https://www.researchgate.net/publication/275252016_Design_Analysis_and_Testing_of_a_Novel_Permanent_Magnet_Compulsator?_sg=GcIYgpp7LBw0pBAg8jpjcA9_6RIdQT7_BA7Nf11jtjp6LZ_eznOdoZGPvagE4bQuYQ8quiIjcCzZml_ryUXb3PrcP7jYtwTPsQ
