What is Airmode? Without Airmode, normally when you lower your throttle stick all the way down, the motors on a quadcopter should either stop or all spin at the same speed (depends on how you set it up). But when Airmode is enabled, it keeps PID loops active when your throttle stick is at zero, which allows the pilots to steer and control the quad even in a free fall. That enables pilots to pull off some crazy aerobatics, and have better control over the entire throttle range.
简而言之,就是让你在小油门操作的时候仍然能让PID参与控制,不会因为油门量太小导致电机转速过低甚至停转
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