Bias Magnetic Field of Stack Giant Magnetostrictive Actuator: Design, Analysis, and Optimization

Table 2

Optimization result of each PM length in different cases.

Initial unevenness factor	3.03%	2.24%	1.77%	1.45%	1.21%	1.15%
Optimized unevenness factor	2.98%	2.18%	1.72%	1.42%	1.19%	1.06%