CN109645856A - Control method, cooking machine and the storage medium of brshless DC motor - Google Patents
Control method, cooking machine and the storage medium of brshless DC motor Download PDFInfo
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- CN109645856A CN109645856A CN201811629127.4A CN201811629127A CN109645856A CN 109645856 A CN109645856 A CN 109645856A CN 201811629127 A CN201811629127 A CN 201811629127A CN 109645856 A CN109645856 A CN 109645856A
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- motor
- brshless
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- stall
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
- A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
- A47J43/07—Parts or details, e.g. mixing tools, whipping tools
- A47J43/08—Driving mechanisms
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- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of control methods of brshless DC motor, this method comprises: detecting whether the brshless DC motor occurs stall during the brshless DC motor is rotated towards preset direction；If detecting, stall occurs for the brshless DC motor, controls the brshless DC motor towards the direction rotation predetermined angle opposite with the preset direction；After the brshless DC motor rotates predetermined angle towards the direction opposite with the preset direction, controls the brshless DC motor and started turning towards the preset direction.The invention also discloses a kind of cooking machines and a kind of storage medium.The present invention is able to solve the technical issues of existing brshless DC motor is easy to happen stall.
Description
Technical field
The present invention relates to cooking machine technical field more particularly to the control methods of brshless DC motor, cooking machine and storage
Medium.
Background technique
Cooking machine be integrate beat soya-bean milk, mill dry powder, squeezed juice, beat the functions such as meat stuffing, water ice, for make fruit juice,
The household electrical appliance of the numerous foods such as soya-bean milk, jam, dry powder, water ice, meat stuffing are that juice extractor becomes to compare the product after diversification.
Cooking machine can break the cell wall of food, and the various nutrients in food is made to be more conducive to absorption of human body.
Traditional cooking machine is generally using there is the driving of brush series excited machine, with the presence of the vibration of brush series excited machine is big, noise is big, the longevity
Order short defect.There is a kind of cooking machine using brshless DC motor on the market at present, can effectively solve brush series excited machine
Existing vibration is big, and noise is big, service life short defect, however, being used on cooking machine at present due to being limited by volume and cost
The general power of brshless DC motor it is smaller, starting torque is lower, this leads to cooking machine, and cutter is easy to be stuck on startup,
And then cause brshless DC motor that stall occurs, affect the normal operation of cooking machine.
Summary of the invention
It is a primary object of the present invention to propose a kind of control method of brshless DC motor, cooking machine and storage medium,
Aim to solve the problem that the technical issues of existing brshless DC motor is easy to happen stall.
To achieve the above object, the present invention provides a kind of control method of brshless DC motor, and the method includes as follows
Step:
During the brshless DC motor is rotated towards preset direction, whether the brshless DC motor is detected
Stall occurs；
If detecting, stall occurs for the brshless DC motor, controls the brshless DC motor court and the default side
Predetermined angle is rotated in the opposite direction；
After the brshless DC motor rotates predetermined angle towards the direction opposite with the preset direction, the nothing is controlled
Brushless motor is started turning towards the preset direction.
Preferably, described during the brshless DC motor is rotated towards preset direction, it detects described brushless
The step of whether direct current generator occurs stall include:
When the brshless DC motor starts turning the first preset duration towards preset direction, the brushless dc is obtained
The current rotating speed of machine；
Judge whether the current rotating speed is greater than or equal to preset first revolving speed；
If the current rotating speed is less than first revolving speed, determine that stall occurs for the brshless DC motor.
Preferably, it is described judge the step of whether current rotating speed is greater than or equal to preset first revolving speed after, also
Include:
If the current rotating speed is greater than or equal to first revolving speed, three Lu Huoer of the brshless DC motor are detected
The jump situation of signal, judge in the hall signal of three road with the presence or absence of at least all the way hall signal in the second preset duration
It does not jump；
If existing in the hall signal of three road, at least hall signal does not jump in the second preset duration all the way,
Determine that stall occurs for the brshless DC motor.
Preferably, the jump situation of three road hall signals of the detection brshless DC motor, judges three tunnel
Include: with the presence or absence of the step of at least hall signal does not jump in the second preset duration all the way in hall signal
Three timers are enabled to the corresponding progress timing of three road hall signals of the brshless DC motor, in timing course
In, if detecting, any road hall signal in the hall signal of three road is jumped, and it is corresponding to control the road hall signal
Timer start from scratch reclocking；
The timing duration for obtaining three timers respectively, judge the timing duration whether be greater than second it is default when
It is long；
If there are the timing durations of at least one timer to be greater than the second preset duration in three timers, determine
In the presence of at least hall signal does not jump in the second preset duration all the way in the hall signal of three road.
Preferably, described during the brshless DC motor is rotated towards preset direction, it detects described brushless
After the step of whether direct current generator occurs stall, further includes:
If detecting, stall does not occur for the brshless DC motor, controls the brshless DC motor cutting speed closed loop
Mode operation, under the speed closed loop mode, the revolving speed of the brshless DC motor is remained unchanged.
In addition, to achieve the above object, the present invention also provides a kind of cooking machine, the cooking machine includes brshless DC motor
And master controller, wherein
The brshless DC motor is connect with stirring cutter, for driving the stirring cutter to rotate；
The master controller, for detecting institute during the brshless DC motor is rotated towards preset direction
State whether brshless DC motor occurs stall；If detecting, stall occurs for the brshless DC motor, controls described brushless straight
Galvanic electricity machine rotates predetermined angle towards the direction opposite with the preset direction；When the brshless DC motor court and the default side
After rotating predetermined angle in the opposite direction, controls the brshless DC motor and started turning towards the preset direction.
Preferably, the master controller is also used to start turning first towards preset direction in the brshless DC motor pre-
If when duration, obtaining the current rotating speed of the brshless DC motor；It is preset to judge whether the current rotating speed is greater than or equal to
First revolving speed；If the current rotating speed is less than first revolving speed, determine that stall occurs for the brshless DC motor.
Preferably, the master controller detects if being also used to the current rotating speed more than or equal to first revolving speed
The jump situation of three road hall signals of the brshless DC motor judges in the hall signal of three road with the presence or absence of at least one
Road hall signal does not jump in the second preset duration；If there is at least hall signal all the way in the hall signal of three road
It is not jumped in the second preset duration, then determines that stall occurs for the brshless DC motor.
Preferably, the master controller is also used to enable three timers to three Lu Huoer of the brshless DC motor
Signal is corresponding to carry out timing, and in timing course, if detecting, any road hall signal in the hall signal of three road occurs
Jump then controls the corresponding timer of road hall signal and starts from scratch reclocking；Three timers are obtained respectively
Timing duration, judges whether the timing duration is greater than the second preset duration；If in three timers, there are at least one
The timing duration of timer is greater than the second preset duration, then determines there is at least hall signal all the way in the hall signal of three road
It is not jumped in the second preset duration.
Preferably, the master controller, if being also used to detect, stall does not occur for the brshless DC motor, controls institute
Brshless DC motor cutting speed closed loop mode is stated to run, under the speed closed loop mode, the revolving speed of the brshless DC motor
It remains unchanged
Preferably, the cooking machine further includes busbar voltage current sampling module, phase voltage current sampling module and inversion
Device, wherein
The busbar voltage current sampling module, for acquiring the busbar voltage and bus electricity of the brshless DC motor
Stream；
The phase voltage current sampling module, for acquiring the phase voltage and phase current of the brshless DC motor；
The master controller is also used to obtain the bus when the brshless DC motor cutting speed closed loop mode
The collected busbar voltage of voltage and current sampling module and bus current and phase voltage current sampling module acquisition
The phase voltage and phase current arrived；It is calculated according to the busbar voltage, bus current, phase voltage and phase current described brushless straight
The current rotor position of galvanic electricity machine exports corresponding alternating voltage electric current according to inverter described in the current rotor position control
To drive the brshless DC motor to run.
In addition, to achieve the above object, the present invention also provides a kind of storage medium, being stored on the storage medium brushless
The control program of direct current generator is realized as described above brushless when the control program of the brshless DC motor is executed by processor
The step of control method of direct current generator.
The present invention detects the brushless dc during brshless DC motor is rotated towards preset direction
Whether machine occurs stall；If detecting, stall occurs for the brshless DC motor, controls the brshless DC motor court and institute
State the opposite direction rotation predetermined angle of preset direction；When the brshless DC motor court direction opposite with the preset direction
After rotating predetermined angle, controls the brshless DC motor and started turning towards the preset direction.Due to brshless DC motor
Stall is typically due to caused by the cutter that it is driven is stuck, therefore the present invention passes through stall occurs in brshless DC motor
When, control brshless DC motor reversion so as to drive cutter to invert, makes cutter not be stuck, to solve existing
Brshless DC motor is easy to happen the technical issues of stall.
Detailed description of the invention
Fig. 1 is the flow diagram of the control method first embodiment of brshless DC motor of the present invention；
Fig. 2 is the refinement step schematic diagram of step S10 in Fig. 1；
Fig. 3 is the structural schematic diagram of cooking machine in cooking machine second embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention proposes a kind of control method of brshless DC motor.
Referring to Fig.1, Fig. 1 is the flow diagram of the control method first embodiment of brshless DC motor of the present invention, described
Method includes:
Step S10 detects the brushless direct-current during brshless DC motor is rotated towards preset direction
Whether motor occurs stall；
In the present embodiment, brshless DC motor refers to a kind of low powered DC motor with electronic commutation, also known as without changing
To device motor, commutatorless dc motor, an anti-dress formula dc motor is equivalent in structure, its armature is put
It sets on stator, rotor is permanent magnet.
The control method of the present embodiment brshless DC motor can be applied to the cooking machine for being equipped with brshless DC motor,
Middle brshless DC motor is connect with stirring cutter, for driving the stirring of stirring cutter and smashing food.In the present embodiment, brushless
During direct current generator is rotated towards preset direction, detect whether the brshless DC motor occurs stall, wherein default side
To can be clockwise, it is also possible to counterclockwise, whether detection brshless DC motor occurs stall, it can be real-time detection,
It can be according to preset frequency detecting, when specific implementation can flexible setting.
It as an implementation, is the refinement step schematic diagram of step S10 in Fig. 1, above-mentioned steps referring to Fig. 2, Fig. 2
S10 may further include:
Step S11 obtains the nothing when the brshless DC motor starts turning the first preset duration towards preset direction
The current rotating speed of brushless motor；
Step S12, judges whether the current rotating speed is greater than or equal to preset first revolving speed；
If the current rotating speed is less than first revolving speed, S13 is thened follow the steps, determines that the brshless DC motor occurs
Stall.
Specifically, brushless straight to detect since the brshless DC motor on cooking machine is easiest to that stall occurs on startup
Whether galvanic electricity machine occurs stall in startup stage, when brshless DC motor is started turning towards preset direction, can enable certain
When device carry out timing, when the timing duration of the timer reaches the first preset duration, obtain brshless DC motor works as forward
Speed, wherein the first preset duration is to be easiest to that the duration of stall occurs after preset brshless DC motor self-starting, such as can be with
It is set as 5s, 10s etc.；Then, judge whether the current rotating speed is greater than or equal to preset first revolving speed, which represents
The revolving speed that brshless DC motor should reach under normal circumstances in preset duration, when specific implementation, can flexible settings；If working as
Preceding revolving speed is less than preset first revolving speed, then can be determined that stall has occurred in brshless DC motor.
Further, after above-mentioned steps S12, if can also include: that the current rotating speed is greater than or equal to described first
Revolving speed then detects the jump situation of three road hall signals of the brshless DC motor, judge be in the hall signal of three road
At least hall signal does not jump in the second preset duration all the way for no presence；If existing at least in the hall signal of three road
Hall signal does not jump in the second preset duration all the way, then determines that stall occurs for the brshless DC motor.
If current rotating speed is greater than or equal to the first revolving speed, illustrate that in startup stage stall does not occur for brshless DC motor,
The jump situation of three road hall signals of brshless DC motor can be further detected at this time.
In the present embodiment, hall signal refers to the rotor-position signal of brshless DC motor, brshless DC motor rotor position
Confidence number (hall signal) controls inverter commutation, and this requires hall signals to have correctly corresponding pass with three-phase stator winding
System.When stall occurs for brshless DC motor, thirdly at least will be present in the hall signal of road all the way, hall signal will not be according to pre-
If frequency jumps, therefore, when detect in three road hall signals exist at least all the way hall signal in the second preset duration
When not jumping inside, it is possible to determine that stall occurs for the brshless DC motor.
Further, with the presence or absence of at least hall signal is default second all the way in the above-mentioned judgement three roads hall signal
The step of not jumping in duration may include: to enable three timers to three road hall signals of the brshless DC motor
Corresponding to carry out timing, in timing course, if detecting, any road hall signal in the hall signal of three road is jumped,
The corresponding timer of road hall signal is then controlled to start from scratch reclocking；When obtaining the timing of three timers respectively
It is long, judge whether the timing duration is greater than the second preset duration；If in three timers, there are at least one timers
Timing duration be greater than the second preset duration, then determine in the hall signal of three road exist at least all the way hall signal second
It is not jumped in preset duration.
For example, brshless DC motor there are three road hall signal A, B, C, then three timers T1, T2, T3 are enabled to accrued
When, by taking T1 as an example, in T1 timing course, if detecting, the road A hall signal is jumped, and is controlled T1 zero setting and is restarted
Timing, if motor is bipolar machine, hall signal A, which often turns over 180 degree just in motor, will do it primary jump, motor rotation
Signal jump twice will occur for one circle hall signal A, if regulation motor rotation speed is stall, Hall letter lower than 1 revolutions per second
Number A need at least occur to jump twice each second, i.e., the timing duration of T1 does not exceed 0.5 second, if if the i.e. timing duration of T1
More than 0.5 second, then motor speed was lower than 1 revolutions per second, can be determined that stall has occurred in motor at this time.
The shake in 60 degree due to motor in order to prevent, causes the jump of some hall signal high-frequency and motor does not turn
It is dynamic, to cause erroneous judgement, three road hall signals can be detected, as long as detecting that wherein some corresponds to timer
Timing duration is greater than the second preset duration, then can be determined that as stall.Specifically, master controller obtains the meter of T1, T2, T3 respectively
Shi Shichang, and T1, T2, T3 are compared with the second preset duration respectively, if in T1, T2, T3 when the timing of any timer
It is long to be greater than the second preset duration, then can be determined that in three road hall signals exist at least all the way hall signal in the second preset duration
Do not jump inside, stall has occurred in motor, wherein the second preset duration can according to preset stall revolving speed flexible setting,
Preset stall revolving speed is lower, and the second preset duration is longer.
If detecting, stall occurs for the brshless DC motor, thens follow the steps S20, controls the brshless DC motor court
The direction opposite with the preset direction rotates predetermined angle；
In the present embodiment, if detecting, stall occurs for brshless DC motor, controls brshless DC motor court and institute
State the opposite direction rotation predetermined angle of preset direction, wherein predetermined angle can be with flexible setting.
Conversely, can control brshless DC motor incision if the brshless DC motor, which is not detected, occurs stall
Speed closed loop mode operation, under speed closed loop mode, the revolving speed of the brshless DC motor is remained unchanged, and is so conducive to improve material
The food crush efficiency of reason machine.
Step S30, after the brshless DC motor rotates predetermined angle towards the direction opposite with the preset direction, control
The brshless DC motor is made to start turning towards the preset direction.
Specifically, when preset direction is clockwise, if detecting, stall occurs for brshless DC motor, controls it towards inverse
After clockwise rotates predetermined angle, then controls it and rotate clockwise；When preset direction is counterclockwise, if detecting brushless straight
Stall occurs for galvanic electricity machine, then controls after it rotates predetermined angle toward the clockwise direction, then control it and rotate counterclockwise.
Since the stall of brshless DC motor is typically due to this implementation caused by the cutter that it is driven is stuck
Example is by the way that when stall occurs for brshless DC motor, control brshless DC motor reversion so as to drive cutter to invert, makes knife
Tool is not stuck, to solve the technical issues of existing brshless DC motor is easy to happen stall.
The present invention also provides a kind of cooking machines.
In cooking machine first embodiment of the present invention, which includes brshless DC motor and master controller, in which:
The brshless DC motor is connect with stirring cutter, for driving the stirring cutter to rotate；
The master controller, for detecting institute during the brshless DC motor is rotated towards preset direction
State whether brshless DC motor occurs stall；If detecting, stall occurs for the brshless DC motor, controls described brushless straight
Galvanic electricity machine rotates predetermined angle towards the direction opposite with the preset direction；When the brshless DC motor court and the default side
After rotating predetermined angle in the opposite direction, controls the brshless DC motor and started turning towards the preset direction.
Further, the master controller is also used to start turning first towards preset direction in the brshless DC motor
When preset duration, the current rotating speed of the brshless DC motor is obtained；It is default to judge whether the current rotating speed is greater than or equal to
The first revolving speed；If the current rotating speed is less than first revolving speed, determine that stall occurs for the brshless DC motor.
Further, the master controller is examined if being also used to the current rotating speed more than or equal to first revolving speed
The jump situation for surveying three road hall signals of the brshless DC motor judges in the hall signal of three road with the presence or absence of at least
Hall signal does not jump in the second preset duration all the way；If existing in the hall signal of three road at least, Hall is believed all the way
It number is not jumped in the second preset duration, then determines that stall occurs for the brshless DC motor.
Further, the master controller is also used to enable three timers to three tunnels of the brshless DC motor suddenly
Your signal is corresponding to carry out timing, in timing course, if detecting any road hall signal hair in the hall signal of three road
Raw jump then controls the corresponding timer of road hall signal and starts from scratch reclocking；Three timers are obtained respectively
Timing duration, judge whether the timing duration is greater than the second preset duration；If having at least one in three timers
The timing duration of a timer is greater than the second preset duration, then determines in the hall signal of three road in the presence of at least Hall is believed all the way
It number is not jumped in the second preset duration.
Further, the master controller, if being also used to detect, stall does not occur for the brshless DC motor, controls
The brshless DC motor cutting speed closed loop mode is run, and under the speed closed loop mode, the brshless DC motor turns
Speed remains unchanged.
Operation performed by above-mentioned master controller is referred to the control method embodiment of brshless DC motor of the present invention, this
Place repeats no more.
Further, it is based on cooking machine first embodiment of the present invention, proposes cooking machine second embodiment of the present invention.
It is the structural schematic diagram of cooking machine in cooking machine second embodiment of the present invention referring to Fig. 3, Fig. 3, removes brushless dc
Outside machine and master controller, which can also include: busbar voltage current sampling module, phase voltage current sampling module and inverse
Become device, wherein busbar voltage current sampling module, phase voltage current sampling module and inverter respectively with the brushless dc
Machine is connected with the master controller；
The busbar voltage current sampling module, for acquiring the busbar voltage and bus electricity of the brshless DC motor
Stream；
The phase voltage current sampling module, for acquiring the phase voltage and phase current of the brshless DC motor；
The master controller is also used to obtain the bus when the brshless DC motor cutting speed closed loop mode
The collected busbar voltage of voltage and current sampling module and bus current and phase voltage current sampling module acquisition
The phase voltage and phase current arrived；It is calculated according to the busbar voltage, bus current, phase voltage and phase current described brushless straight
The current rotor position of galvanic electricity machine exports corresponding alternating voltage electric current according to inverter described in the current rotor position control
To drive the brshless DC motor to run.
It in the present embodiment, is to realize velocity close-loop control, in brshless DC motor operational process, master controller can be with
The busbar voltage and bus current and phase voltage electricity of the acquisition collected brshless DC motor of busbar voltage current sampling module
The phase voltage and phase current for flowing the collected brshless DC motor of sampling module, then according to the busbar voltage, bus current, phase
Voltage and phase current calculate the current rotor position of brshless DC motor, and then defeated according to the current rotor position control inverter
To drive brshless DC motor to run a close loop control circuit is consequently formed, so that brushless in corresponding alternating voltage electric current out
The revolving speed of direct current generator remains unchanged.
Further, the present embodiment cooking machine can also include heating tube, radiator fan and temperature sensor, wherein heating
For pipe for heating to food, radiator fan is used for system radiating, and master controller can be also used for by the way of losing wave pair
Heating tube carries out Power Regulation control, and obtains the collected system temperature of temperature sensor and radiated with being controlled according to the system temperature
The switch of fan, the speed of service are such as run according to the different control radiator fans of system temperature with different revolving speeds.In addition, main
Controller can also be monitored the operating status of motor, protect when being abnormal situation to system, including overcurrent
Protection, overvoltage/undervoltage protection, rotation-clogging protection, open-phase protection, overheat protector etc..
Further, the present embodiment cooking machine can also include Users panel, lead between the Users panel and master controller
It crosses communication interface to be communicated, which uses isolation design, uses UART (Universal Asynchronous
Receiver/Transmitter, universal asynchronous receiving-transmitting transmitter) it communicates, communication baud rate may range from 1200bps-
115200bps。
The present invention also provides a kind of storage mediums.
The control program of brshless DC motor, the control journey of the brshless DC motor are stored on storage medium of the present invention
The step of control method of brshless DC motor as described above is realized when sequence is executed by processor.
Wherein, the control program of the brshless DC motor run on the processor is performed realized method can
Referring to the control method embodiment of brshless DC motor of the present invention, details are not described herein again.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that terminal device (it can be mobile phone,
Computer, server, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (12)
1. a kind of control method of brshless DC motor, which is characterized in that the control method of the brshless DC motor includes such as
Lower step:
During the brshless DC motor is rotated towards preset direction, detect whether the brshless DC motor occurs
Stall；
If detecting, stall occurs for the brshless DC motor, controls the brshless DC motor court and the preset direction phase
Anti- direction rotates predetermined angle；
After the brshless DC motor rotates predetermined angle towards the direction opposite with the preset direction, control described brushless straight
Galvanic electricity machine is started turning towards the preset direction.
2. the control method of brshless DC motor as described in claim 1, which is characterized in that described in the brushless dc
During machine is rotated towards preset direction, detect that the step of whether brshless DC motor occurs stall includes:
When the brshless DC motor starts turning the first preset duration towards preset direction, the brshless DC motor is obtained
Current rotating speed；
Judge whether the current rotating speed is greater than or equal to preset first revolving speed；
If the current rotating speed is less than first revolving speed, determine that stall occurs for the brshless DC motor.
3. the control method of brshless DC motor as claimed in claim 2, which is characterized in that the judgement current rotating speed
After the step of whether being greater than or equal to preset first revolving speed, further includes:
If the current rotating speed is greater than or equal to first revolving speed, three road hall signals of the brshless DC motor are detected
Jump situation, judge in the hall signal of three road with the presence or absence of at least hall signal is not sent out in the second preset duration all the way
Raw jump；
If existing in the hall signal of three road, at least hall signal does not jump in the second preset duration all the way, determines
Stall occurs for the brshless DC motor.
4. the control method of brshless DC motor as claimed in claim 3, which is characterized in that the detection brushless direct-current
The jump situation of three road hall signals of motor judges in the hall signal of three road with the presence or absence of at least hall signal exists all the way
The step of not jumping in second preset duration include:
It enables three timers and progress timing is corresponded to three road hall signals of the brshless DC motor, in timing course,
If detecting, any road hall signal in the hall signal of three road is jumped, and controls the corresponding meter of road hall signal
When device start from scratch reclocking；
The timing duration for obtaining three timers respectively, judges whether the timing duration is greater than the second preset duration；
If in three timers there are the timing duration of at least one timer be greater than the second preset duration, determine described in
In the presence of at least hall signal does not jump in the second preset duration all the way in three road hall signals.
5. the control method of brshless DC motor according to any one of claims 1 to 4, which is characterized in that described in institute
It states during brshless DC motor rotated towards preset direction, detects the step whether brshless DC motor occurs stall
After rapid, further includes:
If detecting, stall does not occur for the brshless DC motor, controls the brshless DC motor cutting speed closed loop mode
It runs, under the speed closed loop mode, the revolving speed of the brshless DC motor is remained unchanged.
6. a kind of cooking machine, which is characterized in that the cooking machine includes brshless DC motor and master controller, wherein
The brshless DC motor is connect with stirring cutter, for driving the stirring cutter to rotate；
The master controller, for detecting the nothing during brshless DC motor is rotated towards preset direction
Whether brushless motor occurs stall；If detecting, stall occurs for the brshless DC motor, controls the brushless dc
Machine rotates predetermined angle towards the direction opposite with the preset direction；When the brshless DC motor court and the preset direction phase
After anti-direction rotation predetermined angle, controls the brshless DC motor and started turning towards the preset direction.
7. cooking machine as claimed in claim 6, which is characterized in that the master controller is also used in the brushless dc
When machine starts turning the first preset duration towards preset direction, the current rotating speed of the brshless DC motor is obtained；Work as described in judgement
Whether preceding revolving speed is greater than or equal to preset first revolving speed；If the current rotating speed be less than first revolving speed, determine described in
Stall occurs for brshless DC motor.
8. cooking machine as claimed in claim 7, which is characterized in that the master controller, if it is big to be also used to the current rotating speed
In or be equal to first revolving speed, then the jump situation of three road hall signals of the brshless DC motor is detected, described in judgement
With the presence or absence of at least hall signal does not jump in the second preset duration all the way in three road hall signals；If three tunnel is suddenly
In the presence of at least hall signal does not jump in the second preset duration all the way in your signal, then the brshless DC motor is determined
Stall occurs.
9. cooking machine as claimed in claim 8, which is characterized in that the master controller is also used to enable three timers pair
Three road hall signals of the brshless DC motor are corresponding to carry out timing, in timing course, if detecting three Lu Huoer
Any road hall signal in signal jumps, then controls the corresponding timer of road hall signal and start from scratch and count again
When；The timing duration for obtaining three timers respectively, judges whether the timing duration is greater than the second preset duration；If institute
State in three timers there are the timing duration of at least one timer be greater than the second preset duration, then determine three Lu Huoer
In the presence of at least hall signal does not jump in the second preset duration all the way in signal.
10. the cooking machine as described in any one of claim 6 to 9, which is characterized in that the master controller, if being also used to examine
It measures the brshless DC motor and stall does not occur, then control the brshless DC motor cutting speed closed loop mode operation, institute
It states under speed closed loop mode, the revolving speed of the brshless DC motor remains unchanged.
11. cooking machine as claimed in claim 10, which is characterized in that the cooking machine further includes busbar voltage current sample mould
Block, phase voltage current sampling module and inverter, wherein
The busbar voltage current sampling module, for acquiring the busbar voltage and bus current of the brshless DC motor；
The phase voltage current sampling module, for acquiring the phase voltage and phase current of the brshless DC motor；
The master controller is also used to obtain the busbar voltage when the brshless DC motor cutting speed closed loop mode
The collected busbar voltage of current sampling module and bus current and the phase voltage current sampling module are collected
The phase voltage and phase current；The brushless dc is calculated according to the busbar voltage, bus current, phase voltage and phase current
The current rotor position of machine exports corresponding alternating voltage electric current according to inverter described in the current rotor position control to drive
Move the brshless DC motor operation.
12. a kind of storage medium, which is characterized in that be stored with the control program of brshless DC motor, institute on the storage medium
State realized when the control program of brshless DC motor is executed by processor as described in any one of claims 1 to 5 it is brushless directly
The step of control method of galvanic electricity machine.
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| CN201811629127.4A CN109645856A (en) | 2018-12-27 | 2018-12-27 | Control method, cooking machine and the storage medium of brshless DC motor |
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| CN201811629127.4A CN109645856A (en) | 2018-12-27 | 2018-12-27 | Control method, cooking machine and the storage medium of brshless DC motor |
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| CN201811629127.4A Pending CN109645856A (en) | 2018-12-27 | 2018-12-27 | Control method, cooking machine and the storage medium of brshless DC motor |
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