Abstract: We present a uniformly globally exponentially stable hybrid angular velocity observer for rigid body systems designed directly on SO(3) × ℝ 3. The global exponential stability result makes ...

Abstract: This paper proposes a simple and physically intuitive approach to the angular velocity estimation problem of rigid-body spacecraft. By taking the advantage of the underlying nature of ...

Here's a fun stat on velocity, which MLB's Daren Willman first pointed out last week on X. Entering play on Tuesday, the ...

The Phillies invested $42 million per season in Wheeler as he enters his late 30s, not because of the fastball, but for his ...