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Engine numerical control system using stepping motor

A stepping motor and numerical control system technology, applied in the direction of machines/engines, engine components, charging systems, etc., can solve the problem of inaccurate control of engine fuel flow, poor performance of fuel flow control, poor performance of pump regulators, etc. problems, to achieve the effect of solving unsatisfactory engine performance, reducing precision problems and improving reliability

Pending Publication Date: 2021-12-28
中国航发控制系统研究所
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AI Technical Summary

Problems solved by technology

[0002] At present, the engine numerical control system mainly uses the electro-hydraulic servo valve as the actuator to control the fuel flow; but when the electro-hydraulic servo valve is polluted by fuel or the performance of the pump regulator is deteriorated due to long working hours, it is easy to cause poor fuel flow control performance Even out of control, that is, there is a temperature drift characteristic, and the fuel flow of the engine cannot be accurately controlled, resulting in the potential risk of engine overheating and overrunning

Method used

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  • Engine numerical control system using stepping motor

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0015] Such as figure 1 As shown: In order to effectively avoid the influence of the sampling accuracy deviation of the oil needle RDVT sensor on the control quality and improve the reliability of the engine numerical control system, the present invention includes the engine numerical control system body, the actuator of the fuel pump regulator in the engine numerical control system body Including stepper motor;

[0016] When the fuel flow is controlled by the stepper motor, the given step number Step of the stepper motor is determined by the given amount of fuel. Oil needle position Lf, and determine the current step number step of the stepper motor according to the current oil needle position Lf;

[0017] Determine the step difference between the given step number Step and the current step number Step, and correct the rotation steps of the stepping motor ac...

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Abstract

The invention relates to an engine numerical control system using a stepping motor. The engine numerical control system comprises an engine numerical control system body, an executing mechanism of a fuel pump regulator in the engine numerical control system body comprises the stepping motor, when fuel flow control is carried out through the stepping motor, the given step number Step of the stepping motor is determined through the fuel given quantity, when the rotating step number of the stepping motor is consistent with the given step number Step, the current oil needle position Lf is detected through an RVDT sensor, the current step number Step of the stepping motor is determined according to the current oil needle position Lf, and a step number difference value between the given step number Step and the current step number Step is determined, and the rotating step number of the stepping motor is corrected according to the step number difference value. According to the engine numerical control system, the influence of the sampling precision deviation of the oil needle RDVT sensor on the control quality can be effectively avoided, and the reliability of an engine numerical control system is improved.

Description

technical field [0001] The invention relates to an engine numerical control system, in particular to an engine numerical control system using a stepping motor. Background technique [0002] At present, the engine numerical control system mainly uses the electro-hydraulic servo valve as the actuator to control the fuel flow; but when the electro-hydraulic servo valve is polluted by fuel or the performance of the pump regulator is deteriorated due to long working hours, it is easy to cause poor fuel flow control performance Even out of control, that is, there is a temperature drift characteristic, and the fuel flow of the engine cannot be accurately controlled, resulting in potential risks of engine overheating and overrunning. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an engine numerical control system using a stepping motor, which can effectively avoid the influence of the control qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/08
CPCF02M37/08F02M2037/085
Inventor 程尚邢林郭潇晟李志鹏李辉
Owner 中国航发控制系统研究所
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