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CN-224233573-U - Brushless motor driver circuit system based on airborne environment

CN224233573UCN 224233573 UCN224233573 UCN 224233573UCN-224233573-U

Abstract

The application discloses a brushless motor driver circuit system based on an airborne environment, which comprises a main control circuit, a driving circuit, a power circuit, an analog signal acquisition circuit and a multi-source control circuit, wherein one end of the analog signal acquisition circuit is connected with the power circuit, the other end of the analog signal acquisition circuit is connected with the main control circuit, the output end of the main control circuit is connected with the driving circuit, the output end of the driving circuit is connected with the power circuit, the power circuit is connected with a brushless motor, the multi-source control circuit is used for supplying power, one end of the multi-source control circuit is connected with the main control circuit, and the multi-source control circuit sends a power control signal to the main control circuit to enable the main control circuit to conduct power mode selection so as to control forward rotation, reverse rotation and emergency reaction of the brushless motor. According to the scheme, corresponding 28V voltages are supplied to the forward rotation, reverse rotation and emergency power signal terminals, so that corresponding motor functions can be realized.

Inventors

  • Zhai Mengchao
  • LIU TIANYU
  • ZHANG JING
  • MA YUWEI

Assignees

  • 陕西省电子技术研究所有限公司

Dates

Publication Date
20260512
Application Date
20250605

Claims (8)

  1. 1. The brushless motor driver circuit system based on the airborne environment is characterized by comprising a main control circuit (4), a driving circuit (5), a power circuit (6), an analog signal acquisition circuit (9) and a multi-source control circuit; One end of the analog signal acquisition circuit (9) is connected with the power circuit (6), the other end of the analog signal acquisition circuit (9) is connected with the main control circuit (4), and the analog signal acquisition circuit (9) is used for acquiring feedback signals of output current and output voltage of the power circuit (6) and transmitting the feedback signals to the main control circuit (4); The output end of the main control circuit (4) is connected with the driving circuit (5), and the main control circuit (4) outputs a control signal to the driving circuit (5) according to the feedback signal; The output end of the driving circuit (5) is connected with the power circuit (6), and the driving circuit (5) adjusts the output current and the output voltage of the power circuit (6) according to the control signal; The power circuit (6) is connected with the brushless motor, and the power circuit (6) outputs three-phase current and three-phase voltage regulated according to the driving circuit (5); The multi-source control circuit is characterized in that the main control circuit (4), the driving circuit (5), the power circuit (6) and the analog signal acquisition circuit (9) are powered, one end of the multi-source control circuit is connected with the main control circuit (4), and the multi-source control circuit sends a power control signal to the main control circuit (4) to enable the main control circuit (4) to conduct power supply mode selection so as to control forward rotation, reverse rotation and emergency response of the brushless motor.
  2. 2. The on-board environment based brushless motor driver circuitry of claim 1, wherein the multi-source control circuit comprises a power selection mode sub-circuit (1), a power supply sub-circuit (2) and a power signal feedback sub-circuit (3); The input end of the power supply selection mode sub-circuit (1) is connected with the input end of the power signal feedback sub-circuit (3) and is used for feeding back corresponding power signals when the power signals are input; the output end of the power supply selection mode sub-circuit (1) is connected with the power supply circuit (2) and is used for providing power voltage for the power supply circuit; The output end of the power supply circuit provides 15V, 5V and 3.3V voltages, and the power supply circuit is connected with the power circuit (6), the driving circuit (5), the main control circuit (4) and the analog signal acquisition circuit (9); The output end of the power signal feedback sub-circuit (3) is connected with the main control circuit (4) and is used for feeding back the high-voltage power signal after voltage reduction and filtering to the main control circuit (4) for corresponding mode selection.
  3. 3. The on-board environment based brushless motor driver circuitry of claim 2, wherein the power supply selection mode subcircuit (1) comprises a forward buck diode D3, a reverse buck diode D6, an emergency buck diode D8, a normally powered first buck diode D11, and a normally powered second buck diode D13; The positive pole of the forward rotation buck diode D3 is connected with FORWADR power supply signals, the positive pole of the REVERSE rotation buck diode D6 is connected with REVERSE power supply signals, the positive pole of the EMERGENCY buck diode D8 is connected with EMERGENCY power supply signals for voltage reduction, the positive pole of the constant power supply first buck diode D11 is connected with the constant power supply 28V power signals, the negative pole of the constant power supply first buck diode D11 is connected with the positive pole of the second buck diode D13, and the negative poles of the forward rotation buck diode D3, the negative pole of the REVERSE rotation buck diode D6, the negative pole of the EMERGENCY buck diode D8 and the negative pole of the second buck diode D13 are connected in parallel and connected with the input end of the power supply sub-circuit.
  4. 4. The on-board environment based brushless motor driver circuitry according to claim 2, wherein the power signal feedback sub-circuit (3) comprises: One end of a first voltage dividing resistor R11 is connected with the power supply selection mode subcircuit (1), the other end of the first voltage dividing resistor R1 is connected with a pi-type filter consisting of a first filter capacitor C14, a second filter capacitor C15 and a filter inductor L3, the rear end of the pi-type filter is connected with the second voltage dividing resistor R7 in a grounding mode, an RC filter circuit consisting of a filter resistor R6 and a third filter capacitor C13 is connected with the two ends of the second voltage dividing resistor R7 in parallel, and the rear end of the RC filter circuit is connected with a protection diode D2 and is connected with the main control circuit (4).
  5. 5. The brushless motor driver circuit system based on the on-board environment according to claim 2, further comprising a position information feedback circuit (8), wherein the position information feedback circuit (8) is connected with the main control circuit (4), the power supply electronic circuit (2) and a motor hall sensor, and the motor hall sensor is arranged on the brushless motor; The position information feedback circuit (8) is used for feeding back the position of the brushless motor in the working process of the brushless motor.
  6. 6. The on-board environment-based brushless motor driver circuit system according to claim 5, wherein the position information feedback circuit (8) comprises an inverter IC2, wherein a 1Y pin and a 6A pin of the inverter IC2 are connected, a 2Y pin and a 5A pin are connected, a 3Y pin and a 4A pin are connected, 1A pin, 2A pin and 3A pin are connected with the motor hall sensor, and 4Y pin, 5Y pin and 6Y pin are connected with the main control circuit (4).
  7. 7. The brushless motor driver circuit system based on the on-board environment according to claim 2, further comprising a communication circuit (7), wherein the communication circuit (7) connects the main control circuit (4) and an upper computer, and the communication circuit (7) is further connected with the power supply sub-circuit (2).
  8. 8. The brushless motor driver circuit system based on the airborne environment according to claim 7, wherein the communication circuit (7) comprises a CAN communication chip, a CANH pin and a CANL pin of the CAN communication chip are connected with the upper computer, a terminal resistor R118 is connected in parallel between the CAN communication chip and the upper computer, a current limiting resistor R110 is connected between a VCC pin of the CAN communication chip and a power supply pin of the power supply circuit for outputting 5V direct current voltage, and a TX pin and an RX pin of the CAN communication chip are connected with the main control circuit (4).

Description

Brushless motor driver circuit system based on airborne environment Technical Field The application relates to the technical field of motors, in particular to a brushless motor driver circuit system based on an airborne environment. Background In recent years, with the development of industrial automation and intelligence, the requirements on motor driving technology are increasing. The aircraft has the advantages of high-reliability requirements of being suitable for severe environments such as extreme temperatures (-55 ℃ to +125 ℃), vibration, impact and the like, long service life, low failure rate, light weight and high power density, being sensitive to volume and weight of the aircraft, being capable of realizing high-efficiency energy conversion in a limited space, and being capable of avoiding electromagnetic interference to sensitive equipment such as airborne communication, navigation and the like. With the continuous progress and development of motor technology, compared with the traditional brush motor, the brushless direct current motor (BLDC) and the Permanent Magnet Synchronous Motor (PMSM) have the characteristics of high efficiency, high power density, no maintenance (no brush abrasion), low noise and the like, and are widely applied to the aviation field (such as fuel pumps, environmental control systems, actuators and the like). Advanced algorithms such as vector control (FOC), direct Torque Control (DTC) and the like are developed from early square wave driving, so that dynamic response and energy efficiency are improved. The application of wide bandgap semiconductor devices such as silicon carbide (SiC) and gallium nitride (GaN) reduces switching loss and improves the efficiency and power density of the driver. Disclosure of utility model Embodiments of the present application provide a brushless motor driver circuitry based on an on-board environment. In order to achieve the above purpose, the embodiment of the application provides a brushless motor driver circuit system based on an airborne environment, which comprises a main control circuit, a driving circuit, a power circuit, an analog signal acquisition circuit and a multi-source control circuit; One end of the analog signal acquisition circuit is connected with the power circuit, the other end of the analog signal acquisition circuit is connected with the main control circuit, and the analog signal acquisition circuit is used for acquiring feedback signals of output current and output voltage of the power circuit and transmitting the feedback signals to the main control circuit; the output end of the main control circuit is connected with the driving circuit, and the main control circuit outputs a control signal to the driving circuit according to the feedback signal; The output end of the driving circuit is connected with the power circuit, and the driving circuit adjusts the output current and the output voltage of the power circuit according to the control signal; The power circuit is connected with the brushless motor, and outputs three-phase current and three-phase voltage regulated according to the driving circuit; The multi-source control circuit supplies power for the main control circuit, the driving circuit, the power circuit and the analog signal acquisition circuit, one end of the multi-source control circuit is connected with the main control circuit, and the multi-source control circuit sends a power control signal to the main control circuit to enable the main control circuit to perform power mode selection so as to control forward rotation, reverse rotation and emergency response of the brushless motor. In one embodiment, the multi-source control circuit comprises a power supply selection mode sub-circuit, a power supply circuit and a power signal feedback sub-circuit; The input end of the power supply selection mode sub-circuit is connected with the input end of the power signal feedback sub-circuit and is used for feeding back corresponding power signals when the power signals are input; the output end of the power supply selection mode sub-circuit is connected with the power supply circuit and is used for providing power voltage for the power supply circuit; The output end of the power supply circuit provides 15V, 5V and 3.3V voltages, and the power supply circuit is connected with the power circuit, the driving circuit, the main control circuit and the analog signal acquisition circuit; The output end of the power signal feedback sub-circuit is connected with the main control circuit and is used for feeding the high-voltage power signal back to the main control circuit for corresponding mode selection after the high-voltage power signal is reduced and filtered. In one embodiment, the power supply selection mode subcircuit includes a forward buck diode D3, a reverse buck diode D6, an emergency buck diode D8, a normally powered first buck diode D11, and a normally powered second buck diode D13; The positive pole o