什麼是3DOF，6DOF，9DOF，10DOF，11DOF

DOF（degree of free） 自由度

 

"Degrees Of Freedom" or "DOF" is a number of axis and sensors combined for balancing a plane, a helicopter or a robot.

3DOF : 能夠是3軸的加速度計或者是3軸的陀螺儀。

            This could be a 3-axis accelerometer or it could be a 3-axis gyroscope.

6DOF : 基本上是3軸的加速度計和3軸的陀螺儀結合。

            This is mostly a 3-axis accelerometer combined with a 3-axis gyroscope.

            也能夠是3軸的加速度計和磁力計結合。

            An other example of 6DOF is a combination of an accelerometer and a magnetometer for a tilt-compensated compass.

9DOF : 在6DOF上加上磁力計。

            This is mostly a 6DOF, combined with a magnetometer (compass).

10DOF : 在9DOF上加上壓力傳感器。

                This could be a 9DOF, combined with a baromic pressure sensor.

                The baromic (or absolute pressure) sensor can be used as an indication for the height.

11DOF : 在10DOF上加上GPS模塊。

                This could be the 10DOF, combined with a GPS module.

 

 

具體地址http://playground.arduino.cc/Main/WhatIsDegreesOfFreedom6DOF9DOF10DOF11DOF