Analiza pracy układu napędowego z nieliniowym obciążeniem

Modern drive systems with DC commutator motors excited by permanent magnets and supplied from power-electronic converters can successfully compete, particularly in mass applications, with power transmission systems with electromagnetically excited universal motors. This paper presents an analysis of the operation of a DC power transmission system with a permanent magnet DC motor and a pulse transistor converter. Time-variable interference from the mains and a nonlinear (as a function of angular velocity or shaft position) load torque act on the system. Nonlinear, follow-up current or armature emf regulators, making the system resistant to mains interference, were used to control the converter. The speed control system was synthesized through the proper shaping of the closed system transmittance polynomials. An analysis of the operation of selected structures of the angular velocity and armature current control system in the presence of strong nonlinear interference from the torque load was carried out. A structure ensuring that the basic requirements are met through simple measures introduced into the measurement and control system was determined. A selected structure of the system controlling a 1 kW drive, ensuring the proper performance of the system, and its possible applications were determined.