Adaptive Control of the Atmospheric Plasma Spray Process for Functionally Graded Thermal Barrier Coatings

Table 3

Values of the coefficients of the response functions for the mean temperature in equation (21). Here, “—” means the corresponding variable does not appear in the response function.

	Single powder injection using NiCrAlY			Single powder injection using ZrO2
Number of samples	100	200	300	100	200	300
Intercept ()	0.67	0.64	0.73	0.38	0.75	0.79
	−0.38	−0.47	−0.35	−0.43	−0.35	−0.47
	1.51	1.05	1.00	1.16	0.54	0.76
	0.19	0.47	0.23	0.56	0.42	0.18
	−0.72	−0.52	−0.57	—	—	—
	−0.21	−0.065	0.002	—	—	—
	—	—	—	−0.06	−0.36	−0.42
	—	—	—	0.19	−0.03	−0.06
	0.47	0.49	0.44	−0.23	0.26	0.27
	0.48	0.67	0.37	0.48	0.66	0.71
	−0.29	−0.012	0.007	—	—	—
	−0.34	−0.37	−0.27	—	—	—
	—	—	—	0.03	−0.06	0.06
	—	—	—	−0.30	−0.47	−0.56
	−0.13	−0.17	0.07	−0.07	−0.10	0.04
	0.31	0.37	0.41	—	—	—
	−0.13	−0.03	−0.12	—	—	—
	—	—	—	−0.02	0.24	0.23
	—	—	—	−0.40	−0.05	−0.10
	0.30	0.12	0.12	—	—	—
	0.32	0.53	0.33	—	—	—
	—	—	—	−0.009	−0.01	0.005
	—	—	—	0.21	0.43	0.55
	0.25	−0.09	0.12	—	—	—
	—	—	—	−0.03	−0.04	0.07
	−0.19	−0.38	−0.29	−0.12	−0.36	−0.39
	−1.08	−0.80	−0.87	−0.36	−0.38	−0.57
	−0.25	−0.56	−0.32	−0.43	−0.45	−0.35
	−0.14	−0.18	−0.19	—	—	—
	−0.03	−0.12	−0.19	—	—	—
	—	—	—	−0.31	−0.04	−0.13
	—	—	—	−0.17	−0.12	−0.19
Regression coefficient	0.97	0.97	0.97	0.97	0.97	0.97

The values in bold numbers mean that their p values (not listed here) are less than 0.05, signifying their high influence.