Publication

Digital control of a piezoelectric motor

2008
Student Projects

Résumé

A digital controller for piezoelectric motors was developed. The controller tunes the driving frequency in order to maximize the power transmitted to the motor. A maximum of power is absorbed when the resonant frequency of the mechanical and electrical part of the piezoelectric motor are equal. This frequency varies in the first place because of the applied force. The control method consists of comparing two values of the transmitted power, measured at different moments, and deciding as a function of the result whether the frequency should be increased or lowered. An analysis of the developed regulator is performed and suggestions for further development are given.

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https://infoscience.epfl.ch/entities/publication/a94000a5-cf3c-4f0d-bbaa-7242b7d66c93

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2008
Student Projects

Résumé

Source officielle

https://infoscience.epfl.ch/entities/publication/a94000a5-cf3c-4f0d-bbaa-7242b7d66c93

À propos de ce résultat

Concepts associés (32)

Electric motor

An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft. An electric generator is mechanically identical to an electric motor, but operates with a reversed flow of power, converting mechanical energy into electrical energy.

Power transmission

Power transmission is the movement of energy from its place of generation to a location where it is applied to perform useful work. Power is defined formally as units of energy per unit time. In SI units: Since the development of technology, transmission and storage systems have been of immense interest to technologists and technology users. Electric power transmission With the widespread establishment of electrical grids, power transmission is usually associated most with electric power transmission.

Frequency synthesizer

A frequency synthesizer is an electronic circuit that generates a range of frequencies from a single reference frequency. Frequency synthesizers are used in many modern devices such as radio receivers, televisions, mobile telephones, radiotelephones, walkie-talkies, CB radios, cable television converter boxes, satellite receivers, and GPS systems. A frequency synthesizer may use the techniques of frequency multiplication, frequency division, direct digital synthesis, frequency mixing, and phase-locked loops to generate its frequencies.

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Digital control of a piezoelectric motor

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