Smart skin antenna oriented strain sensor layout method

Abstract

The present invention discloses a smart skin antenna oriented strain sensor layout method. The whole idea of the method is that with positions and the total number of sensors as design variables and with the linear weighted sum of the displacement estimation errors and the total number of sensors as a target function, providing an upper limit of the total number of the sensors; adding an 0-1 topology variable to each position variable; representing a sensor position combination with dual variables; establishing an optimization model; and optimizing positions and the total number of the sensors. The smart skin antenna oriented strain sensor layout method is beneficial in that the number and positions of sensors can be both optimized effectively.

Description

Technical field [0001] The invention relates to a strain sensor layout method, in particular to a strain sensor layout method oriented to an intelligent skin antenna, and belongs to the technical field of sensor optimized layout. Background technique [0002] Smart skin antenna refers to embedding the radio frequency components and sensor elements of the integrated antenna array into airborne, shipborne, spaceborne and vehicle-mounted structures. In service, due to the influence of aerodynamics, vibration, shock or temperature load, the structure of the smart skin antenna will be deformed. The sensor system is the eye of the entire smart skin antenna system, through which the antenna can be used to obtain and transmit information while adapting to various harsh environments. Due to the limitation of test conditions, it is necessary to embed strain sensors in the skin antenna to obtain comprehensive and accurate test information and measure its deformation in real time. The pate...

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Problems solved by technology

[0009] 1. The number of sensors is mostly considered and determined based on factors such as experience and economics. It is random and uncertain, and most of the optimal layout is discussed under the condition of a given number of sensors.

[0010] 2. The existing sensor optimization layout method is mainly used in the safety detection of some important structures, such as bridges, hangars, etc., and there is little research on the deformation measurement applied to antenna structures

And the layout method only considers a single factor, and fails to coordinate and consider other factors well, and it is very likely that there will be a result of focusing on one thing and losing the other.

[0011] 3. Most of the existing sensor optimization layouts are applied displacement sensors. The direct measurement of structural displacement by the displacement sensor cannot eliminate the influence of the foundation displacement, and the displacement sensor also has the disadvantages of heavy weight and low measurement accuracy.

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