Evaluation and Design of Power Controller of Two-Axis Solar Tracking by PID and FL for a Photovoltaic Module

Table 3

Description of the FL controller linguistic rule set.

		MN	NE	Z	PO	MP
	MN	MN	MN	NE	NE	Z
	NE	MN	NE	NE	Z	PO
	Z	NE	NE	Z	PO	PO
	PO	NE	Z	PO	PO	MP
	MP	Z	PO	PO	MP	MP

MN is more-negative, NE is negative, Z is zero, PO is positive, and MP is more-positive in the domain of discourse.