2002 · 33 citations · 0 references
EngineeringElectrical EngineeringMechatronics EngineeringAnalog ElectronicsMotor ControlProcess ControlControl SystemsControl TheoryDrive SystemsElectric Motor Drive SystemsElectric Motor DrivesFeedforward ControlDc Motor DrivesDigital Control Of DrivesDirect Current Motor DrivesDirect DriveMotor Drive ControlSpeed CharacteristicsTorque RippleTorque Ripple Mitigation
A torque control system for DDM (direct drive motor) with a permanent magnet rotor equipped with a torque observer implemented by software of a digital signal processor is proposed. The speed fluctuation against a disturbance can be fully removed with a torque feedforward loop. It is shown that the direct motor control system with a torque observer gives a superior speed control characteristics. Furthermore, the system has a robustness against disturbing torque and a variation of mechanical parameters.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>