CN114189179A - Automatic sorting barrel controller - Google Patents
Automatic sorting barrel controller Download PDFInfo
- Publication number
- CN114189179A CN114189179A CN202111554582.4A CN202111554582A CN114189179A CN 114189179 A CN114189179 A CN 114189179A CN 202111554582 A CN202111554582 A CN 202111554582A CN 114189179 A CN114189179 A CN 114189179A
- Authority
- CN
- China
- Prior art keywords
- triode
- circuit
- electrode
- control mcu
- motor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 230000003321 amplification Effects 0.000 claims abstract description 21
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 21
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004899 c-terminal region Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
- H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- 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
- H02P6/30—Arrangements for controlling the direction of rotation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
The invention relates to an automatic sorting cylinder controller, which comprises a master control MCU, a motor control circuit, a multi-path signal feedback circuit and a voltage sampling circuit, wherein the master control MCU is connected with the motor control circuit; the motor control circuit comprises a multi-path signal amplification circuit and a half-bridge circuit, wherein the signal amplification circuit comprises a plurality of cascaded triodes, and the triodes are connected with pins of the master control MCU and used for amplifying pin output levels; the PWM signal generated by the main control MCU is amplified through the signal amplification circuit and output to the half-bridge circuit to drive the motor; the rotating speed and the direction of the motor can be adjusted by adjusting the PWM signal; meanwhile, a signal feedback circuit and a voltage sampling circuit are arranged to perform feedback acquisition on the control signal, so that closed-loop control is realized; the control precision of the motor is improved, the motor is controlled by adopting an analog circuit, the cost is low, and the control precision is accurate; the running precision of the sorting roller can be improved.
Description
Technical Field
The invention relates to the technical field of motor control, in particular to an automatic sorting cylinder controller.
Background
A large amount of applications of drum-type sorting machine are in fields such as commodity circulation, generation, processing, and the principle of drum-type sorting equipment utilizes the motor to drive the cylinder, utilizes the pivoted cylinder to realize the letter sorting function. Therefore, accurate control of the motor is important for the sorting cylinder.
However, the existing motor controller generally adopts an integrated circuit, and the cost is high. But the control precision is lower by using a common analog circuit.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide an automatic sorting drum controller capable of precisely controlling the movement of a motor inside a drum-type sorter, thereby providing control accuracy of a sorting apparatus.
The automatic sorting cylinder controller comprises a main control MCU, a motor control circuit, a multi-path signal feedback circuit and a voltage sampling circuit;
the motor control circuit comprises a multi-path signal amplification circuit and a half-bridge circuit, wherein the signal amplification circuit comprises a plurality of cascaded triodes, and the triodes are connected with pins of the master control MCU and used for amplifying pin output levels; the output end of the signal amplification circuit is connected with a half-bridge circuit, and the half-bridge circuit is connected with a terminal of the motor;
the signal feedback circuit collects a voltage signal in the signal amplification circuit through the operational amplifier and outputs the voltage signal to the main control MCU;
the voltage sampling circuit collects the terminal voltage of the electrons and outputs the terminal voltage to the main control MCU.
Further, the intelligent control system also comprises an RS485 serial port module, the RS485 serial port comprises a 485 transceiver, and the 485 transceiver is connected with the master control MCU through a UART serial port.
Further, the signal amplification circuit comprises three sets of high-side output circuits and low-side output circuits;
the high-side output circuit comprises a first triode, a second triode and a third triode, wherein the first triode is an NPN triode, and the second triode and the third triode are PNP triodes; the base electrode of the first triode is connected with the resistor in series and then is connected with the pin of the master control MCU, the collector electrode of the first triode is connected with the base electrode of the second motor tube, and is connected with the external power supply after being connected with the resistor in series, and the emitter of the first triode is grounded; an emitting electrode of the second triode is connected with an external power supply, and a collector electrode of the second triode is connected with a diode and a resistor in series and then is used as a high-side output end to be connected with a grid electrode of one MOS (metal oxide semiconductor) tube of the half-bridge circuit; the base electrode of the third triode is connected with the collector electrode of the second triode, the emitter electrode of the third triode is connected with the high-side output end after being connected with the resistor in series, and the collector electrode of the third triode is connected with the midpoint of the half-bridge circuit; the emitter of the second triode is connected with the collector of the third triode through a polar capacitor;
the low-side output circuit comprises a fourth triode, a fifth triode and a sixth triode, wherein the fourth triode and the sixth triode are NPN triodes, and the fifth triode is a PNP triode; the base electrode of the fourth triode is externally connected with a power supply, the emitting electrode of the fourth triode is connected with the pin of the master control MCU after being connected with the resistor in series, and the collecting electrode of the fourth triode is connected with the base electrode of the fifth triode and the power supply; an emitter of the fifth triode is externally connected with a power supply, and a collector of the fifth triode is connected with a resistor in series and then is used as a low-side output end to be connected with a grid electrode of the other MOS tube of the half-bridge circuit; and the base electrode of the sixth triode is connected to the corresponding pin of the master control MCU, the collector electrode of the sixth triode is connected with the resistor in series and then is connected to the low-side output end, and the emitter electrode of the sixth triode is grounded.
Furthermore, the input end of an operational amplifier in the signal feedback circuit is connected with the midpoint of the half-bridge circuit, and the output end of the operational amplifier is connected with the main control MCU.
Furthermore, the input end of the voltage sampling circuit is connected with the end point of the half-bridge circuit, and the output end of the voltage sampling circuit is connected with the main control MCU.
The invention has the beneficial effects that: according to the automatic sorting cylinder controller, the PWM signals generated by the main control MCU are amplified through the signal amplification circuit and output to the half-bridge circuit to drive the motor; the rotating speed and the direction of the motor can be adjusted by adjusting the PWM signal; meanwhile, a signal feedback circuit and a voltage sampling circuit are arranged to perform feedback acquisition on the control signal, so that closed-loop control is realized; the control precision of the motor is improved, the motor is controlled by adopting an analog circuit, the cost is low, and the control precision is accurate; the running precision of the sorting roller can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for a person skilled in the art, other relevant drawings can be obtained from the drawings without inventive effort:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a circuit diagram of a master MCU of the present invention;
FIG. 3 is a circuit diagram of a control A signal amplifying circuit according to the present invention;
FIG. 4 is a circuit diagram of a signal amplifying circuit for controlling the B terminal according to the present invention;
FIG. 5 is a circuit diagram of a signal amplifying circuit for controlling the C terminal according to the present invention;
FIG. 6 is a circuit diagram of a half bridge circuit of the present invention;
FIG. 7 is a circuit diagram of a signal feedback circuit of the present invention;
FIG. 8 is a circuit diagram of a voltage sampling circuit of the present invention;
fig. 9 is a circuit diagram of the RS485 interface of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1-9: the automatic sorting cylinder controller comprises a main control MCU, a motor control circuit, a three-way signal feedback circuit and a voltage sampling circuit; the motor controlled in this embodiment is a dc brushless motor having three (A, B, C) motor terminals;
the motor control circuit comprises 3 groups of signal amplification circuits and 3 paths of half-bridge circuits, wherein each group comprises a high-side output circuit and a low-side output circuit so as to control the motor to rotate; each group of signal amplification circuits corresponds to one half-bridge circuit, and each half-bridge circuit corresponds to one motor terminal of the motor;
the signal amplification circuit comprises a plurality of cascaded triodes, and the triodes are connected with pins of the master control MCU and used for amplifying pin output levels; the output end of the signal amplification circuit is connected with a half-bridge circuit, and the half-bridge circuit is connected with a terminal of the motor; the three-bridge single circuit comprises two MOS tubes, namely an MOS tube QA5 and an MOS tube QA8, the source electrode of the MOS tube QA5 is connected with the drain electrode of the MOS tube QA8, the connection point is a midpoint, the midpoint is used as an output control signal, the half-bridge circuit principle is the prior art, and the description is omitted herein.
Specifically, the signal amplification circuit includes three sets of high-side output circuits and low-side output circuits;
take one group of the motors as an example for controlling the end A of the motor:
the high-side output circuit comprises a triode QA2, a triode QA1 and a triode QA3, the triode QA2 is an NPN triode, and the triode QA1 and the triode QA3 are PNP triodes; the base electrode of the triode QA2 is connected with the pin of the master control MCU after being connected with the resistor in series, the collector electrode of the triode QA2 is connected with the base electrode of the second motor tube, and is connected with the external power supply after being connected with the resistor in series, and the emitter of the triode QA2 is grounded; an emitting electrode of the triode QA1 is connected with an external power supply, and a collector electrode of the triode QA1 is connected with a diode and a resistor in series and then is used as a high-side output end H0_ A to be connected with a grid electrode of one MOS tube of the half-bridge circuit; the base electrode of the triode QA3 is connected with the collector electrode of the triode QA1, the emitter electrode of the triode QA3 is connected with the resistor in series and then is connected with the high-side output end H0_ A, and the collector electrode of the triode QA3 is connected with the midpoint A of the half-bridge circuit; the emitter of the triode QA1 is connected with the collector of the triode QA3 through a polar capacitor;
the principle is that a pin of the main control MCU outputs a PWM signal, when the PWM signal is at a high level, the triode QA2 is conducted, and a collector of the triode QA2 generates a current signal, so that a corresponding current signal is generated on a base of the triode QA1, the triode QA1 is conducted, a power supply signal flows to the collector from an emitter of the triode QA1, and a high-side output end outputs a level signal of a power supply to a grid of an MOS (metal oxide semiconductor) tube QA5 of a corresponding half-bridge circuit, so that the action of the motor is controlled; when the PWM signal is at a low level, the triode QA2 is not conducted, the triode QA1 is also not conducted, the +15V direct-current power supply can only flow into the polar capacitor for charging, and the electric energy flows to the triode QA1 until the next PWM signal is at a high level; meanwhile, the midpoint A of the corresponding half-bridge circuit is connected to the collector of the triode QA3, and when the midpoint voltage of the half-bridge circuit is negative, the triode QA3 channel introduces a power supply signal to the midpoint A of the half-bridge circuit for compensation.
The low-side output circuit comprises a triode QA7, a triode QA21 and a triode QA6, the triode QA7 and the triode QA6 are NPN triodes, and the triode QA21 is a PNP triode; the base electrode of the triode QA7 is externally connected with a power supply, the emitter electrode of the triode QA7 is connected with a resistor in series and then is connected with the pin of the master control MCU, and the collector electrode of the triode QA7 is connected with the base electrode of the triode QA21 and the power supply; an emitter of the triode QA21 is externally connected with a power supply, and a collector of the triode QA21 is connected in series with a resistor and then is used as a low-side output end LO _ A to be connected with the gate of the other MOS tube of the half-bridge circuit; the base electrode of the triode QA6 is connected to the corresponding pin of the master control MCU, the collector electrode of the triode QA6 is connected in series with a resistor and then connected to the low-side output end LO _ A, and the emitter electrode of the triode QA6 is grounded.
The principle is as follows: the transistor QA7 is always in a conducting state under the action of the +5V dc power supply. When the pin corresponding to the main control MCU is at a low potential, an electric signal flows from the collector electrode of the triode QA7 to the emitter electrode, so that the PNP triode QA21 is used for channel, and a +15V power supply signal is output from the low-side output end LO _ A to the grid electrode of the MOS transistor QA8 corresponding to the half-bridge circuit, and a signal is input to the A end of the motor, thereby controlling the operation of the motor; when the pin corresponding to the main control MCU is at a high potential, the triode QA7 and the triode QA21 are not conducted; transistor QA6 is turned on, pulling low side output LO _ a to zero.
The signal feedback circuit collects a voltage signal in the signal amplification circuit through the operational amplifier and outputs the voltage signal to the main control MCU; specifically, the input end of an operational amplifier in the signal feedback circuit is connected with the midpoint of the half-bridge circuit, and the output end of the operational amplifier is connected with the main control MCU. The signal feedback circuit collects the control signal and compensates and corrects the PWM signal by using the control signal to realize closed-loop control.
The voltage sampling circuit collects the terminal voltage of electrons and outputs the terminal voltage to the master control MCU, the input end of the voltage sampling circuit is connected with the end point of the half-bridge circuit, and the output end of the voltage sampling circuit is connected with the master control MCU. The voltage sampling circuit performs voltage division sampling, and similarly, the PWM signal is compensated and corrected by using a sampling voltage signal, so that closed-loop control is realized.
In the embodiment, the intelligent control system further comprises an RS485 serial port module, wherein the RS485 serial port comprises a 485 transceiver, and the 485 transceiver is connected with the master control MCU through a UART serial port; and the RS485 serial port is externally connected with control equipment.
In summary, the automatic sorting cylinder controller according to the present invention amplifies the PWM signal generated by the main control MCU through the signal amplification circuit, and outputs the PWM signal to the half-bridge circuit to drive the motor; the rotating speed and the direction of the motor can be adjusted by adjusting the PWM signal; meanwhile, a signal feedback circuit and a voltage sampling circuit are arranged to perform feedback acquisition on the control signal, so that closed-loop control is realized; the control precision of the motor is improved, the motor is controlled by adopting an analog circuit, the cost is low, and the control precision is accurate; the running precision of the sorting roller can be improved.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (5)
1. Automatic letter sorting section of thick bamboo controller, its characterized in that: the device comprises a master control MCU, a motor control circuit, a multi-channel signal feedback circuit and a voltage sampling circuit;
the motor control circuit comprises a multi-path signal amplification circuit and a half-bridge circuit, wherein the signal amplification circuit comprises a plurality of cascaded triodes, and the triodes are connected with pins of the master control MCU and used for amplifying pin output levels; the output end of the signal amplification circuit is connected with a half-bridge circuit, and the half-bridge circuit is connected with a terminal of the motor;
the signal feedback circuit collects a voltage signal in the signal amplification circuit through the operational amplifier and outputs the voltage signal to the main control MCU;
the voltage sampling circuit collects the terminal voltage of the electrons and outputs the terminal voltage to the main control MCU.
2. The automated sorting cartridge controller of claim 1, wherein: still include RS485 serial ports module, the RS485 serial ports includes the 485 transceiver, the 485 transceiver with master control MCU passes through UART serial ports connection.
3. The automated sorting cartridge controller of claim 1, wherein: the signal amplification circuit comprises three groups of high-side output circuits and low-side output circuits;
the high-side output circuit comprises a first triode, a second triode and a third triode, wherein the first triode is an NPN triode, and the second triode and the third triode are PNP triodes; the base electrode of the first triode is connected with the resistor in series and then is connected with the pin of the master control MCU, the collector electrode of the first triode is connected with the base electrode of the second motor tube, and is connected with the external power supply after being connected with the resistor in series, and the emitter of the first triode is grounded; an emitting electrode of the second triode is connected with an external power supply, and a collector electrode of the second triode is connected with a diode and a resistor in series and then is used as a high-side output end to be connected with a grid electrode of one MOS (metal oxide semiconductor) tube of the half-bridge circuit; the base electrode of the third triode is connected with the collector electrode of the second triode, the emitter electrode of the third triode is connected with the high-side output end after being connected with the resistor in series, and the collector electrode of the third triode is connected with the midpoint of the half-bridge circuit; the emitter of the second triode is connected with the collector of the third triode through a polar capacitor;
the low-side output circuit comprises a fourth triode, a fifth triode and a sixth triode, wherein the fourth triode and the sixth triode are NPN triodes, and the fifth triode is a PNP triode; the base electrode of the fourth triode is externally connected with a power supply, the emitting electrode of the fourth triode is connected with the pin of the master control MCU after being connected with the resistor in series, and the collecting electrode of the fourth triode is connected with the base electrode of the fifth triode and the power supply; an emitter of the fifth triode is externally connected with a power supply, and a collector of the fifth triode is connected with a resistor in series and then is used as a low-side output end to be connected with a grid electrode of the other MOS tube of the half-bridge circuit; and the base electrode of the sixth triode is connected to the corresponding pin of the master control MCU, the collector electrode of the sixth triode is connected with the resistor in series and then is connected to the low-side output end, and the emitter electrode of the sixth triode is grounded.
4. The automated sorting cartridge controller of claim 1, wherein: the input end of an operational amplifier in the signal feedback circuit is connected with the midpoint of the half-bridge circuit, and the output end of the operational amplifier is connected with the main control MCU.
5. The automated sorting cartridge controller of claim 1, wherein: the input end of the voltage sampling circuit is connected with the end point of the half-bridge circuit, and the output end of the voltage sampling circuit is connected with the main control MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111554582.4A CN114189179A (en) | 2021-12-17 | 2021-12-17 | Automatic sorting barrel controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111554582.4A CN114189179A (en) | 2021-12-17 | 2021-12-17 | Automatic sorting barrel controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114189179A true CN114189179A (en) | 2022-03-15 |
Family
ID=80544377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111554582.4A Pending CN114189179A (en) | 2021-12-17 | 2021-12-17 | Automatic sorting barrel controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114189179A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012345A (en) * | 2016-07-01 | 2016-10-12 | 温州市逸达科技有限公司 | Electric sewing machine controller |
| CN106817051A (en) * | 2015-11-30 | 2017-06-09 | 三星电子株式会社 | For driving equipment and control method without sensor BLDC motors |
| CN212220367U (en) * | 2019-10-11 | 2020-12-25 | 博世华域转向***有限公司 | Controller circuit of electric power steering system |
| CN212305190U (en) * | 2020-05-22 | 2021-01-05 | 深圳市欣川科技有限公司 | Compressor driver of parking air conditioner |
| CN215072219U (en) * | 2020-12-19 | 2021-12-07 | 嘉兴泛达思节能技术有限公司 | Control circuit for booster pump variable frequency drive controller |
-
2021
- 2021-12-17 CN CN202111554582.4A patent/CN114189179A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106817051A (en) * | 2015-11-30 | 2017-06-09 | 三星电子株式会社 | For driving equipment and control method without sensor BLDC motors |
| CN106012345A (en) * | 2016-07-01 | 2016-10-12 | 温州市逸达科技有限公司 | Electric sewing machine controller |
| CN212220367U (en) * | 2019-10-11 | 2020-12-25 | 博世华域转向***有限公司 | Controller circuit of electric power steering system |
| CN212305190U (en) * | 2020-05-22 | 2021-01-05 | 深圳市欣川科技有限公司 | Compressor driver of parking air conditioner |
| CN215072219U (en) * | 2020-12-19 | 2021-12-07 | 嘉兴泛达思节能技术有限公司 | Control circuit for booster pump variable frequency drive controller |
Non-Patent Citations (1)
| Title |
|---|
| 颜小刚: "无位置传感器BLDCM的FOC控制***设计与实现", 《中国优秀硕士学位论文全文数据库信息科技辑》, 15 July 2020 (2020-07-15), pages 39 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101191825B (en) | Direct-current power supply detection device | |
| US8248016B2 (en) | Fan circuit | |
| CN105515472A (en) | Motor drive current detection circuit and control system | |
| CN106124840A (en) | Current detection circuit | |
| CN102196621B (en) | LED dimming circuit | |
| CN100501433C (en) | High power semiconductor tube test method and device | |
| CN205336168U (en) | Motor drive current detection circuit and control system | |
| CN109683649B (en) | Constant current circuit | |
| CN213423793U (en) | Linear constant current source and laser | |
| CN114189179A (en) | Automatic sorting barrel controller | |
| CN218771776U (en) | Linear voltage reduction circuit and electronic equipment | |
| CN207868989U (en) | A kind of multi-parallel IGBT drive signal synchronous circuits | |
| CN116008769A (en) | Self-driven power semiconductor conduction voltage drop detection circuit | |
| CN115549662A (en) | Accelerate integrator circuit of start-up | |
| CN105048864A (en) | Novel error-amplification-type piezoelectric ceramic driving circuit | |
| CN108303666A (en) | A kind of functional test circuit of power semiconductor modular over-current detection circuit | |
| CN103138704B (en) | It is suitable for the voltage control variable resistor of big scale signal application | |
| CN209823466U (en) | Current balancing circuit | |
| CN113607969B (en) | Temperature and speed measuring circuit, device with circuit and method | |
| CN115201536B (en) | Three-terminal semiconductor device series connection extended voltage circuit and electronic load device | |
| CN219875469U (en) | Automobile high-side driving circuit with diagnosis and active protection functions | |
| CN112803736B (en) | Circuit and method for reducing output ripple of DC-DC converter | |
| CN114050746B (en) | Gain control system and method for single-phase sine wave DC brushless motor driving chip | |
| CN221261108U (en) | Control circuit for rapidly detecting current and detection circuit | |
| CN116207832B (en) | BOOST charging circuit, charging system and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |