Method for improving speed control robustness of adaptive terminal sliding mode of permanent magnet synchronous linear motor

• Main Authors: LUO PEI'EN, YIN ZHONGGANG, BAI CONG, ZHANG YANQING
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2024
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention discloses a method for improving speed control robustness of a self-adaptive terminal sliding mode of a permanent magnet synchronous linear motor. The method specifically comprises the following steps: establishing a model of the permanent magnet synchronous linear motor in a two-phase rotating coordinate system; a self-adaptive continuous fast terminal sliding mode speed controller is designed, so that the state reaches a sliding mode surface within finite time; a permanent magnet synchronous linear motor driving system based on a self-adaptive continuous fast terminal sliding mode speed controller is designed, so that the state reaches a sliding mode surface within finite time, and the speed control system can track the target speed within the finite time; the finite time convergence expansion state observer is constructed through a generalized superhelix, so that an estimation error is converged to zero in finite time, and a disturbance value obtained through estimation is fed forward and com