. A, Mu S, Nakashima S, Tanaka K. PID Controller Design of Nonlinear System using a New Modified Particle Swarm Optimization with Time-Varying Constriction Coefficient. EMITTER Int’l J. of Engin. Technol. [Internet]. 2014Dec.1 [cited 2024May8];2(2):80-. Available from: https://emitter.pens.ac.id/index.php/emitter/article/view/28