Pole surge EMC ground-division FOC controller

Abstract

The invention discloses a pole surge EMC ground division FOC controller, which comprises an FOC controller, an independent GND and a single-chip microcomputer, the independent GND is led out from the FOC controller and is differentiated from the GND of a whole vehicle to form a differential circuit, the single-chip microcomputer monitors the signal change of the independent GND in real time and feeds back the signal change to the FOC controller, and an electromagnetic interference signal is dynamically adjusted and filtered through a differential processing algorithm so as to be prevented from being influenced by the electromagnetic interference of the whole vehicle. The pole surge EMC ground-division FOC controller has the advantages of being low in cost, not prone to damage and easy to maintain.

Description

Technical Field

[0001] The invention belongs to the technical field of FOC controllers, and in particular relates to an extremely surge EMC ground-based FOC controller. Background Art

[0002] With the development of electric vehicles, more and more electric vehicle designs tend to be intelligent designs, and more functions are used to meet social needs. For example, the intelligence of electric vehicles is usually human-machine interaction, automatic driving, etc. This function is simple and fast, but it also has its own shortcomings. The signal interference caused by electromagnetics affects the performance experience of the whole vehicle, such as the whole vehicle automatically driving without operation, accelerator damage, Hall component damage, low voltage protection abnormality, normal GND abnormal vehicle out of control and other problems. Patent CN209402410U discloses an EMC filter, using an EMC filter, including at least one EMC filter unit, the EMC filter unit includes a common mode magnetic ring and a filter capacitor plate, and the common mode magnetic ring and the filter capacitor plate are respectively arranged at the port to be filtered. The EMC filter described in the patent realizes the miniaturization and flexible configuration of the EMC filter by decomposing the EMC filter unit of the EMC filter into two parts: a common mode magnetic ring and a filter capacitor plate. This technology reduces electromagnetic interference by adding a filter, but has the disadvantages of high cost, easy damage, and difficult maintenance. Summary of the invention

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

[0004] To achieve the above-mentioned purpose, the present invention provides an EMC ground-based FOC controller, including a 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 whole 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 electrode 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 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 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 isolation ground COM terminal, and the other is connected in series with resistor R1 and then connected to a +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 single-chip microcomputer performs sampling to confirm that the electromagnetic interference signal is within a certain frequency. The single-chip microcomputer program integrates the collected electromagnetic interference signal, and the processed electromagnetic interference signal is equivalent to a voltage signal. The equivalent voltage signal is applied to the isolated COM end through PID regulation.

[0008] As a further solution of the present invention: the isolated ground COM terminal interference identification isolation ground, including but 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 routing.

[0010] Compared with the prior art, the present invention 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. 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a differential circuit diagram of the present invention. DETAILED DESCRIPTION

[0012] The present invention will be further described below in conjunction with 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 is differentially 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 to protect it from the electromagnetic interference of the whole vehicle.

[0014] like Figure 1 As shown, the differential circuit includes a positive electrode IP of an operational amplifier OPA connected to one end of a capacitor C2 and one end of a resistor R3 respectively, the other end of the capacitor C2 is connected to the ground GND, the other end of the resistor R3 is divided into two paths, one path is connected to the 1st pin 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 the ground 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 the 2nd pin of the integrated operational amplifier IC1, and the other end of the resistor R6 is connected to the ground GND; the 3rd pin of the integrated operational amplifier IC1 is divided into three paths, one path is connected in series with the resistor R2 and then connected to the isolated ground COM terminal, and the other path is connected in series with the resistor R1 and then connected to the +5V power supply; the 8th pin 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 the capacitor C1 and then connected to the ground GND; the 4th pin of the integrated operational amplifier is 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 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 FOC controller solves the six major problems of electric vehicles: flying, burning of the steering handle, short circuit failure of forward and reverse rotation in rainy days, Hall damage, abnormal 5V voltage and untimely protection, and loss of control caused by rectification of the vehicle's main lines, making the entire vehicle safer and more reliable.

[0021] The present invention 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, and the single-chip microcomputer can monitor the independent GND signal changes 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. A polar surge EMC ground-based FOC controller, characterized in that: 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 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 a capacitor C2 and one end of a 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 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 isolation ground COM terminal, and the other path is connected in series with resistor R1 and then connected to a +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 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. A surge 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 COM end through PID regulation.

5. The 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 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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