Virtual instrument technology-based motor experimental system scheme

Abstract

The invention relates to a scheme and a device, which realize the acquisition of rotation speed signals of a tested motor through a sensor, set the rotation speed signals to be in an identification range of a signal conditioning circuit, after conditioning the signals, transmit the signals into a computer through a data acquisition card, finish processing data through virtual instrument software in the computer, display digital values of a rotation speed, torque and output power obtained through analysis processing on a friendly human-computer interface of the computer and simultaneously record the digital values in corresponding files. The scheme and the device have the following advantages that: experimental conditions for direct current machine testing in the prior art are improved; the whole scheme has good repeatability and avoids personal errors; the device applying the scheme realizes the integration of experimental instruments, so that the integration cost of experimental and testing equipment is remarkably reduced and steps are remarkably reduced; and through proper extension, the scheme and the device can be widely applied to the experiment teaching of other subjects, and can realize the experiment teaching and scientific research of a network and greatly improve the practical efficiency of experimental environments.

Description

technical field [0001] The invention relates to the technical field of virtual instruments, in particular to the performance test of an experimental motor. Background technique [0002] Since National Instruments (NI) proposed the concept of virtual instrument in 1986, the virtual instrument technology characterized by "software is an instrument" and combined with modern instrument technology and computer technology has been rapidly applied to engineering control, scientific In measurement and experimental teaching, the measurement and control functions of the instrument are realized through software, and the display, storage, analysis and processing of data are completed. At present, many universities at home and abroad have started to build and transform laboratories through virtual instrument technology to improve the means and efficiency of existing experimental teaching and scientific research. [0003] In the process of university motor experiment, the characteristic ...

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Problems solved by technology

[0004] In addition, in the existing experimental system, the experimental devices are relatively independent, there is basically no data communication function between the instruments, and the students check, record and analyze the experimental data manually, which makes the accuracy and reliability of the experiment unreliable. Guarantee that the purpose of the experiment cannot be achieved

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