Multi-dimensional sinusoidal vibration control method and control apparatus

A sinusoidal vibration and sinusoidal technology, applied in the field of multi-dimensional sinusoidal vibration control methods and control devices, can solve the problems of core algorithm not open to the outside world, difficult system background noise, high-frequency start-up overshoot, etc., to achieve less modules and stable control , the effect of easy maintenance

Inactive Publication Date: 2015-11-18
GENERAL ENG RES INST CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

However, the multi-dimensional sinusoidal vibration controller has not launched mature products in China so far, and its controllers are all imported from abroad, such as the controllers of SD and LMS companies in the world.
Due to the control software packaged in foreign controllers, its core algori

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  • Multi-dimensional sinusoidal vibration control method and control apparatus
  • Multi-dimensional sinusoidal vibration control method and control apparatus
  • Multi-dimensional sinusoidal vibration control method and control apparatus

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with accompanying drawing:

[0033] Such as figure 1 Shown, a kind of multi-dimensional sinusoidal vibration control device of the present invention comprises upper computer, PXI real-time controller, data acquisition card, signal interface box, acceleration sensor and displacement sensor, upper computer is electrically connected with PXI real-time controller, PXI real-time controller The signal input end of the sensor is connected to the acceleration sensor and the displacement sensor through the data acquisition card. The acceleration sensor and the displacement sensor collect the amplitude of the shaking table and the test piece. The signal interface box is used to connect the input and output of the data acquisition card and external hardware signals.

[0034] The upper computer is an ordinary computer with multi-dimensional sinusoidal vibration control software, and the lower computer is a PXI rea...

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Abstract

The invention discloses a multi-dimensional sinusoidal vibration control method and control apparatus. The apparatus comprises an upper computer, a PXI real-time controller, a data acquisition card, an acceleration sensor and a displacement sensor. The method includes the steps of system parameter setting, system self detection, system identification, sinusoidal vibration frequency starting, sinusoidal frequency sweeping, and test completing and stopping after frequency sweeping, thereby realizing control on the control apparatus. According to the invention, the control is stable; the apparatus has good sinusoidal vibration control capability from one dimension to six dimensions and is suitable for the multi-dimensional sinusoidal vibration control or sinusoidal test. In addition, different initial phases can be set for different control dimensions to form the sinusoidal vibration or motion under several kinds of combination modes. Meanwhile, an amplitude identification technology based on combination of an FFT and a filter, a semi-sinusoidal-window stable frequency starting technology, a multi-dimensional driving amplitude on-line updating method, and an acceleration and displacement mixed control method are used for obtaining a satisfying testing effect. Moreover, the apparatus has advantages of simple system, less modules, easy installation, and convenient maintenance.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a multi-dimensional sinusoidal vibration control method and control device with a hydraulic or electric vibration table, a vibration excitation system and a vibration exciter as control objects. Background technique [0002] Sinusoidal vibration test is a necessary measure to test product reliability, expose structural material and process defects, and analyze mechanical vibration characteristics. It is also an important means to solve various mechanical and structural vibration problems. At the same time, the sinusoidal vibration test is also an important vibration simulation test that simulates sinusoidal characteristics such as rotating machinery, helicopter rotors, high-speed rail locomotive pantographs, and low-frequency ships at sea. Limited by theory, technology and equipment in the early stage, only single-shaking table uniaxial vibration test can be carried out...

Claims

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Application Information

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IPC IPC(8): G05D19/02
Inventor 严侠李晓琳陈颖牛宝良胡勇王宇飞岳新武
Owner GENERAL ENG RES INST CHINA ACAD OF ENG PHYSICS
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