Control method for power angle of precise rotation speed source in aviation

Abstract

The invention discloses an aerial high precision rotation rate source power angle controlling method, which comprises the following steps. Firstly, a triphase Hall position sensor arranged on a permasyn motor transmits the measured power angle triangle of the motor to a power angle comparer for comparison with the set power angle triangle 0; when the warp of the power angles is less than the set value, PI regulation output is 0; when the warp of the power angles is more than the set value, the power angle is controlled to approach the set power angle. Secondly, the steady operation power angle of the permasyn motor is set to be less than 90 degrees and more than 0 degree. Thirdly, when disturbance of loads increases suddenly, the motor slows down; the output voltage of an inverter is increased, and the motor works stably after several damped oscillations; when disturbance of loads is eliminated, the motor speeds up, and then works stably after several damped oscillations. By adopting closed-loop control of power angle, speed precision of the motor is higher than 0.5 rpm within the range of speeds of rotation from 50 rpm to 9000 rpm. In addition, the invention solves the problems of loss of synchronism and heating of the motor.

Description

technical field [0001] The invention relates to an aviation high-precision rotational speed source power angle control method. Background technique [0002] Rotational speed sensors are widely used in aviation and aerospace, but they must be calibrated before use, which requires high-precision driving devices to drive them. The tachogenerator is a speed sensor commonly used in the aviation field. There is a one-to-one correspondence between the speed and the output voltage. However, due to the inconsistent performance of each tachogenerator and tachometer, it needs to be calibrated one by one before the final assembly of the aircraft. The tachometer generator often has a tachometer, so it is required that the aviation high-precision speed source should be a standard "drive" and "signal" source, and it must have high speed regulation accuracy and a wide speed regulation range. [0003] According to the type of rotating speed source driving motor, there are three known scheme...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the deficiency of low rotational speed accuracy in the prior art, the present invention provides a high-precision rotational speed source power angle control method for aviation. By adopting power angle closed-loop control, the rotational speed accuracy can be improved, and at the same time, the problems of out-of-step and heat generation of the motor can be solved

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