“Optimization of DC Motor PID Control Using the Ziegler–Nichols Method With Encoder and Op-Amp (Lm324): Optimasi Kontrol PID Motor DC Menggunakan Metode Ziegler–Nichols Dengan Encoder Dan Op-Amp (Lm324)”. 2025. Academia Open 10 (2): 10.21070/acopen.10.2025.12875. https://doi.org/10.21070/acopen.10.2025.12875.