MPU6050陀螺仪航向角有零飘怎么办
时间: 2024-01-08 09:03:27 浏览: 977
如果 MPU6050 陀螺仪的航向角有零飘,可以考虑以下几种解决方法:
1. 进行校准:使用校准软件或者自行编写程序,对陀螺仪进行校准。在校准的过程中,需要将陀螺仪放置在水平面上,并且保持不动。可以采用静态校准或者动态校准的方式。
2. 滤波处理:在陀螺仪读数的基础上,采用滤波算法进行处理,减小或者消除零飘的影响。可以采用卡尔曼滤波、无迹卡尔曼滤波、中值滤波等算法。
3. 更换硬件:如果以上两种方法都无法解决问题,可以考虑更换 MPU6050 陀螺仪硬件,或者更换整个系统的硬件。
相关问题
对MPU6050陀螺仪航向角有零飘进行矫正代码
以下是一个简单的基于 Arduino 平台的 MPU6050 陀螺仪航向角零飘校准代码示例,供参考:
```
#include "Wire.h"
#include "MPU6050.h"
MPU6050 mpu;
int16_t gx_offset, gy_offset, gz_offset;
void setup() {
Wire.begin();
Serial.begin(9600);
mpu.initialize();
mpu.setFullScaleGyroRange(MPU6050_GYRO_FS_250);
}
void loop() {
int32_t gx_sum = 0, gy_sum = 0, gz_sum = 0;
int16_t gx, gy, gz;
for (int i = 0; i < 1000; i++) {
mpu.getRotation(&gx, &gy, &gz);
gx_sum += gx;
gy_sum += gy;
gz_sum += gz;
delay(2);
}
gx_offset = gx_sum / 1000;
gy_offset = gy_sum / 1000;
gz_offset = gz_sum / 1000;
Serial.print("gx_offset = ");
Serial.print(gx_offset);
Serial.print(", gy_offset = ");
Serial.print(gy_offset);
Serial.print(", gz_offset = ");
Serial.println(gz_offset);
while (1) {
mpu.getRotation(&gx, &gy, &gz);
gx -= gx_offset;
gy -= gy_offset;
gz -= gz_offset;
Serial.print("gx = ");
Serial.print(gx);
Serial.print(", gy = ");
Serial.print(gy);
Serial.print(", gz = ");
Serial.println(gz);
delay(2);
}
}
```
这段代码首先进行了陀螺仪的初始化和设置,然后进入主循环。在主循环中,通过采集 1000 次陀螺仪的读数,计算出零飘的偏移量,然后将偏移量从陀螺仪读数中减去,得到校准后的读数。最后将校准后的读数通过串口输出,方便调试。
STM32F407标准库函数对MPU6050陀螺仪航向角有零飘进行矫正代码
以下是一个基于 STM32F407 标准库函数的 MPU6050 陀螺仪航向角零飘校准代码示例,供参考:
```
#include "stm32f4xx.h"
#include "stm32f4xx_i2c.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_rcc.h"
#define MPU6050_I2C_ADDR 0x68
I2C_InitTypeDef I2C_InitStruct;
GPIO_InitTypeDef GPIO_InitStruct;
void I2C_Configuration(void) {
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_9;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStruct.GPIO_OType = GPIO_OType_OD;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOB, &GPIO_InitStruct);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_I2C1);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource9, GPIO_AF_I2C1);
I2C_InitStruct.I2C_ClockSpeed = 400000;
I2C_InitStruct.I2C_Mode = I2C_Mode_I2C;
I2C_InitStruct.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStruct.I2C_OwnAddress1 = 0x00;
I2C_InitStruct.I2C_Ack = I2C_Ack_Enable;
I2C_InitStruct.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_Init(I2C1, &I2C_InitStruct);
I2C_Cmd(I2C1, ENABLE);
}
void MPU6050_WriteReg(uint8_t reg, uint8_t value) {
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C1, ENABLE);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C1, MPU6050_I2C_ADDR, I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C1, reg);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_SendData(I2C1, value);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTOP(I2C1, ENABLE);
}
uint8_t MPU6050_ReadReg(uint8_t reg) {
uint8_t value;
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C1, ENABLE);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C1, MPU6050_I2C_ADDR, I2C_Direction_Transmitter);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C1, reg);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTART(I2C1, ENABLE);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
I2C_Send7bitAddress(I2C1, MPU6050_I2C_ADDR, I2C_Direction_Receiver);
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));
value = I2C_ReceiveData(I2C1);
I2C_GenerateSTOP(I2C1, ENABLE);
return value;
}
void MPU6050_Init(void) {
MPU6050_WriteReg(0x6B, 0x00); // 解除休眠状态
MPU6050_WriteReg(0x1B, 0x08); // 陀螺仪量程设置为±500°/s
}
void MPU6050_Calibrate(int16_t *gx_offset, int16_t *gy_offset, int16_t *gz_offset) {
int32_t gx_sum = 0, gy_sum = 0, gz_sum = 0;
int16_t gx, gy, gz;
for (int i = 0; i < 1000; i++) {
gx = (int16_t)((uint16_t)MPU6050_ReadReg(0x43) << 8 | MPU6050_ReadReg(0x44));
gy = (int16_t)((uint16_t)MPU6050_ReadReg(0x45) << 8 | MPU6050_ReadReg(0x46));
gz = (int16_t)((uint16_t)MPU6050_ReadReg(0x47) << 8 | MPU6050_ReadReg(0x48));
gx_sum += gx;
gy_sum += gy;
gz_sum += gz;
delay(2);
}
*gx_offset = gx_sum / 1000;
*gy_offset = gy_sum / 1000;
*gz_offset = gz_sum / 1000;
}
void MPU6050_GetRotation(int16_t *gx, int16_t *gy, int16_t *gz, int16_t gx_offset, int16_t gy_offset, int16_t gz_offset) {
*gx = (int16_t)((uint16_t)MPU6050_ReadReg(0x43) << 8 | MPU6050_ReadReg(0x44)) - gx_offset;
*gy = (int16_t)((uint16_t)MPU6050_ReadReg(0x45) << 8 | MPU6050_ReadReg(0x46)) - gy_offset;
*gz = (int16_t)((uint16_t)MPU6050_ReadReg(0x47) << 8 | MPU6050_ReadReg(0x48)) - gz_offset;
}
int main(void) {
int16_t gx_offset, gy_offset, gz_offset;
int16_t gx, gy, gz;
I2C_Configuration();
MPU6050_Init();
MPU6050_Calibrate(&gx_offset, &gy_offset, &gz_offset);
while (1) {
MPU6050_GetRotation(&gx, &gy, &gz, gx_offset, gy_offset, gz_offset);
printf("gx = %d, gy = %d, gz = %d\n", gx, gy, gz);
delay(2);
}
}
```
这段代码首先进行了 I2C 和 GPIO 的初始化,然后进入主函数。在主函数中,首先进行了 MPU6050 的初始化和设置,然后进行了零飘校准。在校准的过程中,通过采集 1000 次陀螺仪的读数,计算出零飘的偏移量。最后,通过 MPU6050_GetRotation 函数获取校准后的陀螺仪读数,并输出到串口。
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