Pole surge EMC ground-division FOC controller

Abstract

The utility model discloses a pole surge EMC ground division FOC controller, including FOC controller, independent GND, single-chip microcomputer, independent GND is led out from FOC controller and is separated from the whole vehicle GND to form differential circuit, single-chip microcomputer monitors independent GND signal change in real time and feeds back to FOC controller, through differential processing algorithm dynamic adjustment, filters electromagnetic interference signal to prevent it from whole vehicle electromagnetic interference influence. The polar surge EMC ground-division FOC controller has the characteristics of low cost, difficulty in damage and easiness in maintenance.

Description

Technical Field

[0001] The utility model belongs to the technical field of FOC controllers, in particular to a Jiyong EMC ground-based FOC controller. Background Art

[0002] With the development of electric vehicles, more and more electric vehicle designs are trending towards intelligent designs, meeting social needs through more functions. For example, the intelligent features of electric vehicles typically include human-machine interaction and autonomous driving. While these features are simple and fast, they also have their own drawbacks. Electromagnetic signal interference affects the overall vehicle performance experience, such as the vehicle automatically driving without operation, accelerator damage, Hall effect component damage, low voltage protection anomalies, and vehicle loss of control due to abnormal GND conditions. CN209402410U discloses an EMC filter, comprising at least one EMC filter unit, the EMC filter unit including a common-mode magnetic ring and a filter capacitor plate, each of which is disposed at a port to be filtered. Implementing the EMC filter described in this utility model has the following beneficial effects: by decomposing the EMC filter unit into two components, the common-mode magnetic ring and the filter capacitor plate, the EMC filter is miniaturized and flexibly configured. However, this technology reduces electromagnetic interference by adding a filter, but has the disadvantages of high cost, fragility, and difficulty in maintenance. Utility Model Content

[0003] The purpose of the utility model is to provide a low-cost, non-destructive and easy-maintain Jiyong EMC ground-based FOC controller.

[0004] To achieve the above-mentioned purpose, the utility model of Jiyong EMC ground-separated FOC controller includes an FOC controller, an independent GND, and a single-chip microcomputer. The independent GND is led out from the FOC controller and is differentially separated from the GND of the entire vehicle to form a differential circuit. The single-chip microcomputer monitors the changes of the independent GND signal in real time and feeds back to the FOC controller.

[0005] As a further solution of the present invention: the differential circuit includes an operational amplifier OPA, the positive pole IP of the operational amplifier OPA is respectively connected to one end of the capacitor C2 and one end of the resistor R3, the other end of the capacitor C2 is connected to GND, the other end of the resistor R3 is divided into two paths, one is connected to pin 1 of the integrated operational amplifier IC1, and the other is connected between resistors R4 and R5, the other end of the resistor R4 is respectively connected to the positive pole IN of the operational amplifier OPA and the other end of the capacitor C3, and the other end of the capacitor C3 is connected to GND; the other end of the resistor R5 is divided into two paths, one is connected to one end of the resistor R6, and the other is connected to pin 2 of the integrated operational amplifier IC1, and the other end of the resistor R6 is connected to GND; pin 3 of the integrated operational amplifier IC1 is divided into two paths, one is connected in series with resistor R2 and then connected to the isolated ground COM terminal, and the other is connected in series with resistor R1 and then connected to the +5V power supply; pin 8 of the integrated operational amplifier is divided into two paths, one is connected to the +5V power supply, and the other is connected in series with capacitor C1 and then connected to GND; pin 4 of the integrated operational amplifier is connected to GND.

[0006] As a further solution of the present invention: the isolated ground COM terminal is the GND of the entire vehicle.

[0007] As a further solution of the present invention: when an electromagnetic interference signal is received at the GND end of the differential circuit, the analog-to-digital converter ADC port of the microcontroller performs sampling to confirm that the electromagnetic interference signal is within a certain frequency. The microcontroller program integrates the collected electromagnetic interference signal, and converts the processed electromagnetic interference signal into a voltage signal. The equivalent voltage signal is applied to the isolated ground COM end through PID regulation.

[0008] As a further solution of the present invention: the isolated ground COM terminal interference identification isolation ground includes but is not limited to the throttle signal ground, forward and reverse signal ground, voltage selection ground, soft and hard start, and P gear.

[0009] As a further solution of the present invention: the FOC controller includes a PCB board inside, and the PCB board has a serpentine wiring.

[0010] Compared with the existing technology, the utility model divides the independent GND inside the Jiyong EMC ground-dividing FOC controller and uses a differential circuit for isolation instead of a conventional filter for isolation, thereby reducing costs. The differential circuit composed of different resistors makes the FOC controller less prone to damage and easier to maintain. In addition, the single-chip microcomputer can monitor the changes in the independent GND signal in real time, effectively solving problems caused by electromagnetic interference signals such as automatic driving of the vehicle without operation, damage to the accelerator, damage to the Hall component, abnormal low voltage protection, and loss of control of the vehicle due to abnormal normal GND, thereby avoiding accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a differential circuit diagram of the utility model. DETAILED DESCRIPTION

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Jiyong EMC ground-separated FOC controller includes FOC controller, independent GND, and single-chip microcomputer. The independent GND is led out from the FOC controller and separated from the GND of the whole vehicle to form a differential circuit. The single-chip microcomputer monitors the change of the independent GND signal in real time and feeds it back to the FOC controller. It dynamically adjusts through the differential processing algorithm to filter the electromagnetic interference signal and protect it from the electromagnetic interference of the whole vehicle.

[0014] like Figure 1 As shown, the differential circuit includes the positive electrode IP of the operational amplifier OPA being connected to one end of the capacitor C2 and one end of the resistor R3 respectively, the other end of the capacitor C2 being grounded GND, the other end of the resistor R3 being divided into two paths, one path being connected to pin 1 of the integrated operational amplifier IC1, and the other path being connected between resistors R4 and R5, the other end of the resistor R4 being connected to the positive electrode IN of the operational amplifier OPA and the other end of the capacitor C3 respectively, and the other end of the capacitor C3 being grounded GND; the other end of the resistor R5 being divided into two paths, one path being connected to one end of the resistor R6, and the other path being connected to pin 2 of the integrated operational amplifier IC1, and the other end of the resistor R6 being grounded GND; pin 3 of the integrated operational amplifier IC1 being divided into three paths, one path being connected in series with resistor R2 and then connected to the isolated ground COM terminal, and the other path being connected in series with resistor R1 and then connected to the +5V power supply; pin 8 of the integrated operational amplifier being divided into two paths, one path being connected to the +5V power supply, and the other path being connected in series with capacitor C1 and then connected to the ground GND; pin 4 of the integrated operational amplifier being grounded GND.

[0015] The COM terminal in the differential circuit is the GND of the entire vehicle.

[0016] When an electromagnetic interference signal is received at the GND end of the differential circuit, the analog-to-digital converter ADC port of the microcontroller performs sampling to confirm that the electromagnetic interference signal is within a certain frequency, mainly above 1HZ. The microcontroller program integrates the collected electromagnetic interference signal, converts the processed electromagnetic interference signal into a voltage signal, and applies the equivalent voltage signal to the isolated ground COM end through PID regulation.

[0017] The electromagnetic interference signal can be 5-100HZ. The electromagnetic interference signal is divided into a frequency range, and the highest frequency range interference and action time are integrated. The processed signal pressure difference is greater than the high and low level signals recognized by the microcontroller. According to the high and low level signal voltages, the PID dynamically adjusts the isolated ground COM terminal.

[0018] The isolated ground COM terminal interference identification isolation ground mentioned above includes but is not limited to the throttle signal ground, forward and reverse signal ground, voltage selection ground, soft and hard start, and P gear.

[0019] The Jiyong EMC ground-based FOC controller also includes a PCB board with serpentine routing. The serpentine routing can more easily achieve delay matching of differential signals to ensure that they arrive at the destination at the same time.

[0020] Jiyong EMC's ground-based FOC controller solves the six major problems of electric vehicles: flying, burning of the steering wheel, short circuit failure of forward and reverse rotation in rainy days, Hall damage, abnormal 5V voltage without timely protection, and vehicle loss of control caused by rectification of the vehicle's main lines, making the entire vehicle safer and more reliable.

[0021] The utility model divides an independent GND inside the Jiyong EMC ground-dividing FOC controller and uses a differential circuit for isolation instead of a conventional filter for isolation, thereby reducing costs. The differential circuit is composed of different resistors to make the FOC controller less prone to damage and easier to maintain. In addition, the single-chip microcomputer can monitor the changes in the independent GND signal in real time, effectively solving problems caused by electromagnetic interference signals such as automatic driving of the whole vehicle without operation, damage to the accelerator, damage to the Hall component, abnormal low voltage protection, and loss of control of the vehicle due to abnormal normal GND, thereby avoiding accidents.

Claims

1. Jiyong EMC ground-based FOC controller, characterized by: It includes an FOC controller, an independent GND, and a single-chip microcomputer. The independent GND is led out from the FOC controller and is differentially separated from the GND of the entire vehicle to form a differential circuit. The single-chip microcomputer monitors the changes in the independent GND signal in real time and feeds back to the FOC controller.

2. The Jiyong EMC ground-based FOC controller according to claim 1 is characterized in that: The differential circuit includes an operational amplifier OPA, wherein the positive electrode IP of the operational amplifier OPA is respectively connected to one end of the capacitor C2 and one end of the resistor R3, and the other end of the capacitor C2 is connected to GND. The other end of the resistor R3 is divided into two paths, one path is connected to pin 1 of the integrated operational amplifier IC1, and the other path is connected between resistors R4 and R5. The other end of the resistor R4 is respectively connected to the positive electrode IN of the operational amplifier OPA and the other end of the capacitor C3, and the other end of the capacitor C3 is connected to GND; the other end of the resistor R5 is divided into two paths, one path is connected to one end of the resistor R6, and the other path is connected to pin 2 of the integrated operational amplifier IC1, and the other end of the resistor R6 is connected to GND; pin 3 of the integrated operational amplifier IC1 is divided into two paths, one path is connected in series with resistor R2 and then connected to the isolated ground COM terminal, and the other path is connected in series with resistor R1 and then connected to the +5V power supply; pin 8 of the integrated operational amplifier is divided into two paths, one path is connected to the +5V power supply, and the other path is connected in series with capacitor C1 and then connected to GND; pin 4 of the integrated operational amplifier is connected to GND.

3. The Jiyong EMC ground-based FOC controller according to claim 2 is characterized in that: The isolated ground COM terminal is the GND of the entire vehicle.

4. The Jiyong EMC ground-based FOC controller according to claim 1 or 2, characterized in that: When an electromagnetic interference signal is received at the GND end of the differential circuit, the analog-to-digital converter ADC port of the microcontroller performs sampling to confirm that the electromagnetic interference signal is within a certain frequency. The microcontroller program integrates the collected electromagnetic interference signal, converts the processed electromagnetic interference signal into a voltage signal, and applies the equivalent voltage signal to the isolated ground COM end through PID regulation.

5. The Jiyong EMC ground-based FOC controller according to claim 3 is characterized in that: The isolated ground COM terminal interference identification isolation ground includes but is not limited to the throttle signal ground, forward and reverse signal ground, voltage selection ground, soft and hard start, and P gear.

6. The Jiyong EMC ground-based FOC controller according to claim 1, characterized in that: The FOC controller includes a PCB board inside, and the PCB board has serpentine wiring.

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