Device and method for synthesizing start-up signal of Coriolis flowmeter with full digital waveform
A Coriolis flowmeter and waveform synthesis technology, applied to mass flow measurement devices, measurement devices, direct mass flow meters, etc., can solve problems such as inability to adapt to the environment, cumbersome control process, complex design, etc., and achieve stable vibration effects Reliable, good robustness, and the effect of increasing the vibration speed
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[0021] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:
[0022] Aiming at the all-digital drive system of the Coriolis flowmeter, the present invention proposes a method for synthesizing the start-up signal of the Coriolis flowmeter with a 1Hz all-digital waveform based on harmonic decomposition, and designs and implements a set of all-digital drive devices according to the method. The device includes: a microcontroller, a direct digital frequency synthesizer (hereinafter referred to as DDS), a multiplying digital-to-analog converter (hereinafter referred to as MDAC), and an audio power amplifier (hereinafter referred to as power amplifier). The hardware connection relationship of the device is as follows: figure 1 shown. The data output pin of the microcontroller is connected to the input pin of DDS and MDAC, the output pin of DDS is connected to the input pin of MDAC, the output pin of MDAC is connected to the input...
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