Direct decoupling control method of permanent magnet linear synchronous motor-driven suspension platform

• Main Authors: ZHANG GUIPING, SUN YIBIAO, ZHAO XIMEI, XIA JIAKUAN
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2012
• 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 relates to a direct decoupling control method of a permanent magnet linear synchronous motor (PMLSM)-driven suspension platform. An employed control system comprises a DSP, a rectification filter circuit, an IPM power conversion module, a current sensor, a grating ruler, a photoelectrical coupling isolation circuit, a crystal oscillation circuit, a power supply circuit and a PMLSM suspension platform. According to the control method provided in the invention, an actual position, an actual speed and current information of a PMLSM suspension platform are collected; calculation is carried out on the position, the speed and the current information, so that a current control signal of the PMLSM suspension platform is calculated; and a DSP generates corresponded six paths of PWM pulse signals and accurate positioning of the PMLSM suspension platform is controlled. According to the controlled method provided in the invention, independent decoupling modules like a feedback linearization module and the l