Continuous-Thrust Station-Keeping of Cis-Lunar Orbits Using Optimal Sliding Mode Control with Practical Constraints

Figure 8

The station-keeping for the nominal orbits with the SRP as the perturbation.

(a) 2 : 1 DRO with LQR controller

(b) 2 : 1 DRO with OSMC controller

(c) 9 : 2 NRHO with LQR controller

(d) 9 : 2 NRHO with OSMC controller

(e) Halo (3) with LQR controller

(f) Halo (3) with OSMC controller