highspeed ammunition feeding equipment

 

 

CHEN Hao, WANG Maosen

 

(School of Mechanical Engineering and Automation, Nanjing University

of Science and Technology, Nanjing 210094, China)

 

 

Abstract: Aiming at the control strategy of AC servo drive for highspeed ammunition feeding equipment, field oriented control(FOC) and direct torque control(DTC), permanent magnet synchronous motor(PMSM) mathematical model, vector control theory and “phase current reconstruction” technology were researched. A new strategy named “Fixed time effective vector insertion” was proposed after analyzing some existent methods that make the current reconstruction realized in whole regions. Simulation experiments were carried out in Matlab/Simulink and hardware platform was built for experiments. The results indicate that “Fixed time effective vector insertion” can avoid the asymmetry of PWM output, this strategy can realize the current reconstruction in whole regions ,the current waveform distortion rate is only 5.35%. The correctness and the feasibility of the control strategies are verified,And some good foundation is laid for further experiment with AC servo drive for highspeed ammunition feeding equipment.

 

Key words: highspeed ammunition feeding equipment; permanent magnet synchronous motor (PMSM); AC servo system; vector control; current reconstruction