International Journal of Aerospace Engineering / 2021 / Article / Tab 7

Research Article

A Novel Self-Tuning Fuzzy Logic-Based PID Controllers for Two-Axis Gimbal Stabilization in a Missile Seeker

Table 7

The response of stabilization loops with conventional PID and fuzzy PID type controllers.

Missile rotation SpecificationElevation axisAzimuth axis
Conventional PIDFuzzy PID WITH 25 rule baseFuzzy PID WITH 49 rule baseConventional PIDFuzzy PID WITH 25 rule baseFuzzy PID WITH 49 rule base

5 deg/sRise time (sec)0.0680.20.20.0610.180.172
Overshoot (%)6.2008.100
Settling time (sec)2.40.330.310.410.230.2
Steady-state error0.002000.002500

10 deg/sRise time (sec)0.070.30.290.060.20.2
Overshoot (%)8.8009.3200
Settling time (sec)2.60.420.420.450.2870.282
Steady-state error0.0026000.00300

15 deg/sRise time (sec)0.10.330.30.06120.230.22
Overshoot (%)12.10014.5500
Settling time (sec)2.90.440.40.630.30.29
Steady-state error0.11000.11200

20 deg/sRise time (sec)0.120.350.330.0680.290.232
Overshoot (%)13.20015.100
Settling time (sec)3.10.470.4250.660.390.38
Steady-state error0.12000.1200

25 deg/sRise time (sec)0.160.380.360.080.330.29
Overshoot (%)16.60016.800
Settling time (sec)3.60.490.440.730.440.42
Steady-state error0.15000.1400

30 deg/sRise time (sec)0.250.430.380.120.360.34
Overshoot (%)20.40019.600
Settling time (sec)4.40.560.510.780.530.49
Steady-state error0.22000.200