Question

我正在尝试计算我的Quadcopter项目的偏航俯仰和滚转。我从Here获取了代码。我成功地计算了滚动和俯仰角度，并对这些值应用了补充过滤器，这些值非常接近Jeff Rowberg的代码计算出的值。我想从这个RAW数据计算偏航值，而不是使用Jeff的代码。我知道由RAW数据计算出的偏航不会像杰夫那样准确，但有人可以告诉我计算加速度计和陀螺仪RAW数据的偏航值背后的公式或数学吗？这是我正在使用的代码

#include<Wire.h>
const int MPU=0x68;  // I2C address of the MPU-6050
int16_t AcX,AcY,AcZ,Tmp,GyX,GyY,GyZ;
double compAngleX,compAngleY,/*gzangle,*/compAnglez,timer;
  double accXangle ,accYangle,acczangle ,gyroXrate ,gyroYrate,gyroZrate;
  double gyroXAngle, gyroYAngle, gyroZAngle;
  // float rgyro,w;
  int ap=0.955;

  void setup()
{
   Serial.begin(115200);
/////////////////////// SENSOR READING//////////
 Wire.begin();
  Wire.beginTransmission(MPU);
  Wire.write(0x6B);  // PWR_MGMT_1 register
  Wire.write(0);     // set to zero (wakes up the MPU-6050)
  Wire.endTransmission(true);
  ///////////////////////////////////////
}
void loop()
{

  Wire.beginTransmission(MPU);
  Wire.write(0x3B);  // starting with register 0x3B (ACCEL_XOUT_H)
  Wire.endTransmission(false);
  Wire.requestFrom(MPU,14,true);  // request a total of 14 registers
  AcX=Wire.read()<<8|Wire.read();  // 0x3B (ACCEL_XOUT_H) & 0x3C (ACCEL_XOUT_L)    
  AcY=Wire.read()<<8|Wire.read();  // 0x3D (ACCEL_YOUT_H) & 0x3E (ACCEL_YOUT_L)
  AcZ=Wire.read()<<8|Wire.read();  // 0x3F (ACCEL_ZOUT_H) & 0x40 (ACCEL_ZOUT_L)
  Tmp=Wire.read()<<8|Wire.read();  // 0x41 (TEMP_OUT_H) & 0x42 (TEMP_OUT_L)
  GyX=Wire.read()<<8|Wire.read();  // 0x43 (GYRO_XOUT_H) & 0x44 (GYRO_XOUT_L)
  GyY=Wire.read()<<8|Wire.read();  // 0x45 (GYRO_YOUT_H) & 0x46 (GYRO_YOUT_L)
  GyZ=Wire.read()<<8|Wire.read();  // 0x47 (GYRO_ZOUT_H) & 0x48 (GYRO_ZOUT_L)



 accXangle = (atan2(AcY, AcZ) * RAD_TO_DEG);
 accYangle = (atan2(AcX, AcZ) * RAD_TO_DEG);
acczangle = (atan2(AcX,AcY) * RAD_TO_DEG);/* my attempt to calculate yaw but not correct*/
 gyroXrate = GyX / 16.5;
 gyroYrate = GyY / 16.5;
 gyroZrate = GyZ/ 16.5;
 timer = millis();
 //angular position
 gyroXAngle += gyroXrate * (millis()-timer)/1000;
 gyroYAngle += gyroYrate * (millis()-timer)/1000;
 gyroZAngle += gyroZrate * (millis()-timer)/1000;/* my attempt to calculate yaw but not correct*/
//---------------------------\\
 //COMPLIMENTRY FILTER STARTED\\
 //---------------------------\\

 compAngleX = ap * (compAngleX + gyroXAngle) + (1-ap) * accXangle;
 compAngleY = ap * (compAngleY + gyroYAngle) + (1-ap) * accYangle;
 compAnglez = ap * (compAnglez + gyroZAngle) + (1-ap) * acczangle; /*yaw but not correct*/
 //---------------------------\\
 //COMPLIMENTRY FILTER ENDED  \\
 //---------------------------\\

   Serial.print("ypr\t");
            Serial.print(compAnglez);
            Serial.print("\t");
            Serial.print(compAngleY);
            Serial.print("\t");
            Serial.println(compAngleX);
}

根据MPU 6050的RAW数据进行偏航计算

0 个答案: