Open AccessInvestigations of applications of smart materials and methods in fluid valves and drives
Author(s) -
Andrzej Milecki,
Dominik Rybarczyk
Publication year - 2019
Publication title -
journal of machine engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.588
H-Index - 7
eISSN - 2391-8071
pISSN - 1895-7595
DOI - 10.5604/01.3001.0013.6235
Subject(s) - electrohydraulic servo valve , actuator , rotary actuator , servo , valve actuator , nozzle , servomotor , engineering , pneumatic actuator , flow control valve , torque , mechanical engineering , control valves , control engineering , control theory (sociology) , computer science , control (management) , electrical engineering , physics , artificial intelligence , thermodynamics
In the paper the investigations performed at the Division of Mechtronic Devices at Poznan University of Technology in the area of application of both: smart materials in electro-hydraulic and electro-pneumatic valves, and new methods to control of hydraulic servo drives, are presented. In a first part the piezo bender actuator is shortly described and its application in servo valve is proposed. This actuator replaced the torque motor in the available on the market servo valve. The new valve simulation model is proposed. The simulation and investigations results of the servo valve with the piezo bending actuator are included. In the next part of the paper the application of piezo tube actuator in flapper-nozzle pneumatic valve is described. The test stand and investigations results are presented. Later, in the article, the Model Following Control (MFC) and Fractional order Control (FoC) methods are described. Their application in control of electrohydraulic servo drive is proposed. Some investigations results are included in the paper, showing the advantages of those control methods.