Induction Motor Magnetic Suspension Spherical Mechanism And Finite Element Analysis

With the quick development of robotic technology, information technology, sensor and detection technology, etc. innovative and high technology, the ordinary motor-driven movement equipment and precise manipulator arm can’t have satisfied the requirements of the development of technology in the workplace where need to meet the high speed, pinpoint accuracy and complex trajectory, etc.. The generation and application of electromagnetic levitation technology was the main solution of these problems. Nowadays, magnetic levitation technology have obtained in-depth research and far-ranging application, while as actuating device in the aspect of maglev motor, single degree of freedom, two degrees of freedom and multi-degrees of freedom maglev motor have quite mature technical assistance for satisfy various kinds of needs. These maglev motors were applied to pan-tilt actuator, magnetic suspension spherical joint and maglev motor-driven pump, etc.. Multi-degrees of freedom magnetic suspension spherical induction motor has the same characteristics of contactless, no attrition and no lubrication as other maglev motors, and it also could enhance efficiency of operations, precision and dynamic property. But the magnetic suspension spherical induction motor was provided with simple composition that could be fabricated easily and high steady-state behavior and efficiency that could achieve continuous operation. The magnetic suspension spherical induction motor possess extensive application worth in multi-degrees of freedom motor-driven actuator systems.With the research of cage asynchronous motor technology and maglev spherical motor technology, space magnetic field dynamics analysis and electromagnet energy transformation principles also are combined, this paper presents a new type of magnetic suspension spherical induction motor. This type of maglev spherical induction motor was the complex mechanical-electrical integration of integrated system which was provided with simple structure, little volume and light weight, and it could be used in small spaces. In addition, this type of motor has the characteristics of good mechanical property, high stability, and high control precision which could obtain various kinds precise movement trail. The main contribution of this dissertation can be discussed as follows:1. Introducing the development, current research, applications and trend of the maglev spherical motors’ development with multi-degree of freedom, coming up with the meaning and research direction for the magnetic suspension spherical induction motor;2. Establishing the magnetic field mechanics dynamic model for the magnetic suspension spherical induction motor, using the rotate magnetic field energy transformation principles, this paper inferred the induction matrix and flux linkage which obtained the torque and electromagnetic force of the magnetic suspension spherical induction motor;3. Designing the structure of the whole magnetic suspension spherical induction motor, stator and rotor, also giving the check computation of the performance with the parameters of the magnetic suspension spherical induction motor.4. Designing the structure of stator and rotor of the magnetic suspension spherical induction motor, using ANSYS software to give the finite-element analysis for the electromagnetic field of this structure. By means of the finite-element analysis of the electromagnetic field, the relation of between suspension force, electromagnetic torque, magnetic flux density and control parameters;5. Designing the test platform and detection and sensor equipment of displacement and rotate speed, using the advanced gyroscope position sensor to provide the precise displacement of the rotor to control system.