Research On The Method Of Thermal Error Compensation And Develop The Experiment System For Giant Magnetostrictive Actuator

Giant Magnetostrictive Material (GMM) is new kind of smart material, which has the advantage of long travel range, low voltage drive, high power and large load capacity, etc. It has a promising prospect in the fields of precision finishing machining, vibration control, fluid control, underwater transducer, etc. This dissertation emphasizes on axial moving type Giant Magnetostrictive Actuator (GMA), studies the working characteristics of GMM, the size characteristics of solenoid coil, the static output of actuator and the problem of the thermal deformation. A general experiment table, which offers good and universal guidance for design and application of GMA, is successfully developed. This dissertation includes six chapters.In the first chapter, some aspects of GMM, such as the development background, the advantages compared with other materials, the research situation of application, are presented firstly; the research situation of thermal error compensation in GMA is introduced secondly; according to the problems and the situation analyzed above, the project significance and main contents of the research are provided.In the second chapter, the theory of elongation and the basic properties of GMM are introduced; the magnetic and power characteristics of solenoid coil are analyzed, which provide the evidence for optimum design; at last, the static and dynamic output model of GMA are provided.In the third chapter, the problem of thermal deformation in GMA is analyzed; secondly, the technology of semiconductor refrigeration is researched; a new prototype of temperature control system for thermal compensation in GMA, using the technology of semiconductor refrigeration, is successfully designed.In the fourth chapter, the whole frame of experiment system is build up, having hardware module and software module; the regulations for data management are introduced; finally, a demonstration of experiment is given.In the fifth chapter, the thermal error output of GMA in long time working are measured; the effect of temperature control using semiconductor refrigeration is measured; the influences of pre-stress and temperature are measured in static output experiment; the dynamic output characteristics are measured through experiment.In the sixth chapter, main work in the dissertation are summarized, and the further research work will be done is put forward.