Control of Oscillation Amplitude of Oscillating Motors

摘要

Efficiency of reactive oscillating motors is low, so a problem of its expansion is topical. The dependence of permeance of a motor which pendulum moves along magnetic lines on coordinate of moving part is hyperbolical. Therefore rapidity of permeance λ(h) is the biggest when air gap between stator and pendulum is small. In this case power parameters of a motor are the best [1]. But when the pendulum is being moved closer to the stator and a load is changing, possibility for pendulum to impact the stator increases. That is the reason, why it is hard to achieve the optimal motor's power parameters, therefore an air gap must be increased. This paper deals with one of the possible simple ways of problem solving. The best position between pendulum and stator may be achieved when a motor is controlled. When a load changes rapidly an impact of pendulum to stator could be avoided by controlling a motor. The best way of control is positioning of oscillation amplitude [2], because then the determined size of controlled value is spatial coordinate of mechanical oscillations amplitude, which may be determined providing small air gap between pendulum and stator. Stabilization of oscillation amplitude can not ensure the desirable result due to possible displacement of a centre of oscillation [3-81.