초록 ▼

According to this invention, there is provided a motor control apparatus comprising a field weakening device for converting a velocity feedback signal obtained from the rotational speed of a motor into a secondary magnetic flux reference signal by using a field pattern, a field pattern selector for

According to this invention, there is provided a motor control apparatus comprising a field weakening device for converting a velocity feedback signal obtained from the rotational speed of a motor into a secondary magnetic flux reference signal by using a field pattern, a field pattern selector for comparing a predetermined signal with a q-axis torque current reference signal obtained on the basis of the secondary magnetic flux reference signal converted by the field weakening device, the velocity feedback signal, a velocity reference signal, and a torque reference signal, and outputting, on the basis of the comparison result, a control signal for switching the field pattern, and a field pattern storage section for switching, on the basis of the control signal output from said field pattern selector, the field pattern to be used in the field weakening device. Since the selector can switch the field pattern, an accurate torque output can be realized.

대표청구항 ▼

[ What is claimed is:] [1.] A motor control apparatus comprising:a field weakening device for converting a velocity feedback signal obtained from a rotational speed of a motor into a secondary magnetic flux reference signal by using a field pattern;a field pattern selector for comparing a predetermi

[ What is claimed is:] [1.] A motor control apparatus comprising:a field weakening device for converting a velocity feedback signal obtained from a rotational speed of a motor into a secondary magnetic flux reference signal by using a field pattern;a field pattern selector for comparing a predetermined signal with a q-axis torque current reference signal obtained on the basis of the secondary magnetic flux reference signal converted by said field weakening device, the velocity feedback signal, a velocity reference signal, and a torque reference signal, and outputting, on the basis of a comparison result, a control signal for switching the field pattern; anda field pattern storage section for switching, on the basis of the control signal output from said field pattern selector, the field pattern to be used in said field weakening device.