A method for trimming the mean value of actual engine speed and its control system

A technology of engine speed and actual speed, applied in engine control, machine/engine, governor, etc., can solve the problem of inconsistent engine speed, and achieve the effect of improving noise reduction quality, reducing speed deviation, and reducing aircraft noise

Active Publication Date: 2020-10-20
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a trimming method that can effectively solve the problem of inconsistent engine speeds in the prior art at the same throttle angle.

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  • A method for trimming the mean value of actual engine speed and its control system

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0019] see figure 1 , the engine actual speed mean value trim control system of the present invention comprises a speed mean value trimming device and several groups of engines, each group of engines is connected with an electronic controller, wherein the actual speed output ends of the several groups of engines are connected to the speed mean value trimming device, The speed average trim unit feedback output is connected to the electronic controller input of each engine. Wherein, the engine is used to receive the fuel flow signal of the electronic controller and generate the engine speed signal. The electronic controller is used to control the engine fuel flow according to the engine speed control instruction, and is also used to generate the engine fuel flow signal.

[0020] The speed mean value trimming device is connected with each engine, and is used t...

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Abstract

The invention belongs to the technical field of engine rotation speed control, and particularly relates to an engine actual rotation speed mean value balancing method and a control system thereof. Theengine actual rotation speed mean value balancing control system comprises a rotation speed mean value balancing device and a plurality groups of engines, and an electronic controller used for controlling the rotation speed of the corresponding engine is connected to each group of the engine; and the actual rotation speed output ends of the engines are connected to the rotation speed mean value balancing device, and the feedback output end of the rotation speed mean value balancing device is connected to the electronic controller input ends of all the engines. According to the engine actual rotation speed mean value balancing method and the control system thereof, the rotation speed of the engines is adjusted through the rotation speed mean value balancing method, effective compensation control is conducted on the rotation speed of each engine, the rotation speed deviation among the engines is reduced, therefore, the rotation speed of the engines is same and equal to the mean value ofthe actual rotation speed of the engines in the required flying stage, and then the noise reduction quality of the engines and an airplane is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of engine rotational speed control, and in particular relates to a method and a control system for trimming the average value of the actual rotational speed of the engine. Background technique [0002] When the aircraft has the same throttle stick angle, there is a deviation in the speed of the engines, mainly because there are errors between the throttle sticks and between the engines, so that there is a certain deviation in the engine speed under the condition of the same throttle stick angle, and the speed is inconsistent. [0003] Engine actual speed mean value trimming means that all engines on the aircraft are controlled to have the same engine speed under the same throttle angle through the method of actual speed mean value trimming, which is equal to the mean value of the actual engine speed. The conventional engine speed trim control method is to control the engine speed to be consistent through the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D31/00
CPCF02D31/001
Inventor 姜哲吕其明徐嫄乐
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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