Le Thi Minh Tam, Nguyen Viet Ngu, Pham Duc Hung. REINFORCEMENT LEARNING–ASSISTED PPO–PD TRAJECTORY TRACKING CONTROL FOR A 6-DOF ROBOTIC MANIPULATOR: A COMPARATIVE SIMULATION WITH FEEDFORWARD PD. jst [Internet]. 2026Mar.10 [cited 2026Jun.11];49:88-4. Available from: https://jst.utehy.edu.vn/index.php/jst/article/view/855