SU382136A1 - DEVICE FOR SMOOTH INSTALLATION OF THE PHASE POSITION OF A SYNCHRONOUS MOTOR ROTOR - Google Patents

Description

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11: Termination relates to the technique of idiomagnetic recording and can be used in automatic control systems for accurate phasing of synchropic motors.

The known devices for smoothly adjusting the rotor phase position of a synchronous motor include shapers of reference and personnel pulses, a switching circuit, a block of formation of prohibitive pulses, an engine speed sensor, power amplifiers, a phase splitter, a phase modulator unit with damping systems and a horizontal string, a reference pulse frequency converter, and match scheme.

However, these devices are characterized by insufficient phasing accuracy and installation time.

To reduce the installation time and implement the required control law, the proposed device is equipped with a multivibrator, the input of which is connected to the output of the coincidence circuit, and the output - to the input of the frequency converter, with one input of the coincidence circuit connected to the output of the pulse driver, and the other input to the output of the forming unit prohibiting impulses.

The drawing shows a block diagram of the device described, containing a driver / reference signals, a MIHI 2 scheme, a m.plnvibrator, irobrav.uvagol / frequency, an engine 5, a block 6 amplify; nd power, an overheat of 7 phases, a module 8 modulator phases, damping system 9, JO system

line tracking sensor, engine speed sensor 11, switching circuit 12, prohibitory impulse generation unit 13, onframe ripper 14 for personnel impulses and framing pulse generating unit 15.

The device works as follows. The reference signal, obtained by converting (frequency) the line frequency, comes from the driver / input of the coincidence circuit 2 (logical circuit "I") and then to the multivibrator 3, which is synchronized with the reference pulses from the driver. The output signal from multivibrator 3 in converter 4 is converted to the frequency required to power the engine of the head assembly 5. PN 11 e to the engine enters through block b, splitter 7 and block cS. The modulator unit is generated by signals from the output of the damping and lower case systems. Signal.

controlling the phase position of the rotor of the engine, is removed from sensor 11 and through switching circuit 12 enters the input of block 13, the second input of which receives signals from the driver 14. Since the output of block 13 is connected to the second input of the coincidence circuit 2, the pulse of the multivibrator 3 is left without clock pulses, and the frequency of the pulses generated by the multivibrator is equal to its natural frequency. Due to this, the average power frequency of the engine is slightly changed, which causes a change in the phase of the engine supply and, therefore, the phase position of the engine rotor. This leads to a decrease in the pulse duration of the imaging unit 14, which reduces the time during which the pulses are not fed to the multivibrator. The detuning of the average power frequency and the installation speed of the phase position of the engine rotor are accomplished. At a certain temporary position, the reference frame pulses of the speed sensor coincidence circuit 2 turn out to be open polost. The installation process is quenched, and the multivibrator is synchronized with unpowered pulses without interruptions, which corresponds to the condition of the motor sigpal, hypotype with supporting pulses and spacing with the necessary personnel pulses. During playback, when the need for success is required (the playback of a reproducible television image by frame, the speed transmitter is replaced by the help npii switch 1, it plays 12 frame reps with its frame impulses

15. The measurement of the speed of stabilization of the rotor phase of the engine depends on the duration of the inhibiting impulse arriving at the input of the coincidence circuit 2 from the anti-bridging pulse forming unit 13.

Subject invention

A device for smoothly adjusting the phase position of the rotor of a synchronous motor, contains its drivers of reference and personnel pulses from a reproduced television image, a switching circuit and a blocking imiuls generator, whose inputs are connected with the outputs of the formation of personnel pulses and a switching circuit, the engine speed sensor, in the middle of the power supply which includes a power amplifier unit, a phase splitter, a phase modulator unit with damping and line tracking systems, a frequency converter The reference pulses are a coincidence circuit, characterized in that, in order to reduce the installation time 1 of implementing the required control law, it is equipped with a multivibrator, the input of which is connected to the output of the coincidence circuit, and the output is connected to the input of the frequency converter, and one current of the coincidence circuit The keys are connected to the exit of the formation of supporting imiuls, and the other entrance is connected to the input of the block of the shape of the support block.

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