A push rod stall protection control method

Abstract

The invention belongs to a flight control technology and provides a push rod stalling protection control method. The push rod stalling protection control method comprises the following steps: calculating a final rod displacement instruction of push rod stalling protection, wherein the final rod displacement instruction is zero during initialization and is resolved by a push rod instruction during real-time operation, the output displacement instruction is equal to the push rod instruction plus the upper limit of the velocity threshold if the push rod instruction minus the current rod displacement instruction is more than the upper limit of a preset velocity threshold, the output instruction is equal to an input instruction plus the lower limit of the velocity threshold if the push rod instruction minus the current rod displacement instruction is less than the lower limit of the preset velocity threshold, and the final rod displacement instruction is equal to the push rod instruction under other conditions; finally, outputting the final rod displacement instruction if the final rod displacement does not exceed the preset upper limit and lower limit values, outputting the upper limit value if the final rod displacement exceeds the upper limit value, and outputting the lower limiting value if the final rod displacement exceeds the lower limit value.

Description

technical field [0001] The invention belongs to the flight control technology, in particular to a push rod stall protection control method. Background technique [0002] The aircraft stall is because the angle of attack of the aircraft exceeds the critical angle of attack, and severe airflow separation occurs on the lifting surface of the wing, resulting in a sudden drop in lift and a sharp increase in resistance. The specific manifestation is that the aircraft loses control and automatically enters a roll or swing state. , the altitude dropped sharply, causing the plane to crash. Since the birth of aircraft, preventing stalls has always been a key issue in aircraft flight safety; from an aerodynamic point of view, an aircraft with good stall characteristics will have an obvious vibration prompt when approaching a stall, or the lift and rudder effect of the aircraft after a stall. There will be no loss so quickly that it will be difficult to recover from the stall. However...

AI Technical Summary

Problems solved by technology

However, general pilots seldom receive stall training, tend to ignore the stall warning information, seldom take correct control actions when receiving the stall warning, and cannot make the aircraft leave the dangerous stall boundary in time

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