IMU角度结算python代码
时间: 2025-03-06 16:50:38 AIGC 浏览: 52
### Python 实现 IMU 角度计算
对于IMU角度计算,特别是处理来自传感器的数据如方位角(azimuth)、俯仰角(pitch),可以采用互补滤波器(complementary filter)来融合加速度计和陀螺仪数据。下面给出一段基于此原理的角度计算代码示例。
```python
import time
class IMUAngleCalculator:
def __init__(self, alpha=0.98):
self.alpha = alpha # Complementary filter coefficient
self.pitch_angle = 0
def update_pitch(self, gyro_x_rate, accel_y, accel_z, dt):
"""
Update pitch angle using complementary filter.
:param gyro_x_rate: Angular velocity around X-axis from gyroscope (degrees/second)
:param accel_y: Acceleration along Y-axis from accelerometer (g-force units)
:param accel_z: Acceleration along Z-axis from accelerometer (g-force units)
:param dt: Time interval since last measurement (seconds)
"""
# Calculate pitch angle based on acceleration data
acc_pitch = math.degrees(math.atan2(-accel_y, accel_z))
# Integrate angular rate over time to get change in angle
delta_theta = gyro_x_rate * dt
# Apply complementary filter equation
self.pitch_angle = self.alpha * (self.pitch_angle + delta_theta) + (1 - self.alpha) * acc_pitch
def process_raw_azimuth(raw_value):
"""Convert raw azimuth reading into degrees."""
return float(raw_value) / 100 # Convert hundredths of a degree to decimal format[^1]
# Example usage
imu_calculator = IMUAngleCalculator()
gyro_x_rate = ... # Replace with actual gyro x-rate readings
accel_y = ... # Replace with actual y-acceleration values
accel_z = ... # Replace with actual z-acceleration values
dt = ... # Time difference between measurements
imu_calculator.update_pitch(gyro_x_rate, accel_y, accel_z, dt)
raw_azimuth_reading = ...
azimuth_degrees = process_raw_azimuth(raw_azimuth_reading)
print(f"Azimuth Angle: {azimuth_degrees:.2f}°")
```
该程序定义了一个`IMUAngleCalculator`类用于更新俯仰角(Pitch)[^2],并通过辅助函数`process_raw_azimuth()`将原始读数转换成十进制度数形式的方位角。
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