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Dynamoelectric oscillating table excitation voltage automatic adjusting method

An electric vibration table and automatic adjustment technology, which is applied in vibration testing, adjusting electrical variables, control/regulation systems, etc., to achieve the effects of simple and convenient use, prolonging service life, and saving energy

Active Publication Date: 2008-10-08
SUZHOU SUSHI TESTING INSTR CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The invention provides an automatic adjustment method for the excitation voltage of an electric vibration table, the purpose of which is to solve the problems existing in the existing manual operation electric vibration table excitation coil step-by-step power supply adjustment method, and to realize automatic adjustment of the excitation voltage according to the test magnitude , so as to reduce the excitation current, reduce the heating value of the excitation coil, and improve the stability and reliability of the system

Method used

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  • Dynamoelectric oscillating table excitation voltage automatic adjusting method
  • Dynamoelectric oscillating table excitation voltage automatic adjusting method
  • Dynamoelectric oscillating table excitation voltage automatic adjusting method

Examples

Experimental program
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Embodiment

[0052] Embodiment: A method for automatically adjusting the excitation voltage of an electric vibrating table

[0053] Assuming that the system is running at full thrust, the rated current value of the moving coil I 2 Is 1000A; rated excitation output voltage V 2 It is 100V; the adjustment coefficient δ is selected as 0.1.

[0054] Such as figure 2 As shown, the excitation voltage automatic adjustment system of the electric vibrating table is mainly composed of a current detection circuit, a control circuit and an excitation voltage adjustment circuit. Among them, the control circuit and the excitation voltage adjustment circuit form a closed-loop control adjustment. In addition, the acceleration measurement sensor, controller and power amplifier constitute a closed-loop control system that automatically increases the moving coil current.

[0055] The method for automatically adjusting the excitation voltage of the present invention is as follows:

[0056] (1) After the t...

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Abstract

An automatic adjustment method for magnet exciting voltage of an electrodynamic vibration shaker belongs to the environmental mechanics and electrodynamic vibration test field. The invention indirectly measures the thrust force of a vibration shaker through a maximum output current value of a preliminary test measuring power amplifier according to the principle that the output current of the power amplifier is proportional to the thrust force of the vibration shaker. Then a control circuit calculates an adjustment target value V1 of magnet exciting output voltage and adjusts the magnet exciting output voltage to the target value in closed-loop manner, ultimately controlling current flowing through magnet exciting coils. By automatically detecting and adjusting magnet exciting voltage according to the real output power value of the vibration shaker, the invention reduces the heat productivity of magnet exciting coils, saves energy, prolongs the service life of the system and solves problems existing in the sub-file power supply adjustment of prior manual magnet exciting coils.

Description

technical field [0001] The invention relates to the field of electrodynamic vibration tests of environmental mechanics, in particular to an automatic adjustment method of excitation voltage in an electrodynamic vibration table system. This method automatically detects and adjusts the excitation voltage according to the actual output power of the vibration table, thereby reducing the heat generation of the excitation coil, saving energy and prolonging the service life of the system. Background technique [0002] The electrodynamic shaking table system is a test equipment that simulates the vibration environment, such as figure 1 As shown, it consists of a vibrating table body and a control and drive system. The table body 1 is mainly composed of an excitation coil 2, a moving coil 3 (drive coil) and a worktable 4. The excitation coil 2 is fixed relative to the table body 1, and the moving coil 3 is supported floatingly. When the excitation coil is in the annular space 5 (wor...

Claims

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Application Information

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IPC IPC(8): G01M7/02G05F1/12
Inventor 朱雅莉武元桢徐付新
Owner SUZHOU SUSHI TESTING INSTR CO LTD
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