| Non-resonant linear motor adopt the laminated piezoelectric ceramics as actuator element, theyhave the characteristics of low voltage driver, direct output the large deformation, and avoid thestrongly nonlinear output performance caused by the resonance, On the purpose of high precision,Two new types of non-resonant linear motor were realized based on forced vibration of piezoelectricstack. In this thesis, experiments of piezoelectric stack, the construction of actuators, and the driversof motor was discussed. The main research achievements and work were summarized as follows.Current research of piezoelectric linear motors and the stage based on that were introduced. Theadvantage and disadvantage of resonant motors and non-resonant motors were discussed.The basic characteristics of piezoelectric stack were introduced. In order to get the foundation ofmotor design, about dynamic characteristic experiments of piezoelectric stack were carried out.A linear piezoelectric motor based on the inchworm principle was introduced, the workingmechanism of the motor was analyzed in details; the stator structure used three sets of the sameactuator and the clamping mechanism, and the slider structure used the principle of flexible hinge.Finally, the feasibility of the program was analyzed theoretically.Based on piezoelectric stacks of low driving voltage, high amplitude of displacement, largeoutput force, a new type of piezoelectric linear motor based on non-resonant vibration was introduced,which could solve the problem that the motor with single foot cannot be off the rail in thelow-frequency. The motor’s operation principle was analyzed in details, according to its workingprinciple, a prototype was been designed and manufactured. Finally, the assembly program wasanalyzed in details.Finally, the mechanical properties of the motor were tested. The experimental results showed thecharacteristics of the motor: wide operating band, simple structure, stable and reliable output, etc. |
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