title: Adaptive two-degree-of-freedom PI for speed control of permanent magnet synchronous motor based on fractional order GPC.
abstract: In this paper, an adaptive two-degree-of-freedom (2Dof) proportional-integral (PI) controller is proposed for the speed control of permanent magnet synchronous motor (PMSM). Firstly, an enhanced just-in-time learning technique consisting of two novel searching engines is presented to identify the model of the speed control system in a real-time manner. Secondly, a general formula is given to predict the future speed reference which is unavailable at the interval of two bus-communication cycles. Thirdly, the fractional order generalized predictive control (FOGPC) is introduced to improve the control performance of the servo drive system. Based on the identified model parameters and predicted speed reference, the optimal control law of FOGPC is derived. Finally, the designed 2Dof PI controller is auto-tuned by matching with the optimal control law. Simulations and real-time experimental results on the servo drive system of PMSM are provided to illustrate the effectiveness of the proposed strategy.
authors.affiliation: School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, China.
authors.forename: Wenjun
authors.initials: W
authors.lastname: Qiao
authors.affiliation: School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, China. Electronic address: xqtang1000@163.com.
authors.forename: Xiaoqi
authors.initials: X
authors.lastname: Tang
authors.affiliation: School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, China.
authors.forename: Shiqi
authors.initials: S
authors.lastname: Zheng
authors.affiliation: School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, China.
authors.forename: Yuanlong
authors.initials: Y
authors.lastname: Xie
authors.affiliation: School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, China.
authors.forename: Bao
authors.initials: B
authors.lastname: Song
keywords: Adaptive speed control; Fractional order generalized predictive control; Just-in-time learning; Permanent magnet synchronous motor; Two-degree-of-freedom PI