Dynamics and temperature field analysis of piezoelectric driven three-stator multi-degree-of-freedom ultrasonic motor

Temperature Characteristic Analysis of Electromagnetic Piezoelectric Hybrid Drive Motor

“…Zheng Li et al studied the temperature rise characteristics of the ultrasonic motors by establishing transient temperature field simulation. The results show that the temperature rise curve increases exponentially with time at the beginning, and then keeps stable with time as the motor enters the thermal temperature state [3]. Based on the fact that the performance of the ultrasonic motor is decided by the tribological characteristics of the contact interface, and the surrounding environment has a great impact on its characteristics, Xiaoliang Liu and others systematically researched the effect of temperature on the energy conversion of the motor with new friction materials for the first time.…”

“…At the same time, deduce the stator slider to make the stator rise and contact the rotor [19]. There are friction materials on the inner of the rotor, which can increase the driving force of the rotor and reduce the friction loss of the stator and rotor [3]. Ball bearings are used to support the rotor to decrease the gravity of the rotor itself and reduce the loss of the motor [20].…”

“…Dielectric loss includes dielectric loss and dielectric loss of ceramic structure. Structural damping loss is [3]:…”

“…where, E is the elastic modulus, s is the strain vector, and χ is the viscous damping coefficient [3].…”

“…However, due to the particularity of the structure of the hybrid drive motor, each link will bring more energy loss in the operation process. A considerable part of these losses is stored in the body with heat and transmitted according to its law, resulting in an increase in body temperature and affecting its working characteristics [3]. In the situation of a high-precision position servo, the change of motor characteristics will make it difficult to ensure accuracy.…”