Taking PM type(the permanent magnet model) SLPMU -025A motor as an example , this paper makes analytical calculation of its efficiency characteristics by the means of equivalent circuit.
As for the permanent magnet in the system, the (equivalent) current model is adopted.
对系统中的永磁体，采用了等效电流模型。
3
The cylindrical permanent magnet inside micro-robot was equivalent to magnetic dipole. The magnetic orientation equation based on magnetic dipole model was established.