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A fast online moment of inertia identification method and system suitable for servo systems

A moment of inertia and servo system technology, which is applied in the field of fast online moment of inertia identification, can solve problems such as limitation and long identification convergence time, and achieve the effects of ensuring integrity, accelerating convergence time, and increasing speed

Active Publication Date: 2022-03-18
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a fast online moment of inertia identification method and system suitable for servo systems, thereby solving the problem that the traditional moment of inertia identification method is limited in actual working conditions and the identification converges Long time and other issues

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  • A fast online moment of inertia identification method and system suitable for servo systems
  • A fast online moment of inertia identification method and system suitable for servo systems
  • A fast online moment of inertia identification method and system suitable for servo systems

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[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0039] Embodiments of the present invention provide a fast online moment of inertia identification method suitable for servo systems, such asfigure 1 As shown, the method includes the following steps:

[0040] S101: Make the motor start to rotate under the condition that the acceleration is not zero, and obtain the feedback current i of the motor within the preset rotation range 初 and angular v...

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Abstract

The invention discloses a fast online moment of inertia identification method and system suitable for a servo system. Before calculating the identification formula, a piece of data is extracted online by limiting the motor motion state, and a relatively accurate one is estimated by the motion control model of the motor. The initial value of the identification, the estimation of the initial value can greatly speed up the convergence time of the algorithm, and achieve the effect of fast online identification. Taking into account the sampling delay of the current, the current and the rotational speed are processed synchronously to ensure the validity of the input data of the algorithm. The digital moving average method is used to process the speed and current synchronously. Even a digital processing chip with weak computing power can meet computing needs.

Description

technical field [0001] The invention belongs to the field of parameter identification of servo parameter self-tuning, and more specifically relates to a fast online moment of inertia identification method and system suitable for a servo system. Background technique [0002] The identification of the moment of inertia in the AC servo system is very important for the parameter self-tuning of the speed loop. The fluctuation of the moment of inertia in the actual system will also deteriorate the dynamic performance of the servo drive and affect the bandwidth of the speed loop. The upper limit of the speed loop bandwidth of the AC system is the system limit bandwidth, which is a basic parameter that affects the design of the speed loop PI controller. Real-time monitoring of the system moment of inertia and adjustment of the parameters of the speed loop PI controller can ensure that the system is always in a good operating state. [0003] At present, the common moment of inertia i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/14H02P21/16H02P21/18H02P21/20H02P21/22H02P25/02
CPCH02P21/14H02P21/16H02P21/18H02P21/20H02P21/22
Inventor 童乔凌王旭宝闵闰刘涛
Owner HUAZHONG UNIV OF SCI & TECH
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