Pole Placement-Based NMPC of Hammerstein Systems and Its Application to Grade Transition Control of Polypropylene

Table 1

Grade indices and transition constraints.

Grade	MI (g/10 min)	𝐸𝑡 (%)	𝑇 (K)	𝐶H2 (%)	𝐶m2/𝐶m (%)
A	2.7	—	343.15	0.050	—
B	39.0	—	343.15	0.330	—
C	10.0	2.4	343.15	0.236	1.99
A→B	[2.4,42.0]^𝑐	—	[341.15,345.15]	[0.02,0.35]	—
	[2.0,45.0]^𝑖	—	—	[−0.1,0.10]^Δ	—
B→C	[8.0,42.0]^𝑐	[0.0,2.5]^𝑐	[341.15,345.15]	[0.20,0.35]	[0.00,2.50]
	[6.0,45.0]^𝑖	[0.0,2.6]^𝑖	—	[−0.1,0.10]^Δ	[−0.1,0.10]^Δ