CN111896249A - Method and system for predicting service life of clutch with displacement sensor booster - Google Patents
Method and system for predicting service life of clutch with displacement sensor booster Download PDFInfo
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- CN111896249A CN111896249A CN202010784501.9A CN202010784501A CN111896249A CN 111896249 A CN111896249 A CN 111896249A CN 202010784501 A CN202010784501 A CN 202010784501A CN 111896249 A CN111896249 A CN 111896249A
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- 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
- 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
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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Abstract
The invention provides a method and a system for predicting the service life of a clutch with a displacement sensor booster, wherein the method comprises the following steps: s1, a displacement sensor is arranged to detect the position of a piston of a clutch booster through an induction pull rod; s2, recording the initial position of the piston of the clutch booster acquired by the displacement sensor; and S3, setting a displacement sensor to set mileage at intervals, acquiring the current position of the piston of the clutch booster, calculating the residual abrasion loss, the driving mileage of unit abrasion loss and the residual cruising mileage when judging that the clutch is abraded, and outputting the residual abrasion loss, the driving mileage of unit abrasion loss and the residual cruising mileage when reaching the automobile mileage threshold value. The invention realizes the prediction of the service life of the clutch, avoids the fault of vehicle half-way breakdown caused by insufficient experience or misjudgment of a driver, and simultaneously can provide visual clutch use information for the driver so as to make a clutch replacement plan for the driver.
Description
Technical Field
The invention belongs to the technical field of commercial vehicle clutch intellectualization, and particularly relates to a method and a system for predicting the service life of a clutch with a displacement sensor booster.
Background
At present, the service life of the clutch of the commercial vehicle is pre-judged mainly based on the driving experience of a driver and the replacement experience of the clutch. The clutch needs to be replaced in time when the clutch is worn to the limit stage by a driver, and if the experience is insufficient or the subjective judgment is wrong, the fault that the vehicle is anchored in the half road can be caused. Secondly, if the driver cannot directly know the usage of the clutch, the driver cannot make a clutch replacement plan in advance. Thirdly, the driving habit of the driver in the starting stage plays a key role in the service life of the clutch, for example, in the starting stage, the operations of high rotating speed, high-grade starting, large throttle opening and the like of the engine can aggravate the sliding abrasion of the clutch, the abrasion of the acceleration clutch can be reflected, and the difficulty in improving the driving technology of the driver is always high.
Therefore, it is desirable to provide a method and a system for predicting the life of a clutch with a displacement sensor booster.
Disclosure of Invention
Aiming at the defect that the service life of the clutch can only be predicted through the experience of a driver at present in the prior art, the invention provides a method and a system for predicting the service life of the clutch with a displacement sensor booster, so as to solve the technical problem.
In a first aspect, the present invention provides a method for predicting the life of a clutch with a displacement sensor booster, comprising the following steps:
s1, a displacement sensor is arranged to detect the position of a piston of a clutch booster through an induction pull rod;
s2, recording the initial position of the piston of the clutch booster acquired by the displacement sensor;
and S3, setting a displacement sensor to set mileage at intervals, acquiring the current position of the piston of the clutch booster, calculating the residual abrasion loss, the driving mileage of unit abrasion loss and the residual cruising mileage when judging that the clutch is abraded, and outputting the residual abrasion loss, the driving mileage of unit abrasion loss and the residual cruising mileage when reaching the automobile mileage threshold value.
Further, the step S1 specifically includes the following steps:
s11, arranging an induction pull rod, and connecting one end of the induction pull rod with a piston of a clutch booster;
s12, arranging an induction pull rod, wherein the other end of the induction pull rod penetrates through the displacement sensor and slides along an inner cavity of the displacement sensor;
and S13, arranging a displacement sensor to obtain different positions of the induction pull rod and the piston of the clutch booster according to different inductance values generated by the displacement sensor and the induction pull rod. The piston of the clutch booster is connected with the induction pull rod, the induction pull rod moves in the displacement sensor, different inductance values are generated at different positions, and the positions of the induction pull rod and the piston are obtained by analyzing the inductance values; the clutch separation process: the piston of the clutch booster moves forwards to drive the induction pull rod to move forwards; the clutch abrasion process: the piston of the clutch booster moves backwards and drives the induction pull rod to move backwards at the same time, and when the movement amount is larger than the limit abrasion amount delta0And then sending out an alarm signal.
Further, the step S2 specifically includes the following steps:
s21, carrying out a power-on test after the whole vehicle is off-line;
s22, setting a displacement sensor in an initial time period T, and acquiring the position of the piston of the clutch booster for 1 time at intervals of a time period delta T to obtain n position values, wherein n is T/delta T;
and S23, taking the minimum value of the n position values as the position A of the piston of the clutch booster.
Further, the step S3 specifically includes the following steps:
s31, setting a displacement sensor to set a mileage M at intervals, and acquiring the current position B of the piston of the clutch boosternAnd at the current position B of the clutch booster pistonnWith the last acquired clutch booster piston position Bn-1Compare Bn≤Bn-1While, clutch wear is determined and the current position B of the clutch booster piston is recordedn；
S32, calculating the residual abrasion loss to be A-BnThe residual wear rate was calculated to be 1- (A-B)n) Δ O, where Δ O is a clutch wear threshold;
s33, calculating the driving mileage C of the unit abrasion lossn＝M/(Bn-1-Bn)；
S34, calculating the residual cruising range to be [ delta O- (A-B)n)]×Cn；
S35, judging whether the integral multiple of the automobile mileage threshold value is reached;
if yes, go to step S36;
if not, returning to the step S31;
and S36, outputting the residual abrasion loss, the driving mileage of the unit abrasion loss and the residual cruising mileage.
Further, in step S31, when the clutch is in the disengaged state and the clutch piston is frictionally thermally expanded, Bn＞Bn-1At this time, BnThe value is not saved.
Further, in step S32, when A-BnWhen the pressure is larger than delta O, a clutch wear overrun alarm is sent out;
in step S33, the mileage C of the previous p unit wear amounts is calculated1，C2……Cp；
Setting C ═ C1+C2……Cp)/p。
In a second aspect, the present invention provides a clutch life prediction system with a displacement sensor booster, comprising:
the clutch booster piston position detection module is used for setting a displacement sensor to detect the position of the clutch booster piston through the induction pull rod;
the initial position recording module is used for recording the initial position of the piston of the clutch booster acquired by the displacement sensor;
and the wear loss and endurance mileage calculation module is used for setting interval set mileage of the displacement sensor, acquiring the current position of the piston of the clutch booster, calculating the residual wear loss, the driving mileage of unit wear loss and the residual endurance mileage when judging that the clutch is worn, and outputting the residual wear loss, the driving mileage of unit wear loss and the residual endurance mileage when reaching the automobile mileage threshold value.
Further, the clutch booster piston position detection module includes:
the inductive pull rod piston connecting unit is used for connecting one end of an inductive pull rod with the piston of the clutch booster;
the displacement sensor connecting unit is used for arranging the other end of the induction pull rod to penetrate through the displacement sensor and slide along the inner cavity of the displacement sensor;
and the displacement sensor detection unit is used for setting different positions of the displacement sensor for acquiring the induction pull rod and the piston of the clutch booster according to different inductance values generated by the displacement sensor and the induction pull rod.
Further, the initial position recording module includes:
the power-on test starting unit is used for carrying out power-on test after the whole vehicle is off-line;
the device comprises an initial position acquisition unit, a displacement sensor and a control unit, wherein the initial position acquisition unit is used for setting the position of the clutch booster piston for 1 time at an interval time period delta T within an initial time period T to obtain n position values, and n is T/delta T;
and the initial position setting unit is used for taking the minimum value of the n position values as the position A of the clutch booster piston.
Further, the module for calculating the wear loss and the endurance mileage comprises:
a recording unit for recording the current position of the clutch wear for setting the interval set mileage M of the displacement sensor and obtaining the current position B of the piston of the clutch boosternAnd at the current position B of the clutch booster pistonnWith the last acquired clutch booster piston position Bn-1Compare Bn≤Bn-1While, clutch wear is determined and the current position B of the clutch booster piston is recordedn；
Residual millA loss calculating unit for calculating the residual abrasion loss as A-BnThe residual wear rate was calculated to be 1- (A-B)n) Δ O, where Δ O is a clutch wear threshold;
a unit wear amount mileage calculation unit for calculating a unit wear amount mileage Cn＝M/(Bn-1-Bn)；
A cruising mileage calculation unit for calculating a remaining cruising mileage of [ Delta O- (A-B)n)]×Cn；
The mileage threshold judging unit is used for judging whether the mileage reaches integral multiple of the automobile mileage threshold;
and the abrasion loss and endurance output unit is used for outputting the residual abrasion loss, the driving mileage of the unit abrasion loss and the residual endurance mileage when the integral multiple of the automobile mileage threshold is reached.
The beneficial effect of the invention is that,
the method and the system for predicting the service life of the clutch with the displacement sensor booster realize the prediction of the service life of the clutch, avoid the fault of vehicle half-way breakdown caused by insufficient experience or missubjective judgment of a driver, and simultaneously provide visual clutch use information for the driver so as to make a clutch replacement plan for the driver; the invention realizes the quantification of the wear condition of the clutch, and realizes the comparison of the driving technologies of the driver by comparing the wear of the clutch under the same vehicle condition and road condition, thereby supervising and urging the driver to improve the driving technologies and prolonging the service life of the clutch.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a first schematic flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of the clutch with displacement sensor booster of the present invention;
FIG. 3 is a second flow chart of the method of the present invention;
FIG. 4 is a schematic diagram of the system of the present invention;
in the figure, 1-clutch booster piston position detection module; 1.1-an induction pull rod piston connecting unit; 1.2-induction pull rod displacement sensor connecting unit; 1.3-displacement sensor detecting unit; 2-an initial position recording module; 2.1-power-on test starting unit; 2.2-initial position acquisition unit; 2.3-initial position setting unit; 3-a module for calculating the abrasion loss and the endurance mileage; 3.1-clutch wear current position recording unit; 3.2-residual wear amount calculation unit; 3.3-unit abrasion loss driving mileage calculating unit; 3.4-cruising mileage calculation unit; 3.5-mileage threshold value judging unit; 3.6-abrasion loss and endurance output unit; 4-a clutch booster piston; 5-induction pull rod; 6-displacement sensor.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1 and 2, the present invention provides a method for predicting the life of a clutch with a displacement sensor booster, comprising the steps of:
s1, a displacement sensor is arranged to detect the position of a piston of a clutch booster through an induction pull rod;
s2, recording the initial position of the piston of the clutch booster acquired by the displacement sensor;
and S3, setting a displacement sensor to set mileage at intervals, acquiring the current position of the piston of the clutch booster, calculating the residual abrasion loss, the driving mileage of unit abrasion loss and the residual cruising mileage when judging that the clutch is abraded, and outputting the residual abrasion loss, the driving mileage of unit abrasion loss and the residual cruising mileage when reaching the automobile mileage threshold value.
Example 2:
as shown in fig. 2 and 3, the present invention provides a method for predicting the life of a clutch with a displacement sensor booster, comprising the steps of:
s1, a displacement sensor is arranged to detect the position of a piston of a clutch booster through an induction pull rod; the method comprises the following specific steps:
s11, arranging an induction pull rod, and connecting one end of the induction pull rod with a piston of a clutch booster;
s12, arranging an induction pull rod, wherein the other end of the induction pull rod penetrates through the displacement sensor and slides along an inner cavity of the displacement sensor;
s13, arranging a displacement sensor to obtain different positions of the induction pull rod and the piston of the clutch booster according to different inductance values generated by the displacement sensor and the induction pull rod;
s2, recording the initial position of the piston of the clutch booster acquired by the displacement sensor; the method comprises the following specific steps:
s21, carrying out a power-on test after the whole vehicle is off-line;
s22, setting a displacement sensor in an initial time period T, and acquiring the position of the piston of the clutch booster for 1 time at intervals of a time period delta T to obtain n position values, wherein n is T/delta T;
s23, taking the minimum value of the n position values as the position A of the piston of the clutch booster;
s3, setting displacement sensors to set mileage at intervals, acquiring the current position of a piston of the clutch booster, calculating the residual abrasion loss, the driving mileage of unit abrasion loss and the residual cruising mileage when judging that the clutch is abraded, and outputting the residual abrasion loss, the driving mileage of unit abrasion loss and the residual cruising mileage when reaching an automobile mileage threshold value; the method comprises the following specific steps:
s31, setting a displacement sensor to set a mileage M at intervals, and acquiring the current position B of the piston of the clutch boosternAnd at the current position B of the clutch booster pistonnWith the last acquired clutch booster piston position Bn-1Compare Bn≤Bn-1While, clutch wear is determined and the current position B of the clutch booster piston is recordedn；
S32, calculating the residual abrasion loss to be A-BnThe residual wear rate was calculated to be 1- (A-B)n) Δ O, where Δ O is a clutch wear threshold;
s33, calculating the driving mileage C of the unit abrasion lossn＝M/(Bn-1-Bn)；
S34, calculating the residual cruising range to be [ delta O- (A-B)n)]×Cn；
S35, judging whether the integral multiple of the automobile mileage threshold value is reached;
if yes, go to step S36;
if not, returning to the step S31;
and S36, outputting the residual abrasion loss, the driving mileage of the unit abrasion loss and the residual cruising mileage.
In the above embodiment, the clutch booster piston 4 is connected to the induction rod 5, the induction rod 5 moves in the displacement sensor 6, different inductance values are generated at different positions, and the positions of the induction rod 5 and the piston 4 are obtained by analyzing the inductance values.
The clutch separation process: the piston 4 of the clutch booster moves forwards to drive the induction pull rod 5 to move forwards.
The clutch abrasion process: the piston 4 of the clutch booster moves backwards, and simultaneously drives the induction pull rod 5 to move backwards, and when the movement amount is larger than the limit abrasion amount delta 0, an alarm signal is sent;
electrifying the whole vehicle after the whole vehicle is off line;
reading the sensor position every 1 second within 10 seconds;
judging whether a clutch signal exists in the reading period of 10 seconds or not so as to confirm that the clutch pedal is not stepped within 10 seconds;
saving the minimum value of 10 times as an initial value A;
reading the running mileage of the whole vehicle, and executing the reading of the position B of the sensor when judging that the running mileage reaches the integral multiple of 100Kmn；
Judging whether B is presentn≤Bn-1That is, whether the reading is valid is determined by comparing the position of the displacement sensor with the position of the displacement sensor read last time. Number of positions of displacement sensor B in normal wear conditionnAre tapered, but there are two exceptions: firstly, the friction material is thermally expanded due to friction heat; second, reading BnWhen the clutch is in a disengaged state; the two situations are regarded as invalid data and are not stored;
calculating the percentage of the residual abrasion loss to the total abrasion loss by the formula of 1- (A-B)n)/ΔO；
Calculating the mileage per wear of 1mm 100/(B)n-1-Bn) Stored as Cn;
first three readings CnCalculating and storing an average value C;
calculating the cruising mileage [ delta O- (A-B)n)]×Cn；
Judging whether the driving mileage reaches an integral multiple of 1 ten thousand kilometers or not;
and outputting the residual abrasion loss, the travel mileage of 1mm per abrasion and the cruising mileage information.
In certain embodiments, step S31 is performed when the clutch is in the disengaged state and the clutch piston is frictionally thermally expanded, Bn＞Bn-1At this time, BnThe value is not saved;
in step S32, when A-BnWhen the pressure is larger than delta O, a clutch wear overrun alarm is sent out;
in step S33, the mileage C of the previous p unit wear amounts is calculated1，C2……Cp；
Setting C ═ C1+C2……Cp)/p。
Example 3:
as shown in fig. 4, the present invention provides a clutch life prediction system with a displacement sensor booster, comprising:
the clutch booster piston position detection module 1 is used for arranging a displacement sensor to detect the position of the clutch booster piston through an induction pull rod; the clutch booster piston position detection module 1 includes:
the inductive pull rod piston connecting unit 1.1 is used for connecting one end of an inductive pull rod with a piston of a clutch booster;
the induction pull rod displacement sensor connecting unit 1.2 is used for arranging that the other end of the induction pull rod penetrates through the displacement sensor and slides along the inner cavity of the displacement sensor;
the displacement sensor detection unit 1.3 is used for setting the displacement sensor to obtain different positions of the induction pull rod and the piston of the clutch booster according to different inductance values generated by the displacement sensor and the induction pull rod;
the initial position recording module 2 is used for recording the initial position of the piston of the clutch booster acquired by the displacement sensor; the initial position recording module 2 includes:
the power-on test starting unit 2.1 is used for carrying out power-on test after the whole vehicle is off-line;
an initial position obtaining unit 2.2, configured to set the displacement sensor to obtain the position of the clutch booster piston 1 time at an interval time Δ T within an initial time period T, so as to obtain n position values, where n is T/Δ T;
an initial position setting unit 2.3 for taking the minimum value of the n position values as the position A of the piston of the clutch booster;
the wear loss and endurance mileage calculation module 3 is used for setting interval set mileage of the displacement sensor, acquiring the current position of the piston of the clutch booster, calculating the residual wear loss, the driving mileage of unit wear loss and the residual endurance mileage when judging that the clutch is worn, and outputting the residual wear loss, the driving mileage of unit wear loss and the residual endurance mileage when reaching the automobile mileage threshold value; the wear loss and endurance mileage calculation module 3 includes:
clutch wear is presentA position recording unit 3.1 for setting the interval set mileage M of the displacement sensor and obtaining the current position B of the piston of the clutch boosternAnd at the current position B of the clutch booster pistonnWith the last acquired clutch booster piston position Bn-1Compare Bn≤Bn-1While, clutch wear is determined and the current position B of the clutch booster piston is recordedn；
A residual wear amount calculation unit 3.2 for calculating a residual wear amount A-BnThe residual wear rate was calculated to be 1- (A-B)n) Δ O, where Δ O is a clutch wear threshold;
a unit wear amount mileage calculation unit 3.3 for calculating the mileage C per unit wear amountn＝M/(Bn-1-Bn)；
A cruising mileage calculation unit 3.4 for calculating a remaining cruising mileage of [ Delta O- (A-B)n)]×Cn；
The mileage threshold judging unit 3.5 is used for judging whether the mileage reaches integral multiple of the automobile mileage threshold;
and the abrasion loss and endurance output unit 3.6 is used for outputting the residual abrasion loss, the driving mileage of the unit abrasion loss and the residual endurance mileage when the integral multiple of the automobile mileage threshold is reached.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A method for predicting the service life of a clutch with a displacement sensor booster is characterized by comprising the following steps:
s1, a displacement sensor is arranged to detect the position of a piston of a clutch booster through an induction pull rod;
s2, recording the initial position of the piston of the clutch booster acquired by the displacement sensor;
and S3, setting a displacement sensor to set mileage at intervals, acquiring the current position of the piston of the clutch booster, calculating the residual abrasion loss, the driving mileage of unit abrasion loss and the residual cruising mileage when judging that the clutch is abraded, and outputting the residual abrasion loss, the driving mileage of unit abrasion loss and the residual cruising mileage when reaching the automobile mileage threshold value.
2. The method for predicting the life of a clutch with a displacement sensor booster as set forth in claim 1, wherein the step S1 is embodied as follows:
s11, arranging an induction pull rod, and connecting one end of the induction pull rod with a piston of a clutch booster;
s12, arranging an induction pull rod, wherein the other end of the induction pull rod penetrates through the displacement sensor and slides along an inner cavity of the displacement sensor;
and S13, arranging a displacement sensor to obtain different positions of the induction pull rod and the piston of the clutch booster according to different inductance values generated by the displacement sensor and the induction pull rod.
3. The method for predicting the life of a clutch with a displacement sensor booster as set forth in claim 1, wherein the step S2 is embodied as follows:
s21, carrying out a power-on test after the whole vehicle is off-line;
s22, setting a displacement sensor in an initial time period T, and acquiring the position of the piston of the clutch booster for 1 time at intervals of a time period delta T to obtain n position values, wherein n is T/delta T;
and S23, taking the minimum value of the n position values as the position A of the piston of the clutch booster.
4. The method for predicting the life of a clutch with a displacement sensor booster as set forth in claim 3, wherein the step S3 is embodied as follows:
s31, setting a displacement sensor to set a mileage M at intervals, and acquiring the current position B of the piston of the clutch boosternAnd at the current position B of the clutch booster pistonnWith the last acquired clutch booster piston position Bn-1Compare Bn≤Bn-1While, clutch wear is determined and the current position B of the clutch booster piston is recordedn；
S32, calculating the residual abrasion loss to be A-BnThe residual wear rate was calculated to be 1- (A-B)n) Δ O, where Δ O is a clutch wear threshold;
s33, calculating the driving mileage C of the unit abrasion lossn＝M/(Bn-1-Bn)；
S34, calculating the residual cruising range to be [ delta O- (A-B)n)]×Cn；
S35, judging whether the integral multiple of the automobile mileage threshold value is reached;
if yes, go to step S36;
if not, returning to the step S31;
and S36, outputting the residual abrasion loss, the driving mileage of the unit abrasion loss and the residual cruising mileage.
5. The method for predicting the life of a clutch with a booster of claim 4, wherein in step S31, when the clutch is in a disengaged state and the clutch piston is frictionally thermally expanded, B isn＞Bn-1At this time, BnThe value is not saved.
6. The method for predicting the life of a clutch with a displacement sensor booster as set forth in claim 4, wherein in step S32, when a-BnWhen the pressure is larger than delta O, a clutch wear overrun alarm is sent out;
in step S33, the mileage C of the previous p unit wear amounts is calculated1，C2……Cp；
Setting C ═ C1+C2……Cp)/p。
7. A clutch life prediction system with a displacement sensor booster, comprising:
the clutch booster piston position detection module (1) is used for arranging a displacement sensor to detect the position of the clutch booster piston through an induction pull rod;
the initial position recording module (2) is used for recording the initial position of the piston of the clutch booster acquired by the displacement sensor;
and the wear loss and endurance mileage calculation module (3) is used for setting interval set mileage of the displacement sensor, acquiring the current position of the piston of the clutch booster, calculating the residual wear loss, the driving mileage of unit wear loss and the residual endurance mileage when judging that the clutch is worn, and outputting the residual wear loss, the driving mileage of unit wear loss and the residual endurance mileage when reaching the automobile mileage threshold value.
8. The clutch life prediction system with a displacement sensor booster of claim 7, wherein the clutch booster piston position detection module (1) includes:
the inductive pull rod piston connecting unit (1.1) is used for connecting one end of an inductive pull rod with a clutch booster piston;
the induction pull rod displacement sensor connecting unit (1.2) is used for arranging the other end of the induction pull rod to penetrate through the displacement sensor and slide along the inner cavity of the displacement sensor;
and the displacement sensor detection unit (1.3) is used for setting different positions of the displacement sensor for acquiring the induction pull rod and the piston of the clutch booster according to different inductance values generated by the displacement sensor and the induction pull rod.
9. The clutch life prediction system with a displacement sensor booster as set forth in claim 7, wherein the initial position recording module (2) comprises:
the power-on test starting unit (2.1) is used for carrying out power-on test after the whole vehicle is off-line;
an initial position acquisition unit (2.2) for setting the position of the clutch booster piston for 1 time at an interval of time delta T within an initial time period T by the displacement sensor to obtain n position values, wherein n is T/delta T;
and an initial position setting unit (2.3) for taking the minimum value of the n position values as the position A of the clutch booster piston.
10. The clutch life prediction system with a displacement sensor booster as set forth in claim 9, wherein the wear amount and mileage calculation module (3) includes:
a current position recording unit (3.1) for clutch abrasion, which is used for setting a distance setting mileage M of the displacement sensor and acquiring the current position B of the piston of the clutch boosternAnd at the current position B of the clutch booster pistonnWith the last acquired clutch booster piston position Bn-1Compare Bn≤Bn-1While, clutch wear is determined and the current position B of the clutch booster piston is recordedn；
A residual wear amount calculation unit (3.2) for calculating a residual wear amount A-BnThe residual wear rate was calculated to be 1- (A-B)n) Δ O, where Δ O is a clutch wear threshold;
a unit wear amount mileage calculation unit (3.3) for calculating a unit wear amount mileage Cn＝M/(Bn-1-Bn)；
A cruising range calculation unit (3.4) for calculating a remaining cruising range [ Delta O- (A-B)n)]×Cn；
The mileage threshold judging unit (3.5) is used for judging whether the mileage reaches the integral multiple of the automobile mileage threshold;
and the abrasion loss and endurance output unit (3.6) is used for outputting the residual abrasion loss, the driving mileage of the unit abrasion loss and the residual endurance mileage when the integral multiple of the automobile mileage threshold is reached.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109045A (en) * | 2021-03-11 | 2021-07-13 | 东风商用车有限公司 | Endurance test method of booster assembly |
| CN113586635A (en) * | 2021-07-30 | 2021-11-02 | 的卢技术有限公司 | Brake pad wear monitoring active early warning system, method, vehicle and storage medium |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109045A (en) * | 2021-03-11 | 2021-07-13 | 东风商用车有限公司 | Endurance test method of booster assembly |
| CN113109045B (en) * | 2021-03-11 | 2024-01-05 | 东风商用车有限公司 | Durability test method for booster assembly |
| CN113586635A (en) * | 2021-07-30 | 2021-11-02 | 的卢技术有限公司 | Brake pad wear monitoring active early warning system, method, vehicle and storage medium |
| CN115217874A (en) * | 2022-07-14 | 2022-10-21 | 东风商用车有限公司 | System and method for estimating wear life of clutch |
| CN115217874B (en) * | 2022-07-14 | 2023-06-20 | 东风商用车有限公司 | Clutch wear life prediction system and method |
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