Method and device for acquiring frequency domain performance of controlled object
A technology of controlled objects and acquisition methods, which is applied in the direction of electric controllers, etc., can solve problems such as difficult acquisition of frequency domain performance parameters, delays and errors in controller design, and digital complexity, so as to shorten design time and simplify frequency domain performance The effect of the parameter on the process
Active Publication Date: 2017-06-09
YANGZHOU YUAN ELECTRONICS TECH CO LTD
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Problems solved by technology
[0006] In the process of using principle steps to obtain the relationship between the frequency domain performance parameters of the controlled object and its structural parameters based on strict mathematical derivation, due to various reasons such as unskilled, calculation errors, high-order difficult calculations, and too complicated numbers, etc. , it will make it too difficult for some designers to obtain the frequency domain performance parameters of the controlled object, which will easily lead to delays and errors in controller design
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[0045] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
[0046] figure 1 It is a flowchart showing a method for acquiring frequency-domain performance of a plant according to an embodiment of the present invention. Such as figure 1As shown, the acquisition method of the controlled object frequency domain performance of the present invention comprises the following steps:
[0047] First, in step S10, determine the transfer function structure G of the controlled object p (s):
[0048]
[0049] Among them, K, α, β are the structural parameters of the controlled object, and the frequency domain performance para...
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The invention provides a method and device for acquiring frequency domain performance of a controlled object. The method comprises the steps that (a) a transfer function structure of the controlled object is determined; (b) a corresponding neural network is constructed for the determined controlled object; (c) a plurality of data samples of the controlled object are collected; (d) the collected data samples are input into the neural network, and the neural network is trained; (e) a phase angle margin and shearing frequency of the controlled object are acquired. When the method and the device are used for acquiring the frequency domain performance of the controlled object, a user is only required to input structure parameters of the controlled object so that the frequency domain performance parameter of the controlled object can be calculated rapidly and the process for acquiring the frequency domain performance of the controlled object is simplified, and accordingly, the design time of a controller can be shortened.
Description
technical field [0001] The invention belongs to the field of automatic control, and in particular relates to an artificial intelligence-based acquisition method and device for the frequency-domain performance of a controlled object. Background technique [0002] In industrial automation systems, the design of controllers is the core technical issue of automatic control. The basis for designing the controller is the frequency-domain performance parameters of the controlled object (such as a motor, etc.). [0003] In the process of obtaining the frequency domain performance parameters of the existing controlled object, the principle steps are usually used to obtain the controlled object's Frequency Domain Performance Parameters. Specifically, for a controlled object, its transfer function structure is usually used to characterize the structure of the controlled object. For example, for a common type of controlled object, its transfer function structure can be expressed as: ...
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IPC IPC(8): G05B11/01
Inventor 李太福黄迪王坎刘媛媛李迪
Owner YANGZHOU YUAN ELECTRONICS TECH CO LTD