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Magnetic loss automatic test platform and sinusoidal excitation signal source used by same

A sinusoidal excitation and automatic test technology, applied in the direction of electric pulse generator circuits, etc., can solve the problems of poor waveform accuracy, low resolution, low operating frequency of the sinusoidal signal source, etc., and achieve a wide frequency range, high precision, and fast test time. Effect

Active Publication Date: 2015-12-02
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

[0003] The signal source generator composed of traditional discrete components has problems such as low operating frequency of the sinusoidal signal source, low resolution, and poor output waveform accuracy.

Method used

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  • Magnetic loss automatic test platform and sinusoidal excitation signal source used by same
  • Magnetic loss automatic test platform and sinusoidal excitation signal source used by same
  • Magnetic loss automatic test platform and sinusoidal excitation signal source used by same

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0025] A kind of magnetic loss automatic test platform of the present invention such as figure 1 As shown, it includes the host computer, sinusoidal excitation signal source, power amplifier, magnetic component under test, and power analyzer connected in sequence, and the host computer is connected to the power analyzer. In the present invention, the upper computer is a computer, which runs the magnetic loss automatic test platform software, the upper computer communicates with the power analyzer, and feeds back the measured magnetic component information such as voltage, current, frequency and power; the sinusoidal excitation signal source receives the upper computer The control command generates the expected amplitude and frequency of the excitation sinusoidal source signal; the power amplifier receives the sinusoidal excitation signal source sig...

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Abstract

The invention discloses a magnetic loss automatic test platform and a sinusoidal excitation signal source used by the same. The magnetic loss automatic test platform comprises a power analyzer, an upper computer, the sinusoidal excitation signal source, a power amplifier and the like. The power analyzer collects information such as an excitation voltage and a frequency of a tested magnetic core and feeds back monitored voltage, current and power signals to the upper computer; the upper computer adjusts the sinusoidal excitation signal source in real time based on the monitoring results; the power amplifier generates a power signal to enable the tested magnetism to work in an expected scope. The sinusoidal excitation signal source comprises a single-chip with the model of STC89C52, a DDS chip with the model of AD9834, a DAC chip with the model of AD5620, a first resistor, a second resistor and a 75 MHz crystal oscillator. The magnetic loss automatic test platform and the sinusoidal excitation signal source used by the same are applicable for design of magnetic loss automatic test platform circuits, and have a wide application foreground.

Description

technical field [0001] The invention relates to a magnetic loss automatic test platform and a sinusoidal excitation signal source used therefor. Background technique [0002] As the core of the power supply system of electrical and electronic equipment, magnetic components can operate reliably, which is directly related to the reliability of the entire system. Effective measurement of core loss can provide a basis for the design of magnetic component heat dissipation schemes. At the same time, the magnetic core manufacturer also needs to test the loss data of the magnetic core material to ensure the consistency of the product. Therefore, designing a high-frequency magnetic loss test platform based on a sinusoidal excitation source has important engineering application value. [0003] The signal source generating device composed of traditional discrete components has problems such as low operating frequency of the sinusoidal signal source, low resolution, and poor output wav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K3/02
Inventor 周岩孙爱鸣张俊波谢俊
Owner NANJING UNIV OF POSTS & TELECOMM
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