Title :
Experimental Study on Dynamic Characteristics of a Novel Low Inertia Rotating Electromagnet
Author :
Bin, Meng ; Jian, Ruan ; Lizhong, Lu ; Wei, Nie
Author_Institution :
Key Lab. of Special Purpose Equip. & Adv. Process. Technol., Zhejiang Univ. of Technol., Hangzhou, China
Abstract :
In order to improve dynamic characteristics of electro-mechanical converter of electro-hydraulic digital valve, a novel low inertia rotating electromagnet with coreless rotor is proposed in this paper. The working principle of traditional multi-pole rotating electromagnet is discussed in detail firstly. Then the structure and magnetic circuit of low inertia rotating electromagnet is present. For the purpose of increasing the magnetic flux density of the air-gap, Nd-Fe-B and permalloy are used as permanent magnet and soft magnetic material, respectively. Dynamic response experiment is performed and results illustrate the low inertia rotating electromagnet has good dynamic characteristic which possess capability of fast rise time and smooth recurrence of sinusoidal input signal.
Keywords :
Permalloy; boron alloys; direct digital control; electrohydraulic control equipment; hydraulic systems; magnetic circuits; magnetic flux; neodymium alloys; permanent magnet machines; permanent magnets; pneumatic actuators; soft magnetic materials; valves; NdFeB; NiFe; coreless rotor; dynamic characteristics; dynamic response experiment; electro-hydraulic digital valve; electro-mechanical converter; low inertia rotating electromagnet; magnetic circuit; magnetic flux density; permalloy; permanent magnet; soft magnetic material; Digital control; Digital signal processing; Electromagnets; Laboratories; Presses; Process control; Valves; dynamic characteristics; low inertia; rotating electromagnet;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.1266
