Vol.4, No 1, 2006pp. 35 - 44
UDC 62-523.2
HYSTERESIS COMPENSATION OF ELECTROMAGNETS
Tom Stroehla1, Oliver Radler1,
Ralf Volkert1, Veit Zöppig2
1TU Ilmenau, Faculty of Mechanical
Engineering, Germany
2Steinbeis-Transfer-Zentrum Mechatronik
Ilmenau, Germany
Abstract. Electromagnetic direct drives are charactized by a high
energy density and short cycle times but they show a strong non linear
behavior especially because of saturation and magnetic hysteresis. Different
applications use force and position control. To replace the force sensor
by a software solution can reduce costs and influences. For this purpose
a hysteresis compensation is required in order to preserve good accuracy.
This paper discusses the Jiles-Atherton model as one way to model hysteresis
effects and its inversion for the compensation of the hysteresis. The implementation
on a 16-bit Digital Signal Controller is presented. The presented work
was supported by the German Federal Ministry of Education and Research
BMBF (project number TRI 03I2916B).
Key Words: Electromagnet, Hysteresis Compensation, Jiles-Atherton
Model.
HISTEREZISNA KOMPENZACIJA ELEKTROMAGNETA
Direktni pogoni elektromagnetom se karakterišu velikom gustinom energije
i kratkim vremenskim intervalom ciklusa, ali i pokazuju izrazito nelinearno
ponašanje, naročito zbog zasićenja i magnetnog histerezisa. Za različite
primene koriste se sila i upravljanje položajem. Zamena senzora sile primenom
softvera može da smanji troškove i neželjena dejstva. Za ovu svrhu je neophodna
histerezisna kompenzacija da bi se zadržala dobra tačnost. Ovaj rad razmatra
model Jiles-Atherton-a kao jedan od načina za modeliranje efekata histerezisa
i njegovu inverziju za kompenzaciju histerezisa. Prikazana je implementacija
na 16-bitnom digitalnom signalnom kontroleru. Ovaj rad je urađen u okviru
projekta Saveznog ministarstva za obrazovanje i istraživanje Republike
Nemačke BMBF (broj projekta TRI 03I2916B).
Ključne reči: elektromagnet, histerezisna kompenzacija, model
Jiles-Atherton-a
