KR910017726A - Brushless Motor Drive - Google Patents

Abstract

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Description

Brushless Motor Drive

Since this is an open matter, no full text was included.

1 is a block diagram showing an electrical configuration, FIG. 2 is a side view showing the left side of a brushless motor in half section, FIG. 6 and FIG. 7 FIG. 2, FIG. 1 and FIG. It is a figure corresponding to 4 degrees, respectively.

Claims (6)

A brush reel squirrel having a stator having a plurality of phase stepper coils of a permanent magnet rotor having a plurality of poles, comprising: an oscillating means for generating a signal for synchronous rotation, and the number of magnetic poles in response to the rotation of the above-described rotor Coral generating means for generating an associated frequency signal and generating a phase detection signal of a specific phase, a drive circuit for sequentially conducting electricity to the above-described plurality of stager coils, and calculating a signal to be applied to calculate a current signal. A current signal generation circuit which generates and imparts this current signal to the above-described driving circuit, and when operating the current signal generation circuit, a dynamic-only signal from the above-mentioned oscillation means is given, and then a frequency from the signal generation means. Switch to give a signal, and the like, wherein the above-described current signal generating circuit is switched to a frequency signal Each time the phase detection signal from the above-described signal generation means is reset, the signal generation means is reset so as to correct the current phase. The above-described signal generation means is a magnetizing portion for frequency signals formed in multiple poles and a phase detection signal formed in reverse polarity thereof. A brushless motor drive device comprising: a permanent magnet comprising a magnet and a magnetic sensor for generating positive and negative output signals in response to each magnet of the permanent magnet. 2. A waveform shaping circuit according to claim 1, further comprising a waveform shaping circuit for outputting pulses by a signal output from the signal generating means, wherein the switching circuit is provided from the above-mentioned oscillating means by the magnitude of the pulse period output from the waveform shaping circuit. A brushless motor driving apparatus, characterized in that one of a frequency signal is selected from the same dedicated signal and the frequency generating means. 2. The brushless motor drive apparatus according to claim 1, wherein the magnetic sensor obtains the speed detection signals at equal intervals in response to an output signal from the magnetizing portion side of the frequency signal of the permanent magnet. A brushless clay having a permanent magnet rotor having a plurality of poles and a stator having a plurality of stator coils, comprising: generating means for generating a signal for synchronizing rotation, and a frequency signal that is related to the number of magnetic poles in response to the rotation of the rotor described above; Signal generating means for generating a phase detection signal at a specific phase and generating a phase detection signal; and a driving circuit for sequentially energizing the stator coils of the plurality of phases described above; and a current signal for generating a current signal by calculating an applied signal. And a current signal generating circuit for imparting to the above-described driving circuit and a synchronous rotation signal from the oscillating means when operating the current signal generating circuit, and then giving a frequency signal from the aforementioned signal generating means. And a switching circuit to be switched, and the above-described current signal generating circuit includes a frequency signal roll After switching, the signal generator is reset every time the phase detection signal from the signal generating means is applied to correct the current phase. The above-described signal generating means includes a magnetizing part for frequency signals in which the N pole and the S pole are formed in multiple poles, and S therein. Signal magnetized permanent magnet for phase detection formed by having a greater magnetization level than other poles and N poles, and a magnetic sensor that generates positive and negative output signals in response to each magnetized part of the permanent magnet, which outputs this magnetic sensor. A brushless motor drive device comprising a zero cross detection circuit for generating a zero cross signal at a zero cross point of a signal. 5. The motor control unit according to any one of claims 1 to 4, wherein the external control unit is configured to perform speed control on the motor drive unit including the oscillation unit, the signal generating unit, the driving circuit, the current signal, and the switching circuit. A brushless motor driving device, characterized in that configured to transmit a speed detection signal including a frequency signal and a phase detection signal to one signal for the external control unit. 6. A signal ship for speed detection signal, and a command ship for imparting a motor drive non-cutting speed speed signal by the speed detection signal from this signal ship, in the aforementioned external control section. A brushless motor drive device, wherein the brushless motor is connected by a power supply line for electric potential and a power supply line for ground supplying DC power to the motor control unit. ※ Note: The disclosure is based on the initial application.