CN108843704A - Vehicular clutch control mechanism and means of defence based on voice coil motor driving - Google Patents
Vehicular clutch control mechanism and means of defence based on voice coil motor driving Download PDFInfo
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- CN108843704A CN108843704A CN201810974028.3A CN201810974028A CN108843704A CN 108843704 A CN108843704 A CN 108843704A CN 201810974028 A CN201810974028 A CN 201810974028A CN 108843704 A CN108843704 A CN 108843704A
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- clutch
- voice coil
- coil motor
- entire car
- car controller
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/064—Control of electrically or electromagnetically actuated clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention discloses a kind of vehicular clutch control mechanisms based on voice coil motor driving, it includes entire car controller, voice coil motor, electromagnetic lock, rocker-arm shift fork, release bearing, clutch.The driving signal input of the driving current output end connection voice coil motor of entire car controller, the control signal input of the digital switch quantity output module connection electromagnetic lock of entire car controller, it is opened up on the push rod of voice coil motor fluted, matching grooves on the tapered end and push rod of electromagnetic lock, the end of voice coil motor push rod is fixedly connected with the top of the separation Rocker arm section of rocker-arm shift fork, and the shift fork part of rocker-arm shift fork is fixedly connected with the outer ring of release bearing.The present invention realizes linear motion using voice coil motor, reduces the conversion equipments such as worm and gear or ball screw, structure is simple, noise is low, speed is fast, precision is high.
Description
Technical field
The present invention relates to technical field of automobile transmission, in particular to a kind of vehicular clutch control based on voice coil motor driving
Mechanism processed and means of defence.
Background technique
The vehicle of traditional simple internal combustion engine moving power drive realizes that engine moment steadily loads using clutch sliding wear.It is mixed
It closes in power car, has technical solution using planetary gear (as described in the patents such as ZL201110202014.8) or clutch is (such as
Described in the patents such as ZL201510738035.X) realize moment coupling between engine and motor.Conventional truck is largely adopted at present
With diaphragm spring clutch, use is highly developed, and manufacturing cost is low, and supply chain is stablized.More technical solution uses
Increase executing agency on the basis of diaphragm spring clutch, realizes that clutch is automatically separated, in conjunction with.
The Chinese patent of patent No. ZL201310077866.8 discloses a kind of hybrid vehicle clutch actuating mechanism,
The program is by cylinder, separation rocker arm, disengaging yoke, clutch, entire car controller, solenoid valve, filter, gas receiver, air compressor machine
And it is respectively arranged in the binding end magnetic switch and separating end magnetic switch composition of cylinder two sides.The program is as a kind of practice
Used in hybrid vehicle clutch actuating mechanism, the following disadvantage of exposure in actual use：
(1) since diaphragm spring clutch is largely normal-close clutch device, vehicle gas receiver air pressure deficiency (vehicle after parking
Gas circuit expands with heat and contract with cold in winter or causes sealing performance to decline using pipeline aging after 1~2 year, causes gas leakage) and air compressor machine work
When making abnormal (vehicle gas source carries air compressor machine usually from engine, when engine is inactive by additionally configure by
The electric compressor of vehicle low tension battery power supply, the electric compressor restricted lifetime).Since clutch closure leads to engine
It can not start, vehicle needs the clutch separation stand-by provision on vehicle outside plus (such as independent to disobey without separation gas source
By the artificial clutch separating mechanism of vehicle gas circuit power-assisted), or pry open clutch by force with tool and be allowed to separate, seriously affect vehicle
Normal use.
(2) clutch release travel is usually in 8~10mm, diaphragm spring clutch after using 8~120,000 kilometers due to
Abrasion or positioning pin drawing small, clutch arm stroke need it is artificial readjust adjustment positioning, these slight changes according to
Rely maintenance personal's maintenance inspection, has higher requirements to proficiency.If maintenance is not in place or personnel adjust misoperation,
It may cause entire car controller and have been sent from separation command, separation rocker arm has also acted, but clutch fails completely to separate, peace
Magnetic switch induction precision loaded on cylinder two sides is limited, fails accurate judgement clutch and is completely combined or is kept completely separate, may
Clutch quasi integration or sliding wear under stress condition for a long time are caused, it may scaling loss clutch when serious.
A kind of automatic clutch actuator of the Chinese patent of application number CN201711343952.3 with
ZL201310077866.8 is similar, equally exists above-mentioned drawback.
The patent of application number CN201710671640.9 is described using two motors and motor gear assembly, ball screw
Assembly etc. forms clutch actuating mechanism；
Application number CN201710049832.6 patent is described to be executed using motor and worm gear structure composition clutch
Mechanism.
Patent No. ZL201610880064.4 patent is described using motor, speed reducer, angular displacement sensor, worm and gear
Constitute clutch actuating mechanism.
Above scheme do not consider clutch abrasion cause executing agency act after clutch not really separate or combine
(i.e. executing agency's actuating length may need periodic maintenance, and maintenance relies on artificial experience, and there are failure risks).Or need ball
The intermediate conversions device such as screw rod or worm and gear converts rotational motion into linear motion.In fact, clutch is combined and is separated
Belong to a kind of linear motion, and voice coil motor be it is a kind of electric energy is directly changed into linear motion mechanical energy, without image rotation
Rotating motor adds intermediate conversion mechanism to realize linear motion.It is based on Ampere force principle, i.e., hot-wire coil, which is placed in magnetic field, generates power,
The size of power is directly proportional to the electric current being applied on coil, and changing size of current and polarity in voice coil motor hot-wire coil can change
The size and Orientation of power transformation magnetic force.It is simple with structure, without abrasion, the advantages such as noise is low, speed is fast, precision is high.
Summary of the invention
Present invention aim to provide it is a kind of based on voice coil motor driving vehicular clutch control mechanism and protection
Method, the present invention realize linear motion using voice coil motor, reduce the conversion equipments such as worm and gear or ball screw, eliminate gas
Cylinder and gas circuit mechanism are because of the drawbacks of decline of vehicle gas circuit sealing performance causes, and structure is simple, noise is low, speed is fast, precision is high.
A kind of vehicular clutch control mechanism based on voice coil motor driving designed by the present invention, it includes full-vehicle control
The separation shaft of device (Vehicle control unit, abbreviation VCU), voice coil motor, electromagnetic lock, rocker-arm shift fork and clutch
It holds, wherein the driving signal input of the driving current output end connection voice coil motor of entire car controller, entire car controller pass through
Digital switch quantity output module connects the control signal input of electromagnetic lock, open up on the push rod of the voice coil motor it is fluted,
Matching grooves on the tapered end and push rod of electromagnetic lock, the end of voice coil motor push rod are fixedly connected with the separation rocker arm of rocker-arm shift fork
The shift fork part on partial top, rocker-arm shift fork is fixedly connected with the outer ring of release bearing, and release bearing is close to clutch.
A kind of means of defence of above-mentioned vehicular clutch control mechanism, it includes the following steps：
Step 1：Entire car controller issues clutch separation instruction to voice coil motor；
Step 2：Voice coil motor instructs control push rod horizontal linear mobile according to clutch separation, to be dialled by rocker-arm
Fork and release bearing control clutch separation, while entire car controller obtains clutch two sides rotational speed difference, electric current according to CAN bus
Detection unit obtains the operating current of voice coil motor, presets when the voice coil motor operating current I of current detecting unit detection is less than
Breaking current threshold value Ith1 when；Alternatively, when the voice coil motor operating current I of current detecting unit detection is greater than preset short circuit
When current threshold Ith2；Entire car controller closes the electric current output of driving current output end, and issues failure code to instrument and mention
Wake up driver, and driver acts on after separation rocker arm separates clutch by force by external strength and presses danger alarm lamp, electricity
Magnetic padlock and voice coil motor push rod locking, vehicle, which is walked lamely, to be moved；Then judge whether clutch really separates in the following way；
When the voice coil motor operating current I of current detecting unit detection is in breaking current threshold value Ith1 and short circuiting work electric current
When between threshold value Ith2, illustrate that voice coil motor operating current is normal, at this point, if the signal of position detection unit transmission shows sound
The push rod of circle motor is moved into preset clutch separation calibration position X1, then entire car controller judges clutch two sides
The case where revolving speed is greater than 50rpm with the presence or absence of the revolving speed of any side of clutch, if there is the revolving speed of any side of clutch
Greater than 50rpm, then entire car controller continues to judge whether clutch two sides rotational speed difference is less than setting value Δ v1, and the duration is
It is no to be more than or equal to preset time t 1；It is greater than 50rpm if there is no the revolving speed of any side of clutch, then current time is preset
Clutch separation demarcates position X1 and defaults active position；
If clutch two sides rotational speed difference is less than setting value Δ v1, and the duration is more than or equal to preset time t 1, then says
Bright current time clutch is in bonding state, and preset clutch separation calibration position X1 is invalid, and entire car controller issues event
Barrier prompt code to vehicular meter reminds preset clutch separation calibration position X1 to need to readjust, and voluntarily pushes voice coil
Motor push rod proceeds to new position, until detect clutch two sides rotational speed difference be greater than the set value the Δ v2 duration be greater than etc.
In t2, illustrate that clutch really separates in place；
If clutch two sides rotational speed difference is greater than the set value Δ v2 and the duration is more than or equal to t2, current time is judged
Clutch confirmation separation, clutch separation calibration position X1 remain valid；
After confirming clutch separation in place, the tapered end and voice coil motor push rod locking of vehicle control unit controls electromagnetic lock, sound
Circle motor is no longer contributed, as far as possible reduction energy consumption；
Step 3：Entire car controller issues clutch to voice coil motor and combines instruction, the lock of vehicle control unit controls electromagnetic lock
Head is unlocked with voice coil motor push rod, and clutch combines automatically under internal action of reset spring, and entire car controller obtains clutch
Two sides rotational speed difference, only clutch two sides rotational speed difference are less than or equal to setting value Δ v3 and just think to be completely combined.
Invention also provides the vehicular clutch executing agency means of defences driven based on voice coil motor, for preventing
The true division state misjudgment of clutch causes clutch long-time quasi integration to cause scaling loss to clutch after using for a longer period.
That is VCU judges whether clutch separates in place according to position detection unit signal and clutch two sides revolving speed difference signal jointly, if
Do not separate then to issue diagnostic code in place and remind to instrument and driver and be considered as original position detection signal in vain, continue into
Row separating action, until confirmation clutch really separates.
Beneficial effects of the present invention：
1) relative to existing using air cylinder structure or decelerating motor+worm and gear or decelerating motor+ball screw knot
Structure, the present invention realize linear motion using voice coil motor, reduce the conversion equipments such as worm and gear or ball screw, structure is simple,
Noise is low, speed is fast, precision is high.Pneumatic actuator is eliminated because of vehicle gas leakage, is superimposed caused by electric compressor failure
Failure, eliminates loss caused by worm and gear or ball leading screw driving low efficiency.Meanwhile whole occupied space is smaller.
2) present invention confirmation clutch separation in place after, electromagnetic lock and voice coil motor push rod locking, voice coil motor can be with
It no longer contributes, reduces power consumption.The electromagnetism lockable mechanism can also agitate rocker arm by external force and wait under voice coil motor failure conditions
After clutch really separates, driver presses vehicle risk alarm switch, the digital quantity that entire car controller VCU is connected with electromagnetic lock
Output pin is no longer powered, electromagnetic lock and voice coil motor push rod locking, the separation of clutch maintenance.It can exist by traction electric machine
Continue movement of walking lamely under low-speed situations, vehicle is avoided to cast anchor.
3) present invention detects clutch master end by entire car controller and slave end rotational speed difference judges that clutch really divides
From or bonding state, do not completely depend on position sensor, and to electromagnetic coil short circuit, open circuit fault is made a decision；Have benefited from voice coil
Motor can judge in a very short period of time clutch state and act rapidly, avoid almost without sluggish action response characteristic
The failure of executing agency's actuating length causes scaling loss under clutch long-time half hitch conjunction state after abrasion is used for a long time because of clutch
Risk eliminates influence of the clutch status error to full-vehicle control.
Detailed description of the invention
For different hybrid vehicle configurations, Fig. 1 is that clutch two sides are separately connected engine flywheel in the present invention
With structural schematic diagram when traction electric machine；
Fig. 2 is separately connected structural schematic diagram when ISG motor and traction electric machine for clutch two sides in the present invention；
Fig. 3 is the functional block diagram of electric control part of the present invention.
Fig. 4 is that clutch separation and bonding state machine judge block diagram in the present invention
Wherein, 101-entire car controllers, 102-H-bridge circuit modules, 103-microprocessor chips, 104-current detectings
Unit, 105-digital switch quantity output modules, 201-voice coil motors, 202-push rods, 203-grooves, 301-electromagnetic locks,
302-tapered ends, 401-position detection units, 501-rocker-arm shift forks, 502-release bearings, 503-separation Rocker arm sections,
504-shift fork parts, 601-clutches.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail：
Vehicular clutch control mechanism based on voice coil motor driving as shown in Figure 1, as shown in Figures 1 to 3, it includes whole
Vehicle controller 101, voice coil motor 201, electromagnetic lock 301, rocker-arm shift fork 501 and clutch 601 (diaphragm spring clutch)
Release bearing 502, wherein the driving signal input of the driving current output end connection voice coil motor 201 of entire car controller 101
End, entire car controller 101 connect the control signal input of electromagnetic lock 301, the sound by digital switch quantity output module 105
It enclosing on the push rod 202 of motor 201 and opens up fluted 203, the tapered end 302 of electromagnetic lock 301 is matched with the groove 203 on push rod 202,
Tapered end 302 is unidirectional pyramidal structure, and the end of 201 push rod 202 of voice coil motor is fixedly connected with the separation rocker arm of rocker-arm shift fork 501
The shift fork part 504 on the top of part 503, rocker-arm shift fork 501 is fixedly connected with the outer ring of release bearing 502, release bearing
502 are close to clutch 601
In above-mentioned technical proposal, the voice coil motor 201 includes fixed part and action part.The voice coil motor 201
Fixed part is permanent magnet, and action part includes hot-wire coil and push rod 202.
In above-mentioned technical proposal, it further includes position detection unit 401, and the position detection unit 401 is mounted on voice coil
On motor 201, position detection unit 401 is used to detect the position of 201 push rod 202 of voice coil motor, and push rod position signal is anti-
It feeds the microprocessor chip 103 of entire car controller 101.
In above-mentioned technical proposal, include the power module for driving voice coil motor, the function in the entire car controller 101
Rate module is that a H-bridge circuit module 102 being made of field-effect tube (MOSFET) (is usually made of 4 metal-oxide-semiconductors, needs sound
Enclose motor forward direction it is mobile when No. 1 and No. 4 metal-oxide-semiconductors be connected, electric current is positive；When voice coil motor being needed to move backward, No. 2 and No. 3
Metal-oxide-semiconductor conducting, electric current is negative), the microprocessor chip 103 in entire car controller 101 generates pwm signal and drives H-bridge circuit mould
Block 102 generates the driving current for driving voice coil motor 201 to work.
It also include current detecting unit 104, current detecting unit in the entire car controller 101 in above-mentioned technical proposal
104 for detecting the electric current between the output end of H-bridge circuit module 102 and the driving signal input of voice coil motor 201, and will
Obtained current signal is transferred to microprocessor chip 103.
In above-mentioned technical proposal, the digital switch quantity output module 105, which generates digital quantity by microprocessor chip 103, to be believed
Number driving, and by 105 Current amplifier part of digital switch quantity output module amplification enhancing driving capability (microprocessor chip
103 can only generate the signal grade electric current of 5~10mA, this digital output end needs moment 2A to continue 0.1s, follow current
The driving capability of 0.1A).Digital switch quantity output module 105 is also equipped with reversed shutdown defencive function, for preventing load (herein
For electromagnetic lock 301) the reverse current impact generated is turned off suddenly.
In above-mentioned technical proposal, 601 two sides of clutch are separately connected engine flywheel and traction electric machine or clutch
601 two sides be separately connected ISG motor (Integrated Starter and Generator, automobile start power generation all-in-one machine) and
Traction electric machine (different depending on automotive power structure), the revolving speed of clutch two sides is by corresponding electric machine controller and engine
The revolving speed of ECU measurement, the clutch two sides measured passes through CAN (Controller Area Network, controller local
Network) message is sent to the CAN interface of entire car controller 101 with the renewal rate of 10ms/ frame.
In above-mentioned technical proposal, when the digital switch quantity that the entire car controller 101 exports is high level, electromagnetic lock 301
Tapered end 302 retract, electromagnetic lock 301 releases the locking to the push rod 202 of voice coil motor 201, and the entire car controller 101 exports
Digital switch quantity when being low level, the tapered end 302 of electromagnetic lock 301 stretches out, and the push rod 202 of voice coil motor 201 is by electromagnetism at this time
302 locking of tapered end of lock 301, the push rod 202 of voice coil motor 201 no longer move；
Entire car controller 101 can control the push rod 202 of voice coil motor 201 to translate, to by rocker-arm shift fork 501 and divide
502 control clutches 601 are held off axis to combine or disconnect；
Above-mentioned electromagnetic lock 301 can also agitate rocker arm by external force and wait for clutch under 201 failure conditions of voice coil motor
After 601 really separate, driver presses vehicle risk alarm switch, and the digital quantity that entire car controller 101 is connected with electromagnetic lock is defeated
Pin is no longer powered out, electromagnetic lock and voice coil motor push rod locking, the separation of clutch maintenance.It can be by traction electric machine low
Continue movement of walking lamely in fast situation, vehicle is avoided to cast anchor.
A kind of means of defence of above-mentioned vehicular clutch control mechanism, as shown in figure 4, it includes the following steps：
Step 1：Entire car controller 101 issues clutch separation instruction to voice coil motor 201；
Step 2：Voice coil motor 201 instructs control 202 horizontal linear of push rod mobile according to clutch separation, thus by shaking
Arm-type shift fork 501 and release bearing 502 control clutch 601 and separate, at the same entire car controller 101 according to CAN bus obtain from
601 two sides rotational speed difference of clutch, current detecting unit 104 obtains the operating current of voice coil motor 201, when current detecting unit 104
The 201 operating current I of voice coil motor of detection (i.e. believe by the driving of the output end and voice coil motor 201 of detection H-bridge circuit module 102
Electric current between number input terminal) (illustrate the H bridge electricity of entire car controller 101 at this time when being less than preset breaking current threshold value Ith1
Contact fault or the open circuit of 201 coil of voice coil motor between road module 102 and the driving signal input of voice coil motor 201)；Or
Person (says when the 201 operating current I of voice coil motor that current detecting unit 104 detects is greater than preset short circuit current threshold value Ith2
102 short circuit of H-bridge circuit module of bright entire car controller 101 or 201 coil short of voice coil motor)；Entire car controller 101 is closed
The electric current of driving current output end exports, and issues failure code to instrument and remind driver, and driver makees by external strength
Danger alarm lamp, electromagnetic lock 301 and voice coil motor push rod locking, vehicle are pressed for separating after rocker arm separates clutch by force
It walks lamely and moves；
Then judge whether clutch 601 really separates in the following way；
When the 201 operating current I of voice coil motor that stream detection unit 104 detects is in breaking current threshold value Ith1 and short circuiting work
When between current threshold Ith2, illustrate that 201 operating current of voice coil motor is normal, at this point, if what position detection unit 401 transmitted
Signal shows that the push rod 202 of voice coil motor is moved into preset clutch separation calibration position X1, then entire car controller 101
The case where revolving speed of 601 two sides of clutch is greater than 50rpm with the presence or absence of the revolving speed of any side of clutch 601 is judged, if deposited
Revolving speed in any side of clutch 601 is greater than 50rpm, then entire car controller 101 continues to judge 601 two sides rotational speed difference of clutch
Whether setting value Δ v1 is less than, and whether the duration is more than or equal to preset time t 1；If stationary vehicle and engine is put out
Fire, there is no the revolving speeds of any side of clutch 601 to be greater than 50rpm, and clutch two sides rotational speed difference is 0 at this time, cannot say completely
Whether bright clutch really separates, then current time preset clutch separation calibration position X1 defaults active position；
If driver start in stationary vehicle engine (at this time traction electric machine because vehicle stop revolving speed be 0,
Engine speed, which is typically larger than, is equal to idle speed value, such as 650rpm, 700rpm, 750rpm, not depending on the setting of engine idle speed value
Together), or not start in the case where engine with electric-only mode bend the throttle, vehicle traction electric machine revolving speed is higher than
50rpm meets clutch either side revolving speed greater than after 50rpm.VCU observes 601 two sides rotational speed difference of clutch less than setting at this time
It is worth Δ v1, and the duration is more than or equal to preset time t 1, then illustrates current time clutch 601 still in bonding state (
Through issuing separation command, and detect that disengaged position indicates X1, but actual speed difference is smaller), preset clutch separation
It is invalid to demarcate position X1, entire car controller 101 issues fault cues code to vehicular meter and reminds preset clutch separation mark
Positioning sets X1 and needs to readjust (clutch can be worn with 2 to three years, and original positioning x1 is no longer quasi- after abrasion, it is necessary to adjust)；
If 601 two sides rotational speed difference of clutch is greater than the set value Δ v2 and the duration is more than or equal to t2, judgement is current
The confirmation separation of moment clutch 601, clutch separation calibration position X1 remain valid；
After confirming the separation in place of clutch 601, entire car controller 101 controls the tapered end 302 and voice coil motor of electromagnetic lock 301
201 push rod, 202 locking, voice coil motor are no longer contributed, and power consumption is reduced；
Step 3：Entire car controller 101 issues clutch to voice coil motor 201 and combines instruction, and entire car controller 101 controls
(push rod 202 of voice coil motor 201 loses to release bearing for tapered end 302 and 201 push rod 202 of the voice coil motor unlock of electromagnetic lock 301
502 control), clutch 601 combines automatically under internal action of reset spring, and entire car controller 101 obtains 601 liang of clutch
Side rotational speed difference, only 601 two sides rotational speed difference of clutch are less than or equal to setting value Δ v3 and just think to be completely combined, in clutch 601
Clutch two sides revolving speed deviation is less than or equal to 3rpm in conjunction in the case where.
In the step 2 of above-mentioned technical proposal, if 601 two sides rotational speed difference of clutch is between setting value Δ v1 and setting value Δ
Between v2, then the state of clutch 601 and the state consistency of last moment are determined；
If 601 two sides rotational speed difference of clutch between setting value Δ v3 and setting value Δ v2, still retained upper a period of time
The judgement of quarter state, that is, think to be still separation state.
In above-mentioned technical proposal, the Ith1 is set as 0.1A, and Ith2 is set as 10A, and Δ v1 is set as 20rpm, and t1 is set
It is set to 50ms, Δ v2 is set as 30rpm, and t2 is set as 50ms, and Δ v3 is set as 3rpm.
It is whole after entire car controller 101 closes the electric current output of H-bridge circuit module 102 in the step 2 of above-mentioned technical proposal
Vehicle controller 101 is simultaneously emitted by corresponding fault code to instrument and prompts driver, while limiting vehicle power export-restriction and arriving
0, because voice coil motor can not push clutch open at this time, belonging to normally closed state does not allow motor-car, only fixes or is temporarily forced to divide with external force
It opens and allows after electromagnetic lock locking and press danger alarm lamp, then traveling of walking lamely.
In the step 2 of above-mentioned technical proposal, it is default to vehicular meter prompting that entire car controller 101 issues fault cues code
Clutch separation calibration position X1 need readjust after, control voice coil motor 201 push rod 202 be moved to new position simultaneously
It is re-scaled with X2, and continues to observe 601 two sides rotational speed difference of clutch, until confirmation clutch 601 is completely separated.
In the step 2 of above-mentioned technical proposal, it is contemplated that the sequencing and program of CAN message transmission trigger the period, and VCU can
Be less than 30ms in judge clutch two sides rotational speed difference.
The present invention converts electrical energy into linear motion feature using voice coil motor, and structure is simple, low, fast without abrasion, noise
Degree is fast, precision is high, and increases the logic judgment that the true division state of clutch is judged according to clutch two sides rotational speed difference, prevents
Clutch because executing agency it is not in place caused by long-term sliding wear and then scaling loss, eliminate clutch status error to the shadow of full-vehicle control
It rings.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of vehicular clutch control mechanism based on voice coil motor driving, it is characterised in that：It includes entire car controller
(101), the release bearing (502) of voice coil motor (201), electromagnetic lock (301), rocker-arm shift fork (501) and clutch (601),
Wherein, the driving signal input of driving current output end connection voice coil motor (201) of entire car controller (101), vehicle control
Control signal input of the device (101) processed by digital switch quantity output module (105) connection electromagnetic lock (301), the voice coil
Opened up fluted (203) on the push rod (202) of motor (201), the tapered end (302) of electromagnetic lock (301) with it is recessed on push rod (202)
Slot (203) matching, the end of voice coil motor (201) push rod (202) is fixedly connected with the separation Rocker arm section of rocker-arm shift fork (501)
(503) the shift fork part (504) on top, rocker-arm shift fork (501) is fixedly connected with the outer ring of release bearing (502).
2. the vehicular clutch control mechanism according to claim 1 based on voice coil motor driving, it is characterised in that：It is also
Including position detection unit (401), the position detection unit (401) is mounted on voice coil motor (201), position detection unit
(401) for detecting the position of voice coil motor (201) push rod (202), and push rod position signal is fed back into entire car controller
(101)。
3. the vehicular clutch control mechanism according to claim 1 based on voice coil motor driving, it is characterised in that：It is described
Comprising the power module for driving voice coil motor in entire car controller (101), which is one by field-effect tube group
At H-bridge circuit module (102), the microprocessor chip (103) in entire car controller (101) generates pwm signal driving H bridge electricity
Road module (102) generates the driving current for driving voice coil motor (201) to work.
4. the vehicular clutch control mechanism according to claim 3 based on voice coil motor driving, it is characterised in that：It is described
It also include current detecting unit (104) that current detecting unit (104) is for detecting H-bridge circuit module in entire car controller (101)
(102) electric current between the driving signal input of output end and voice coil motor (201), and obtained current signal is transmitted
Give microprocessor chip (103).
5. the vehicular clutch control mechanism according to claim 1 based on voice coil motor driving, it is characterised in that：Clutch
Device (601) two sides are separately connected engine flywheel and traction electric machine or clutch (601) two sides be separately connected ISG motor and
The revolving speed of traction electric machine, clutch two sides is measured by corresponding electric machine controller and Engine ECU, the clutch two measured
The revolving speed of side is sent to the CAN interface of entire car controller (101) by CAN message.
6. the vehicular clutch control mechanism according to claim 1 based on voice coil motor driving, it is characterised in that：It is described
When the digital switch quantity of entire car controller (101) output is high level, the tapered end (302) of electromagnetic lock (301) is retracted, electromagnetic lock
(301) locking to the push rod (202) of voice coil motor (201), the digital switch quantity of entire car controller (101) output are released
When for low level, the tapered end (302) of electromagnetic lock (301) stretches out, and the push rod (202) of voice coil motor (201) is by electromagnetic lock at this time
(301) tapered end (302) locking, the push rod (202) of voice coil motor (201) no longer move；
Entire car controller (101) can control push rod (202) translation of voice coil motor (201), to pass through rocker-arm shift fork (501)
It combines or disconnects with release bearing (502) control clutch (601).
7. the means of defence of vehicular clutch control mechanism described in a kind of claim 1, which is characterized in that it includes following step
Suddenly：
Step 1：Entire car controller (101) issues clutch separation instruction to voice coil motor (201)；
Step 2：Voice coil motor (201) instructs control push rod (202) to move horizontally according to clutch separation, to pass through rocker-arm
Shift fork (501) and release bearing (502) control clutch (601) separation, while entire car controller (101) is obtained according to CAN bus
Clutch (601) two sides rotational speed difference is taken, current detecting unit (104) obtains the operating current of voice coil motor (201), when electric current is examined
When surveying voice coil motor (201) the operating current I of unit (104) detection less than preset breaking current threshold value Ith1；Alternatively, when electricity
When flowing voice coil motor (201) the operating current I of detection unit (104) detection greater than preset short circuit current threshold value Ith2；Vehicle
Controller (101) closes the electric current output of driving current output end, and issues failure code to instrument and remind driver, driver
It is acted on after separation rocker arm separates clutch by force by external strength and presses danger alarm lamp, electromagnetic lock (301) and voice coil
Motor push rod locking, vehicle, which is walked lamely, to be moved；Then judge whether clutch (601) really separates in the following way；
When voice coil motor (201) operating current I of stream detection unit (104) detection is in breaking current threshold value Ith1 and short circuiting work
When between current threshold Ith2, illustrate that voice coil motor (201) operating current is normal, at this point, if position detection unit (401) passes
The signal sent shows that the push rod (202) of voice coil motor is moved into preset clutch separation calibration position X1, then vehicle control
Device (101) processed judges that the revolving speed of clutch (601) two sides is greater than 50rpm with the presence or absence of the revolving speed of clutch (601) any side
The case where, be greater than 50rpm if there is the revolving speed of any side of clutch (601), then entire car controller (101) continue to judge from
Whether clutch (601) two sides rotational speed difference is less than setting value Δ v1, and whether the duration is more than or equal to preset time t 1；If no
There are the revolving speeds of any side of clutch (601) to be greater than 50rpm, then current time preset clutch separation calibration position X1 is silent
Recognize active position；
If clutch (601) two sides rotational speed difference is less than setting value Δ v1, and the duration is more than or equal to preset time t 1, then says
Bright current time clutch (601) is in bonding state, and preset clutch separation calibration position X1 is invalid, entire car controller
(101) issuing fault cues code to vehicular meter reminds preset clutch separation calibration position X1 to need to readjust, and
Voluntarily voice coil motor (201) push rod (202) is pushed to proceed to new position, until detecting clutch (601) two sides rotational speed difference
The Δ v2 duration is greater than the set value more than or equal to t2, illustrates that clutch really separates in place；
If clutch (601) two sides rotational speed difference is greater than the set value Δ v2 and the duration is more than or equal to t2, when judging current
Clutch (601) confirmation separation is carved, clutch separation calibration position X1 remains valid；
After confirming clutch (601) separation in place, entire car controller (101) controls the tapered end (302) and voice coil of electromagnetic lock (301)
Motor (201) push rod (202) locking, voice coil motor are no longer contributed.
8. the means of defence of vehicular clutch control mechanism according to claim 7, it is characterised in that：After the step 2 also
Including step 3：Entire car controller (101) issues clutch to voice coil motor (201) and combines instruction, entire car controller (101) control
The tapered end (302) and voice coil motor (201) push rod (202) of electromagnetic lock (301) processed unlock, and clutch (601) is in internal reset bullet
The lower automatic combination of spring effect, entire car controller (101) obtain clutch (601) two sides rotational speed difference, only clutch (601) two sides
Rotational speed difference is less than or equal to setting value Δ v3 and just thinks to be completely combined.
9. the means of defence of vehicular clutch control mechanism according to claim 7, it is characterised in that：In the step 2, such as
Fruit clutch (601) two sides rotational speed difference then determines the state of clutch (601) between setting value Δ v1 and setting value Δ v2
With the state consistency of last moment；
If clutch (601) two sides rotational speed difference between setting value Δ v3 and setting value Δ v2, still retains last moment
State judgement.
10. the means of defence of vehicular clutch control mechanism according to claim 8, it is characterised in that：The Ith1 setting
It is set as 10A for 0.1A, Ith2, Δ v1 is set as 20rpm, and t1 is set as 50ms, and Δ v2 is set as 30rpm, and t2 is set as
50ms, Δ v3 are set as 3rpm.
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| CN112128271A (en) * | 2019-06-25 | 2020-12-25 | 北汽福田汽车股份有限公司 | Clutch control system and vehicle with same |
| CN112392881A (en) * | 2019-08-16 | 2021-02-23 | 北汽福田汽车股份有限公司 | Prompting method, device and system of clutch state and vehicle |
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| CN113022550A (en) * | 2019-12-24 | 2021-06-25 | 北京宝沃汽车股份有限公司 | Clutch control method and device for hybrid vehicle, storage medium and vehicle |
| CN115144751A (en) * | 2022-09-05 | 2022-10-04 | 西北工业大学 | Traction motor fault diagnosis device and method |
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| CN108843704B (en) | 2019-10-08 |
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Effective date of registration: 20220322 Address after: Building 3, Jinfeng Road, Dongfeng Automobile Avenue, high tech Zone, Xiangyang City, Hubei Province Patentee after: DONGFENG AUTOMOBILE Co.,Ltd. Address before: 441004 No. 1, Checheng Avenue, Xiangyang Automobile Industry Development Zone, Hubei Province Patentee before: DONGFENG XIANGYANG TOURING CAR Co.,Ltd. |