CN108387380A - Method and system for detecting lifting smoothness of automobile electric window - Google Patents
Method and system for detecting lifting smoothness of automobile electric window Download PDFInfo
- Publication number
- CN108387380A CN108387380A CN201810074209.0A CN201810074209A CN108387380A CN 108387380 A CN108387380 A CN 108387380A CN 201810074209 A CN201810074209 A CN 201810074209A CN 108387380 A CN108387380 A CN 108387380A
- Authority
- CN
- China
- Prior art keywords
- motor
- current
- ripple frequency
- stable interval
- direct current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 132
- 230000008569 process Effects 0.000 claims abstract description 89
- 230000008859 change Effects 0.000 claims abstract description 55
- 230000001174 ascending effect Effects 0.000 claims abstract description 54
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 239000005357 flat glass Substances 0.000 claims abstract description 5
- 238000005070 sampling Methods 0.000 claims description 18
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Window Of Vehicle (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
The invention is suitable for the technical field of motor control, and provides a method and a system for detecting the lifting smoothness of an electric vehicle window of an automobile, wherein the method comprises the following steps: the window glass is driven to rotate, and the window glass is controlled to ascend and descend; detecting direct-current components and motor ripple frequencies of motor armature currents of the window motor in a stable interval of an ascending process and a stable interval of a descending process; judging whether the lifting smoothness of the electric vehicle window reaches a set standard or not based on the direct-current component change value of the motor armature current and the change rate of the motor ripple frequency; the smoothness of the motor in each short time period in the ascending and descending process of the window can be represented through the direct current component variation of the motor armature current and the motor ripple frequency variation rate in a short time, and the smoothness of the motor in the whole ascending and descending process of the window can be represented through the direct current component variation of the motor armature current and the motor ripple frequency variation rate in the whole stable interval; the detection result of the smoothness of the car window is more accurate.
Description
Technical Field
The invention belongs to the technical field of electric vehicle windows, and provides a method and a system for detecting the lifting smoothness of an automobile electric vehicle window.
Background
With the continuous and rapid development of the automobile industry in China, the quality requirements of consumers on the automobile body electrical system are higher and higher. The system not only requires humanized design and reliable functions, but also provides new requirements for the aspects of vibration, noise, control and the like which are easy to perceive. In the aspect of the control of the car window lifting system, the hand-operated car window lifting is changed into the electric car window lifting, the operation convenience and reliability are greatly improved,
the problems of abnormal sound, clamping stagnation, shaking and the like of the electric vehicle door lifting system due to poor design and matching are increasingly highlighted, and the problems that the detection is not accurate due to the fact that the smoothness of the lifting of a vehicle window motor is qualitatively detected in the prior art through a visual inspection mode exist.
Disclosure of Invention
The embodiment of the invention provides a method for detecting the lifting smoothness of an automobile electric window, and aims to solve the problem that the detection is not accurate in the lifting smoothness detection of an existing window motor.
The invention is realized in this way, a method for detecting the lifting smoothness of an automobile electric window, which comprises the following steps:
s1, driving the window motor to rotate, and controlling the window glass to ascend and descend;
s2, detecting the direct current component and the motor ripple frequency of the motor armature current of the window motor in the stable interval of the ascending process and the stable interval of the descending process;
s3, judging whether the lifting smoothness of the electric window reaches a set standard or not based on the change value of the direct current component of the motor armature current and the change rate of the motor ripple frequency;
the stable interval refers to a time interval corresponding to the operation stage of the motor.
Further, if the change value of the direct current component of the armature current of the motor meets the conditions 1 and 2 and the change rate of the ripple frequency of the motor meets the conditions 3 and 4, determining that the smoothness of the corresponding motor window meets the set standard;
condition 1: in a stable interval of an ascending process and a stable interval of a descending process, the maximum value of the direct current component variation in the motor armature current within any continuous 100ms is smaller than a first current threshold;
condition 2: in the stable interval of the ascending process and the stable interval of the descending process, the total variation of the direct current component of the motor armature current is smaller than a second current threshold;
condition 3: in the stable interval of the ascending process and the stable interval of the descending process, the maximum value of the change rate of the current ripple frequency of the motor in any continuous 100ms is smaller than a first frequency threshold;
condition 4: and in the stable interval of the ascending process and the stable interval of the descending process, the total change rate of the current ripple frequency of the motor is smaller than a second frequency threshold value.
Further, the method for acquiring the maximum value of the variation of the direct current component in the armature current of the motor within any continuous 100ms comprises the following steps:
s411, acquiring voltages at two ends of a sampling resistor at fixed time, and calculating a direct current component of the armature current of the motor by the voltage of the sampling resistor, wherein the sampling resistor is connected in series in a working circuit of the motor, or the direct current component of the armature current of the motor is acquired at fixed time through a current sensor;
s412, obtaining the variation of the direct current component of the motor armature current in any continuous 100ms time through the difference value of the direct current components of the motor armature current in the previous and the next times;
and S413, acquiring the maximum value of the motor armature current direct-current component in continuous 100 ms.
Further, the method for acquiring the total variation of the direct current component of the armature current of the motor comprises the following steps:
s421, acquiring voltages at two ends of a sampling resistor at fixed time, calculating a direct current component of the armature current of the motor by the voltage of the sampling resistor, wherein the sampling resistor is connected in series in a working circuit of the motor, or acquiring the direct current component of the armature current of the motor at fixed time through a current sensor;
s422, obtaining the maximum value I of the direct current component of the motor armature current in the stable interval of the whole ascending processmax-uAnd minimum value of DC component I of motor armature currentmin-d(ii) a Obtaining the maximum value I of the DC component of the motor armature current in the stable interval of the whole descending processmax-dAnd minimum value of DC component I of motor armature currentmin-d；
S423, calculating the maximum value I of the DC component of the armature current of the motormax-uMinimum value I of DC component of armature current of motormin-uCalculating the maximum value I of the DC component of the armature current of the motormax-dMinimum value I of DC component of armature current of motormin-dThe maximum value of the two difference values is the total variable quantity of the direct current component of the armature current of the motor.
Further, the method for acquiring the maximum value of the change rate of the ripple frequency of the motor current in any continuous 100ms in the stable interval comprises the following steps:
s431, detecting the time length T of N motor ripples at regular time;
s432, based on formula (T)x-Tx+1)/TxCalculating the ripple variation frequency, T, of the motorxFor the xth detection of the duration, T, of the occurrence of N motor ripplesx+1Detecting the duration of N motor ripples for the (x + 1) th time, wherein the value of x is a positive integer;
and S433, acquiring the maximum value of the motor ripple change frequency within any continuous 100 ms.
Further, the method for acquiring the total change rate of the current ripple frequency of the motor comprises the following steps:
s441, detecting the time length T of N motor ripples at regular time, wherein the ripple frequency of the motor is N/T;
s442, obtaining the maximum value F of the ripple frequency of the motor in the stable interval of the ascending processmax-uAnd minimum value F of motor current ripple frequency in steady intervalmin-u(ii) a Obtaining the maximum value F of the ripple frequency of the motor in the stable interval of the descending processmax-dAnd minimum value F of motor current ripple frequency in steady intervalmin-d；
S443, calculating a maximum ripple frequency F of the motormax-uWith minimum value of ripple frequency F of motor currentmin-uCalculating the maximum value F of ripple frequency of the motormax-dWith minimum value of ripple frequency F of motor currentmin-dThe maximum value of the two difference values is the total change rate of the ripple frequency of the motor current.
The invention is realized in this way, a method for detecting the lifting smoothness of an automobile electric window, the system comprises:
a vehicle-mounted power supply, a detection device connected with the vehicle-mounted power supply, and four vehicle window motors connected with the detection device,
the detection device includes: the device comprises a power supply control unit, a direct current component detection unit, a direct current component variation calculation unit connected with the direct current component detection unit, a motor ripple frequency acquisition unit, a ripple frequency variation rate calculation unit connected with the motor ripple frequency acquisition unit, a ride comfort judgment unit connected with the direct current component variation calculation unit and the ripple frequency variation rate calculation unit, and a display unit connected with the ride comfort judgment unit; wherein,
the power supply control unit is used for controlling the vehicle-mounted power supply to supply power to the four window motors;
the direct current component detection unit is used for regularly collecting the direct current components of the motor armature current in the stable interval of the ascending process and the stable interval of the descending process;
the direct current component variable quantity calculating unit is used for respectively calculating direct current component variable values of the motor armature current in a stable interval of an ascending process and a stable interval of a descending process for the direct current component in the motor armature current collected at regular time;
the motor ripple frequency acquisition unit is used for acquiring the motor ripple frequency in a stable interval of the ascending process and a stable interval of the descending process at regular time;
the ripple frequency change rate calculation unit is used for respectively calculating the change rate of the motor ripple frequency in the stable interval of the ascending process and the stable interval of the descending process based on the ripple frequency acquired at regular time;
the smoothness judgment unit is used for judging the smoothness of the four motors based on the direct-current component change value of the motor armature current output by the direct-current component change amount calculation unit and the change rate of the motor ripple frequency output by the ripple frequency change rate calculation unit;
and the output unit is used for respectively outputting the smoothness detection results of the four motors.
Further, if the direct current component variation value of the motor armature current meets the conditions 1 and 2 and the variation rate of the motor ripple frequency meets the conditions 3 and 4, the smoothness judgment unit determines that the smoothness of the corresponding motor window meets the set standard;
condition 1: in a stable interval of an ascending process and a stable interval of a descending process, the maximum value of the direct current component variation in the motor armature current within any continuous 100ms is smaller than a first current threshold;
condition 2: in the stable interval of the ascending process and the stable interval of the descending process, the total variation of the direct current component of the motor armature current is smaller than a second current threshold;
condition 3: in the stable interval of the ascending process and the stable interval of the descending process, the maximum value of the change rate of the current ripple frequency of the motor in any continuous 100ms is smaller than a first frequency threshold;
condition 4: and in the stable interval of the ascending process and the stable interval of the descending process, the total change rate of the current ripple frequency of the motor is smaller than a second frequency threshold value.
The method for detecting the lifting smoothness of the electric window of the automobile provided by the embodiment of the invention has the following beneficial effects:
1) the smoothness of the lifting of the electric car window can be accurately detected in a quantitative mode.
2) The smoothness of the motor in each short time period in the ascending and descending processes of the window can be represented by the direct-current component variation of the motor armature current and the motor ripple frequency variation rate in a short time, and the smoothness of the motor in the whole ascending and descending processes of the window can be represented by the direct-current component variation of the motor armature current and the motor ripple frequency variation rate in the whole stable interval; the detection result of the smoothness of the car window is more accurate and reasonable.
Drawings
Fig. 1 is a flowchart of a method for detecting the lifting smoothness of an automotive power window according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a system for detecting the lifting smoothness of an automotive power window according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a flowchart of a method for detecting the lifting smoothness of an automotive power window, which includes the following steps:
s1, driving the window motor to rotate, controlling the window glass to ascend and descend,
s2, detecting a direct current component and a motor ripple frequency in a motor armature current of the window motor in a stable interval of ascending and descending processes;
in the embodiment of the invention, the ascending process and the descending process of the window motor can be divided into three stages: the method comprises a starting stage, an operating stage and a braking stage, wherein normal sudden changes exist in the motor armature current in the starting stage and the braking stage, the motor armature current in the operating stage is stable in a normal state, the motor operating stage corresponds to a stable interval of the motor armature current, and a period from 200ms after the motor is started to 200ms before the locked rotor stops is generally called as a stable interval.
And S3, judging whether the lifting smoothness of the power window reaches a set standard or not based on the change value of the direct current component in the armature current of the motor and the change rate of the ripple frequency of the motor.
The direct current component is a motor current value obtained after the armature current of the direct current motor filters the motor current ripple component when the direct current motor ascends or descends to rotate, and the motor ripple frequency is the direct current motor armature current amplitude fluctuation frequency (ripple frequency) caused by rotor commutation when the direct current motor ascends or descends to rotate, so that the motor blocking amplitude is respectively and indirectly reflected.
In the embodiment of the invention, if the change value of the direct current component in the armature current of the motor meets the conditions 1 and 2 and the change rate of the ripple frequency of the motor meets the conditions 3 and 4, the smoothness of the window of the motor is determined to meet the set standard;
condition 1: in a stable interval of an ascending process and a stable interval of a descending process, the maximum value of the direct current component variation in the motor armature current within any continuous 100ms is smaller than a first current threshold;
in the embodiment of the invention, the method for acquiring the maximum value of the variation of the direct current component in the armature current of the motor within any continuous 100ms comprises the following steps:
s411, acquiring voltages at two ends of a sampling resistor at regular time, calculating a direct current component of the armature current of the motor by the voltage of the sampling resistor, wherein the sampling resistor is connected in series in a working circuit of the motor, or directly acquiring the direct current component of the armature current of the motor through a current sensor;
s412, calculating the difference value of the direct current components of the armature currents of the motor in the previous and the next times to obtain the direct current component of the motor in any continuous 100ms time;
and S413, acquiring the maximum value of the direct current component of the motor within continuous 100 ms.
Condition 2: in the stable interval of the ascending process and the stable interval of the descending process, the total variation of the direct current component of the motor armature current is smaller than a second current threshold;
in the embodiment of the invention, the method for acquiring the total variable quantity of the direct current component of the armature current of the motor comprises the following steps:
s421, collecting voltages at two ends of a sampling resistor at fixed time, calculating a direct current component of the armature current of the motor by the voltage of the sampling resistor, wherein the sampling resistor is connected in series in a working circuit of the motor, or directly collecting the direct current component of the armature current of the motor through a current sensor;
s422, obtaining the maximum value I of the direct current component of the motor armature current in the stable interval of the whole ascending processmax-uAnd minimum value of DC component I of motor armature currentmin-uObtaining the maximum value I of the DC component of the motor armature current in the stable interval of the whole descending processmax-dAnd minimum value of DC component I of motor armature currentmin-d；
S423, calculating the difference (I)max-u-Imin-u) And (I)max-d-Imin-d) And the maximum value of the two difference values is the total variable quantity of the DC component of the motor armature current.
In an embodiment of the present invention, the first current threshold is less than the second current threshold, and the first current threshold and the second current threshold are determined based on experiments.
Condition 3: in the stable interval of the ascending process and the stable interval of the descending process, the maximum value of the change rate of the current ripple frequency of the motor in any continuous 100ms is smaller than a first frequency threshold;
the method for acquiring the maximum value of the change rate of the ripple frequency of the motor current in any continuous 100ms comprises the following steps:
s431, detecting the duration T of N motor ripples at regular time, for example, detecting once every 10 ms;
s432, based on formula (T)x-Tx+1)/TxCalculating the ripple variation frequency, T, of the motorxFor the xth detection of the duration, T, of the occurrence of N motor ripplesx+1Detecting the duration of N motor ripples for the (x + 1) th time;
and S433, acquiring the maximum value of the motor ripple change frequency within any continuous 100 ms.
Condition 4: and in the stable interval of the ascending process and the stable interval of the descending process, the total change rate of the current ripple frequency of the motor is smaller than a second frequency threshold value.
In the embodiment of the invention, the method for acquiring the total change rate of the current ripple frequency of the motor comprises the following steps:
s441, detecting the time length T of N motor ripples at regular time, wherein the ripple frequency of the motor is N/T;
s442, obtaining the maximum value F of the ripple frequency of the motor in the stable interval in the rising processmax-uAnd minimum value F of motor current ripple frequency in steady intervalmin-u(ii) a Obtaining the maximum value F of the ripple frequency of the motor in the stable interval in the rising processmax-dAnd minimum value F of motor current ripple frequency in steady intervalmin-d；
S443, calculating the difference (F)max-u-Fmin-u) And (F)max-d-Fmin-d) The maximum value of the two difference values is the total change rate of the ripple frequency of the motor current.
In the embodiment of the present invention, the first frequency threshold is smaller than the second frequency threshold, and both the first frequency threshold and the second frequency threshold are determined based on experimental data, and a percentage of the standard ripple frequency is generally used as the first frequency threshold and the second frequency threshold.
The method for detecting the lifting smoothness of the electric window of the automobile provided by the embodiment of the invention has the following beneficial effects:
1) the smoothness of the lifting of the electric car window can be accurately detected in a quantitative mode.
2) The smoothness of the motor in each short time period in the ascending and descending processes of the window can be represented by the direct-current component variation of the motor armature current and the motor ripple frequency variation rate in a short time, and the smoothness of the motor in the whole ascending and descending processes of the window can be represented by the direct-current component variation of the motor armature current and the motor ripple frequency variation rate in the whole stable interval; the detection result of the smoothness of the car window is more accurate and reasonable.
Fig. 2 is a schematic structural diagram of a system for detecting smoothness of an automotive power window lifter according to an embodiment of the present invention, and for convenience of description, only relevant portions of the system are shown in the embodiment of the present invention.
The system comprises:
a vehicle-mounted power supply, a detection device connected with the vehicle-mounted power supply, and four vehicle window motors connected with the detection device,
the detection device includes: a power supply control unit, a DC component detection unit, a DC component variation calculation unit connected with the DC component detection unit, a motor ripple frequency acquisition unit, a ripple frequency variation rate calculation unit connected with the motor ripple frequency acquisition unit, a smoothness judgment unit connected with the DC component variation calculation unit and the ripple frequency variation rate calculation unit, and a display unit connected with the smoothness judgment unit,
the power supply control unit is used for controlling the vehicle-mounted power supply to supply power to the four window motors;
the direct current component detection unit is used for regularly collecting the direct current components of the motor armature current in the stable interval of the ascending process and the stable interval of the descending process;
the direct current component variable quantity calculating unit is used for respectively calculating direct current component variable values of the motor armature current in a stable interval of an ascending process and a stable interval of a descending process for the direct current component in the motor armature current collected at regular time;
the motor ripple frequency acquisition unit is used for acquiring the motor ripple frequency in a stable interval of the ascending process and a stable interval of the descending process at regular time;
the ripple frequency change rate calculation unit is used for respectively calculating the change rate of the motor ripple frequency in the stable interval of the ascending process and the stable interval of the descending process based on the ripple frequency acquired at regular time;
the smoothness judgment unit is used for judging the smoothness of the four motors based on the direct-current component change value of the motor armature current output by the direct-current component change amount calculation unit and the change rate of the motor ripple frequency output by the ripple frequency change rate calculation unit;
and the output unit is used for respectively outputting the smoothness detection results of the four motors.
In the embodiment of the invention, if the change value of the direct current component of the motor armature current meets the conditions 1 and 2 and the change rate of the motor ripple frequency meets the conditions 3 and 4, the smoothness judgment unit determines that the smoothness of the corresponding motor window meets the set standard;
condition 1: in a stable interval of an ascending process and a stable interval of a descending process, the maximum value of the direct current component variation in the motor armature current within any continuous 100ms is smaller than a first current threshold;
condition 2: in the stable interval of the ascending process and the stable interval of the descending process, the total variation of the direct current component of the motor armature current is smaller than a second current threshold;
condition 3: in the stable interval of the ascending process and the stable interval of the descending process, the maximum value of the change rate of the current ripple frequency of the motor in any continuous 100ms is smaller than a first frequency threshold;
condition 4: and in the stable interval of the ascending process and the stable interval of the descending process, the total change rate of the current ripple frequency of the motor is smaller than a second frequency threshold value.
The system for detecting the lifting smoothness of the electric window of the automobile provided by the embodiment of the invention has the following beneficial effects:
1) the smoothness of the lifting of the electric car window can be accurately detected in a quantitative mode.
2) The smoothness of the motor in each short time period in the ascending and descending processes of the window can be represented by the direct-current component variation of the motor armature current and the motor ripple frequency variation rate in a short time, and the smoothness of the motor in the whole ascending and descending processes of the window can be represented by the direct-current component variation of the motor armature current and the motor ripple frequency variation rate in the whole stable interval; the detection result of the smoothness of the car window is more accurate and reasonable.
The present invention is not limited to the above-described preferred embodiments, but rather, the present invention is intended to cover all modifications, equivalents, and improvements falling within the spirit and scope of the present invention.
Claims (8)
1. The method for detecting the lifting smoothness of the electric window of the automobile is characterized by comprising the following steps of:
s1, driving the window motor to rotate, and controlling the window glass to ascend and descend;
s2, detecting the direct current component and the motor ripple frequency of the motor armature current of the window motor in the stable interval of the ascending process and the stable interval of the descending process;
s3, judging whether the lifting smoothness of the electric window reaches a set standard or not based on the change value of the direct current component of the motor armature current and the change rate of the motor ripple frequency;
the stable interval refers to a time interval corresponding to the operation stage of the motor.
2. The method for detecting the lifting smoothness of an automotive power window according to claim 1,
if the direct-current component variation value of the motor armature current meets the conditions 1 and 2 and the variation rate of the motor ripple frequency meets the conditions 3 and 4, determining that the smoothness of the corresponding motor window meets the set standard;
condition 1: in a stable interval of an ascending process and a stable interval of a descending process, the maximum value of the direct current component variation in the motor armature current within any continuous 100ms is smaller than a first current threshold;
condition 2: in the stable interval of the ascending process and the stable interval of the descending process, the total variation of the direct current component of the motor armature current is smaller than a second current threshold;
condition 3: in the stable interval of the ascending process and the stable interval of the descending process, the maximum value of the change rate of the current ripple frequency of the motor in any continuous 100ms is smaller than a first frequency threshold;
condition 4: and in the stable interval of the ascending process and the stable interval of the descending process, the total change rate of the current ripple frequency of the motor is smaller than a second frequency threshold value.
3. The method for detecting the lifting smoothness of the power window of the automobile as claimed in claim 2, wherein the method for obtaining the maximum value of the variation of the direct current component in the armature current of the motor within any continuous 100ms comprises the following steps:
s411, acquiring voltages at two ends of a sampling resistor at fixed time, and calculating a direct current component of the armature current of the motor by the voltage of the sampling resistor, wherein the sampling resistor is connected in series in a working circuit of the motor, or the direct current component of the armature current of the motor is acquired at fixed time through a current sensor;
s412, obtaining the variation of the direct current component of the motor armature current in any continuous 100ms time through the difference value of the direct current components of the motor armature current in the previous and the next times;
and S413, acquiring the maximum value of the motor armature current direct-current component in continuous 100 ms.
4. The method for detecting the lifting smoothness of the electric window of the automobile as claimed in claim 2, wherein the method for obtaining the total variation of the direct current component of the armature current of the motor comprises the following steps:
s421, acquiring voltages at two ends of a sampling resistor at fixed time, calculating a direct current component of the armature current of the motor by the voltage of the sampling resistor, wherein the sampling resistor is connected in series in a working circuit of the motor, or acquiring the direct current component of the armature current of the motor at fixed time through a current sensor;
s422, obtaining the maximum value I of the direct current component of the motor armature current in the stable interval of the whole ascending processmax-uAnd minimum value of DC component I of motor armature currentmin-uObtaining the maximum value I of the direct current component of the motor armature current in the stable interval of the whole descending processmax-dAnd minimum value of DC component I of motor armature currentmin-d；
S423, respectively calculating the maximum value I of the DC component of the armature current of the motormax-uMinimum value I of DC component of armature current of motormin-uAnd the maximum value I of the DC component of the motor armature currentmax-dMinimum value I of DC component of armature current of motormin-dThe maximum value of the two difference values is the total variable quantity of the direct current component of the armature current of the motor.
5. The method for detecting the lifting smoothness of the electric window of the automobile as claimed in claim 2, wherein the method for acquiring the maximum value of the variation rate of the ripple frequency of the motor current in any continuous 100ms in the stable interval comprises the following steps:
s431, detecting the time length T of N motor ripples at regular time;
s432, based on formula (T)x-Tx+1)/TxCalculating the ripple variation frequency, T, of the motorxN motor ripples appear for the xth detectionDuration of (D), Tx+1Detecting the duration of N motor ripples for the (x + 1) th time, wherein the value of x is a positive integer;
and S433, acquiring the maximum value of the motor ripple change frequency within any continuous 100 ms.
6. The method for detecting the lifting smoothness of the electric window of the automobile as claimed in claim 2, wherein the method for obtaining the total change rate of the ripple frequency of the motor current comprises the following steps:
s441, detecting the time length T of N motor ripples at regular time, wherein the ripple frequency of the motor is N/T;
s442, obtaining the maximum value F of the ripple frequency of the motor in the stable interval of the ascending processmax-uAnd minimum value F of motor current ripple frequency in steady intervalmin-uObtaining the maximum value F of the ripple frequency of the motor in the stable interval of the descending processmax-dAnd minimum value F of motor current ripple frequency in steady intervalmin-d；
S443, respectively calculating the maximum value F of the ripple frequency of the motormax-uWith minimum value of ripple frequency F of motor currentmin-uDifference value of (d) and maximum value of ripple frequency F of motormax-dWith minimum value of ripple frequency F of motor currentmin-dThe maximum value of the two difference values is the total change rate of the ripple frequency of the motor current.
7. A detection system for detecting the lifting smoothness of an automobile power window is characterized by comprising:
a vehicle-mounted power supply, a detection device connected with the vehicle-mounted power supply, and four vehicle window motors connected with the detection device,
the detection device includes: the device comprises a power supply control unit, a direct current component detection unit, a direct current component variation calculation unit connected with the direct current component detection unit, a motor ripple frequency acquisition unit, a ripple frequency variation rate calculation unit connected with the motor ripple frequency acquisition unit, a ride comfort judgment unit connected with the direct current component variation calculation unit and the ripple frequency variation rate calculation unit, and a display unit connected with the ride comfort judgment unit; wherein,
the power supply control unit is used for controlling the vehicle-mounted power supply to supply power to the four window motors;
the direct current component detection unit is used for regularly collecting the direct current components of the motor armature current in the stable interval of the ascending process and the stable interval of the descending process;
the direct current component variable quantity calculating unit is used for respectively calculating direct current component variable values of the motor armature current in a stable interval of an ascending process and a stable interval of a descending process for the direct current component in the motor armature current collected at regular time;
the motor ripple frequency acquisition unit is used for acquiring the motor ripple frequency in a stable interval of the ascending process and a stable interval of the descending process at regular time;
the ripple frequency change rate calculation unit is used for respectively calculating the change rate of the motor ripple frequency in the stable interval of the ascending process and the stable interval of the descending process based on the ripple frequency acquired at regular time;
the smoothness judgment unit is used for judging the smoothness of the four motors based on the direct-current component change value of the motor armature current output by the direct-current component change amount calculation unit and the change rate of the motor ripple frequency output by the ripple frequency change rate calculation unit;
and the output unit is used for respectively outputting the smoothness detection results of the four motors.
8. The system for detecting the lifting smoothness of the power window of the automobile as claimed in claim 7, wherein if the variation value of the direct current component of the armature current of the motor satisfies the condition 1 and the condition 2, and the variation rate of the ripple frequency of the motor satisfies the condition 3 and the condition 4, the smoothness determining unit determines that the smoothness of the corresponding motor window meets the set standard;
condition 1: in a stable interval of an ascending process and a stable interval of a descending process, the maximum value of the direct current component variation in the motor armature current within any continuous 100ms is smaller than a first current threshold;
condition 2: in the stable interval of the ascending process and the stable interval of the descending process, the total variation of the direct current component of the motor armature current is smaller than a second current threshold;
condition 3: in the stable interval of the ascending process and the stable interval of the descending process, the maximum value of the change rate of the current ripple frequency of the motor in any continuous 100ms is smaller than a first frequency threshold;
condition 4: and in the stable interval of the ascending process and the stable interval of the descending process, the total change rate of the current ripple frequency of the motor is smaller than a second frequency threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810074209.0A CN108387380B (en) | 2018-01-25 | 2018-01-25 | Method and system for detecting lifting smoothness of automobile electric window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810074209.0A CN108387380B (en) | 2018-01-25 | 2018-01-25 | Method and system for detecting lifting smoothness of automobile electric window |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108387380A true CN108387380A (en) | 2018-08-10 |
| CN108387380B CN108387380B (en) | 2020-01-10 |
Family
ID=63076452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810074209.0A Active CN108387380B (en) | 2018-01-25 | 2018-01-25 | Method and system for detecting lifting smoothness of automobile electric window |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108387380B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261135A (en) * | 2019-07-02 | 2019-09-20 | 张家港万诚科技股份有限公司 | Detection method for glass-frame riser |
| CN113155506A (en) * | 2021-05-11 | 2021-07-23 | 成都天仁民防科技有限公司 | Detection method for lifting non-stationarity of flood-proof wind booth |
| CN113252358A (en) * | 2021-05-12 | 2021-08-13 | 东风电子科技股份有限公司 | Vehicle window state detection method, system, device, processor and storage medium thereof based on current gradient direction change dynamics |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080052738A (en) * | 2006-12-08 | 2008-06-12 | 현대자동차주식회사 | Stopper for door window regulator in vehicle |
| CN102589901A (en) * | 2012-03-07 | 2012-07-18 | 奇瑞汽车股份有限公司 | Electric power window lifting test bed and test method |
| CN102635288A (en) * | 2012-01-06 | 2012-08-15 | 陈雅莹 | Ripple wave anti-clamping controller of car window and control method |
| CN105258954A (en) * | 2015-11-10 | 2016-01-20 | 长春理工大学 | Car window test system |
| CN206440786U (en) * | 2016-12-28 | 2017-08-25 | 郑州日产汽车有限公司 | Automotive window electric-examination device |
-
2018
- 2018-01-25 CN CN201810074209.0A patent/CN108387380B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080052738A (en) * | 2006-12-08 | 2008-06-12 | 현대자동차주식회사 | Stopper for door window regulator in vehicle |
| CN102635288A (en) * | 2012-01-06 | 2012-08-15 | 陈雅莹 | Ripple wave anti-clamping controller of car window and control method |
| CN102589901A (en) * | 2012-03-07 | 2012-07-18 | 奇瑞汽车股份有限公司 | Electric power window lifting test bed and test method |
| CN105258954A (en) * | 2015-11-10 | 2016-01-20 | 长春理工大学 | Car window test system |
| CN206440786U (en) * | 2016-12-28 | 2017-08-25 | 郑州日产汽车有限公司 | Automotive window electric-examination device |
Non-Patent Citations (1)
| Title |
|---|
| 陈晓峰 等: "ACRYLIC(PMMA)塑料升降车窗的研究", 《汽车工艺与材料》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261135A (en) * | 2019-07-02 | 2019-09-20 | 张家港万诚科技股份有限公司 | Detection method for glass-frame riser |
| CN110261135B (en) * | 2019-07-02 | 2021-09-28 | 张家港万诚科技股份有限公司 | Detection method for glass lifter |
| CN113155506A (en) * | 2021-05-11 | 2021-07-23 | 成都天仁民防科技有限公司 | Detection method for lifting non-stationarity of flood-proof wind booth |
| CN113155506B (en) * | 2021-05-11 | 2024-03-22 | 成都天仁民防科技有限公司 | Lifting non-stationarity detection method for anti-flooding wind pavilion |
| CN113252358A (en) * | 2021-05-12 | 2021-08-13 | 东风电子科技股份有限公司 | Vehicle window state detection method, system, device, processor and storage medium thereof based on current gradient direction change dynamics |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108387380B (en) | 2020-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108387380B (en) | Method and system for detecting lifting smoothness of automobile electric window | |
| US10439527B2 (en) | Motor control device | |
| CN102312634B (en) | Anti-pinching control method and control system for automotive electric window | |
| US8513909B2 (en) | Processing a motor variable of a DC motor and actuating device for a motor vehicle | |
| CN104553911B (en) | Automobile can remember the detection method of ripple of DC Moto of automatic seat | |
| US20120091938A1 (en) | Correction of counting errors in the evaluation of current ripples in a dc motor | |
| CN111098808B (en) | Method and system for controlling vehicle body closed part based on direct current motor ripple | |
| CN109696650A (en) | The current sensor accuracy correcting method and medium of electric vehicle motor controller | |
| US9350230B2 (en) | Power conversion device and power conversion method with adjustable band-pass filter | |
| EP2280475A3 (en) | Method for starting single phase induction motor and electronic relay using the same | |
| US9270216B2 (en) | Method and device for processing a motor signal | |
| Xu et al. | Electric window regulator based on intelligent control | |
| US5524168A (en) | Method and apparatus for DC motor speed monitoring | |
| CN211955635U (en) | Direct current bus voltage detection circuit, dc-to-ac converter and electric automobile | |
| CN108894640B (en) | Anti-interference algorithm for position detection | |
| CN112227863A (en) | Low-cost car window anti-pinch control system and method | |
| CN116027066A (en) | Hall sensor intelligent detection system | |
| CN112810490B (en) | Device and method for rapidly detecting output current of direct current charger | |
| CN111183580A (en) | Method and device for detecting a rotational variable | |
| KR101383753B1 (en) | Motor drive control apparatus and control method thereofo | |
| JP2018038154A (en) | Electric automobile | |
| JPH1172522A (en) | Method and apparatus for detection deterioration of capacitor | |
| CN110778242A (en) | Method and system for controlling vehicle window operation and vehicle | |
| CN112383251A (en) | Motor starting control method and device, motor, storage medium and processor | |
| CN201705107U (en) | Clamping-preventive control system of automobile electric window |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |