Aiming at the position and attitude tracking of coaxial rotor aircraft (CRA), this paper proposes a combinatorial control method of sliding mode control (SMC) coupled with proportional-integral-derivative control (PIDC). Considering the complete description of flight dynamics, aerodynamics and airflow...
The ultrasonic transducer is coaxially integrated with the welding wire, and both the z-axis of the ultrasonic equipment and the GMAW welding gun can be independently adjusted. The maximum power output of the ultrasonic transducer is 2 kW. The experiments were conducted with the CLOOS QinTron ...