CN213817631U - Two three-phase motor control system that line control turned to - Google Patents
Two three-phase motor control system that line control turned to Download PDFInfo
- Publication number
- CN213817631U CN213817631U CN202022891428.3U CN202022891428U CN213817631U CN 213817631 U CN213817631 U CN 213817631U CN 202022891428 U CN202022891428 U CN 202022891428U CN 213817631 U CN213817631 U CN 213817631U
- Authority
- CN
- China
- Prior art keywords
- motor control
- phase
- control system
- phase motor
- interface
- 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.)
- Active
Links
- 238000005070 sampling Methods 0.000 claims abstract description 9
- 230000009977 dual effect Effects 0.000 claims description 15
- 238000002955 isolation Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 238000013461 design Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Landscapes
- Power Steering Mechanism (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses a two three-phase motor control system that line control turned to, include: two sets of three-phase motor control systems integrated on one PCB board; each set of the three-phase motor control system comprises: GPIO interface, CAN interface, SPI interface, MCU, angle decoding module, ADC module, power isolator, three-phase inverter, phase line isolator, operational amplifier converting circuit, JTAG connector and low side sampling resistor. The utility model discloses a carry out rationalization design to the system, be integrated as an organic whole with two sets of three-phase motor control systems, make the redundancy and the security of system all obtain great improvement to guaranteed that two three-phase PMSM can continue to operate through appropriate fault-tolerant method under the fault conditions such as the emergence switch tube opens circuit or motor phase line opens circuit, had fine stability.
Description
Technical Field
The utility model relates to a car steer-by-wire system technical field, more specifically say, relate to a two three-phase motor control system that steer-by-wire.
Background
Steer-by-wire is the focus of research on sustainable development of current automotive technology and automotive industry due to its advantages of high safety, improved driving characteristics, and enhanced maneuverability. A steer-by-wire motor driving system consisting of a double three-phase permanent magnet synchronous motor and a motor controller is an important component of steer-by-wire, and directly determines the safety, the controllability and the comfort of an automobile.
Research shows that the three-phase motor is difficult to continue to operate through fault-tolerant control after the phase failure occurs. At present, in order to ensure fault-tolerant operation of a steer-by-wire motor driving system, a traditional method is to perform redundancy backup by backing up a plurality of sets of motor controllers or by adopting a plurality of steer motors, and generally, the plurality of motor controllers or the steer motors are mutually independent.
Such a steer-by-wire system has a high total volume and a high total mass under the same power condition, and also has a high manufacturing cost and a high installation cost, which are not favorable for the high power density and the energy saving requirements of the steer-by-wire system.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a two three-phase motor control system that steer by wire can be applied to car steer by wire system, can effectively reduce car steer by wire motor drive system volume, quality and manufacturing cost to promote steer by wire motor drive system's hardware redundancy, security and integration.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a steer-by-wire dual three-phase motor control system comprising: two sets of three-phase motor control systems integrated on one PCB board;
each set of the three-phase motor control system comprises: the device comprises a GPIO (general purpose input/output) interface (1), a CAN (controller area network) interface (2), an SPI (serial peripheral interface) interface (3), an MCU (microprogrammed control unit), an angle decoding module (5), an ADC (analog-to-digital converter) module (6), a power supply (7), a power supply isolating switch (8), a three-phase inverter (9), a phase line isolating switch (10), an operational amplifier converting circuit (12), a JTAG connector and a low-side sampling resistor (13).
Preferably, the first MCU (4) and the second MCU (14) perform data interaction and time sequence synchronization through the GPIO interface (1), the CAN interface (2) and the SPI interface (3).
Preferably, each set of the three-phase motor control system further includes: three low-side sampling resistors (13).
Preferably, the dual three-phase motor control system further includes: and the mechanical angle signal of the motor is output in a two-channel redundancy mode and is respectively sent to the first MCU (4) and the second MCU (14) so as to read the motor angle in a redundancy mode.
Preferably, the dual three-phase motor control system further includes: further comprising: and the voltage conversion chip (17) is connected with the power isolation switch (8), and the motor driving module (16) is connected with the power isolation switch.
Preferably, the dual three-phase motor control system further includes: and a voltage follower (19) and a breakdown protection chip (18) are connected between the MCU and the angle decoding module (5).
Preferably, the dual three-phase motor control system further includes: and the motor drive output interface (20) is connected with the phase line isolating switch (10).
Preferably, the dual three-phase motor control system further includes: a CAN transceiver (15) connected with the MCU and the CAN interface (2)
In conclusion, the steer-by-wire double three-phase motor control system has the functions of phase current redundancy check, motor angle signal redundancy acquisition and MCU redundancy communication, and can effectively improve the redundancy and the safety of the motor control system.
The utility model discloses a carry out rationalization design to the two three-phase motor control system that the line control turned to, be integrated as an organic whole with two sets of three-phase motor control system, make the redundancy and the security of system all obtain great improvement to guaranteed that two three-phase PMSM can continue to operate through appropriate fault-tolerant method under the fault circumstances such as the emergence switch tube opens circuit or the motor phase line opens circuit, had fine stability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block diagram of a steer-by-wire dual three-phase motor control system;
FIG. 2 is a schematic diagram of a dual MCU redundant communication scheme;
fig. 3 is a block diagram of a three-phase motor control system.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the following will combine the drawings in the embodiment of the present invention to clearly and completely describe the technical solution in the embodiment of the present invention, and obviously, the described embodiment is only a part of embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A steer-by-wire dual three-phase motor control system, as shown in fig. 1, comprising: two sets of three-phase motor control systems integrated on one PCB board;
each set of the three-phase motor control system comprises: the device comprises a GPIO (general purpose input/output) interface (1), a CAN (controller area network) interface (2), an SPI (serial peripheral interface) interface (3), an MCU (microprogrammed control unit), an angle decoding module (5), an ADC (analog-to-digital converter) module (6), a power supply (7), a power supply isolating switch (8), a three-phase inverter (9), a phase line isolating switch (10), an operational amplifier converting circuit (12), a JTAG connector and a low-side sampling resistor (13).
The two sets of three-phase motor control systems are integrated on one PCB board, and can control double three-phase motors, or control a single three-phase motor, and also can respectively control two three-phase motors.
The double three-phase motor control system adopts two groups of three-phase bridge inverter circuits to convert the output direct current electric energy of direct current power supplies on the automobile, such as a fuel cell, a generator, a storage battery pack or a super capacitor pack, into the alternating current electric energy required by the double three-phase permanent magnet synchronous motor. The motor control system consists of a power main circuit, a capacitor module and a control panel. Each phase bridge arm of the inverter is composed of power Mosfet power electronic power devices. The capacitor module is formed by connecting a plurality of chip capacitors in parallel. The control panel mainly comprises a Microprocessor (MCU) and an auxiliary circuit thereof, and is a power electronic device driving signal of the main circuit according to the steer-by-wire requirement.
Furthermore, the MCUs of the two sets of motor control systems can directly communicate with each other. As shown in fig. 2, the first MCU (4) and the second MCU (14) perform data interaction and timing synchronization through the GPIO interface (1), the CAN interface (2), and the SPI interface (3).
The GPIO interface can perform pull-down and pull-up operations, has the fastest response speed and is used for synchronizing the driving pulse time sequences of the two MCUs; when the pulse sequence is driven synchronously, one MCU changes the level state of the general purpose GPIO interface, and the other MCU reads the level state change of the general purpose GPIO interface and changes the level state of the other general purpose GPIO interface to inform the other MCU of the current program execution state. The SPI bus has full duplex communication characteristics, and MCU1 carries out data interaction through the SPI interface with MCU2, and interactive data mainly are motor control variable, if: phase current, electrical angle, motor speed, dq-axis current, and the like. The CAN bus is used for communication backup, and when the SPI breaks down, a CAN communication mode is started to maintain the normal operation of the data interaction function of the MCU.
Further, redundant backup of motor control signals is realized. Each set of the three-phase motor control system further comprises: three low-side sampling resistors (13). Three low-side sampling resistors are arranged in each lower tube of a three-phase inverter bridge arm, and two phase current acquisition modes are provided: the first method is to collect the current values of 2 low-side resistors, calculate the other phase current by using a three-phase current symmetry relation, and perform redundancy check on the current of the other phase low-side resistor; the second method is to collect the current values of 3 low-side resistors. The double three-phase motor controller is provided with motor angle signal input ports of two channels, wherein one channel is used as a redundancy backup.
Preferably, the embodiment of the present invention provides a control system, further comprising: and the mechanical angle signal of the motor is output in a two-channel redundancy mode and is respectively sent to the first MCU (4) and the second MCU (14) so as to read the motor angle in a redundancy mode.
The embodiment of the utility model provides a two three-phase motor control system of steer-by-wire still includes: and the voltage conversion chip (17) is connected with the power isolation switch (8), and the motor driving module (16) is connected with the power isolation switch.
The power supply isolating switch (8) and the phase line isolating switch (10) can prevent the following fault types from damaging the motor controller: the supply voltage is too low or too high; the motor phase line is short-circuited or broken. After the fault type occurs, the MCU turns off the corresponding isolating switch so as to reduce the influence of the fault on the motor controller.
In order to realize electric isolation after a fault, an electric isolating switch adopting Mosfet is arranged at the connecting part of a phase current line and a power line of the motor control system, and the MCU controls the isolating switch through the GPIO interface. When the power supply voltage is too large or too small or the phase line is broken and short-circuited, the isolating switch is disconnected to realize fault electrical isolation.
In order to realize fault-tolerant control of the double three-phase motor after a fault, when a switch tube of a motor controller or a phase line of the motor has an open circuit fault, the electric isolating switch corresponding to the fault phase is disconnected, and the residual phase is utilized to ensure that the double three-phase motor continues to operate by adopting a proper fault-tolerant method.
The utility model provides a two three-phase motor control system that steer-by-wire still includes:
and a voltage follower (19) and a breakdown protection chip (18) are connected between the MCU and the angle decoding module (5).
The utility model provides a two three-phase motor control system that steer-by-wire still includes: and the motor drive output interface (20) is connected with the phase line isolating switch (10).
The utility model provides a two three-phase motor control system that steer-by-wire still includes: and the CAN transceiver (15) is connected with the MCU and the CAN interface (2).
Fig. 3 specifically shows a structural block diagram of a three-phase motor control system, wherein a power input interface (7) is connected with an external power supply to provide electric energy for a controller, and the input voltage range is 12-24V; the voltage conversion chip (17) has the characteristics of multi-channel multi-voltage grade output, the MCU CAN steplessly adjust the output voltage of a specific pin of the power chip in an SPI communication mode, the 5V output voltage is provided for the operational amplifier conversion circuit (12), the CAN transceiver (15), the motor driving module (16), the motor angle sensor, the ADC module and the like, and the 3.3V output voltage is provided for the motor driving chip and the microprocessor; the microprocessor is mainly applied to motor control; the motor driving chip has a safety monitoring function, and the microprocessor can acquire the working state and the fault state of the current driving chip in an SPI communication mode; each lower bridge arm of the inverter is provided with a low-side sampling resistor (13) with the resistance value of 5m omega; the inverter is connected with a phase line isolating switch (10), and the phase line isolating switch is controlled by a motor driving chip to keep a normally closed state; the power supply voltage of the operational amplifier chip is 5V; in order to prevent voltage pulse spikes caused by electromagnetic interference, a breakdown protection chip (18) is arranged at the signal input end of the angle sensor.
The utility model discloses a turn to two three-phase motor control systems to the line control and carry out rationalization design, be integrated as an organic whole with two sets of three-phase motor control systems, make the redundancy and the security of system all obtain great improvement to guaranteed that two three-phase PMSM can continue to operate through appropriate fault-tolerant method under the fault circumstances such as the switch tube opens circuit or the motor phase line opens circuit taking place, had fine stability.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
In this document, 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. The utility model provides a two three-phase motor control system that line accuse turned to which a drive-by-wire, includes: two sets of three-phase motor control systems integrated on one PCB board;
each set of the three-phase motor control system comprises: the device comprises a GPIO (general purpose input/output) interface (1), a CAN (controller area network) interface (2), an SPI (serial peripheral interface) interface (3), an MCU (microprogrammed control unit), an angle decoding module (5), an ADC (analog-to-digital converter) module (6), a power supply (7), a power supply isolating switch (8), a three-phase inverter (9), a phase line isolating switch (10), an operational amplifier converting circuit (12), a JTAG connector and a low-side sampling resistor (13).
2. The double three-phase motor control system according to claim 1, characterized in that the first MCU (4) and the second MCU (14) perform data interaction and timing synchronization through the GPIO interface (1), the CAN interface (2) and the SPI interface (3).
3. The dual three-phase motor control system of claim 1, wherein each set of the three-phase motor control system further comprises: three low-side sampling resistors (13).
4. The dual three-phase motor control system of claim 1, further comprising: and the mechanical angle signal of the motor is output in a two-channel redundancy mode and is respectively sent to the first MCU (4) and the second MCU (14) so as to read the motor angle in a redundancy mode.
5. The dual three-phase motor control system of claim 1, further comprising: and the voltage conversion chip (17) is connected with the power isolation switch (8), and the motor driving module (16) is connected with the power isolation switch.
6. The dual three-phase motor control system of claim 1, further comprising:
and a voltage follower (19) and a breakdown protection chip (18) are connected between the MCU and the angle decoding module (5).
7. The dual three-phase motor control system of claim 1, further comprising:
and the motor drive output interface (20) is connected with the phase line isolating switch (10).
8. The dual three-phase motor control system of claim 1, further comprising: and the CAN transceiver (15) is connected with the MCU and the CAN interface (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022891428.3U CN213817631U (en) | 2020-12-02 | 2020-12-02 | Two three-phase motor control system that line control turned to |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022891428.3U CN213817631U (en) | 2020-12-02 | 2020-12-02 | Two three-phase motor control system that line control turned to |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213817631U true CN213817631U (en) | 2021-07-27 |
Family
ID=76943861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022891428.3U Active CN213817631U (en) | 2020-12-02 | 2020-12-02 | Two three-phase motor control system that line control turned to |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213817631U (en) |
-
2020
- 2020-12-02 CN CN202022891428.3U patent/CN213817631U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2226220B1 (en) | Redundant communication system | |
| CN110936821B (en) | Automobile motor controller, control system and automobile | |
| CN111634326A (en) | Redundant steer-by-wire device, system architecture and driving equipment | |
| WO2022213674A1 (en) | Dual-motor control system and method | |
| CN117885805B (en) | Redundant electric power steering control system and control method for automatic driving vehicle | |
| CN110920392B (en) | Power supply control circuit, power supply control method and new energy automobile | |
| CN213817631U (en) | Two three-phase motor control system that line control turned to | |
| CN109951256A (en) | On-board high-voltage power supply integrating device and its communication means and the new-energy automobile high voltage power supply for applying it | |
| CN201293813Y (en) | Apparatus for testing electromagnetical jamming immunity | |
| CN100479295C (en) | Synchronized switching controller and its control for parallel uninterrupted power supply | |
| CN114620117A (en) | Electronic controller for electric power steering control system and working method thereof | |
| KR20210101857A (en) | Steering assist apparatus and method and, steering system | |
| CN201721346U (en) | Dual-system integrated electric automobile controller | |
| CN108539835B (en) | AC-DC battery charging device | |
| CN214420543U (en) | Controller circuit of highly redundant electric power steering system | |
| CN207853788U (en) | Dual power supply electrohydraulic steering assist motor driver | |
| CN114644036B (en) | Controller circuit and control method of highly redundant electric power steering system | |
| CN216596236U (en) | IIC bus switching circuit and vehicle | |
| CN218198473U (en) | Electric power steering control circuit and vehicle | |
| CN217037078U (en) | Double-shaft motor emergency stop circuit, double-shaft motor driver and double-shaft motor driving system | |
| CN209972184U (en) | Electric drive safety control circuit under electric motor car communication trouble | |
| CN115009023B (en) | Vehicle-mounted power supply, power supply and control system thereof and power supply and control method thereof | |
| CN218172387U (en) | Electric power steering control circuit and vehicle | |
| CN203093746U (en) | Anti-crash one-click starting system | |
| CN219960110U (en) | Switching device and system of vehicle-mounted inverter power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |