CN113623052A - Angle control method of tone tuning valve - Google Patents
Angle control method of tone tuning valve Download PDFInfo
- Publication number
- CN113623052A CN113623052A CN202111027631.9A CN202111027631A CN113623052A CN 113623052 A CN113623052 A CN 113623052A CN 202111027631 A CN202111027631 A CN 202111027631A CN 113623052 A CN113623052 A CN 113623052A
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- Prior art keywords
- angle
- valve
- stroke
- valve plate
- tuning valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention provides a method for controlling the angle of a tuning valve, which comprises the following steps: firstly, when a valve plate of a tuning valve is rigidly connected with a driving part thereof, measuring the number of Hall pulses corresponding to the valve plate in a complete angle stroke process, and recording the number of Hall pulses as PfAnd calculating to obtain the number P of Hall pulses corresponding to each unit angleper=Pf(ii)/m; after the tuning valve is elastically connected with a driving part thereof, each power-on working cycle of the tuning valve is performed, an initialization process is performed, and a compression pulse P generated by the valve plate at the initial point angle due to the compression state is calculatedlock=((P1+P2)/2‑Pf) 2; in the normal working process of the tuning valve, firstly, acquiring a target angle of a valve plate; subtracting the current angle from the target angle to obtain a rotation angle D of the current angle stroke; the number of Hall pulses required to be calculated in the angular travel is PD(ii) a By counting the number of Hall pulses PDControlling the starting and stopping of the motor of the tuning valve to realizeThe opening angle of the valve plate is controlled; the valve plate angle in the tuning valve can be accurately controlled.
Description
Technical Field
The invention relates to the field of control of a motor vehicle exhaust emission sound regulating valve (called a tuning valve for short), in particular to an angle control method of a tuning valve.
Background
In practical use, the angle of the valve plate of the motor vehicle tail gas emission sound regulating valve (called tuning valve for short) needs to be accurately regulated, but the valve plate and the turbine are elastically connected by virtue of the torsion spring, and the motor has a certain overshoot phenomenon, so that the angle of the valve plate is difficult to be accurately controlled in a control scheme of Hall pulse counting.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an angle control method of a tuning valve, which can accurately control the angle of a valve plate in the tuning valve. In order to achieve the technical purpose, the embodiment of the invention adopts the technical scheme that:
the embodiment of the invention provides a method for controlling the angle of a tuning valve, which comprises the following steps:
firstly, when a valve plate of a tuning valve is rigidly connected with a driving part thereof, measuring the number of Hall pulses corresponding to the valve plate in a complete angle stroke process, and recording the number of Hall pulses as PfAnd calculating to obtain the number P of Hall pulses corresponding to each unit angleper=PfM is the stroke amount of the valve plate angle stroke;
after the tuning valve is elastically connected with a driving component of the tuning valve, each power-on working cycle of the tuning valve is performed, and an initialization process is performed, so that the valve plate of the tuning valve respectively records the corresponding full-stroke Hall pulse number P through two complete angular stroke processes in the positive direction and the negative direction1、P2(ii) a Calculating the compression pulse P generated by the valve plate at the initial point angle due to the compression statelock=((P1+P2)/2-Pf)/2；
In the normal working process of the tuning valve, firstly, acquiring a target angle of a valve plate; subtracting the current angle from the target angle to obtain the current angleThe rotation angle D of the stroke; the number of Hall pulses required to be calculated in the angular travel is PD(ii) a By counting the number of Hall pulses PDControlling a motor of the tuning valve to start and stop so as to control the opening angle of the valve plate;
recording the overshoot pulse P of each angular stroke after each angular stroke stopover；
The number of Hall pulses required to be calculated for the angular travel is PDThe calculation is performed as follows:
PD=Pper*D+Plock±Pover
wherein, when the starting position of the angular travel is the first starting point angle or the second starting point angle, the above formula requires PlockOtherwise, it is not needed; if the angular stroke of the current time is the same as the steering angle of the previous time, the overshoot pulse of the previous time angular stroke, namely P, needs to be subtractedoverTaking a minus number in the front; if the angular stroke of the current time is opposite to the angle stroke of the last time in steering, an overshoot pulse of the angle stroke of the last time, namely P, needs to be addedoverAnd taking a plus sign before.
Further, the target angle is obtained by specifically querying a map table.
Further, the first starting point angle is 0 degrees.
Further, the second starting point angle is 90 degrees.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: based on the existing structure of the tuning valve, a more accurate angle control method of the tuning valve is designed; by the method, the rotation direction, the rotating speed and the starting and stopping of the motor can be controlled by calculating the number of the Hall pulses, so that the valve plate is controlled to operate to a target angle; the target angle is obtained by inquiring a calibration map table, and can be any position between 0 degree and 90 degrees (an integer angle value); the method and the device have the advantages that the consistency of parts is considered, the compaction pulse (for compensation) of the current cycle is obtained through the self-learning process in the power-on initialization process every time, and the accurate reliability of angle control is guaranteed; meanwhile, the problem of unavoidable overshoot in the rotation process of the motor is considered, the overshoot pulse is recorded, and the overshoot pulse compensation is carried out; the problem of valve block angle control inaccurate that the problem of overshooting, spare part uniformity, the problem of compressing locking produced has been solved fine.
Drawings
Fig. 1 is a schematic structural diagram of a tuning valve in an embodiment of the invention.
Fig. 2 is a flowchart of a control method in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The structure of a tuning valve which is commonly used at present is shown in fig. 1, and a motor 1, a detection magnetic ring 2 and a worm 4 are coaxially fixed; the motor 1 can rotate forwards and backwards; the detection magnetic ring 2 can adopt four pairs of pole magnetic rings; the Hall measurement module 3 is arranged opposite to the detection magnetic ring 2, the detection magnetic ring 2 rotates for a circle, and the Hall measurement module 3 detects 8 pulses, which are called Hall pulses in the application; the worm 4 is meshed with the worm wheel 5; in the present embodiment, the worm 4 and the worm wheel 5 have a transmission ratio of 57: 1; the turbine 5 is coaxially installed with the torsion spring 6 and the valve plate 7, wherein two ends of the torsion spring 6 are respectively connected with a shaft of the turbine 5 and a central shaft of the valve plate 7; the angle stroke of the valve plate 7 is from a first start point angle to a second start point angle, for example, from 0 degree to 90 degrees; the stroke quantity m of the valve plate angle stroke = a second starting point angle-a first starting point angle;
the working process of the tuning valve is as follows: the motor 1 drives the worm 4 to rotate, the worm 4 drives the worm wheel 5 to rotate, and the worm wheel 5 drives the valve plate 7 to rotate through the torsion spring 6; when the motor 1 rotates, the coaxially fixed detection magnetic ring 2 synchronously rotates, the Hall measurement module 3 collects Hall pulses in real time and calculates the rotating speed and the rotating angle of the motor; the valve plate 7 is driven to rotate to any angle within the range of 0-90 degrees by controlling the motor 1 to rotate;
since the valve plate 7 of the tuning valve is elastically connected with the turbine 5 (through the torsion spring 6), pressing force is generated at two initial points of the angular stroke (the first initial point angle 0 degree and the second initial point angle 90 degree of the valve plate), namely: at the starting point of the angular travel, the torsion spring 6 deforms; meanwhile, different torsion springs 6 have different torsion deformation; different motors 1 have different moments; therefore, in order to accurately control the angle of the valve plate 7 through the Hall pulse number, the flow of the tuning valve angle control method designed by the application is as follows:
firstly, the torsion spring 6 is cancelled, the valve plate 7 of the tuning valve is coaxially and rigidly connected with the turbine 5, the Hall pulse number corresponding to the valve plate 7 in a complete angle stroke process is measured and recorded as PfAnd calculating to obtain the number P of Hall pulses corresponding to each unit angleper=PfM is the stroke amount of the valve plate angle stroke; in one example, the valve plate 7 can rotate from 0 degree to 90 degrees, the stroke amount m =90 of the angular stroke, and the number P of hall pulses corresponding to the rotation of the valve plate 7 from 0 degree to 90 degreesf=135, number of hall pulses per unit angle Pper=PfM =135/90= 1.5; under the rigid connection structure, the Hall pulse number P is removed from the influence of measurement errorfIs fixed, so the measurement needs to be performed only once;
the tuning valve is installed in the exhaust pipe, and the locking of the positions of a first starting point angle of 0 degree and a second starting point angle of 90 degrees needs to be ensured, so when the target angle is the first starting point angle of 0 degree or the second starting point angle of 90 degrees, a pressing process needs to be added outside a stroke angle; the conditions for stopping the compression every time are controlled to be consistent, namely the deformation of the torsion spring generated by the compression of 0 degree of the first starting point angle and 90 degrees of the second starting point angle every time is consistent, and the compression pulse caused by the deformation of the torsion spring is consistent; after the tuning valve is elastically connected with the turbine 5, each power-on working cycle of the tuning valve is performed, and an initialization process is performed, so that the valve plate 7 of the tuning valve respectively records the corresponding full-stroke Hall pulse number P through two complete angular stroke processes in the positive direction and the negative direction1、P2(ii) a Calculating the pressing pulse P generated by the pressing state of the valve plate 7 at the initial point angle (0 degree or 90 degrees)lock=((P1+P2)/2-Pf) 2; in the normal working process, if the valve plate is rightThe front angle is 0 degree or 90 degrees, and when the automobile is rotated from the current angle, the deformation of the torsion spring needs to be released firstly, and then the angle stroke is generated, so that the compensation of the compression pulse needs to be carried out; in one example, the number of the full-stroke Hall pulses P corresponding to the process that the valve plate 7 of the tuning valve passes through two complete angular strokes in the positive direction and the negative direction1、P2Are respectively 145; the compacting pulse Plock=((P1+P2)/2-Pf)/2=5；
In the normal working process of the tuning valve, firstly, a target angle is obtained by inquiring a map table; subtracting the current angle from the target angle to obtain a rotation angle D of the current angle stroke; the number of Hall pulses required to be calculated in the angular travel is PD(ii) a By counting the number of Hall pulses PDControlling the starting and stopping of the motor 1 of the tuning valve to control the opening angle of the valve plate 7;
in the practical application process, the motor 1 has the condition of stop overshoot, namely the number P of the Hall pulses corresponding to the rotationDAfter the motor is controlled to stop, the motor can not be stopped immediately at the moment, an overshoot pulse is generated, and the overshoot pulse is marked as Pover(ii) a After each angular stroke (namely the rotation of the valve plate) is stopped, counting overshoot pulses generated by each angular stroke, and compensating in the process of the next angular stroke;
the number of Hall pulses required to be calculated for the angular travel is PDThe calculation is performed as follows:
PD=Pper*D+Plock±Pover
wherein, when the starting position of the angular travel is the first starting point angle or the second starting point angle, the above formula requires PlockOtherwise, it is not needed; if the angular stroke of the current time is the same as the steering angle of the previous time, the overshoot pulse of the previous time angular stroke, namely P, needs to be subtractedoverTaking a minus number in the front; if the angular stroke of the current time is opposite to the angle stroke of the last time in steering, an overshoot pulse of the angle stroke of the last time, namely P, needs to be addedoverTaking a plus sign before;
in one example, the valve plate 7 starts at 0 degrees and the last angular stroke is reversed (closing in the direction of 0 degrees)) Process pulse P of last angular strokeover= 3; inquiring the map table to obtain a target angle of 80 degrees; then P isD=Pper*D+Plock+Pover=1.5 × 80+5+3= 128; namely, 128 pulses are needed to rotate from the current angular position (0 degrees) to the target angular position (80 degrees), and the motor is controlled to stop.
According to the method, the number of Hall pulses corresponding to a single angle unit is accurately calculated, and the pressing pulses (for compensation) of 0-degree and 90-degree initial point angles and the overshoot pulses (for compensation) of each angle stroke are combined, so that the aim of accurately controlling the angle of the valve plate is finally achieved, and the control precision is controlled to +/-2 degrees.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (4)
1. A method for controlling the angle of a tuning valve is characterized by comprising the following steps:
firstly, when a valve plate of a tuning valve is rigidly connected with a driving part thereof, measuring the number of Hall pulses corresponding to the valve plate in a complete angle stroke process, and recording the number of Hall pulses as PfAnd calculating to obtain the number P of Hall pulses corresponding to each unit angleper=PfM is the stroke amount of the valve plate angle stroke;
after the tuning valve is elastically connected with a driving component of the tuning valve, each power-on working cycle of the tuning valve is performed, and an initialization process is performed, so that the valve plate of the tuning valve respectively records the corresponding full-stroke Hall pulse number P through two complete angular stroke processes in the positive direction and the negative direction1、P2(ii) a Calculating the compression pulse P generated by the valve plate at the initial point angle due to the compression statelock=((P1+P2)/2-Pf)/2；
In the normal working process of the tuning valve, the valve is obtained firstlyA target angle of the sheet; subtracting the current angle from the target angle to obtain a rotation angle D of the current angle stroke; the number of Hall pulses required to be calculated in the angular travel is PD(ii) a By counting the number of Hall pulses PDControlling a motor of the tuning valve to start and stop so as to control the opening angle of the valve plate;
recording the overshoot pulse P of each angular stroke after each angular stroke stopover；
The number of Hall pulses required to be calculated for the angular travel is PDThe calculation is performed as follows:
PD=Pper*D+Plock±Pover
wherein, when the starting position of the angular travel is the first starting point angle or the second starting point angle, the above formula requires PlockOtherwise, it is not needed; if the angular stroke of the current time is the same as the steering angle of the previous time, the overshoot pulse of the previous time angular stroke, namely P, needs to be subtractedoverTaking a minus number in the front; if the angular stroke of the current time is opposite to the angle stroke of the last time in steering, an overshoot pulse of the angle stroke of the last time, namely P, needs to be addedoverAnd taking a plus sign before.
2. The tuning valve angle control method of claim 1,
and acquiring the target angle, specifically acquiring the target angle by inquiring the map table.
3. The tuning valve angle control method of claim 1,
the first starting point angle is 0 degrees.
4. The tuning valve angle control method of claim 1,
the second starting point angle is 90 degrees.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111027631.9A CN113623052B (en) | 2021-09-02 | 2021-09-02 | Angle control method of tone tuning valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111027631.9A CN113623052B (en) | 2021-09-02 | 2021-09-02 | Angle control method of tone tuning valve |
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| CN113623052A true CN113623052A (en) | 2021-11-09 |
| CN113623052B CN113623052B (en) | 2022-08-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508624A (en) * | 2022-01-25 | 2022-05-17 | 苏州普科环境技术有限公司 | Control method and system for electric tuning controller of exhaust pipe and storage medium |
| CN114704679A (en) * | 2022-04-15 | 2022-07-05 | 杭州老板电器股份有限公司 | Air valve angle control method and device, air valve and storage medium |
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| JP2013007671A (en) * | 2011-06-24 | 2013-01-10 | Denso Corp | Rotational angle detector and actuator using the same |
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| US20190176810A1 (en) * | 2017-12-13 | 2019-06-13 | Ford Global Technologies, Llc | Methods and systems for exhaust tuning valve diagnostics |
| CN112622787A (en) * | 2019-09-24 | 2021-04-09 | 上海汽车集团股份有限公司 | Electronic tuning valve control method and device |
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2021
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040107934A1 (en) * | 2002-12-06 | 2004-06-10 | Daimlerchrysler Corporation | Integrated inlet manifold tuning valve and charge motion control device for internal combustion engines |
| US20080052042A1 (en) * | 2006-08-24 | 2008-02-28 | Mc Lain Kurt D | Intake manifold tuning valve fuzzy logic diagnostic |
| JP2013007671A (en) * | 2011-06-24 | 2013-01-10 | Denso Corp | Rotational angle detector and actuator using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508624A (en) * | 2022-01-25 | 2022-05-17 | 苏州普科环境技术有限公司 | Control method and system for electric tuning controller of exhaust pipe and storage medium |
| CN114704679A (en) * | 2022-04-15 | 2022-07-05 | 杭州老板电器股份有限公司 | Air valve angle control method and device, air valve and storage medium |
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| CN113623052B (en) | 2022-08-16 |
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