Performance enhancement of PMSM using a hybridizing of nonlinear backstepping control and an optimized linear quadratic regulatorDjaloul Karboua، Belgacem Toual، Mohamed I. Mosaad، Chouiha Youcef، Abdelkader Azzeddine Bengharbi، Shimaa Aly HussienEnergy Exploration & Exploitationالمجلّد 43، (6)، الصفحات 2637-26642025مقال وصول مفتوح 6