A Universal Waveform Reproduction Control Method and Control Device

Abstract

The invention relates to a general waveform reproduction control method and device. The general waveform reproduction control method includes setting test parameters, performing target wave processing, estimating original transfer functions and adjusting order. The control device comprises a computer and a signal interface case. The computer is connected with the signal interface case through Ethernet electric signals and provided with a general seismic modeling control system. The signal interface case is used for connecting controller inner signals and inputting and outputting external hardware signals. The signal interface case integrates an acceleration signal conditioning board, a displacement signal conditioning board, a busbar clamping slot, a single board computer and a power supply module. The general seismic modeling control system comprises a test parameter setting unit, a target wave processing unit, a seismic waveform simulation unit and a signal analyzing unit. By the use of the control method, estimation accuracy of the system transfer functions within full spectrum band is high, and test steps are simplified. The control device is simple and reasonable in structural design and high in control accuracy and has fewer modules and complete signal analyzing and processing functions.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a general waveform reproduction control method and a control device. Background technique [0002] Earthquake disasters cause huge loss of life and economy. Studying anti-seismic technology and improving the anti-seismic ability of various buildings has become one of the research hotspots in the fields of geotechnical construction and water conservancy. Earthquake simulation technology is widely used in civil engineering, water conservancy, bridges, tunnels and housing construction and other seismic engineering research fields as a necessary means for its test verification. [0003] With the continuous development of earthquake simulation test technology, the hydraulic vibration table using hinged support and hydraulic actuator has become the mainstream of the current earthquake simulation test device due to its advantages of large thrust, large displacemen...

AI Technical Summary

Problems solved by technology

However, in terms of earthquake simulation control technology, most of them rely on imported controllers, such as the controllers of SD, LMS and ServoTest companies in the world, or only rely on the servo control of the hydraulic vibration table without considering the control accuracy.

On the one hand, the biggest problem with using foreign controllers is that the functions are fixed, the control algorithm is not open to the outside world, and in some applications it cannot meet user requirements (for example, earthquake simulation tests are not expected to be pre-tested, and white noise spectrum is not suitable for system identification, etc.) ; On the other hand, the accuracy of earthquake simulation is too poor and cannot be corrected to directly use servo control to send seismic waves, which will affect the test results

Domestic studies have also been done on unidirectional earthquake simulation control, but there are very few literatures on earthquake simulation control technology and methods, and no mature products of earthquake simulation control devices have been released yet.

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