| Electromagnetic piezoelectric hybrid drive motor is a special type of hybrid drive motor,which can achieve multi degree of freedom motion through electromagnetic and piezoelectric hybrid drive.It is more convenient and superior in performance than previous single degree of freedom motors that achieve multi degree of freedom motion through series and parallel connection,and has a wide range of application prospects.The electromagnetic piezoelectric hybrid drive motor consists of two parts: external electromagnetic drive and internal piezoelectric drive.Due to its unique structure,it is very important to study the magnetic field dynamics and piezoelectric coupling field dynamics of the motor.Meanwhile,due to the complexity of the working environment of hybrid drive motors,their heat dissipation performance is poor.Excessive temperature of the motor will cause the insulation layer of the stator winding and silicon steel sheet to fail,permanent loss of excitation of the permanent magnet,depolarization of the piezoelectric ceramic sheet,and other hazards,causing serious damage to the motor body and affecting its performance.Therefore,the analysis of temperature field characteristics is an important aspect of studying motor performance indicators.On the basis of analyzing the magnetic field and piezoelectric coupling field dynamics of electromagnetic and piezoelectric hybrid drive motors,this article conducts a detailed study on their loss and temperature field characteristics.The main research content of this article is as follows:(1)Overview of the basic theory of multiple physical fields for electromagnetic and piezoelectric hybrid drive motors.This includes the basic theories of electromagnetic fields,piezoelectric coupled fields,temperature fields,and multi physical field coupling.(2)Introduce the structure and operating principle of an electromagnetic piezoelectric hybrid drive motor.Based on Solidworks software,an internal piezoelectric driving model and an external electromagnetic driving model of the motor were established.The composition of each part of the motor was introduced,and the driving principle of the motor was described.(3)Analyze the dynamic characteristics of an electromagnetic piezoelectric hybrid drive motor.Analyze the micro motion of traveling waves generated by the piezoelectric stator and the driving force of the piezoelectric stator on the rotor for the internal piezoelectric drive model.Analyze and calculate the magnetic circuit of the external electromagnetic drive model.Using Ansys and Maxwell finite element simulation software,the dynamic characteristics of the piezoelectric coupled field and magnetic field of the motor were simulated,analyzed and calculated.(4)Analyze the loss and temperature field characteristics of electromagnetic and piezoelectric hybrid drive motors.Calculate the internal piezoelectric loss and external electromagnetic loss of the motor through theory and simulation.The three-dimensional geometric modeling of the temperature field is established by Solidworks software,and the temperature field of the motor is simulated by ANSYS Workbench finite element simulation software to study the characteristics of the temperature field of the motor.(5)Build an experimental testing platform for electromagnetic and piezoelectric hybrid drive motors,and verify the dynamic output performance and temperature field characteristics of the motors through experiments.This article delves into the dynamic and temperature field characteristics of electromagnetic piezoelectric hybrid drive motors,providing a strong basis for further optimizing and adjusting motor parameters,improving motor output performance,and reducing motor temperature rise. |
