System and method for simulating excitation power supply function based on ARM and FPGA

Abstract

The invention provides a system and a method for simulating an excitation power supply function based on an ARM (Advanced RISC Machines) and an FPGA (Field Programmable Gate Array). Calculation is achieved through an ARM + FPGA hardware circuit and a software program on the core board, and the FPGA of the core board achieves DAC sine and cosine signal generation of excitation signals. Analog output DAC sine and cosine signals of the core board are sent to a circuit DAC7512N of the electronic platform analog board, the circuit DAC7512N outputs an excitation power supply signal initial value corresponding to the analog quantity, and finally the excitation power supply signal is output after the excitation power supply signal initial value is sent to an operational amplifier OP2227 circuit to be amplified in the same direction. A method of combining a hardware integrated circuit and a software program is adopted, the excitation power supply function is simulated and realized, and the excitation power supply function simulation circuit provides a power supply function for angle acquisition of a servo system. According to the invention, excitation power supply output can be simulated, the effect is vivid, the manufacturing cost is low, and excitation power supply output of different frequencies can be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of servo stabilization platform control, and in particular relates to a method for realizing a simulated excitation power supply function. Background Art

[0002] In the servo system, a rotary transformer is usually required to detect the position of the motor rotor in real time, and the motor speed must also be calculated in order to accurately control the position, speed and torque of the motor and obtain excellent performance. Because the output of the rotary transformer is an analog quantity, and for digital control systems, the analog quantity cannot be used directly, it needs to be processed accordingly and converted into a digital signal corresponding to the analog signal before it can be applied to a digital servo system controlled by a computer. Therefore, this requires the use of a special rotary transformer-digital converter (RDC) to achieve this. The special rotary transformer-digital converter (RDC) needs to be powered by an excitation power supply to work properly. Summary of the invention

[0003] In view of this, the present invention provides a system and method for simulating the excitation power supply function based on ARM and FPGA. The present invention adopts a method combining hardware integrated circuits with software programs to simulate the excitation power supply function and provide a power supply function excitation power supply function simulation circuit for servo system angle acquisition. The present invention can simulate the excitation power supply output, the effect is realistic, the cost is low, and the excitation power supply output of different frequencies can be realized.

[0004] The technical scheme for implementing the present invention is as follows:

[0005] A method for realizing an excitation power supply function simulation circuit based on ARM (STM32H743VIHX) and FPGA (XC6SLX45-2CSG3241), comprising the following steps:

[0006] Step 1: Use the ARM+FPGA hardware circuit and software program on the core board to realize the output of the digital signal of the excitation power supply function;

[0007] Step 2: Output the excitation power digital signal of the core board to the electronic simulation platform board, and the electronic simulation platform board realizes the original analog signal output of the excitation power signal through the circuit DAC7512N.

[0008] Step 3: The operational amplifier OP2227 circuit on the electronic simulation platform board realizes the final amplification output of the excitation power supply signal.

[0009] The present invention has the following beneficial effects:

[0010] 1. The present invention provides a system and method for simulating the excitation power supply function based on ARM and FPGA, which can replace the real excitation power supply module during the debugging, testing and experiment of the servo system stable platform to realize the power supply function of the servo stable platform angle acquisition and realize the closed-loop control of the servo platform.

[0011] 2. The debugging method of the present invention is simple and practical, and can quickly and effectively debug and test different stable platforms.

[0012] 3. The present invention realizes the simulation of the excitation power supply function through digital and analog circuits, reduces the economic cost of product use, is conducive to the troubleshooting and processing of faulty products in batch production, greatly shortens the troubleshooting time, and improves productivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Implement circuit schematics for ARM functions;

[0014] Figure 2 Implement circuit schematics for FPGA functions;

[0015] Figure 3 This is the schematic diagram of the external FLASH memory;

[0016] Figure 4 It is the core board interface;

[0017] Figure 5 For serial port output;

[0018] Figure 6 Schematic diagram of power supply for ARM+FPGA;

[0019] Figure 7 The circuit schematic diagram is formed for the excitation power signal of the electronic platform. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figure 1-Figure 7 As shown, the present invention provides a method for realizing the function of an excitation power supply module based on ARM (STM32H743VIHX) and FPGA (XC6SLX45-2CSG3241), including a baseboard, a core board, and an electronic platform simulation board. The original digital control signal of the excitation power supply is realized by the ARM+FPGA hardware circuit and software program on the core board. The excitation DAC digital control signal is generated once every 5 microseconds by the FPGA, and is generated dozens of times in one sinusoidal cycle. After filtering, it is sent to the circuit DAC7512N of the electronic platform simulation board. The circuit DAC7512N outputs the initial value of the excitation power supply signal corresponding to the analog quantity, and finally sends it to the operational amplifier OP2227 circuit for amplification in the same direction and then outputs the excitation power supply signal.

Claims

1. A system based on ARM and FPGA to simulate the excitation power supply function, characterized in that: It includes a baseboard, a core board and an electronic platform simulation board. The core board includes an ARM+FPGA hardware circuit. The electronic platform simulation board includes a circuit DAC7512N and an OP2227 circuit. The ARM+FPGA hardware circuit on the core board is electrically connected to the circuit DAC7512N, and the circuit DAC7512N is electrically connected to the operational amplifier OP2227 circuit.

2. The system based on ARM and FPGA to simulate the excitation power supply function according to claim 1, characterized in that: The ARM+FPGA is used to generate the original digital DAC control signal of the excitation power supply signal.

3. The system based on ARM and FPGA to simulate the excitation power supply function according to claim 1, characterized in that: The electronic platform analog board realizes the original analog output of the excitation power supply signal through the circuit DAC7512N.

4. The system based on ARM and FPGA to simulate the excitation power supply function according to claim 1, characterized in that: The operational amplifier OP2227 circuit on the electronic platform analog board realizes the final amplification output of the excitation power supply signal.

5. A system based on ARM and FPGA to simulate excitation power supply function according to any one of claims 1 to 4, characterized in that: For ARM, select STM32H743VIHX, and for FPGA, select XC6SLX45-2CSG3241.

6. A method for realizing the function of simulating excitation power supply based on ARM and FPGA, characterized in that: The calculation is realized through the ARM+FPGA hardware circuit and software program on the core board. The FPGA of the core board realizes the generation of DAC sine and cosine signals of the excitation signal; the analog output DAC sine and cosine signals of the core board are sent to the circuit DAC7512N of the electronic platform simulation board, and the circuit DAC7512N outputs the initial value of the excitation power supply signal corresponding to the analog quantity, and finally sends it to the operational amplifier OP2227 circuit for amplification in the same direction and then outputs the excitation power supply signal.

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