id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-973	Aboelhassan, M.	A Proportional Integral Derivative (PID) Feedback Control without a Subsidiary Speed Loop	2008	5	.pdf	application/pdf	1850	98	60	4: Block diagrams: proportional control term 3.3 Parallel PID Controllers The family of PID controllers is constructed from various combinations of the proportional, integral and derivative terms as required to meet specific performance requirements. A comparison (shown in (Fig. 6:)) of P, PD, PID control- lers with-without the subsidiary speed loop shows that P and PID controllers have zero error (y w� � �) in a steady state, but the PD-controller has non-zero error.	cache/ap-973.pdf	txt/ap-973.txt