CN112857769A - Brake abnormity diagnosis method - Google Patents
Brake abnormity diagnosis method Download PDFInfo
- Publication number
- CN112857769A CN112857769A CN202110071884.XA CN202110071884A CN112857769A CN 112857769 A CN112857769 A CN 112857769A CN 202110071884 A CN202110071884 A CN 202110071884A CN 112857769 A CN112857769 A CN 112857769A
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- brake
- rotating wheel
- rotating
- rotating speed
- braking state
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000003745 diagnosis Methods 0.000 title claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims abstract description 45
- 230000002159 abnormal effect Effects 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 230000005856 abnormality Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000002405 diagnostic procedure Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
Abstract
The invention discloses a brake abnormity diagnosis method, which comprises the following steps: step A: monitoring the braking state of the rotating wheel in a normal-temperature drying state, starting a motor by a controller, driving the rotating wheel to rotate when the motor works, presetting a rotating speed threshold value in the controller, monitoring the rotating speed of the rotating wheel in real time by a rotating speed monitor, and when the rotating speed of the rotating wheel is more than 4000, generating a brake instruction by the controller to control a brake to be started to brake the rotating wheel; and B: the method comprises the steps of acquiring the rotating speed of a rotating wheel in a braking state in real time, presetting a 'safe rotating speed threshold' in a rotating speed analysis module, and judging the real-time rotating speed of the rotating wheel in the braking state through the rotating speed analysis module; the invention has the beneficial effects that: the abnormal brake can be monitored according to the real-time rotating speed of the rotating wheel in the braking state, the working environment of the brake is complex and diversified, and the operation monitoring of the brake is more comprehensive and reliable.
Description
Technical Field
The invention relates to the field of brakes, in particular to a brake abnormity diagnosis method.
Background
The general working principle of the braking system is that the mutual friction between a non-rotating element connected with a vehicle body (or a vehicle frame) and a rotating element connected with a wheel (or a transmission shaft) is utilized to prevent the wheel from rotating or the trend of rotating, the general brake applies braking torque to the rotating element through a fixed element in the brake, the rotating angular speed of the rotating element is reduced, meanwhile, the braking force of a road surface to the wheel is generated by the adhesion between the wheel and the ground so as to decelerate the vehicle, all brakes which generate braking torque by the friction between the fixed element and the working surface of the rotating element are friction brakes, the friction brakes used by the vehicle can be divided into a drum type and a disc type, the rotating element is fixedly arranged on the wheel or a half shaft, namely, the brakes with the braking torque directly acting on the wheels on two sides are called as wheel brakes, and the rotating element is fixedly arranged on the transmission, the brake whose braking torque is redistributed via the drive axle to the wheels on both sides is called the central brake.
The existing brake monitoring method can not judge the braking state of the brake according to the rotating speed, the monitoring environment of the brake is single, the brake of the brake is monitored only in the ordinary environment, and the brake monitoring in the special environment is lacked, so that the problem that the brake is easy to be abnormal when the brake is in the special environment in the practical use is caused.
Disclosure of Invention
The invention aims to solve the problems that the conventional brake monitoring method cannot judge the braking state of a brake according to the rotating speed, the monitoring environment of the brake is single, the brake of the brake is monitored only in a normal environment, and the brake monitoring in a special environment is lacked, so that the brake is easy to be abnormal when the brake is in a special environment in actual use.
The purpose of the invention can be realized by the following technical scheme: a brake abnormality diagnosis method comprising the steps of:
step A: monitoring the braking state of the rotating wheel in a normal-temperature drying state, starting a motor by a controller, driving the rotating wheel to rotate when the motor works, presetting a rotating speed threshold value in the controller, monitoring the rotating speed of the rotating wheel in real time by a rotating speed monitor, and when the rotating speed of the rotating wheel is more than 4000, generating a brake instruction by the controller to control a brake to be started to brake the rotating wheel;
and B: the method comprises the steps of acquiring the rotating speed of a rotating wheel in a braking state in real time, presetting a 'safe rotating speed threshold' in a rotating speed analysis module, and judging the real-time rotating speed of the rotating wheel in the braking state through the rotating speed analysis module;
when the real-time rotating speed of the rotating wheel in the braking state is greater than the safe rotating speed threshold value, the rotating wheel is judged to be abnormal;
when the real-time rotating speed of the rotating wheel in the braking state is less than or equal to the safe rotating speed threshold value, the brake is judged to be normal, at the moment, the work of the motor is closed, and the rotation of the rotating wheel is stopped;
and C: monitoring the brake state of the brake in a high-temperature state through an environment simulator, wherein the environment simulator comprises a water sprayer, a cooling rod and a heating rod, and the rotating wheel is heated to 50 ℃ through the heating rod;
step D: starting a motor by a controller, driving a rotating wheel to rotate when the motor works, and referring to the steps A to B in a specific monitoring and judging mode;
step E: the temperature of the rotating wheel is reduced to minus 15 ℃ through a cooling rod, the braking state of a brake in a low-temperature state is monitored, a motor is started through a controller, the rotating wheel is driven to rotate when the motor works, and the specific monitoring and judging mode refers to the steps A to B;
step F: spraying moisture on the surface of the rotating wheel through a water sprayer, monitoring the braking state of the brake in a humid normal-temperature environment, starting a motor through a controller, driving the rotating wheel to rotate when the motor works, and referring to the steps A to B in a specific monitoring and judging mode;
step G: spraying moisture on the surface of the rotating wheel through a water sprayer, heating the rotating wheel to 50 ℃, monitoring the braking state of the brake in a moist and high-temperature environment, and referring to the steps A to B in a specific monitoring and judging mode;
step H: and (4) spraying moisture on the surface of the rotating wheel through a water sprayer, reducing the temperature of the rotating wheel to minus 15 ℃, monitoring the braking state of the brake in a low-temperature and humid environment, and referring to the steps A to B in a specific monitoring and judging mode.
Further, the method comprises the following steps: the effective time of the rotating speed analysis module for judging the real-time rotating speed of the rotating wheel in the braking state is 10 seconds, the rotating speed analysis module judges the effective time according to the lowest value of the real-time rotating speed of the rotating wheel in the braking state within 10 seconds, when the lowest rotating speed value within 10 seconds is larger than a safe rotating speed threshold value, the rotating speed analysis module judges that a brake is abnormal, and when the maximum rotating speed value within 10 seconds is smaller than or equal to the safe rotating speed threshold value, the rotating speed analysis module judges that the brake is normal.
Further, the method comprises the following steps: the "safe rotation speed threshold" has a rotation speed value of 200.
Compared with the prior art, the invention has the beneficial effects that:
1. the motor is started by the controller, the rotating wheel is driven to rotate when the motor works, a rotating speed threshold value is preset in the controller, the rotating speed of the rotating wheel is monitored in real time by a rotating speed monitor, when the rotating speed of the rotating wheel is more than 4000, the controller generates a brake command to control the brake to be started to brake the rotating wheel, the rotating speed of the rotating wheel in the braking state is obtained in real time, a safe rotating speed threshold value is preset in the rotating speed analysis module, the rotating speed analysis module is used for judging the real-time rotating speed of the rotating wheel in the braking state, when the real-time rotating speed of the rotating wheel in the braking state is greater than the safe rotating speed threshold value, the brake is judged to be abnormal, when the real-time rotating speed of the rotating wheel in the braking state is less than or equal to the safe rotating speed threshold value, the brake is judged to be normal, the motor is turned off, the rotating of the rotating wheel is stopped, and the abnormal brake can be monitored according to the real-time rotating speed of the rotating wheel in the braking state.
2. The brake effect of the brake can be monitored in five environments, the five environments are respectively a normal-temperature dry environment, a low-temperature dry environment, a high-temperature dry environment, a low-temperature humid environment and a high-temperature humid environment, the working environment of the brake is complex and diversified, and the operation monitoring of the brake is more comprehensive and reliable.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
A brake abnormality diagnosis method comprising the steps of:
step A: monitoring the braking state of the rotating wheel in a normal-temperature drying state, starting a motor by a controller, driving the rotating wheel to rotate when the motor works, presetting a rotating speed threshold value in the controller, monitoring the rotating speed of the rotating wheel in real time by a rotating speed monitor, and when the rotating speed of the rotating wheel is more than 4000, generating a brake instruction by the controller to control a brake to be started to brake the rotating wheel;
and B: the method comprises the steps of acquiring the rotating speed of a rotating wheel in a braking state in real time, presetting a 'safe rotating speed threshold' in a rotating speed analysis module, and judging the real-time rotating speed of the rotating wheel in the braking state through the rotating speed analysis module;
when the real-time rotating speed of the rotating wheel in the braking state is greater than the safe rotating speed threshold value, the rotating wheel is judged to be abnormal;
when the real-time rotating speed of the rotating wheel in the braking state is less than or equal to the safe rotating speed threshold value, the brake is judged to be normal, at the moment, the work of the motor is closed, and the rotation of the rotating wheel is stopped;
and C: monitoring the brake state of the brake in a high-temperature state through an environment simulator, wherein the environment simulator comprises a water sprayer, a cooling rod and a heating rod, and the rotating wheel is heated to 50 ℃ through the heating rod;
step D: starting a motor by a controller, driving a rotating wheel to rotate when the motor works, and referring to the steps A to B in a specific monitoring and judging mode;
step E: the temperature of the rotating wheel is reduced to minus 15 ℃ through a cooling rod, the braking state of a brake in a low-temperature state is monitored, a motor is started through a controller, the rotating wheel is driven to rotate when the motor works, and the specific monitoring and judging mode refers to the steps A to B;
step F: spraying moisture on the surface of the rotating wheel through a water sprayer, monitoring the braking state of the brake in a humid normal-temperature environment, starting a motor through a controller, driving the rotating wheel to rotate when the motor works, and referring to the steps A to B in a specific monitoring and judging mode;
step G: spraying moisture on the surface of the rotating wheel through a water sprayer, heating the rotating wheel to 50 ℃, monitoring the braking state of the brake in a moist and high-temperature environment, and referring to the steps A to B in a specific monitoring and judging mode;
step H: and (4) spraying moisture on the surface of the rotating wheel through a water sprayer, reducing the temperature of the rotating wheel to minus 15 ℃, monitoring the braking state of the brake in a low-temperature and humid environment, and referring to the steps A to B in a specific monitoring and judging mode.
The effective time of the rotating wheel real-time rotating speed judgment in the braking state is 10 seconds by the rotating speed analysis module, the judgment is carried out according to the lowest value of the rotating wheel real-time rotating speed in the braking state within 10 seconds, the judgment is 'brake abnormal' when the lowest rotating speed value within 10 seconds is larger than 'safe rotating speed threshold', and the judgment is 'brake normal' when the maximum rotating speed value within 10 seconds is smaller than or equal to 'safe rotating speed threshold'; the "safe rotational speed threshold" has a rotational speed value of 200.
When the invention is used, the brake effect of the brake is monitored in five environments, namely a normal-temperature dry environment, a low-temperature dry environment, a high-temperature dry environment, a low-temperature humid environment and a high-temperature humid environment, under the normal temperature drying environment, the motor is started by the controller, the rotating wheel is driven to rotate when the motor works, the rotating speed threshold value is preset in the controller, the rotating speed of the rotating wheel is monitored in real time by the rotating speed monitor, when the rotating speed of the rotating wheel is more than 4000, the controller generates a brake command to control the brake to be started to brake the rotating wheel, the rotating speed of the rotating wheel in the braking state is obtained in real time, a safe rotating speed threshold value is preset in the rotating speed analysis module, the rotating speed analysis module is used for judging the real-time rotating speed of the rotating wheel in the braking state, when the real-time rotating speed of the rotating wheel in the braking state is greater than the safe rotating speed threshold value, the rotating wheel is judged to be abnormal; when the real-time rotating speed of the rotating wheel in the braking state is less than or equal to the safe rotating speed threshold value, the brake is judged to be normal, the motor is turned off, the rotating of the rotating wheel is stopped, and the brake monitoring in the low-temperature drying environment, the high-temperature drying environment, the low-temperature humid environment and the high-temperature humid environment is the same as the brake monitoring in the normal-temperature drying environment.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. A brake abnormality diagnosis method characterized by comprising the steps of:
step A: monitoring the braking state of the rotating wheel in a normal-temperature drying state, starting a motor by a controller, driving the rotating wheel to rotate when the motor works, presetting a rotating speed threshold value in the controller, monitoring the rotating speed of the rotating wheel in real time by a rotating speed monitor, and when the rotating speed of the rotating wheel is more than 4000, generating a brake instruction by the controller to control a brake to be started to brake the rotating wheel;
and B: the method comprises the steps of acquiring the rotating speed of a rotating wheel in a braking state in real time, presetting a 'safe rotating speed threshold' in a rotating speed analysis module, and judging the real-time rotating speed of the rotating wheel in the braking state through the rotating speed analysis module;
when the real-time rotating speed of the rotating wheel in the braking state is greater than the safe rotating speed threshold value, the rotating wheel is judged to be abnormal;
when the real-time rotating speed of the rotating wheel in the braking state is less than or equal to the safe rotating speed threshold value, the brake is judged to be normal, at the moment, the work of the motor is closed, and the rotation of the rotating wheel is stopped;
and C: monitoring the brake state of the brake in a high-temperature state through an environment simulator, wherein the environment simulator comprises a water sprayer, a cooling rod and a heating rod, and the rotating wheel is heated to 50 ℃ through the heating rod;
step D: starting a motor by a controller, driving a rotating wheel to rotate when the motor works, and referring to the steps A to B in a specific monitoring and judging mode;
step E: the temperature of the rotating wheel is reduced to minus 15 ℃ through a cooling rod, the braking state of a brake in a low-temperature state is monitored, a motor is started through a controller, the rotating wheel is driven to rotate when the motor works, and the specific monitoring and judging mode refers to the steps A to B;
step F: spraying moisture on the surface of the rotating wheel through a water sprayer, monitoring the braking state of the brake in a humid normal-temperature environment, starting a motor through a controller, driving the rotating wheel to rotate when the motor works, and referring to the steps A to B in a specific monitoring and judging mode;
step G: spraying moisture on the surface of the rotating wheel through a water sprayer, heating the rotating wheel to 50 ℃, monitoring the braking state of the brake in a moist and high-temperature environment, and referring to the steps A to B in a specific monitoring and judging mode;
step H: and (4) spraying moisture on the surface of the rotating wheel through a water sprayer, reducing the temperature of the rotating wheel to minus 15 ℃, monitoring the braking state of the brake in a low-temperature and humid environment, and referring to the steps A to B in a specific monitoring and judging mode.
2. The brake abnormality diagnosis method according to claim 1, wherein the effective time for the real-time rotation speed determination of the wheel in the braking state by the rotation speed analysis module is 10 seconds, the determination is performed based on the lowest value of the real-time rotation speed of the wheel in the braking state within 10 seconds, the brake abnormality is determined when the lowest value of the rotation speed within 10 seconds is greater than the "safe rotation speed threshold", and the brake braking is determined to be normal when the maximum value of the rotation speed within 10 seconds is equal to or less than the "safe rotation speed threshold".
3. The brake abnormality diagnostic method according to claim 1, characterized in that the "safe rotation speed threshold" has a rotation speed value of 200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110071884.XA CN112857769A (en) | 2021-01-20 | 2021-01-20 | Brake abnormity diagnosis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110071884.XA CN112857769A (en) | 2021-01-20 | 2021-01-20 | Brake abnormity diagnosis method |
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| Publication Number | Publication Date |
|---|---|
| CN112857769A true CN112857769A (en) | 2021-05-28 |
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| CN202110071884.XA Pending CN112857769A (en) | 2021-01-20 | 2021-01-20 | Brake abnormity diagnosis method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113945370A (en) * | 2021-10-14 | 2022-01-18 | 安徽英杰精工机械有限公司 | Brake rotating speed monitoring and controlling method |
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Application publication date: 20210528 |