2results about How to "Avoid local convergence" patented technology

This invention provides a method for identifying parameters of a heat pump system based on an improved Adam co-evolutionary algorithm, belonging to the field of industrial control process system identification technology. It solves the technical problems of traditional algorithms in heat pump system parameter identification, such as lack of physical constraint guidance, easy output of meaningless solutions, slow convergence speed, and the tendency of co-evolutionary algorithms to get trapped in local optima. The method includes the following steps: Step 1) Constructing a Hammerstein-Wiener model of an air-source heat pump based on the thermodynamic mechanism of core components; Step 2) Constructing the identification process of the improved Adam co-evolutionary algorithm, combining three groups of cooperative search, chaotic mechanisms, and the Adam optimizer to achieve efficient and accurate parameter identification. This invention uses the improved Adam co-evolutionary algorithm for air-source heat pump system parameter identification, which has both fast convergence speed and high identification accuracy, effectively avoids local optima, and has small parameter estimation errors.

The application discloses a dam slope anti-overtopping device, which belongs to the technical field of dam protection in water conservancy projects and comprises a plurality of protection sheets and a plurality of anchor nails. The plurality of protection sheets are laid on a dam slope, each protection sheet is in a wave shape and has equal peak and valley amplitudes, the protection sheet is inclined upward from a first end to form a first wave peak, the protection sheet is inclined upward from a last wave valley to form a second end, the protection sheet is gradually tilted upward from a third end to a fourth end, the first end and the second end of two adjacent protection sheets in a second direction are overlapped to form a continuous wave structure extending in the second direction, and two adjacent protection sheets in a first direction, the fourth end of the upper protection sheet is overlapped on the third end of the lower protection sheet. Each protection sheet is connected to the dam through the anchor nail at the wave valley of the third end. The wave-shaped protection sheet forcibly converges and disperses water flow, gradually overlaps to dissipate energy, and is anchored at a low wave valley, thereby realizing efficient water diversion and structural stability under the overtopping condition, achieving the protection effect of overtopping without collapse.