Improving the Response of Electromagnetic Servo Relay Drives (ESRD) Using PID Comp. and Multi-level Voltages. Journal of Engineering and Sustainable Development, [S. l.], v. 16, n. 4, p. 206–219, 2012. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1236.. Acesso em: 3 jul. 2024.