Algorithm for amplitude of high-speed shaking and vibrating system

Abstract

The invention discloses an algorithm for amplitude of a high-speed shaking and vibrating system. The algorithm comprises the steps of: step 1, setting a displacement sensor in the high-speed shaking and vibrating system; step 2, measuring displacement of at least 4 sampling points in a vibration period by means of the high-speed shaking and vibrating system, wherein time differences correspondingto the two adjacent sampling points are identical; step 3, setting a maximum hardware scanning period calculation formula Tscanmax=Tshake / 4 for shaking and vibration displacement sampling according tothe sampling points obtained in the step 2; step 4, adopting a queuing method for measuring numerical values of a plurality of shaking and vibrating periods when measuring that data reading is greatly affected by the uncertain factors within one vibration period, selecting the maximum value and the minimum value in the data of the plurality of periods, and calculating the amplitude; step 5, and calculating the amplitude by means of Smax-Smin according to the maximum displacement Smax and the minimum displacement Smin acquired in the fourth step. The algorithm can set reasonable sampling periods of the amplitude encoder sampling points, and is more precise in measured data when ensuring normal using load of the CPU without affecting the use of other software.

Description

technical field [0001] The invention relates to the field of high-speed vibration systems, in particular to an algorithm for the amplitude of high-speed vibration systems. Background technique [0002] At present, on the paper machine with a speed of less than 250m / min, the table shaking is almost a must-have device. At such a low speed, the effect of the table shaking on the forming uniformity is significant. With the development of automation technology, in the paper industry, low-speed paper machines have been gradually banned and eliminated, and the replaced medium and high-speed paper machines also have the need to improve the evenness of paper sheets. For medium and high-speed paper machines, the early screen shaking system is powerless to change paper characteristics. [0003] For medium and high-speed paper machines, the high-speed shaking device can have higher frequency and wider amplitude, and only shake the breast roll, without any influence on the design of the...

AI Technical Summary

Problems solved by technology

If the setting is too large, the maximum and minimum values ​​of vibration displacement cannot be sampled, resulting in inaccurate amplitude calculation

If the setting is too small, it will increase the CPU load and affect the normal operation of other programs. In severe cases, it will cause the CPU to stop

2. Due to problems such as program operation and signal transmission, it is impossible to guarantee that the maximum and minimum values ​​of the sampling points are respectively at the peak and trough of the vibration displacement. Therefore, what method should be used to process the sampling points so that the sampling points are closer to the peaks and valleys valley, making the calculated value of the amplitude more accurate

At present, there is no set of effective standard algorithms in the market to solve these two problems

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