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Nonlinearly controlled high-precision wave generation system and method

A non-linear control, high-precision technology, applied in the direction of machine/structural component testing, measuring devices, instruments, etc., to ensure reliability, enhance operational flexibility and stability, and improve control accuracy and stability.

Active Publication Date: 2015-04-22
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The simplification from nonlinear to linear often needs to make certain conditional assumptions, and will inevitably sacrifice part of the precision and accuracy of the system

Method used

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  • Nonlinearly controlled high-precision wave generation system and method
  • Nonlinearly controlled high-precision wave generation system and method
  • Nonlinearly controlled high-precision wave generation system and method

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Experimental program
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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, a high-precision wave-making system using nonlinear control includes a computer-controlled drive system A, a mechanical transmission system B, and a wave-making plate 12 connected in sequence.

[0022] See figure 1 , the computer-controlled drive system A is composed of a signal processing unit 13, a computer control unit 1, a motor drive unit 2 and an AC servo motor 3; The command is sent to the motor drive unit 2, and the motor drive unit 2 drives the AC servo motor 3, and the AC servo motor 3 transmits the kinetic energy to the mechanical transmission system B.

[0023] Further, the computer control unit 1 can be selected as an embedded system, a programmable controller or an industrial computer according to different usage requirements.

[0024] Furthermore, the non-linear control signal is a wave control signal with multiple ...

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Abstract

The invention discloses a nonlinearly controlled high-precision wave generation system. The nonlinearly controlled high-precision wave generation system comprises a computer control driving system, a mechanical transmission system and a wave generation board which are connected with one another sequentially, wherein the computer control driving system is used for generating a nonlinear control signal and driving the wave generation board to do a nonlinear motion through the mechanical transmission system. By adoption of the nonlinearly controlled system, waves which are more complicated and variable than waves generated by a linearly controlled system can be generated, so the wave generation precision and the wave generation accuracy can be improved. An embedded system, a programmable controller or an industrial control computer is used as a computer control unit according to different application requirements on control precision, response speed and stability; and on the premise of guaranteeing high precision and high response speed, the flexibility and the stability of operation of the system are enhanced, and the maintenance cost is reduced. In a mechanical part, a ball screw nut pair is adopted for driving; by adoption of a more stable transmission structure, the control precision and the stability are enhanced, and the reliability of the whole system during working for long time is guaranteed. The invention also discloses a nonlinearly controlled high-precision wave generation method.

Description

technical field [0001] The invention belongs to the field of marine engineering and hydrodynamic testing, and relates to a high-precision non-linear control wave-making system and method for water tanks or pools. Background technique [0002] In the field of ocean engineering and hydrodynamic testing, the wave maker is an essential device for physical model testing. The wave maker is usually set at one end of the test tank or pool, and waves are created by the reciprocating motion of the wave-making plate. Due to the complexity and diversity of experimental research, it is often required that wave generators can accurately generate waves that meet specific conditions. Most of the existing wave-making technologies are based on linear control systems, which have the advantages of being simple and intuitive, and easy to implement. However, in nature, almost all phenomena are nonlinear, and linear theory is only a special case of nonlinear theory. Practical physical systems, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
Inventor 詹杰民赵陶韩毅陈曦苏炜詹欣荣罗莹莹周泉余顺佳饶瑞生
Owner SUN YAT SEN UNIV
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