Parameter Identification of ARX Models Based on Modified Momentum Gradient Descent Algorithm

Table 1

The parameter estimates and the estimation errors (SG).

5	0.0090	−0.1416	−0.0195	0.3406	0.1128	85.7714
10	0.0112	−0.2101	0.0087	0.3109	0.1947	78.5886
50	−0.0030	−0.2880	0.0523	0.2917	0.2298	71.2120
100	−0.0029	−0.3280	0.0698	0.2794	0.2583	67.8208
150	−0.0065	−0.3443	0.0789	0.2750	0.2601	66.4253
200	−0.0079	−0.3484	0.0822	0.2759	0.2587	66.0179
True value	0.3000	−0.7000	0.5000	0.2500	0.1700