0011-4561 Eerror analysis in mathematical model of electromechanical actuator using Hamiltonian equations Eerror analysis in mathematical model of electromechanical actuator using Hamiltonian equations Burlikowski Wojciech author Kowalik Zygmunt author Department of Mechatronics, Faculty of Electrical Engineering, Silesian University of Technology, Gliwice Correspondence to: Wojciech Burlikowski Correspondence to: Zygmunt Kowalik 16 12 2015 Elektrotechnika Zeszyt 1-E (8) 2015 2015 119 128 Copyright © 2015 2015 <p style="text-align: justify;"> This paper presents a methodology of error analysis in a mathematical model of an electromechanical actuator using Hamiltonian equations in the description of energy conversion. As the basic quantity in numerical algorithms, the coenergy of magnetic field Ecm is employed. The reason for the application of coenergy as a state function is the explicitness of its value for a given set of state variables, resulting from neglecting eddy currents and hysteresis phenomenon in the model.</p>