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System and method for controlling eccentric signals of roller based on CPU and DSP

A technology of signal control and CPU board, applied in the direction of rolling force/roll gap control, digital control, electrical program control, etc., can solve the problem of heavy load of the main CPU, and achieve the effect of stable performance and strong anti-interference ability

Inactive Publication Date: 2009-11-11
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

Therefore, a CPU cannot meet the requirements of the system in terms of hardware. In actual industrial applications, the main CPU often appears to be overloaded.

Method used

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  • System and method for controlling eccentric signals of roller based on CPU and DSP
  • System and method for controlling eccentric signals of roller based on CPU and DSP
  • System and method for controlling eccentric signals of roller based on CPU and DSP

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Embodiment Construction

[0029] The eccentric signal separation system provided by the invention adopts a CPU+DSP parallel processing structure, and the system design is divided into two parts: a main processing system and a DSP auxiliary processing system. The main processing system adopts a common hardware platform, and the VMIVME-7807 single-board computer of GEFANUC Company is purchased. The main processing system is mainly software design; the DSP auxiliary processor system is independently designed, and the core DSP chip adopts TMS320VC33; Build a parallel multiprocessor framework through the PMC bus.

[0030]The main processor has a standard VME bus, can work normally under a standard VME framework, and supports multiple processors. The DSP auxiliary processor realizes the parallel coordination work of the main and auxiliary processors by means of the PMC interface on the main processor. The photoelectric encoder signals and rolling force signals on the working rolls and back-up rolls of the r...

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Abstract

The invention belongs to the field of steel production process detection and control and relates to a system and a method for controlling eccentric signals of a roller based on CPU and DSP, which can carry out real-time detection and extraction on the eccentric signals of the roller and have a function of eccentric compensation in controlling the thickness of plates and strips. The system mainly consists of a single board DSP device based on a PMC bus and used for eccentric signal detection and treatment and a single board CPU used for eccentric control, and comprises a collecting module used for collecting data of an photoelectric encoder for eccentric phase detection and rolling force signals of a frame, a digital signal processing module used for carrying out frequency spectrum analysis and eccentric phase analysis of the collected rolling force signals, and a PMC interface module used for carrying out information exchanging with the main CPU board. The system and the method can exactly extract the eccentric characteristic signal, can exactly predict the eccentric signal phase, can exactly utilize the eccentric signal to carry out eccentric compensation thickness control, can adapt to complex industrial environment conditions, have strong anti-interference capability, stable and reliable performance and can be applied to the thickness control system of a plate and strip roller.

Description

technical field [0001] The invention belongs to the field of iron and steel production process detection and control, and in particular provides a platform for feature extraction and analysis of roll eccentricity signals based on CPU+DSP, which has strong versatility and anti-interference ability; the main CPU board realizes thickness compensation control, and the back The board bus is an international industrial standard VME bus, and the system has a certain degree of openness to facilitate the expansion of each user. Background technique [0002] At present, with the continuous improvement and development of advanced control theory, the control algorithm is becoming more and more complex, and the performance requirements of the control system are getting higher and higher. Automatic control theory has experienced three stages of development: classical control theory, modern control theory and intelligent control theory. Parameter identification, adaptive control, neural ne...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/66G05B19/414
Inventor 彭开香钱电生董洁
Owner UNIV OF SCI & TECH BEIJING
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