Wave period prediction method, device and equipment

• Main Authors: YANG JUNHUA, CHEN HAIFENG, XIONG FENGJUN, HUANG BAOZHOU
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2018
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention discloses a wave period prediction method, comprising: capable of acquiring displacement information of a motor rotor in real time; determining, according to the displacement information, a main frequency displacement curve and further determining a main frequency speed curve and a main frequency acceleration curve; and finally automatically detecting zero crossing points of the mainfrequency speed curve and the main frequency acceleration curve by using a dsp chip and taking twice of the difference value of adjacent zero crossing points as a wave period prediction result. It shows that the method predicts the wave period according to the displacement information in real-time with high real-time performance, and it is not necessary to set complex parameters. Furthermore theprediction process is very simple by using the automatic zero crossing detection of the dsp chip. And the purpose of simply and effectively predicting the wave period is achieved. The invention further provides a wave period p