Guagchinga, F., Calvopiña, P., Alpúsig, S. and Cajas Buenaño, M. 2021. PID control of auto-regulated and integrated processes tuned using the lambda method: Array. Perspectives Scientific Journal . 3, 1 (Jan. 2021), 43–49. DOI:https://doi.org/10.47187/perspectivas.vol3iss1.pp43-49.2021.