Temperature Control via Affine Nonlinear Systems for Intermediate Point of Supercritical Once-Through Boiler Units

Table 4

Traditional PID control performance.

Load proportion	𝑅𝑠=2666.89 kJ/kg			With feed-water flow
	𝐷𝑧𝑓 (kg/s)	𝑀𝐷 (%)	𝑡𝑠1 (s)	𝜎𝐻 (kJ/kg)	𝑡𝑠2 (s)
100%	486	19.4	40	−29	20
90%	437.4	21.8	40	−30	20
80%	388.8	25.3	40	−31	20
70%	340.2	29	50	−34	30
60%	291.6	32.8	55	−37.4	30
50%	243	39.7	76	−36.9	35
40%	194.4	46.3	84	−39	40
30%	145.8	58.7	133	−40.4	45