Automatic adjustment method and system for cavity filter

A cavity filter and automatic adjustment technology, which is applied to waveguide devices, electrical components, circuits, etc., can solve the problems of poor generalization and stability, and can not achieve fine waveform adjustment, etc., to achieve strong generalization and stability Effect

Active Publication Date: 2016-07-20
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The invention aims to solve the technical problems that the existing cavity filter automatic a

Method used

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  • Automatic adjustment method and system for cavity filter
  • Automatic adjustment method and system for cavity filter
  • Automatic adjustment method and system for cavity filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment one, such as figure 1 As shown, a cavity filter automatic adjustment method, the technical solution includes:

[0022] Step 1: Construct the target vector field corresponding to the current waveform to the standard waveform;

[0023] Modeling from the mathematical point of view of vector field, using vector field to describe the change direction of arbitrary waveform shape; the expression of vector field in this technical solution includes but not limited to the way of describing the change with straight lines, curves, or similar methods described by other mathematical names .

[0024] Step 2: Pre-adjust each screw to obtain the corresponding vector field with the fine-tuning amount of fixed size and direction;

[0025] Each screw is pre-adjusted and then reset, and the vector field generated when each screw is fine-tuned is collected. The main purpose of this step is to collect the vector field represented by each screw in the current state. The technica...

Embodiment 2

[0030] Embodiment two, such as Figures 2 to 4 As shown, on the basis of Embodiment 1, more preferably, the vector field is used to describe the trend of the waveform change caused by the adjustment of the screw, that is, evenly sample discrete points on the two waveforms before and after the change, and make a point Correspondence is a method of connecting corresponding points to show the trend of change.

[0031] Such as figure 2 As shown, waveform A and waveform B are two different adjustment states. If the same number of points are uniformly and discretely sampled on waveforms A and B, then the process of changing waveform A to waveform B can use the vector field (or called Vector field, English: vectorfield) to represent.

[0032] Establish a two-dimensional Cartesian coordinate system, the horizontal axis is the x-axis, and the vertical axis is y. Then according to the description above, a certain point A on the waveform A j (x aj ,y aj ) to a point B on the wave...

Embodiment 3

[0073] Embodiment three, such as Figure 5 As shown, a cavity filter automatic adjustment system, the technical solution includes four parts: an actuator, a control mechanism, a filter to be adjusted, and a vector network analyzer, and the four parts are connected in a closed loop.

[0074] More preferably, the actuator is controlled by a control mechanism to rotate or loosen the screw or nut on the filter to be adjusted.

[0075] More preferably, the control mechanism includes: a human-computer interaction interface, a motion control card, and a data acquisition card, the human-computer interaction interface has the function of running a vector field method or other automatic adjustment algorithms; The actuator has the function of motion control; the data acquisition card has the function of communicating with the vector network analyzer and acquiring and storing waveform data.

[0076] The filter to be adjusted generally refers to various filter products applicable to the tec...

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Abstract

The invention discloses an automatic adjustment method and system for a cavity filter, relates to the technical field of industrial robots, and aims at solving the technical problems that existing automatic adjustment method and system for the cavity filter cannot achieve fine waveform adjustment, and are poor in extensiveness and stability. According to the technical scheme, the automatic adjustment method comprises the following steps: (1) building a corresponding target vector field from a current waveform to a standard waveform; (2) respectively pre-adjusting each screw with the fine adjustment amount with fixed size and direction to obtain a corresponding vector field; (3) fitting a coefficient of the vector field corresponding to the change of each screw according to the vector field generated by pre-adjusting and the target vector field; and (4) obtaining the to-be-adjusted amount of each screw through the coefficient of each screw vector field and making the overall action of screw adjustment close to the direction of the standard waveform all the time.

Description

technical field [0001] The invention relates to the technical field of industrial robots, in particular to a cavity filter automatic adjustment method and system. Background technique [0002] In the production process of the cavity filter, it is necessary to adjust the height of multiple tuning screws on the cavity filter, so as to adjust the coupling relationship between the state in the resonant cavity and the resonant cavity, so that the cavity filter can achieve filtering that meets the production requirements Output, this production process is referred to as "cavity filter adjustment process". This is a very typical complex process. A cavity filter is usually composed of multiple resonant cavities, so it needs to be adjusted by the height of several to a dozen tuning rods. [0003] At present, most cavity filters for communication are produced in China, and due to the complexity and uncertainty of the cavity filter adjustment process, almost all cavity filter product...

Claims

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Application Information

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IPC IPC(8): H01P11/00H01P1/208
CPCH01P1/208H01P11/007
Inventor 王志扬金少堃欧勇盛杨镜锋冯伟
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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