An Adaptive Control Circuit for Shock Absorption and Noise Reduction of Rocket Fairing

A technology of adaptive control and fairing, applied in the direction of adaptive control, general control system, mechanical oscillation control, etc., can solve the problems of difficult development and seldom application of control modules, so as to completely eliminate noise disturbance, ensure normal operation, easy-to-achieve effects

Active Publication Date: 2021-08-10
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of technology is rarely used in the industrial production process because there is no suitable physical circuit, and the corresponding control module is difficult to develop.

Method used

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  • An Adaptive Control Circuit for Shock Absorption and Noise Reduction of Rocket Fairing
  • An Adaptive Control Circuit for Shock Absorption and Noise Reduction of Rocket Fairing
  • An Adaptive Control Circuit for Shock Absorption and Noise Reduction of Rocket Fairing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] An adaptive control method for shock and noise reduction of a rocket fairing, comprising the following steps:

[0043] S1, establish the controller model, the equation is as follows:

[0044] u(t)=K 1 x(t)+K 2 (t) (1)

[0045] where u(t) is a 3-dimensional input vector, u(t) is a function of controller input with respect to time t, x(t) is a 4-dimensional column vector, x(t) is a function of system state with respect to time t, K 1 is a 3*4-dimensional vector matrix is ​​the control gain of the system state, K 2 (t) to eliminate the effects of interference;

[0046] S2. Get K 1 Parameter value, K 2 (t) function expression, system external disturbance function w(t);

[0047] S21, K 1 Obtained by the following linear inequality matrix:

[0048] AQ+QA T -Z T B T -BZ<0 (2)

[0049] where Q=P -1 , Z=K 1 P -1 ;P -1 It is the inverse matrix of the matrix P, and P is a 4*4 matrix; T represents the transpose of the matrix; A is an n*n matrix, which is the coeffi...

Embodiment 2

[0075] In order to implement the method in Embodiment 1, this embodiment provides an adaptive control circuit for shock and noise reduction of a rocket fairing.

[0076] Connection instructions for each module

[0077] Such as Figure 16As shown, the circuit includes a rocket fairing structure controller and a structure model module, and the rocket fairing structure controller includes a vector signal module, a control gain module, and a control input module arranged in sequence, and the output terminals of the structure model module are respectively It is connected with the vector signal module, the control gain module and the control input module, and the output terminal of the control input module is connected with the input terminal of the structure model module. In this embodiment, the structure model module outputs 4 signals and inputs them into the vector signal module, the control gain module, and the control input module, the vector signal module outputs 3 signals in...

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Abstract

The invention discloses an adaptive control circuit for shock and noise reduction of a rocket fairing, which comprises a rocket fairing structure controller and a structural model module. The rocket fairing structure controller includes a vector signal module, a control Gain module, control input module, the output end of the structure model module is connected with the vector signal module, control gain module, control input module respectively, the output end of the control input module is connected with the input end of the structure model module. The advantage of the invention is that the control circuit can completely eliminate noise disturbance by using ordinary electronic components such as resistors, capacitors, operational amplifiers, and multipliers. The self-adaptive control circuit is easy to implement in the control layer of the rocket fairing system in the form of a control module, and can automatically adjust control parameters in a complex noise disturbance environment, improve control accuracy, and ensure the normal operation of the rocket, which has good economic benefits and social significance .

Description

technical field [0001] The invention relates to the field of adaptive control, in particular to an adaptive control circuit for rocket fairing damping and noise reduction. Background technique [0002] During the take-off and flight of the launch vehicle, it experiences complex mechanical environments such as acoustic vibration, aerodynamic force, and aerodynamic heat. The structures and sound fields aroused by them form a high sound pressure level environment in the fairing, which may cause the limited load of the spacecraft, The damage to structures such as solar panels, control circuits, and antennas reduces the safety and reliability of the entire system, and even leads to the failure of the entire launch mission. of spacecraft failures are caused by vibration, shock and noise loads during the launch phase. Therefore, it is particularly important to carry out the sound insulation and noise reduction design of the fairing. [0003] In recent years, all countries have be...

Claims

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Application Information

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IPC IPC(8): G05B13/04G05D19/02
CPCG05B13/042G05D19/02
Inventor 金小峥王少凡赵振
Owner HEFEI UNIV OF TECH
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