Harmonic Detection Method Based on Particle Swarm Optimization and Simulated Annealing Algorithm of Electrohydraulic Servo System

Table 1

Results of harmonic detection based on PSO-SA and PSO algorithm.

Harmonic order	Harmonic amplitude	PSO-SA result	PSO result	Harmonic phase	PSO-SA result	PSO result
Fundamental	6.8	6.797	6.887	0.5	0.500	0.507
Second	5.5	5.498	5.534	0.4	0.402	0.382
Third	2.6	2.622	2.661	0.3	0.302	0.298
Fourth	1.1	1.098	1.039	0.1	0.096	0.106
Fifth	0.7	0.700	0.663	0.05	0.049	0.055
Sixth	0.2	0.197	0.184	−0.1	−0.100	−0.102