Survey of Direct Transcription for Low-Thrust Space Trajectory Optimization with Applications

Table 4

Comparison of different grid points.

Case	Points	Number of iterations	CPU time	Maximum error of 𝑢
1	100	12	0.38 s	1.07𝑒−5
2	200	12	0.74 s	2.65𝑒−6
3	500	10	1.82 s	4.24𝑒−7
4	1000	13	4.64 s	1.06𝑒−7
5	2000	17	15.55 s	2.82𝑒−8
6	5000	15	65.04 s	9.16𝑒−9