Abstract: In this paper, a novel periodic sliding mode control method is designed for 4-DOF tower crane systems with unmatched disturbances as well as unknown/time-varying control directions.

Abstract: Due to their lightweight construction, large tower cranes are prone to structural vibrations that pose a major challenge for load sway damping control design and are the main reason for the ...

To Ryan Williams, it's all mental. Williams is still getting his share of targets. Through five games, he is second on the team with 21 receptions for 336 yards and three touchdowns. He's still made ...