KR101618688B1 - Geared bldc motor constant velocity driving control device for juicer - Google Patents

Geared bldc motor constant velocity driving control device for juicer Download PDF

Info

Publication number
KR101618688B1
KR101618688B1 KR1020150133551A KR20150133551A KR101618688B1 KR 101618688 B1 KR101618688 B1 KR 101618688B1 KR 1020150133551 A KR1020150133551 A KR 1020150133551A KR 20150133551 A KR20150133551 A KR 20150133551A KR 101618688 B1 KR101618688 B1 KR 101618688B1
Authority
KR
South Korea
Prior art keywords
bldc motor
control signal
rotation
pulse width
pwm
Prior art date
Application number
KR1020150133551A
Other languages
Korean (ko)
Inventor
이정문
Original Assignee
대영공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 대영공업 주식회사 filed Critical 대영공업 주식회사
Priority to KR1020150133551A priority Critical patent/KR101618688B1/en
Application granted granted Critical
Publication of KR101618688B1 publication Critical patent/KR101618688B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/06—Arrangements for speed regulation of a single motor wherein the motor speed is measured and compared with a given physical value so as to adjust the motor speed
    • 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
    • A47J19/00—Household machines for straining foodstuffs; Household implements for mashing or straining foodstuffs
    • A47J19/02—Citrus fruit squeezers; Other fruit juice extracting devices
    • 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
    • A47J19/00—Household machines for straining foodstuffs; Household implements for mashing or straining foodstuffs
    • A47J19/06—Juice presses for vegetables
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
    • H02P27/085—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching frequency
    • H02P29/0005—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators
    • H02P6/16—Circuit arrangements for detecting position

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Food Science & Technology (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

The present invention relates to a constant speed drive control device of a geared BLDC motor for a juicer. According to the present invention, the constant speed drive control device of a geared BLDC motor for a juicer comprises a BLDC motor (110) which rotates a rotary screw (P1) of the juicer by connecting a motor shaft to a reducer (Gb) of the juicer, a juice machine (juice extractor and juicer), a milling machine, and a milking machine (hereinafter collectively referred to as ″juicer″); a hall sensor (120) which outputs location information of a rotor (110b) as a signal; a PWM signal generator (140) which generates a PWM control signal for controlling the rotation of the BLDC motor (110) according to the location information of the rotor (110b) received from the hall sensor (120) and outputs the PWM control signal to an inverter unit (130); and the inverter unit (130) which turns on or off a switch according to the PWM control signal outputted from the PWM signal generator (140), converts DC power supplied from a power supply unit into three-phase AC power (U,V,W), and supplies the three-phase AC power to the BLDC motor (110). The constant speed drive control device of a geared BLDC motor for a juicer further comprises a constant speed control means to maintain a constant number of revolutions of the BLDC motor (110) even if a load value applied to the BLDC motor (110) changes. According to this, the constant number of revolutions of the BLDC is maintained even if the load changes.

Description

TECHNICAL FIELD [0001] The present invention relates to a constant speed drive control device for a geared BLDC motor,

More particularly, the present invention relates to a geared BLDC motor drive control device suitable for maintaining a constant number of revolutions of a geared BLDC (brushless direct current) motor even when a load is increased.

[Background Art] Generally, a green juice extractor or a juice extractor is provided in a main body such that a screw shaft driven by a motor is housed by a housing, and squeezed juice such as vegetables and fruits put on one side of the housing to obtain juice And grinders are for grinding beans, for example, to make tofu and the like. Recently, there have been introduced products in which a milling machine and a milking machine are added to a juice extractor or an extractor.

AC motors have generally been used as drive motors for such green juice extractors, juice extractors, milling machines and milking machines (hereinafter collectively referred to as "green juice extractors").

However, the AC motor used in the green juice has a disadvantage of high power consumption, so the BLDC motor is adopted to solve the drawback of power consumption of AC motor.

Such a BLDC motor for a green juice is widely used because it consumes less than 1/2 power consumption of an AC motor.

In the case of a BLDC motor, a geared BLDC motor equipped with a speed reducer for controlling the number of revolutions has recently been used.

FIG. 1 is a conceptual diagram of a green pot 100 provided with a speed reducer-driven BLDC motor 110 (Geared BLDC motor).

A speed reducer Gb is provided on the axis of the BLDC motor 110 as shown in FIG. 1, and a rotating screw P1 is provided on the output end of the speed reducer.

However, the conventional green juice provided with the geared BLDC motor has the following problems.

FIG. 2 is a graph showing motor characteristics of a general AC power supply and a BLDC motor.

FIG. 2 (a) shows a motor characteristic graph of an AC motor for an electric power plant, and FIG. 2 (b) shows a motor characteristic graph of a BLDC motor for an electric power plant.

As shown in FIG. 2 (a), in the conventional AC motor for the green juice, there is no significant change in the number of revolutions even if the torque increases in relation to the number of revolutions and torque.

For example, when the torque is zero, the number of revolutions is 1600 rpm. However, even if the torque rises to 360 kg * cm, the number of revolutions is 1400 rpm, so that the change in the number of revolutions is not large as the torque changes.

However, when the BLDC motor for a conventional green pot has a load applied to the BLDC motor, the number of rotations of the reducer-driven BLDC motor 110 (Geared BLDC motor) is drastically reduced.

That is, as shown in FIG. 2 (b), it can be seen that, in the conventional BLDC motor for green juice, the number of revolutions sharply decreases when the torque is slightly increased in relation to the number of revolutions and torque.

As described above, the conventional geared BLDC motor (driven by the reducer driving BLDC motor for the green juicer) has a problem in that the number of revolutions is not constant and varies depending on the load because the number of revolutions is rapidly reduced when the load is applied.

 If the number of revolutions is not constant, there is a problem that the juice, which is a function of the juice product, is not smooth.

Literature 1. Patent Registration No. 10-1278889 (Publication date: Jun. 26, 2013) Document 2. Patent Registration No. 10-1548910 (public announcement date: 2015.09.02)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a geared BLDC motor drive controller for a green juice extractor,

First, in the case where the drive motor of the green juice extractor, the juicer, the miller, and the milking machine is a BLDC motor and the BLDC motor is a geared BLDC motor that is a speed reducer drive system, The number of revolutions of the motor can be controlled to be constant,

Second, by making the number of revolutions of the geared BLDC motor constant regardless of the size of the load, it is possible to improve the operational reliability of the green juice extractor, the juicer, the miller and the milking machine,

Third, by synthesizing the signals output from the Hall sensors and detecting the number of revolutions using the frequency of the synthesized signal, it is possible to accurately and easily acquire the current operating speed of the geared BLDC motor,

Fourth, the constant speed can be maintained by comparing the current operation speed with the set speed and changing the pulse width of the PWM control signal based on the difference to correct the speed,

Fifth, the speed of the juice extractor, the juicer, the juicer, the millstone and the milking machine can be set to two or more stages, the constant speed can be maintained at each speed stage,

Sixth, the pulse width changing control signal for changing the pulse width of the PWM control signal is performed by the DC voltage signal so that the pulse width is changed by a simple configuration and operation so that the rotation number can be maintained constant. And to provide a geared BLDC motor drive control device.

In order to accomplish the above object, the present invention provides a geared BLDC motor drive control apparatus for a green juice, which comprises a rotor and a stator, and includes a green juice extractor, a juicer, a millstone and a milking machine (Hereinafter collectively referred to as "BLDC motor "), a hall sensor connected to the motor shaft for rotating the rotary screw of the rotary pot, a hall sensor provided in the rotor of the BLDC motor for outputting position information of the rotor as a signal, A PWM signal generator for generating a PWM control signal for controlling the rotation of the BLDC motor according to the position information of the rotor received from the inverter and outputting the PWM control signal to the inverter unit; (U, V, W) AC power supply and supplies the DC power to the BLDC motor, A constant speed drive control device for a geared BLDC motor, characterized by further comprising constant speed control means for maintaining a constant number of revolutions of the BLDC motor even if the load value acting on the BLDC motor changes.

The geared BLDC motor drive control device for a green juice according to the present invention is characterized in that the constant speed control means synthesizes a position information signal of a rotor received from the Hall sensor and generates a frequency signal of the synthesized position information signal, A current frequency of the BLDC motor is detected based on the frequency signal received from the frequency synthesizer, and the current rotation frequency is compared with the preset rotation frequency, And outputs a rotation speed correction control signal based on the difference when the difference value is out of the standard error range based on the determination result; A pulse width modifier for changing the pulse width of the PWM control signal output from the PWM signal generator according to the correction control signal, Comprising: a pulse width change control unit that outputs a signal, the PWM signal generating section is characterized by changing the pulse width be output a PWM control signal according to a pulse width changing control signal from changing the pulse width control.

In the geared BLDC motor drive control apparatus for an electric water purifier according to the present invention, the pulse width changing control section outputs a DC voltage as a pulse width changing control signal.

In the geared BLDC motor drive control apparatus for an electric water purifier according to the present invention, the DC voltage value, which is a pulse width change control signal output from the pulse width change control section, is proportional to the difference between the set rotation speed and the present rotation speed.

The geared BLDC motor drive control apparatus for an electric power plant according to the present invention includes: a rotation number setting unit for setting a rotation number of the BLDC motor; and a rotation number setting unit for storing the rotation number value input from the rotation number setting unit under the control of the rotation number correction control unit And a rotation number storage unit is further included.

The geared BLDC motor drive control device for a green juice according to the present invention is characterized in that the rotation speed correction control unit includes a current rotation speed detection module for detecting a current rotation speed of the BLDC motor based on a frequency signal received from the frequency composition unit, A rotation speed comparison judgment module for comparing the number of rotation and the preset rotation speed with each other and judging whether there is a difference between the set rotation speed and the current rotation speed and if the difference value is out of the standard error range, And a correction control signal generation module for outputting a rotation speed correction control signal based on the rotation speed.

The geared BLDC motor drive control apparatus for use in the green juice according to the present invention is characterized in that the rotational speed setting section is capable of setting a plurality of rotational speeds.

The constant speed drive control apparatus of the geared BLDC motor for the green juice according to the present invention having the above-described configuration has the following effects.

First, in the case where the drive motor of the green juice extractor, the juicer, the miller and the milking machine is a BLDC motor and the BLDC motor is a geared BLDC motor which is a speed reducer drive system, even if the torque There is an effect that the number of revolutions of the motor can be controlled to be constant.

Second, by making the number of revolutions of the geared BLDC motor constant regardless of the size of the load, it is possible to improve the operational reliability of the green juice extractor, the juicer, the miller, and the milking machine.

Third, by synthesizing the signal output from the hall sensor and detecting the current operation speed of the BLDC motor by using the frequency of the synthesized signal, it is possible to acquire the current operation speed of the geared BLDC motor accurately and easily .

Fourth, there is an effect that the constant speed can be maintained by comparing the current operation speed with the set speed, and correcting the number of revolutions by changing the pulse width of the PWM control signal based on the difference.

Therefore, the rotation speed of the motor can be maintained by implementing a relatively simple algorithm, thereby reducing the production cost of the product.

Fifth, the speed of the juice extractor, the juice extractor, the miller, and the milking machine can be set to two or more stages, and the constant speed can be maintained in all the speed steps.

Sixth, the pulse width changing control signal for changing the pulse width of the PWM control signal is performed by the DC voltage signal, so that the pulse width is changed by a simple configuration and operation, and the number of revolutions can be kept constant.

1 is a block diagram of a green pot equipped with a general geared BLDC motor.
Fig. 2 is a graph of motor characteristics of an AC motor and a BLDC motor for a general green pot.
FIG. 3 is a block diagram of a geared BLDC motor drive control device for a green juice extractor according to an embodiment of the present invention.
4 is a detailed block diagram of the rotation speed correction control unit 153 in FIG.
FIG. 5 is a graph of a motor characteristic when a BLDC motor is driven by using a geared BLDC motor drive control apparatus for an electric purifier according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a geared BLDC motor drive control apparatus for a green juice according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in the figure, the geared BLDC motor drive control apparatus for an electric purifier according to an embodiment of the present invention includes a BLDC motor 110, a hall sensor 120, a PWM signal generating unit 140, and an inverter unit 130 The constant speed drive control device of a geared BLDC motor for a green juice which is constituted by further comprising constant speed control means.

The BLDC motor 110 is provided with a rotor 110b made of a magnet and a stator 110a made of three-phase (U phase, V phase, W phase) windings, A motor shaft (not shown) is connected to the speed reducer Gb of the machine and the milking machine (hereinafter collectively referred to as "the green juicer") to rotate the rotating screw P1 of the juice extractor through the speed reducer Gb.

The hall sensor 120 is provided at a predetermined interval in the rotor 110b of the BLDC motor 110, for example, and is configured to output position information of the rotor 110b as a signal.

The PWM signal generator 140 generates a PWM control signal for controlling the rotation of the BLDC motor 110 according to the positional information of the rotor 110b received from the three hall sensors 120, 130).

The inverter unit 130 includes a plurality of switching elements (for example, FETs and IGBTs), switches on and off according to a PWM control signal output from the PWM signal generator 140, (U, V, W) AC power source to supply the DC power to the BLDC motor 110.

The constant speed control means is configured so that the BLDC motor 110 maintains a constant number of revolutions even if the load value acting on the BLDC motor 110 changes.

In the geared BLDC motor drive control apparatus for an electric power plant according to an embodiment of the present invention, the constant speed control means includes a frequency synthesizing unit 151, a rotation speed correction control unit 153, and a pulse width change control unit 155 .

The frequency synthesizer 151 synthesizes the position information signal of the rotor 110b received from the hall sensor 120, generates the synthesized position information signal as a frequency signal, and outputs the generated frequency signal.

The rotation speed correction control unit 153 detects the current rotation speed of the BLDC motor 110 based on the frequency signal received from the frequency synthesis unit 151 and compares the current rotation speed with the preset rotation speed, And determines whether there is a difference between the set rotation speed and the current rotation speed. If the difference is out of the standard error range, the rotation speed correction control signal based on the difference is output.

The pulse width change control unit 155 controls the pulse width of the PWM control signal to change the pulse width of the PWM control signal output from the PWM signal generation unit 140 according to the rotation speed correction control signal received from the rotation speed correction control unit 153 And outputs a signal.

In this case, the PWM signal generator 140 changes the pulse width according to the pulse width change control signal received from the pulse width change controller 155, and outputs the PWM control signal.

According to such a configuration, even if the load value (torque value) of the BLDC motor changes, the number of revolutions can be kept constant.

In the geared BLDC motor drive control apparatus for an electric power plant according to an embodiment of the present invention, the pulse width change control unit 155 outputs a DC voltage as a pulse width change control signal.

For example, a DC voltage of 1.0 to 5.0 V is output. The larger the value of the voltage is, the larger the On Duty ratio becomes. Thus, the number of revolutions can be increased.

In the geared BLDC motor drive control apparatus for an electric power plant according to an embodiment of the present invention, the DC voltage value, which is the pulse width change control signal output from the pulse width change control section, is proportional to the difference between the set rotation speed and the present rotation speed .

In the geared BLDC motor drive control apparatus for an electric power plant according to an embodiment of the present invention, the rotation speed setting section 161 for setting the rotation speed of the BLDC motor 110, the control of the rotation speed correction control section 153 And a rotation number storage unit 163 for storing the rotation number input from the rotation number setting unit 161 by the rotation number setting unit 161. [

In the geared BLDC motor drive control apparatus for an electric power plant according to an embodiment of the present invention, the rotation number setting section 161 can set a plurality of rotation numbers, .

The number-of-rotations setting unit 161 is provided with a number-of-rotations input button for setting the number of rotations, for example, and the number-of-rotations input button may be composed of three input buttons for inputting three types of rotations For example, the first stage (760 rpm), the second stage (1520 rpm), and the third stage (2280 rpm).

The present invention can maintain a constant speed according to the set number of revolutions even when a plurality of revolutions are input as described above.

In the geared BLDC motor drive control apparatus for an electric power plant according to an embodiment of the present invention, the rotation speed correction control unit 153 includes a rotation speed detection module 210, a rotation speed comparison determination module 220, And a signal generation module (230).

The rotation speed detection module 210 detects the current rotation speed of the BLDC motor 110 based on the frequency signal received from the frequency synthesizer 151. [

The rotation number comparison determination module 220 compares the current rotation number with the preset rotation number and determines whether the set rotation number differs from the current rotation number.

When the difference value is out of the standard error range, the correction control signal generation module 230 outputs a rotation speed correction control signal based on the difference value.

Hereinafter, the operation of the geared BLDC motor drive control apparatus for an electric power plant according to one embodiment of the present invention will be described.

For example, when the user inputs the first rotation speed setting value (e.g., 760 rpm), the rotation speed correction control section 153 stores the rotation speed storage section 163 in the rotation speed storage section 163.

When the BLDC motor 110 is operated, the hall sensor 120 outputs the position information of the rotor to the frequency synthesizer 151 as a signal.

The frequency synthesizer 151 synthesizes the position information signal of the rotor 110b received from the hall sensor 120, generates the synthesized position information signal as a frequency signal, (153).

The rotation number detection module 210 of the rotation number correction control unit 153 calculates and detects the current rotation number of the BLDC motor 110 based on the frequency signal received from the frequency composition unit 151. [

The rotation number comparison determination module 220 determines whether the current rotation number (for example, 450, rpm) detected by the rotation number detection module 210 and the preset rotation number (760 rpm of the example) already stored in the rotation number storage unit 163, And determines whether there is a difference between the set rotation speed and the current rotation speed.

When the difference value [760 - 450 = 210 rpm] is out of the standard error range (for example, 10 rpm), the correction control signal generation module 230 outputs a rotation speed correction control signal based on the difference value do.

The pulse width changing controller 155 sets the pulse width of the PWM control signal outputted from the PWM signal generator 140 according to the rotation speed correction control signal received from the correction control signal generating module 230 of the rotation speed correction controller 153 And outputs a pulse width change control signal for changing the width (to actually increase the pulse width so that a large current flows).

The value of the pulse width changing control signal may be, for example, a DC voltage value of 1.0 to 5.0 V. Since the larger the difference between the set rotation speed and the measured rotation speed is, the larger the value of the number of rotations to be corrected is, And outputs 2.0 V, for example.

The PWM signal generating unit 140 changes the pulse width according to the pulse width change control signal (2.0 V in the example) received from the pulse width change control unit 155 And outputs it to the inverter unit 130.

The inverter unit 130 supplies the current by increasing the switching on time so that the current flows more, and the BLDC motor 110 is increased in the number of revolutions to reach the set value.

Therefore, even if the load value (torque value) of the BLDC motor is changed by this operation process, the rotation number is kept constant.

As shown in FIG. 5, when the set rotational speeds set by the rotational speed setting unit 161 are 760 rpm, 1520 rpm, and 2280 rpm, respectively, even if the load value changes according to the torque value, .

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is self-evident to those who have.

Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

110: BLDC motor 110a: stator
110b: Rotor 120: Hall sensor
130: inverter section 140: PWM signal generating section
151: Frequency synthesizer 153: Frequency synthesizer 153:
155: Pulse width change control section 161:
163: rotation number storage unit 210: rotation number detection module
220: rotation number comparison judgment module 230: correction control signal generation module

Claims (4)

A rotor 110b and a stator 110a are provided and a motor shaft is connected to a speed reducer Gb of a green juice machine, a raw juice machine, a mill stone machine and a milking machine (hereinafter collectively referred to as " A BLDC motor 110 connected to rotate the rotary screw P1 of the green juice,
A Hall sensor 120 provided in the rotor 110b of the BLDC motor 110 to output position information of the rotor 110b as a signal,
A PWM signal generating unit for generating a PWM control signal for controlling the rotation of the BLDC motor 110 and outputting the PWM control signal to the inverter unit 130 according to the position information of the rotor 110b received from the Hall sensor 120 140,
(U, V, W) alternating current power supplied from the power supply unit to the BLDC motor 110 by switching on / off according to the PWM control signal output from the PWM signal generator 140 The drive control device for a geared BLDC motor for an electric power plant including an inverter unit (130)
Further comprising constant speed control means for allowing the BLDC motor (110) to maintain a constant number of revolutions even when a load value acting on the BLDC motor (110) changes,
The constant-
A frequency synthesizer 151 for synthesizing a position information signal of the rotor 110b received from the Hall sensor 120, generating a frequency signal of the synthesized position information signal and outputting the generated frequency signal,
Detects the current number of revolutions of the BLDC motor 110 based on the frequency signal received from the frequency synthesizer 151 and compares the current number of revolutions with the preset number of revolutions, A rotation speed correction control unit 153 for outputting a rotation speed correction control signal based on the difference value when the difference value is out of the standard error range,
A pulse width changing control section for outputting a pulse width changing control signal for changing the pulse width of the PWM control signal outputted from the PWM signal generating section 140 in accordance with the rotation speed correction control signal received from the rotation speed correction control section 153, (155)
The PWM signal generator 140 changes the pulse width according to the pulse width change control signal received from the pulse width change controller 155 and outputs a PWM control signal,
The pulse width changing controller 155 outputs a DC voltage as a pulse width changing control signal,
The DC voltage value, which is the pulse width changing control signal output from the pulse width changing controller 155, is proportional to the difference between the set rotational speed and the present rotational speed,
A rotation number setting unit 161 for setting the rotation number of the BLDC motor 110,
And a rotation number storage unit 163 for storing the rotation number input from the rotation number setting unit 161,
The rotation speed setting unit 161 can set a plurality of rotation speeds,
The rotation-speed correction control unit 153,
A current rotational speed detection module 210 for detecting the current rotational speed of the BLDC motor 110 based on the frequency signal received from the frequency synthesizer 151,
A rotation number comparison determination module 220 for comparing the current rotation number with the preset rotation number to determine whether there is a difference between the set rotation number and the current rotation number,
And a correction control signal generation module (230) for outputting a rotation speed correction control signal based on the difference when the difference value deviates from a standard error range by the determination. Speed drive control device.
delete delete delete
KR1020150133551A 2015-09-22 2015-09-22 Geared bldc motor constant velocity driving control device for juicer KR101618688B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150133551A KR101618688B1 (en) 2015-09-22 2015-09-22 Geared bldc motor constant velocity driving control device for juicer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150133551A KR101618688B1 (en) 2015-09-22 2015-09-22 Geared bldc motor constant velocity driving control device for juicer

Publications (1)

Publication Number Publication Date
KR101618688B1 true KR101618688B1 (en) 2016-05-09

Family

ID=56020566

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150133551A KR101618688B1 (en) 2015-09-22 2015-09-22 Geared bldc motor constant velocity driving control device for juicer

Country Status (1)

Country Link
KR (1) KR101618688B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113349622A (en) * 2020-03-05 2021-09-07 株式会社安捷利 Juicer and juicing method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008035638A (en) * 2006-07-28 2008-02-14 Aloka Co Ltd Brushless motor controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008035638A (en) * 2006-07-28 2008-02-14 Aloka Co Ltd Brushless motor controller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113349622A (en) * 2020-03-05 2021-09-07 株式会社安捷利 Juicer and juicing method thereof
KR20210113471A (en) * 2020-03-05 2021-09-16 주식회사 엔젤 A jucier and jucier method thereof
KR102356099B1 (en) * 2020-03-05 2022-01-28 주식회사 엔젤 A jucier and jucier method thereof
CN113349622B (en) * 2020-03-05 2022-07-22 株式会社安捷利 Juicer and juicing method thereof

Similar Documents

Publication Publication Date Title
US9998059B2 (en) Motor driving apparatus
KR100752548B1 (en) Hybrid motor and controlling apparatus and method controlling thereof
EP3247036B1 (en) Sensorless control of ac induction motor method and apparatus
US20080252239A1 (en) Method capable of controlling brushless dc motor
JP6029708B2 (en) PWM inverter driven permanent magnet type synchronous motor and control method for ventilation fan
CN101232266A (en) Apparatus and method for controlling direct current brushless motor
JP4213946B2 (en) Electric wheeling device
US6534946B2 (en) Synchronous AC motor
JP2015211593A (en) Rotational position detection device, and brushless dc motor sinusoidal wave drive controller employing the rotational position detection device
CN101268610A (en) Method for supplying electrical power to a DC motor which can be commutated electronically via a semiconductor power output stage
KR101597990B1 (en) A overload elimination circuit of geared bldc motor for juicer and elimination method thereof
US20110043147A1 (en) Motor control apparatus
KR101618688B1 (en) Geared bldc motor constant velocity driving control device for juicer
JP2006345686A (en) Method to operate electric rotating machine, and equipment to implement its method
KR20140057336A (en) Method for controlling an electronically commutated polyphase dc motor
JP2012090464A (en) Inverter control device and electric compressor and electrical equipment
US8981703B2 (en) Motor system having an electronically commutated electric machine
CN108661922A (en) centrifugal water pump and its driving method
JP2008125264A (en) Control method and controller of brushless dc motor
CN112421807B (en) Food processing device, control method and system of rotor assembly and storage medium
JP6802282B2 (en) A control device and control method for a rotary machine, and a rotary machine unit equipped with the control device.
CN109150025A (en) A kind of electric bicycle brushless direct current motor control circuit and method
KR100492616B1 (en) Device of pulse translation for frequency generator of bldc motor
JPH0584000A (en) Motor driver
JP2005245075A (en) Device for detecting lock state of brushless dc motor

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20190401

Year of fee payment: 4