CN115541229A - Position calibration system of long-stroke automobile clutch - Google Patents
Position calibration system of long-stroke automobile clutch Download PDFInfo
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- CN115541229A CN115541229A CN202211200611.1A CN202211200611A CN115541229A CN 115541229 A CN115541229 A CN 115541229A CN 202211200611 A CN202211200611 A CN 202211200611A CN 115541229 A CN115541229 A CN 115541229A
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
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- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
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- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
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- 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
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/022—Power-transmitting couplings or clutches
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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Abstract
The technical scheme adopted by the invention is as follows: a position calibration system of a long-stroke automobile clutch comprises two Hall chips, a permanent magnet and a micro-processing unit; the permanent magnet is fixed on the automobile clutch; when the clutch is positioned at the zero point position, the Hall chips are symmetrically fixed in the whole vehicle outside the permanent magnet; the signal output end of the Hall chip is electrically connected with the signal input end of the micro-processing unit; the permanent magnet generates linear displacement along with the clutch and triggers the two Hall chips to output linear signals; the micro-processing unit receives linear signals output by the two Hall chips and fits the two linear signals to obtain a comprehensive linear signal; and obtaining displacement data of the automobile clutch through the comprehensive linear signals. The invention saves cost and effectively improves the clutch position calibration precision.
Description
Technical Field
The invention belongs to the technical field of automobile clutches, and particularly relates to a position calibration system of a long-stroke automobile clutch.
Background
The clutch position sensor is arranged above the vehicle-mounted clutch bracket, and the clutch position sensor is a clutch switch. The sensor transmits the position signal of the clutch to the ECU controller, and the ECU controller is used for controlling the regulation of the ignition angle and the fuel injection quantity during constant speed cruising (GRA) and gear shifting.
At present, the position calibration of the automobile clutch is usually realized by a PLCD sensor due to long stroke. PLCD is an abbreviation of Permanent-magnet linear contact displacement, permanent magnet linear non-contact displacement sensor. The working principle is that the permanent magnet is fixed on the clutch of the automobile in an adhesive way, and the sensor consists of a magnetic conducting iron core, and a primary coil and two secondary coils which are respectively wound on the magnetic conducting iron core. When the primary coil generates an excitation alternating voltage with a certain frequency, corresponding inductive electromotive force is generated on the two secondary coils. When the permanent magnet moves linearly, the difference between the output voltages of the two secondary coils has a linear relation with the movement of the permanent magnet.
The existing sensor has a complex structure and high manufacturing cost; a special chip is required to be matched to generate excitation alternating voltage; the magnetic field can produce hysteresis effect in the iron core, affecting accuracy and response time.
Disclosure of Invention
The invention aims to solve the defects of the background technology, provides a position calibration system of a long-stroke automobile clutch, and effectively improves the position calibration precision of the clutch while saving the cost.
The technical scheme adopted by the invention is as follows: a position calibration system of a long-stroke automobile clutch comprises two Hall chips, a permanent magnet and a micro-processing unit; the permanent magnet is fixed on the automobile clutch; when the clutch is at the zero position, the Hall chips are symmetrically fixed in the whole vehicle outside the permanent magnet; the Hall chips are distributed along the movement direction of the permanent magnet; the signal output end of the Hall chip is electrically connected with the signal input end of the micro-processing unit; the permanent magnet generates linear displacement along with the clutch and triggers the two Hall chips to output linear signals; the micro-processing unit receives linear signals output by the two Hall chips and fits the two linear signals to obtain a comprehensive linear signal; and obtaining displacement data of the automobile clutch by synthesizing the linear signals.
In the technical scheme, the two Hall chips and the micro-processing unit are fixed on the same PCB; the signals output by the two Hall chips are PWM duty ratio signals. According to the invention, the Hall chip and the micro-processing unit are integrated on the PCB, so that the space in the vehicle is effectively saved. In the technical scheme, the Hall chip positioned on the left side of the permanent magnet is a first chip, a signal output by the first chip is a first signal, and the first output signal depends on the relative position of the permanent magnet and the first chip; the Hall chip positioned on the right side of the permanent magnet is a second chip, the signal output by the second chip is a second signal, and the second output signal depends on the relative position of the permanent magnet and the second chip; the relative positions of the permanent magnet and the first chip and the second chip are different except for any moment when the clutch is located at the zero point position; the first signal and the second signal output by the first chip and the second chip at any moment are different. According to the invention, the position data of the permanent magnet can be more accurately obtained by the left and right opposite arrangement of the two Hall chips.
The process that the micro-processing unit receives the linear signals output by the two Hall chips and fits the two linear signals to obtain a comprehensive linear signal comprises the following steps:
the micro-processing unit judges whether the first signal and the second signal are effectively output in a linear mode;
if the first signal and the second signal are both effectively output linearly, fitting linear processing is carried out on the first signal and the second signal to obtain a comprehensive linear signal;
if only the first signal is effectively linearly output, only the first signal is linearly processed to obtain a comprehensive linear signal;
and if only the second signal is effectively linearly output, only the second signal is linearly processed to obtain a comprehensive linear signal.
The invention only processes and calculates the signals which are effectively output in a linear mode, and the effectiveness and the accuracy of the comprehensive linear signals obtained through calculation are guaranteed.
In the above technical solution, the process of the micro processing unit determining whether the first signal and the second signal are effectively output linearly includes:
if the first signal is less than or equal to a first set value, only the first signal is judged to be effectively output in a linear mode;
if the first signal is larger than or equal to a second set value, only the second signal is judged to be effectively output in a linear mode;
and if the first signal is greater than the first set value and less than the second set value, judging that the first signal and the second signal are both effectively output in a linear mode.
The first set value and the second set value are defined for the first signal and are used for judging whether the signal is effectively output in a linear mode or not, the efficiency of the judging process is improved, and the calculation cost is saved.
In the above technical solution, the following formula is adopted to separately process the first signal S 1 Performing fitting linear processing to obtain a comprehensive linear signal S:
S＝C*S 1 +D 1 (1)；
wherein C is a set calculation coefficient, D 1 Is the set first compensation value.
In the above technical scheme, the following formula is adopted to separately pair the signal S 2 Performing fitting linear processing to obtain a comprehensive linear signal S:
S＝C*S 2 +D 2 (2)；
where C is a set calculation coefficient, D 2 Is the set second compensation value.
In the above technical solution, fitting linear processing is performed on the first signal and the second signal by using the following formula to obtain a comprehensive linear signal S:
S＝(C*S 1 +D 1 )*1/2+(C*S 2 +D 2 )*1/2 (3)。
the invention adopts the set formula to carry out fitting linear processing on the signals to obtain the comprehensive signals, thereby improving the calculation efficiency, ensuring the calculation precision and effectively reflecting the stroke state of the clutch.
In the above technical solution, the first compensation value D 1 A second compensation value D 2 And the calculation coefficient C is obtained by laboratory test calculation; in laboratory moldsThe whole process from complete closing to complete opening of the quasi-clutch is that the first chip and the second chip output a first signal and a second signal to the micro-processing unit in real time in the whole process, and position data of the quasi-clutch at each moment in the whole process are collected; the stroke of the whole process clutch is L;
acquiring a high saturation threshold S of the first signal in the whole process max And a low saturation threshold S of the second signal during the whole process min ；
Finding a high saturation threshold S of the first signal max Taking the position of the clutch corresponding to the starting point moment as a first signal saturation position point;
finding a low saturation threshold S for the second signal min The clutch position corresponding to the end point time serves as a second signal saturation position point;
solving the absolute value of the difference value between the second signal saturation position point and the first signal saturation position point as a saturation position difference delta;
calculating a first compensation value D using the following equation 1 ：
D 1 ＝S min *(L-Δ)/(2*L) (4)；
Calculating a first compensation value D using the following equation 2 ：
D 2 ＝S max *(L-Δ)/(2*L) (5)；
The coefficient C is calculated using the formula:
C＝(L+Δ)/(2*L) (6)。
according to the invention, all coefficients in the formula for calculating the comprehensive linear signal are obtained through laboratory test data, and the calculation method of the coefficients effectively reflects the stroke characteristics and the state of the clutch, so that the calculation accuracy of the comprehensive linear signal is effectively ensured.
In the technical scheme, the first set output value A and the second set output value B are obtained by laboratory test calculation; by setting the output values a and B, it is facilitated to determine the first signal S 1 And a second signal S 2 The linear interval of (3) is convenient for further linear fitting comprehensive output.
The first set point P is obtained by the following formula 1 ：
P 1 ＝Δ/4 (7)；
The second set point P is obtained by the following equation 2 ：
P 2 ＝-Δ/4 (8)；
The first set value A is a first set position point P of the first signal in the whole process 1 A corresponding output value; the second set value B is the second set position point P of the first signal in the whole process 2 The corresponding output value.
According to the invention, the first set value and the second set value are obtained through laboratory test data, so that the stroke characteristics and the state of the clutch are effectively reflected, and the accuracy of comprehensive linear signal calculation is effectively ensured.
In the technical scheme, the whole process of completely closing and completely opening the clutch is simulated in a laboratory, and the displacement data of the clutch at each moment in the whole process is collected simultaneously; calculating to obtain a comprehensive linear signal of each moment in the whole process based on a first signal and a second signal output by the first chip and the second chip in the whole process by adopting formulas (1) - (8); calculating to obtain a linear relation between the clutch position data and the comprehensive linear signal data according to the clutch displacement data and the comprehensive linear signal data at each moment in the whole process; and the micro-processing unit can calibrate the position stroke of the clutch according to the comprehensive linear signal acquired in real time and the linear relation between the comprehensive linear signal and the position data of the clutch. According to the invention, by adopting the double Hall chips, the measuring position stroke of the sensor is effectively improved, a special algorithm is developed and implanted into the microprocessor, the comprehensive linear fitting output of two paths of output signals is realized, the output precision of the sensor is improved, and the requirement of clutch position calibration can be met.
The invention has the beneficial effects that: the invention cancels the PLCD sensor in the prior art, has complex structure, needs a special chip to generate alternating-current excitation voltage, and inevitably generates magnetic hysteresis effect due to the need of an iron core, thereby influencing the precision and the response time of the sensor. The invention adopts the structure that the single magnet is matched with the double chips, has simple structure and convenient manufacture and installation. The invention synchronously develops a corresponding calculation method, obtains ideal linear output along with stroke change, and effectively improves the measurement precision.
Drawings
FIG. 1 is a schematic view of the installation of the present invention;
FIG. 2 is a schematic circuit diagram of the present invention;
FIG. 3 is a schematic flow diagram of the present invention;
FIG. 4 is a schematic diagram of the output signals of the dual chip of the present invention;
FIG. 5 is a diagram of the output signal of the dual chip and the fitted linear signal according to the present invention.
Detailed Description
The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.
As shown in FIG. 1, the position calibration system of the long-stroke automobile clutch comprises two Hall chips, a permanent magnet and a micro-processing unit; the permanent magnet is fixed on the automobile clutch; the Hall chips are symmetrically fixed in the whole vehicle at the outer side of the permanent magnet when in a zero position; the signal output end of the Hall chip is electrically connected with the signal input end of the micro-processing unit; the permanent magnet generates linear displacement along with the clutch and triggers the two Hall chips to output linear signals; the micro-processing unit receives linear signals output by the two Hall chips and fits the two linear signals to obtain a comprehensive linear signal; and calibrating the displacement data of the automobile clutch through the comprehensive linear signal. The permanent magnet is fixed on the automobile clutch in an adhesive way and moves linearly with a long stroke. The micro-processing unit measures the movement of the permanent magnet through the two Hall chips to calibrate the position stroke of the clutch.
As shown in fig. 2, the two hall chips and the micro-processing unit are fixed on the same PCB; the signals output by the two Hall chips are PWM duty ratio signals.
Specifically, the Hall chip positioned on the left side of the permanent magnet is a first chip, a signal output by the first chip is a first signal, and the first output signal depends on the relative position of the permanent magnet and the first chip; the Hall chip positioned on the right side of the permanent magnet is a second chip, a signal output by the second chip is a second signal, and the second output signal depends on the relative position of the permanent magnet and the second chip; the relative positions of the permanent magnet and the first chip and the second chip are different except for any moment when the clutch is located at the zero point position; the first signal and the second signal output by the first chip and the second chip at any moment are different. The permanent magnet moves with the clutch between the first core plate and the second core plate. When the clutch is at zero point, the two chips are symmetrical relative to the magnet, but are positioned differently, such as one +10mm and one-10 mm. Because the magnetic field is a vector and has a direction, when the chips are symmetrical (+ 10mm, -10 mm), the magnetic signals detected by the two chips are different. The micro-processing unit is integrated with an independently developed algorithm program, and a process of fitting two linear signals to obtain a comprehensive linear signal is performed, as shown in fig. 3, the process includes:
the micro-processing unit judges the first signal S 1 And a second signal S 2 Whether the linear output is effective or not;
if the first signal S 1 And a second signal S 2 If the signals are all invalid, outputting an invalid error-reporting prompt, which is very rare in general;
if the first signal S 1 And a second signal S 2 If the first signal and the second signal are both effectively output in a linear mode, fitting linear processing is carried out on the first signal and the second signal to obtain a comprehensive linear signal S;
if only the first signal S is present 1 Effectively in a linear output, only the first signal S 1 Carrying out linear processing to obtain a comprehensive linear signal S;
if only the second signal S is present 2 Effectively in a linear output, only for the second signal S 2 And carrying out linear processing to obtain a comprehensive linear signal S.
Specifically, the process of the micro-processing unit judging whether the first signal and the second signal are effectively output in a linear manner includes:
if the first signal S 1 If the first signal is less than or equal to the first set value A, only the first signal S is judged 1 Effectively presenting a linear output; using a compound of the formulaOne-to-one first signal S 1 Performing fitting linear processing to obtain a comprehensive linear signal S:
S＝C*S 1 +D 1 (1)；
wherein C is a set calculation coefficient, D 1 Is the set first compensation value.
If the first signal S 1 If the second signal is greater than or equal to the second set value B, only the second signal S is judged 2 Effectively presenting a linear output; using the following formula to pair the signals S separately 2 Performing fitting linear processing to obtain a comprehensive linear signal S:
S＝C*S 2 +D 2 (2)；
where C is a set calculation coefficient, D 2 Is the set second compensation value.
If the first signal S 1 If the first signal is greater than the first set value A and less than the second set value B, the first signal S is determined 1 And a second signal S 2 Are all effectively in linear output; fitting linear processing is carried out on the first signal and the second signal by adopting the following formula to obtain a comprehensive linear signal S:
S＝(C*S 1 +D 1 )*1/2+(C*S 2 +D 2 )*1/2 (3)。
specifically, the first compensation value D1, the second compensation value D2, the calculation coefficient C, the first set value a, and the second set value B are obtained by laboratory test calculation: simulating the whole process of completely closing the clutch to completely opening the clutch in a laboratory, wherein the first chip and the second chip output a first signal and a second signal to the microprocessing unit in real time in the whole process, and the time length of the whole process is L; the micro-processing unit calculates the first signal and the second signal acquired in the whole process to obtain a first compensation value D1, a second compensation value D2 and a calculation coefficient C, and the process is as follows:
as shown in FIG. 4, a high saturation threshold S of the first signal in the whole process is obtained max And a low saturation threshold S of the second signal during the whole process min (ii) a High saturation threshold S of the first signal in the overall process max The value corresponding to the inflection point of the first signal from the continuous linear ramp to the first flat period; the second signal is at the gateIn-process low saturation threshold S min The value of the second signal corresponding to the inflection point of the continuous linear ramp phase from the flat phase.
Finding a high saturation threshold S for the first signal max The position of a clutch (permanent magnet) corresponding to the starting point moment is used as a first signal saturation position point and is stored as delta/2;
finding a low saturation threshold S for the second signal min The position of the clutch (permanent magnet) corresponding to the end point moment is stored as a second signal saturation position point as-delta/2;
calculating the absolute value of the difference value between the second signal saturation position point and the first signal saturation position point to be used as a saturation position difference delta;
calculating a first compensation value D using the following equation 1 ：
D 1 ＝S min *(L-Δ)/(2*L) (4)；
Calculating a first compensation value D using the following equation 2 ：
D 2 ＝S max *(L-Δ)/(2*L) (5)；
The coefficient C is calculated using the formula:
C＝(L+Δ)/(2*L) (6)。
the first set point P is obtained by the following formula 1 ：
P 1 ＝Δ/4 (7)；
The second set point P is obtained by the following equation 2 ：
P 2 ＝-Δ/4 (8)；
As shown in FIG. 5, the first setting A is the first setting position P of the first signal in the whole process 1 A corresponding output value; the second set value B is the second set position point P of the first signal in the whole process 2 The corresponding output value.
Preferably, the whole process of the clutch from complete closing to complete opening is simulated in a laboratory, and the displacement data of the clutch at each moment in the whole process is collected simultaneously; a first compensation value D is obtained by statistical analysis in the microprocessing unit and calculation by the formulas (4) to (8) 1 A second compensation value D 2 Calculating coefficient C, firstAnd setting the value A and the second setting value B to generate a built-in algorithm program of the micro-processing unit.
The algorithm program integrated in the microprocessing unit is as follows:
based on the first signal S output by the first chip and the second chip in the whole process 1 And a second signal S 2 And calculating by a built-in algorithm program of the micro-processing unit to obtain a comprehensive linear signal S at each moment in the whole process.
And calculating to obtain a linear relation between the clutch position data and the comprehensive linear signal data according to the clutch displacement data and the comprehensive linear signal data at each moment in the whole process, and configuring the linear relation as an algorithm program in the micro-processing unit.
In the practical application process of the embodiment, the micro processing unit obtains a first signal output by the first chip and a second signal output by the second chip in real time. The micro-processing unit judges whether the first signal and the second signal are effectively output in a linear mode:
if the first signal S 1 If the first signal is less than or equal to the first set value A, only the first signal S is judged 1 Effectively presenting a linear output; the first signal S is individually matched using 1 Performing fitting linear processing to obtain a comprehensive linear signal S:
S＝C*S 1 +D 1 (1)；
wherein C is a set calculation coefficient, D 1 Is the set first compensation value.
If the first signal S 1 If the second signal is greater than or equal to the second set value B, only the second signal S is judged 2 Effectively presenting a linear output; using the following formula to pair the signals S separately 2 Performing fitting linear processing to obtain a comprehensive linear signal S:
S＝C*S 2 +D 2 (2)；
where C is a set calculation coefficient and D2 is a set second compensation value.
If the first signal S 1 If the first signal is greater than the first set value A and less than the second set value B, the first signal S is determined 1 And a second signal S 2 Are all effectively in linear output; fitting linear processing is carried out on the first signal and the second signal by adopting the following formula to obtain a comprehensive linear signal S:
S＝(C*S 1 +D 1 )*1/2+(C*S 2 +D 2 )*1/2 (3)。
the microprocessor unit can calibrate the position stroke of the clutch according to the comprehensive linear signal acquired in real time and the linear relation between the comprehensive linear signal and the position data of the clutch.
Those not described in detail in this specification are well within the skill of the art.
Claims (10)
1. The utility model provides a position calibration system of long stroke automobile clutch which characterized in that: the device comprises two Hall chips, a permanent magnet and a micro-processing unit; the permanent magnet is fixed on the automobile clutch; when the clutch is positioned at the zero point position, the Hall chips are symmetrically fixed in the whole vehicle outside the permanent magnet; the Hall chips are distributed along the motion direction of the permanent magnet; the signal output end of the Hall chip is electrically connected with the signal input end of the micro-processing unit; the permanent magnet generates linear displacement along with the clutch and triggers the two Hall chips to output linear signals; the micro-processing unit receives linear signals output by the two Hall chips and fits the two linear signals to obtain a comprehensive linear signal; and obtaining displacement data of the automobile clutch through the comprehensive linear signals.
2. The position calibration system for the long-stroke automobile clutch as claimed in claim 1, characterized in that: the two Hall chips and the micro-processing unit are fixed on the same PCB; the signals output by the two Hall chips are PWM duty ratio signals.
3. The position calibration system of the long-stroke automobile clutch as claimed in claim 2, characterized in that the hall chip located on the left side of the permanent magnet is a first chip, the signal output by the first chip is a first signal, and the first output signal depends on the relative position of the permanent magnet and the first chip; the Hall chip positioned on the right side of the permanent magnet is a second chip, the signal output by the second chip is a second signal, and the second output signal depends on the relative position of the permanent magnet and the second chip; at any time except when the clutch is at the zero position, the relative positions of the permanent magnet and the first chip and the second chip are different; the first signal and the second signal output by the first chip and the second chip at any time are different; the process that the micro-processing unit receives the linear signals output by the two Hall chips and fits the two linear signals to obtain a comprehensive linear signal comprises the following steps:
the micro-processing unit judges whether the first signal and the second signal are effectively output in a linear mode;
if the first signal and the second signal are both effectively output in a linear mode, fitting linear processing is carried out on the first signal and the second signal to obtain a comprehensive linear signal;
if only the first signal is effectively linearly output, only the first signal is linearly processed to obtain a comprehensive linear signal;
and if only the second signal is effectively linearly output, only the second signal is linearly processed to obtain a comprehensive linear signal.
4. The system for calibrating the position of the long-stroke automobile clutch as claimed in claim 3, wherein: the process that the micro-processing unit judges whether the first signal and the second signal are effectively output in a linear mode comprises the following steps:
if the first signal is less than or equal to a first set value, only the first signal is judged to be effectively output in a linear mode;
if the first signal is larger than or equal to a second set value, only the second signal is judged to be effectively output in a linear mode;
and if the first signal is larger than the first set value and smaller than the second set value, judging that the first signal and the second signal are both effectively output in a linear mode.
5. The system for calibrating the position of the long-stroke automobile clutch as claimed in claim 4, wherein: for the first signal S alone using the formula 1 Performing fitting linear processing to obtain a comprehensive linear signal S:
S＝C*S 1 +D 1 (1)；
wherein C is a set calculation coefficient, D 1 Is the set first compensation value.
6. The system for calibrating the position of the long-stroke automobile clutch as claimed in claim 5, wherein: using the following formula for the signal S alone 2 Performing fitting linear processing to obtain a comprehensive linear signal S:
S＝C*S 2 +D 2 (2)；
wherein C is a set calculation coefficient, D 2 Is the set second compensation value.
7. The position calibration system for the long-stroke automobile clutch as claimed in claim 6, characterized in that: fitting linear processing is carried out on the first signal and the second signal by adopting the following formula to obtain a comprehensive linear signal S:
S＝(C*S 1 +D 1 )*1/2+(C*S 2 +D 2 )*1/2 (3)。
8. the system for calibrating the position of the long-stroke automobile clutch as claimed in claim 7, wherein: first compensation value D 1 A second compensation value D 2 And the calculation coefficient C is obtained by laboratory test calculation; simulating the whole process of completely closing to completely opening the clutch in a laboratory, wherein the first chip and the second chip output a first signal and a second signal to the micro-processing unit in real time in the whole process, and meanwhile, collecting position data of the clutch at each moment in the whole process; the stroke of the whole process clutch is L;
obtaining a high saturation threshold S of the first signal in the whole process max And a low saturation threshold S of the second signal during the whole process min ；
Finding a high saturation threshold S of the first signal max Taking the position of the clutch corresponding to the starting point moment as a first signal saturation position point;
finding a low saturation threshold S for the second signal min The clutch position corresponding to the end point time serves as a second signal saturation position point;
solving the absolute value of the difference value between the second signal saturation position point and the first signal saturation position point as a saturation position difference delta;
calculating a first compensation value D using the following equation 1 ：
D 1 ＝S min *(L-Δ)/(2*L) (4)；
Calculating a first compensation value D using the following equation 2 ：
D 2 ＝S max *(L-Δ)/(2*L) (5)；
The coefficient C is calculated using the following formula:
C＝(L+Δ)/(2*L) (6)。
9. the system for calibrating the position of the long-stroke automobile clutch according to claim 8, characterized in that: the first set value A and the second set value B are obtained through laboratory test calculation;
the first set point P is obtained by the following formula 1 ：
P 1 ＝Δ/4 (7)；
The second set point P is obtained by the following equation 2 ：
P 2 ＝-Δ/4 (8)；
The first set value A is a first set position point P of the first signal in the whole process 1 A corresponding output value; the second set value B is a second set position point P of the first signal in the whole process 2 The corresponding output value.
10. The system for calibrating the position of the long-stroke automobile clutch according to claim 8, characterized in that: simulating the whole process of completely closing the clutch to completely opening the clutch in a laboratory, and simultaneously collecting displacement data of the clutch at each moment in the whole process; calculating to obtain a comprehensive linear signal at each moment in the whole process based on a first signal and a second signal output by the first chip and the second chip in the whole process by adopting formulas (1) - (8); calculating to obtain a linear relation between clutch position data and comprehensive linear signal data according to the clutch displacement data and the comprehensive linear signal data at each moment in the whole process; and the micro-processing unit can calibrate the position stroke of the clutch according to the comprehensive linear signal acquired in real time and the linear relation between the comprehensive linear signal and the position data of the clutch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211200611.1A CN115541229A (en) | 2022-09-29 | 2022-09-29 | Position calibration system of long-stroke automobile clutch |
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| CN202211200611.1A CN115541229A (en) | 2022-09-29 | 2022-09-29 | Position calibration system of long-stroke automobile clutch |
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| CN202211200611.1A Pending CN115541229A (en) | 2022-09-29 | 2022-09-29 | Position calibration system of long-stroke automobile clutch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110952A (en) * | 2023-08-18 | 2023-11-24 | 南京中旭电子科技有限公司 | Signal processing method and signal processing device for Hall sensor |
| CN117190836A (en) * | 2023-10-31 | 2023-12-08 | 万向钱潮股份公司 | Calibration method of travel sensor |
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2022
- 2022-09-29 CN CN202211200611.1A patent/CN115541229A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110952A (en) * | 2023-08-18 | 2023-11-24 | 南京中旭电子科技有限公司 | Signal processing method and signal processing device for Hall sensor |
| CN117110952B (en) * | 2023-08-18 | 2024-02-02 | 南京中旭电子科技有限公司 | Signal processing method and signal processing device for Hall sensor |
| CN117190836A (en) * | 2023-10-31 | 2023-12-08 | 万向钱潮股份公司 | Calibration method of travel sensor |
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