Anang, N., Abdullah, L., Jamaludin, Z., Chiew, T., Maharof, M., Syed Salim, S. and Retas, Z. 2018. Analysis of Nonlinear PID Controller for Tracking Performance of Ball Screw Drive. Journal of Telecommunication, Electronic and Computer Engineering (JTEC). 10, 2-2 (May 2018), 67–71.