Control Method of Aeronautical AC Starter/Generator Dynamic Start Based on Second-Order Linear ADRC

Abstract

The present invention relates to a second order linear ADRC based aviation alternating current startup / generator dynamic startup control method. Reasonable parameters are selected for different starting revolving speeds, a smooth startup function with a revolving speed of a motor is realized, and a damage brought to an aviation engine by the case that a large volume of high-temperature aviation kerosene in an engine oil tube cannot be exported in time when the startup is failed is decreased; and the use of a classic PID regulator is omitted, and side effects of slow response of a closed-loop system, easiness for generating oscillation, saturated controlled quantity and the like which are caused by error integration feedback are avoided.

Description

technical field [0001] The invention belongs to the technical field of AC motor drive control, in particular to a second-order linear ADRC-based dynamic start control method for an aviation AC starter / generator, which is a control method for starting an aviation AC starter / generator when the rotational speed is not zero , using the second-order linear active disturbance rejection controller (ADRC) to realize the control method of system regulation, Background technique [0002] In the aviation high-power AC power system, the integrated starting / generating technology can not only save the special starting mechanism, effectively reduce the weight of the aircraft, improve the reliability, but also facilitate the integration of the generator and the engine, which has obvious advantages. Globalization has become an inevitable trend of aircraft power system. [0003] The relevant research work on the starting control strategy of aviation AC motors has been carried out in China. T...

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Problems solved by technology

[0005] The principle of aviation AC starter / generator system is as follows: figure 1 As shown, the current dynamic startup still faces the following problems: due to the convenience of parameter setting and other reasons, the regulators used in the control system are all classic PID regulators. Due to the application of error integral feedback, the closed-loop system is often unresponsive and prone to oscillations Side effects such as saturation and control quantity saturation; the starting system has a large load inertia and frictional resistance, and the motor decelerates with a large acceleration before dynamic starting. If the classic PID regulator is still used for adjustment at this time, integral saturation and response lag are prone to occur. This increases the error between the actual running state of the motor and the given working state, causing current oscillations in the dynamic starting process, and in severe cases, it will lead to starting failure.

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