Simulation-Based Optimal Speed Control of PMSM Drives Using Discrete LQR with Integral Action: Design, Analysis, and Robustness Validation

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Paponpen, K.; Kumpao, T.; Mujjalinvimut, E.; Sapaklom, T.; Konghirun, M.

ปีที่เผยแพร่ (ค.ศ.): 2025

Volume number: 23

Issue number: 3

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-105022474046&doi=10.37936%2Fecti-eec.2525233.260765&partnerID=40&md5=1f10485de071e55138ae1cdd3ca1366d

ภาษา: English-Great Britain (EN-GB)

ดูบนเว็บไซต์ของสำนักพิมพ์

บทคัดย่อ

This paper presents a discrete-time linear quadratic regulator (LQR) augmented with integral action for high-performance speed control of permanent-magnet synchronous motor (PMSM) drives. Integral augmentation is embedded directly into the discrete-time LQR framework to eliminate steady-state error in both reference-speed tracking and load disturbance rejection. A discrete-time Lyapunov function is derived, with real-time evaluation under parametric uncertainty, to guarantee asymptotic stability of the closed-loop system. A MATLAB m-file implementation enables fine-grained tuning of sampling rates and seamless translation to embedded architectures. Robustness is assessed via a comprehensive simulation suite comprising step changes in speed reference, load-torque disturbances, ±10% variations in stator resistance and inductance, and ±15% variations in rotor inertia and viscous friction. Head-to-head benchmarking against a cascaded PI controller and a standard discrete-time LQR (without integral action) under identical scenarios quantifies improvements in convergence rate, overshoot, and disturbance-rejection performance. Simulation results demonstrate rapid convergence, minimal overshoot, and zero steady-state error, confirming the proposed method as a reliable, implementation-ready alternative for robust PMSM speed control. © 2025 Author(s).

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