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The analysis of a stepper motor control system

100%

Kołota J. , Ober W. , Stępień S. , Stranz A.

tom No. 7

27-36

The objectives of this paper arc to present a laboratory kit for examination of the properties of a stepper motor. The paper thoroughly treats about the results of a research on proper control and functionality of the stepper motor and its power controller. Angular position, accuracy of positioning and angular velocity will be measured as determinants of correct operation in a full step and microstep setting.

The stepper motor control system in linear drive application

100%

Kołota J. , Stępień S. , Stranz A.

tom No. 8

47-59

The paper presents a linear drive application driven by a stepper motor. A description of the stepper motor work and control is given. The results of experiment as relationship between rotor angular velocity and input signal frequency are presented and discussed. Two cases: full-step and micro-step positioning arc examined. The measurements were made in wide frequency range (385,5 Hz-1029,3 Hz), and the results are illustrated in graphical way. This research shows advantages and disadvantages of the laboratory system as a linear drive of the stepping motor.

Infinite time horizon optimal current control of a stepper motor exploiting a finite element model

88%

Bernat J. , Stępień S. , Stranz A. , Szymański G. , Sykulski J. K.

tom Vol. 62, nr 4

835--841

An optimal control theory based method is presented aiming at minimizing the energy delivered from source and the power loss in a stepper motor circuit. A linear quadratic current regulator with an infinite time horizon is employed and its appropriateness for this type of a problem explained. With the purpose of improving the accuracy of the control system, the self and mutual inductances of windings are calculated using a finite element model. The numerically computed results are verified experimentally.