle window, if the vehicle window position is in predetermined anti-pinch scope; Just sample through 2 pairs of motor 1 electric currents of discharge circuit, obtain the instantaneous value of electric current, compare by the standard value of data processing unit according to the relevant position of memory device stores; If difference then thinks to run into obstruction greater than the tolerance that allows, get into the anti-pinch state; Otherwise, if the anti-pinch state is not then carried out in the vehicle window position not in the anti-pinch scope of regulation.
At first, the present invention is based on current of electric and has judged whether that obstruction exists, thereby carries out the judgement whether motor carries out the anti-pinch action.If vehicle window is running into obstruction in the uphill process automatically, then drag torque T
0Can become big immediately.And T
0=T-T
2, wherein, T is the electromagnetic torque of armature end input current and generation, the mechanical load torque is T
2T overcomes various drag torque T
0Back and mechanical load torque T
2Balance each other.As drag torque T
0When existing obstruction to change, then electromagnetic torque T also can change.And T=C
T* Φ * Ia, wherein, C
TBe torque constant, by the electric machine structure decision, Φ is every utmost point magnetic flux, and Ia is an armature supply.It is thus clear that electromagnetic torque is proportional to every utmost point magnetic flux and armature supply.This electromagnetic torque formula is mechanical quantity T, and magnetic field amount Φ and electric weight Ia have connected.Therefore when electromagnetism changes, promptly be that armature supply changes.Just because of this, the present invention comes indirect detection armature electric current through the voltage that measurement seals in the resistance of electric motor loop.Can draw I=U/R by U=R*I, therefore as long as the measuring resistance voltage can obtain the armature electric current.Therefore also can judge whether the situation of clamping through detecting armature supply.If armature supply increases to a certain degree, then showing has obstruction to exist, and need carry out anti-pinch protection.
As shown in Figure 1, motor 1 is through sampling resistor 21 ground connection, so motor 1 electric current flows through this resistance, and the pressure drop that produces on this resistance is exactly the electric current that flows through this resistance divided by this resistance value, i.e. motor 1 electric current.This magnitude of voltage has been exaggerated 20 times through operational amplifier LM2904 and peripheral circuit.Because magnitude of voltage is too little, Direct Sampling causes error easily, so amplify earlier, sampling can reduce error again.Magnitude of voltage after the amplification is sampled through the mould/number conversion module 42 of the IS pin input single-chip microcomputer among the figure, and the value that obtains divided by 20 again divided by this resistance value, just obtains motor current value in being provided with by processor 4 (single-chip microcomputer) system again.
Except this key factor of electric current,, be different in each locational size of current owing to there are factors such as vehicle window weight and window frame resistance.Therefore judge that the vehicle window position also is considerable.Say that from the angle of machinery the motor rotation can drive the motion of wire rope, thereby drive the switching up and down of vehicle window.As everyone knows, motor rotates the electric current that produces and is actually ripple current, and some harmonic waves have just superposeed on electric current.And motor whenever rotates to an angle, and will produce the current ripples of some.In the present invention, suppose that motor rotates a circle, export N ripple, for a same Car window electric machine, N fixes.Therefore the current ripples quantity of the stroke of vehicle window motion and motor is linear.Through to the current ripples quantity Calculation, just can calculate the stroke of vehicle window motion, also just can confirm the position of vehicle window.Therefore can the position, accurately calculate the vehicle window position for judging whether that obstruction is an important factor, for the accuracy important influence of anti-pinch judgement.
The present invention is different from the hardware approach that generally adopts at present for the hardware approach that the current ripples quantity Calculation adopts.Because the ripple signal is irregular, be not easy to detect (seeing A line among Fig. 2 (a)), so the present invention converts irregular ripple signal to the regular square-wave signal of cycle stability.
The present invention has adopted two simple RC circuit and comparator to make to carry out the detection (see figure 3) of current ripples on hardware.At first, the low-pass filter circuit that current of electric is formed through sampling resistor 21 input filter resistances 321 and filter capacitor 322 is used for filter away high frequency noise.Because it is not steady that motor rotates, and is easy to generate high fdrequency component, and these high fdrequency components may impact the accuracy that current ripples detects.So at first should these unwanted high fdrequency components be filtered out.Resistance value and the capacitance of filter capacitor 322 of the present invention through regulating filter resistance 321, the frequency of the electric current of selecting to pass through.So just can avoid current ripples is filtered out.
Current signal after the high-frequency noise filtering is the delay circuit formed of input time delay resistance 331 and delay capacitor 332 again, makes and compares with input current signal through the output signal behind the delay circuit, produces certain phase delay.The size of phase delay is come common decision by the resistance value of time delay resistance 331 and the capacitance of delay capacitor 332.Therefore can reach the delay effect that needs through the excrements of regulating time delay resistance 331 and delay capacitor 332.
At last, with the two paths of signals input comparator.This two paths of signals is respectively through the filtered current signal s1 of high-frequency noise (seeing A line among Fig. 2 (a)) with through the current signal s2 after high-frequency noise filtering and the phase delay ((seeing another line among Fig. 2 (a))).S1 and s2 compare, if the s1 level is higher than s2, and comparator output high level.Otherwise, if the s1 level is lower than s2, the comparator output low level.So just, the square-wave signal of exportable cycle stability (seeing Fig. 2 (b)).The main thought of hardware solution of the present invention is, original signal and original delay of signals signal are compared.Thereby produce square wave and be used for the ripple detection.Thinking is novel, and is simple and reliable for structure, and certainty of measurement is high, and fault-tolerance is strong.
Current ripples is except being used to calculate the vehicle window position, and the current value that also is used to confirm to choose which point is as standard current value and real-time current value.What the present invention got is the current value of the crest place of current ripples as the judgement anti-pinch.Therefore, if the current value of sampling greater than the preceding once current value of sampling, and less than after once current value, this time current value is promptly as the current value of judging anti-pinch, i.e. standard current value or real-time current value.See Fig. 4 and Fig. 5
For getting which point, also be to need careful consideration as the current value of judging anti-pinch.The magnetic field of armature supply motor internal is the magnetic potential decision that is produced through electric current by Exciting Windings for Transverse Differential Protection.Magnetic field when unloaded is represented with function Bo (x); Unloaded magnetic flux density is that the close distribution waveform of unloaded magnetic is flat-topped wave along the situation of change of rotor outer circumference direction.And the close distribution waveform of armature magnetic is--" shape of a saddle " ripple.The armature close partial wave Ba of magnetic (x) ripple synthetic when the close distribution ripple of magnetic Bo (x) ripple and load obtained the synthetic magnetic condensation wave B γ (x) of air gap when the close distribution ripple of the magnetic during operation was zero load.That is: Bo (x)+Ba (x)=B γ (x); Flat-topped waveform+saddle waveform=ramp waveform (disregard when saturated this formula set up) that is to say in the week that motor turns over; Close at the diverse location magnetic of motor is different, is unequal at the diverse location magnetic flux size Φ of motor promptly also.If at the diverse location sample rate current of motor, then Φ changes, so just can't judge whether Ia changes, just can't judge also whether electromagnetic torque T changes.Therefore must guarantee that the standard current value and the real-time current value that compare must be to forward the value that same position is upsampled to at motor, and can not be the value of optional position in the one-period.Therefore the present invention puts the crest place of unified selection at current ripples with current sample; When that is to say each current sample all in the same position of motor; The position common flux also is identical, just can get rid of the magnetic flux interference that skewness produces in motor in this way.Specific practice of the present invention is when utilizing current ripples inspection vehicle window position, when sampling the maximum value of ripple current, to represent that this is the crest place of current ripples.During this time, just when the crest place of current ripples, note the real-time current value of this moment through measuring.
The present invention has self-learning function, is used for the record standard value.The present invention can be through self study button 5 control self-learning functions.So not only can the record standard value when dispatching from the factory initialization, and also can self-teaching when environment generation acute variation, the standard value among the Flash write down again.Way of the present invention is, and is as shown in Figure 6, behind the self study button 5 in pushing button; The signal that processor 4 (single-chip microcomputer) detects the pin that connects this button changes; Then output correlation signal is controlled motor and is risen automatically, at this moment must guarantee clear in the vehicle window uphill process.In the process that vehicle window rises automatically, utilize hardware configuration shown in Figure 1, come sample rate current and utilize the quantity of the hardware configuration calculating current ripples among Fig. 3 to calculate the vehicle window position.Single-chip microcomputer is noted the position of vehicle window in this process and at the current value of each position, and is stored among the Flash.This group vehicle window position of noting through self study and data of corresponding current value are called as " standard value ", and the real-time current value of the same vehicle window position that is used for sampling with real time execution afterwards compares carries out anti-pinch and judge.In initialization and user's use, can revise standard value through " self study button " at any time.Because after vehicle window uses a period of time, owing to reasons such as the change of the frictional force between glass for vehicle window and the rubber is big may cause that standard current value changes, so, to carry out " self study " at any time and help to revise at any time standard value, it is more accurate that anti-pinch is judged.
Motor at the volley; Can be reduced to a circuit of induced electromotive force, resistance, inductance composition; As shown in Figure 7;
representative is added in the voltage at motor two ends;
represents induced electromotive force; Then can obtain such formula
And induced electromotive force can be expressed as
Wherein,
is magnetic flux;
is rotating speed, and
is constant.
And motor torque can be expressed as
Wherein,
is torque, and
is constant.
When vehicle window is run into obstruction; The torque meeting increases; And
and
is constant, and the electric current
that then flows through motor can increase thereupon.And the voltage
that is added in the motor two ends is constant; Then can cause induced electromotive force
to diminish; Therefore, rotating speed
can diminish.Therefore the present invention changes and has judged whether obstruction through detecting electric current, whether needs the anti-pinch action.
Standard current value as shown in Figure 8, as to note during self study, current threshold are that standard value adds tolerance, when real-time current value during greater than current threshold (like the P1 position among the figure), then have been judged as obstruction and have existed, and need carry out the anti-pinch protection action.And the present invention needs the real-time current of continuous three samplings greater than threshold value, and just thinking has obstruction to exist, to prevent misoperation.
After the record standard value, when each vehicle window controller powers on, at first from Flash, read the vehicle window positional information of storing when vehicle window controller descends electricity behind preceding one action.When each vehicle window rises automatically, the position of all calculating vehicle window through the quantity of calculating current ripples.Whenever measure N square wave, the vehicle window position add 1 (motor N the ripple of output that whenever turn around, and since square wave quantity be with the ripple quantity of importing one to one, so N square wave N ripple just).Simultaneously, judge the anti-pinching car window scope whether is stipulating the vehicle window position.If vehicle window in the anti-pinch scope of regulation, then detects the real-time current of motor, and compares with the standard current value that is stored in corresponding vehicle window position among the Flash.If during greater than tolerance, just defining obstruction, the deviate that continuous three positions obtain exists.So just, improve the stability of algorithm.Also can reduce the probability of misoperation for adverse circumstances such as the road surfaces of jolting.When vehicle window is in manual rising, also need write down the position of vehicle window, when whenever detecting N square wave, the vehicle window position adds 1.When vehicle window was in the decline state, no matter be to descend automatically or manually descend, when whenever detecting N square wave, the vehicle window position subtracted 1.Can make the vehicle window position calculation accurate like this.Program flow diagram is seen Fig. 9.
The characteristics of control algolithm of the present invention are:
(1) the present invention is based on current ripples and measures the vehicle window position, and this method does not need Hall element, and cost needs the Hall element scheme low, and motor is installed simple.
(2) current ripples of the present invention detects the hardware approach that adopts, and compares with present popular hardware approach, and very big advantage is arranged.What at present popular hardware approach adopted is bandpass filter, causes ripple frequency unstable easily, thereby makes ripple be difficult to from electric current, separate.The elder generation that the present invention proposes carries out time delay with original ripple signal, again with delay time signal and primary signal input comparator, obtains the method for square-wave signal, just can avoid such shortcoming.
(2) the present invention's employing judges whether to clamp phenomenon through the method for the running current value of measurement Car window electric machine, and anti-pinch is reliable for effect.
(3) the present invention has self-learning function, can be at any time through write down the current standard value of motor operation again by key control.
(4) the present invention selects to have carried out meticulous design to the time point of the sampling of Car window electric machine running current, and the current sample time point has been chosen in the crest place of current ripples, has avoided the inaccurate of current sample.
Only the above person is merely preferred embodiment of the present invention, when not limiting practical range of the present invention with this; So, allly change and modify according to claim of the present invention and the simple equivalent done of creation description, all should still belong in the scope that patent of the present invention contains.
Claims (10)
1. the anti-clip controller of vehicle window ripple is installed in the motorcar electric up-down vehicle window circuit, it is characterized in that comprising:
A processor, it has mould/number conversion module, counting module, storage device and data processing module;
A discharge circuit that carries out lifting motor current value sampling, one of which end connect between motor and the earth terminal, and this discharge circuit is the sampled signal processing and amplifying, the mould/number conversion module of other end signal output part connection processing device;
The current ripples amount detection circuit of a motor; Front end is linked between the sampling resistor and motor of motor power connection end for the LPF delay circuit; The rear end is linked into the counting module of processor through a comparator; The output signal that comparator will pass through behind the delay circuit is compared with input current signal, irregular ripple signal is converted to the regular square-wave signal of cycle stability;
Utilize the position of ripple amount detection circuit detection vehicle window, if the vehicle window position is in predetermined anti-pinch scope, just through discharge circuit current of electric is sampled; Obtain the instantaneous value of electric current, compare, if difference is greater than the tolerance that allows by the standard value of data processing unit according to the relevant position of memory device stores; Then think to run into obstruction, get into the anti-pinch state, otherwise; If the anti-pinch state in the anti-pinch scope of regulation, is not then carried out in the vehicle window position.
2. vehicle window ripple as claimed in claim 1 is prevented clip controller, it is characterized in that: in the said discharge circuit, the discharge circuit incoming end is connected between motor and the sampling resistor, and can cross the mould/number conversion module of the IS pin input processor of discharge circuit.
3. vehicle window ripple as claimed in claim 1 is prevented clip controller, it is characterized in that: said discharge circuit is LM2904 and necessary peripheral circuit.
4. vehicle window ripple as claimed in claim 1 is prevented clip controller; It is characterized in that: said testing circuit front end is the sampling of two RC circuital current ripples; The low-pass filter circuit that current of electric is formed through sampling resistor input filter resistance and filter capacitor; Current signal after the high-frequency noise filtering is the delay circuit formed of input time delay resistance and delay capacitor again, makes and compares with input current signal through the output signal behind the delay circuit, produces certain phase delay.
5. vehicle window ripple as claimed in claim 1 is prevented clip controller, it is characterized in that: the comparator of said testing circuit is LM2903 and necessary peripheral circuit.
6. like the anti-clip controller of each described vehicle window ripple of claim 1-5, it is characterized in that: said storage device is the Flash flash memory.
7. like the anti-clip controller of each described vehicle window ripple of claim 1-5, it is characterized in that: processor is a single-chip microcomputer, and it is connected with the self study button whether a control writes down the current of electric standard value again.
8. vehicle window ripple anti-clip control method is applied to it is characterized in that step is in the motorcar electric up-down vehicle window circuit:
(1) at the vehicle window initial phase, should guarantee can not run into obstruction in the vehicle window uphill process, note vehicle window current value of each position in uphill process as standard value this moment;
(2) when the vehicle window real time execution, utilize ripple to detect the position of vehicle window, whether the inspection vehicle window position is in the anti-pinch scope of regulation;
(3) if vehicle window in the anti-pinch scope of regulation, then through current of electric is sampled, can obtain two parameters from current sampling data; One of which; Through the position that current ripples calculates vehicle window, its two, judge the crest value of current ripples; Obtain the instantaneous value of electric current, compare with the standard value of relevant position;
(4) if the difference of both continuous three positions greater than the tolerance that allows, then thinks to run into obstruction, get into the anti-pinch state; Otherwise, if the anti-pinch state is not then carried out in the vehicle window position not in the anti-pinch scope of regulation.
9. vehicle window ripple anti-clip control method as claimed in claim 8; In the said step 3; The crest place of power taking flow liner ripple is as the real-time current value of judging anti-pinch, if the current value of sampling greater than the preceding once current value of sampling, and less than after once current value; This time current value is promptly as the current value of judging anti-pinch, i.e. real-time current value.
10. like claim 8 or 9 described vehicle window ripple anti-clip control methods, in the said step 3, when utilizing current ripples inspection vehicle window position; When sampling the maximum value of ripple current; Represent that this is the crest place of current ripples, during this time, just when the crest place of current ripples; Note the real-time current value of this moment, to get rid of the magnetic flux interference that skewness produces in motor through measuring.
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| CN103711401A (en) * | 2013-12-06 | 2014-04-09 | 广西科技大学 | Anti-pinch control method and anti-pinch control system for electric window of automobile |
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| CN114509245A (en) * | 2020-11-17 | 2022-05-17 | Aptiv技术有限公司 | Method and device for detecting possible clamping |
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| CN103711402B (en) * | 2013-12-06 | 2016-01-20 | 广西科技大学 | The anti-clip control method of automobile electric car-window and system |
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