Control method for automatic throttle and pitch adjustment of variable-pitch rotorcraft

A control method, rotorcraft technology, applied in the direction of control starting method, rotorcraft, motor vehicles, etc., to achieve the effect of reducing vibration, improving engine speed, and improving fuel utilization

Inactive Publication Date: 2018-01-05
XIAN TANVEN INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Using an oil engine to drive the rotation of the pitch control system is a commonly used power configuration scheme. In the existing control methods, there is only an inventive design for optimizing the fuel consumption of the engine alone, and there is no complete set of mechanisms for pitch control aircraft. Optimized to make the overall design achieve the inventive design of reducing fuel consumption

Method used

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  • Control method for automatic throttle and pitch adjustment of variable-pitch rotorcraft
  • Control method for automatic throttle and pitch adjustment of variable-pitch rotorcraft
  • Control method for automatic throttle and pitch adjustment of variable-pitch rotorcraft

Examples

Experimental program
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Effect test

Embodiment

[0031] Such as figure 1 Shown, a kind of variable-pitch rotorcraft throttle pitch automatic coordination control method comprises the following steps:

[0032] Step 1. After the aircraft takes off, detect the current pitch and the output speed of the engine through the speed sensor. Pitch Relationship Table", and estimate the current lift through these two data:

[0033] L=f(ω,α);

[0034] In the formula, ω is the engine output speed; α is the pitch; L is the generated lift;

[0035] Through the function relationship and the actual measurement of the currently used engine, a table of the relationship between the rotational speed and the pitch is made. The relationship table is roughly as follows

[0036] Rotation speed (r / min)\propeller pitch (degrees)

0

1

1000

Xx

xxx

1200

Xx

xxx

….

[0037] The current lift force can be obtained by interpolation through this table, and the interpolation o...

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Abstract

The invention discloses an automatic matching control method for the variable propeller pitch rotorcraft accelerator propeller pitch. During height keeping flight, current rotation speed and total propeller pitch are obtained, and current estimated lift is obtained according to the measured relation; optimal rotation speed and torque relation under the current lift is obtained according to the calculated rotor rotation speed-lift and a rotor rotation speed-torque relation table, the optimal rotation speed is taken as a control target, amplitude of an accelerator is controlled by feeding back rotation speed difference, and the rotation speed slowly approaches the current optimal rotation speed; and the propeller pitch is adjusted through a height retaining device to adjust the lift, and the rotation speed is gradually adjusted to the optimal rotation speed-accelerator relation. Lift changes of a rotorcraft are achieved through a variable propeller pitch mechanism, and the relation between the accelerator and the propeller pitch can be automatically adjusted in real time without human intervention; and the accelerator propeller pitch is kept within a good and reasonable range, so that margin of a control system is increased, and the effect of maintaining the height keeping flight is improved. Accordingly, the maximum lift is obtained with the minimum engine output power, and the fuel utilization rate is increased.

Description

technical field [0001] The invention relates to the design field of a control system of a pitch-variable aircraft, in particular to an automatic control method for throttle pitch of a pitch-variable rotorcraft. Background technique [0002] With the current development of aircraft, the pitch control system has the advantages of fast response speed and light actuator design. People pay more and more attention to pitch-variable aircraft. From helicopters to variable-pitch multi-rotors, all kinds of pitch-variable aircraft have become the choice of aircraft design. [0003] Using an oil engine to drive the rotation of the pitch control system is a commonly used power configuration scheme. In the existing control methods, there is only an inventive design for optimizing the fuel consumption of the engine alone, and there is no complete set of mechanisms for pitch control aircraft. Optimization is carried out so that the overall design achieves the inventive design of reducing f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C27/57B64C13/16
CPCB64C13/16B64C27/57
Inventor 吕京兆左盘飞王新升王以诺冯琳秩程靖刘喜龙
Owner XIAN TANVEN INTELLIGENT TECH CO LTD
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