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Time-domain performance graph method for designing phase lead correction link

A phase-advance and graph technology, which can be used in computing, special data processing applications, instruments, etc., and can solve problems such as difficulty in parameter design.

Inactive Publication Date: 2017-06-30
NORTH CHINA INST OF AEROSPACE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the parameter design of the calibration link is a very important and very difficult problem

Method used

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  • Time-domain performance graph method for designing phase lead correction link
  • Time-domain performance graph method for designing phase lead correction link
  • Time-domain performance graph method for designing phase lead correction link

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Experimental program
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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and embodiment the present invention will be described in further detail:

[0018] Such as figure 1 Shown is the block diagram of the system transfer function, where K b = 40 is the amplification factor of the system amplifier, and the transfer function of the phase lead correction link is It has two control parameters, namely T and α, and 0.05≤α<1, here we can choose the value range of parameter T as 0<T<1.

[0019] Taking the bounded control parameters T and α as the vertical and horizontal coordinates respectively, the parameter design space of the correction link can be obtained. Taking the time-domain control performance index as the objective function, taking the parameters T and α as the design variables, and drawing the contour line of the objective function in the parameter design space, the performance curves of each performance index can be obtained.

[0020] figure 2 Shown is the delay time performance gra...

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Abstract

The invention discloses a time-domain performance graph method for designing a phase lead correction link. The time-domain performance graph method is characterized by comprising the steps of building a bounded two-dimensional parameter design space by employing two control parameters of the phase lead correction link as vertical and horizontal coordinates separately; drawing contour lines of various control performance indexes in the parameter design space by employing a time-domain control performance index as a target function and two control parameters of the phase lead correction link as design variables to obtain systematic control performance graphs, wherein the control performance graphs display the one-to-one correspondence relationships between the control performance index and the correction link parameters; and coordinating and comparing various performance graphs to obtain the correction link parameters with the optimal comprehensive control performance, thus completing optimization design of the correction link. The time-domain performance graph method has the characteristics of being intuitive, systematic and comprehensive.

Description

[0001] Technical field: [0002] The invention belongs to the field of mechanical engineering control, in particular to a time-domain performance graph method for designing a phase lead correction link. [0003] Background technique: [0004] If the control performance (stability, accuracy and rapidity) of the controlled mechanical system does not meet the requirements, the control performance of the controlled mechanical system can be improved by adding a correction link in the system. Phase advance correction is one of the commonly used correction methods. [0005] In the field of mechanical engineering control, the most commonly used method for designing the phase lead correction link is the frequency domain design method using Bode diagram for design. This method generally takes the phase margin as the performance index, and determines the parameters of the correction link through analytical calculation with the help of the Bode diagram. This method satisfies the given ph...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17
Inventor 王冰高永亮
Owner NORTH CHINA INST OF AEROSPACE ENG