Hardware-in-the-loop generator and use method thereof

Abstract

The invention discloses a hardware-in-the-loop generator which comprises a physical object part and a non-physical object part, wherein the non-physical object part is an upper computer loaded with waveform design simulation software; the physical object part is a lower computer; the lower computer comprises a D / A (Digital / Analogue) converter circuit, a signal conditioning circuit and an FPGA (Field Programmable Gate Array) chip in which an NiosII soft core processor is embedded; when the hardware-in-the-loop generator is in use, the non-physical object part can be used for calling an automatic mode by manual operation or program to set parameters of simulation waveform; if the displayed simulation waveform meets the requirement, module parameters are generated and transmitted to the lower computer and then are matched with an NiosII soft core processor and dual-port RAM (Random Access Memory) and DDS (Direct Digital Synthesizer) modules to transmit the processed digital signal to the D / A converter circuit; and finally, the processed digital signal is processed by the D / A converter circuit and the signal conditioning circuit to obtain a final signal. With the design, the hardware-in-the-loop generator disclosed by the invention has the advantages of higher precision, stronger intuitiveness, lower production cost, higher automatic degree and wide application range.

Description

technical field [0001] The present invention relates to a signal generator, in particular to a semi-physical signal generator and a method of use thereof, and is particularly suitable for combining Nios II soft-core processor, DDS technology, SOPC technology with upper computer software and lower computer hardware to generate a signal. Background technique [0002] At present, there are mainly two types of dedicated function signal generators on the market: analog and digital. Analog signal generators use analog circuits to complete signal conversion, which has low precision and large distortion, and are basically no longer used; digital signal generators mostly use DDS technology, and use the combination of DSP and FPGA to complete signal calculation and output, although the accuracy Higher, but requires the circuit to have strong computing power, and the cost is higher. [0003] In addition, most of the existing signal generators use panel keys to control the parameters ...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects and problems of poor precision, weak intuitiveness, high production cost, low degree of automation, and narrow application range in the prior art, and provide a high-precision, intuitive Semi-physical signal generator with strong performance, low production cost, high degree of automation and wide application range and its application method

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