2 results about "Changing trend" patented technology

This application belongs to the field of silicon steel strip production control technology, and discloses a silicon steel strip rapid cooling control method and system. By acquiring motion parameters such as the instantaneous speed and speed change trend of the target segment of the silicon steel strip before entering the cooling zone in real time, and combining them with the physical location information of the cooling zone, the method accurately predicts the expected time when the target segment arrives at the cooling zone and the expected residence time in the zone. Based on this, the method dynamically determines the required target cooling intensity according to the preset ideal cooling process and the expected residence time. At the same time, considering the inherent response time of the cooling actuator, the method calculates and determines the triggering time of the cooling command in advance. This method can effectively solve the problem of cooling inaccuracy caused by production line speed fluctuations in the prior art, avoid the steel strip outlet temperature from deviating from the preset value, thereby ensuring the initial conditions of the subsequent cooling zone and maintaining the stability of the morphology and distribution of precipitates.

The application discloses a method for early warning of abnormality of continuous casting equipment based on current change trend, which collects equipment fault information, collects current data of the equipment with faults and the equipment without faults as selected training set, analyzes the change law of the current data, and proposes a trend alarm mechanism; if the current value is increased in a short period, the trend alarm mechanism captures the current cumulative increase value in the short period; if the current value is slowly and steadily increased in a long period, the trend alarm mechanism captures the number of continuous days of increase and the cumulative increase amount of the current in the period; the over-limit condition characteristic value of the trend alarm mechanism is set, the current data of the equipment is collected and calculated, the over-limit condition characteristic value is met, and equipment abnormal early warning is given. The method monitors the current change trend of the equipment, constructs an early warning model based on the current change trend, compares and analyzes the data of multiple equipment, improves the accuracy and universality of the early warning model, and accurately early warns the equipment fault hidden danger.