Feedforward and Feedback Control Performance Assessment for Nonlinear Systems

Table 1

The obtained model coefficients and minimum variance by linear estimation method.

Terms	𝑏=3,𝑙=5			𝑏=5,𝑙=3
	Real values	Estimated values	Variances	Real values	Estimated values	Variances
1	1	1	0	1	1	0
𝜓0,1	1.60	1.4977	0.0118	1.60	1.3811	0.0172
𝜓0,2	1.76	1.4321	0.0396	1.76	1.2671	0.0466
𝜓0,3	×	×	×	1.54	1.0338	0.0801
𝜓0,4	×	×	×	1.05	0.6427	0.0825
𝜎^20	0.05	0.1208	0.0040	0.05	0.1712	0.0230
𝜓1,0	×	×	×	×	×	×
𝜓1,1	×	×	×	×	×	×
𝜓1,2	×	×	×	×	×	×
𝜓1,3	×	×	×	1	1.0005	0.0234
𝜓1,4	×	×	×	0.3	0.2849	0.0588
𝜎^21	0.1	0.0997	2.1861𝑒−004	0.1	0.0989	2.0217𝑒−004
𝜎^2mv	0.3329	0.7038	0.0919	0.6156	1.1688	0.2958