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Design And Studies On Novel Double Rotors Translational Meshing Motor

Posted on:2011-09-21Degree:DoctorType:Dissertation
Country:ChinaCandidate:R H LiFull Text:PDF
GTID:1102360308961141Subject:Mechanical and electrical engineering
Abstract/Summary:PDF Full Text Request
Translation meshing motor (TMM) is a new motor which integrates reduction gears into the drive and translates electric energy into mechanical energy through the reluctance variety between the stator and the rotor. The rotor of this new motor is constrained to move around the stator by circle translation with a parallelogram linkage, and drives the cycloid machine to output big torque.This type of motor has better acceleration performance through magnetic poles to drive meshing gears outputing torque directly, and because of running stability and less friction of meshing gears, the motor has higher efficiency and longer life. For improving the existing translational meshing motor, a new type of double rotor translational meshing motor(DRTMM) has been designed, manufactured and experimented in this dissertation. Profound study is involved in several aspects, including basic operation principle, design features, magnetic field distribution and dynamic performance characteristics.In this dissertation, the features of construction and principle of operation of TMM are discussed in details, and TMM can be divided into three partitions which including poles structure, translational constraint mechanism and interior meshing gear design. More useful structures deduced from the three partitions are introduced and compared. Finally, one TMM construction consists of double rotors, eccentric shafts constraint structure and involutes interior meshing gear are concluded and named double rotors translational meshing motor respectively.The magnetic equivalent circuit model is founded aiming at the special structure of the double rotors translational motor. The influences of gap length, poles and windings volume on motor performance are discussed and the rational model is deduced about them based on magnetic equivalent circuit model. The optimum method is firstly proposed in this paper, and this method can be the theoretical guidance for design of TMM.Three dimension finite element method of double rotors translational meshing motor is founded, and then Magnetic field distribution and magnetic circuit characteristics are analyzed primarily. So the flux linkages and magnetic force at different rotor angles are calculated which are provided for nonlinear magnetization data. The nonlinear dynamic analysis model is established by the nonlinear magnetization data.For required of real-time control of the DTRMM, the dynamic torque characteristics is analyzed by analytical method, so the relation model between output torque and input voltage is proposed. The control method of constant output torque is proposed firstly for DTRMM. The simulation analysis of dynamic and control testified that the proposed control method can decrease the torque ripple and vibration.Above the theoretical analysis and optimum design, two prototypes of DTRMM are designed and manufactured; meanwhile, the control and driver systems with the functions of position detection and current measurement are developed. The prototype loading experiments has proved that the designed DRTMM has more output torque, efficiency and higher operation stability. The designed DTRMM can give one typification structure of translation meshing motor.
Keywords/Search Tags:double rotors translational motor, magnetic equivalent circuit method, dynamic state characteristics, finite element method, constant torque control
PDF Full Text Request
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