34results about How to "To achieve mutual integration" patented technology

The invention discloses a method for identifying human face through double models and mainly solves the problem that the traditional identification method greatly depends on textures of a human face image. The method of the invention comprises the following steps: dividing a human face image sample set into a test image set and a train image set, and studying a train image to obtain a characteristic face subspace and an active apparent model; projecting test and train images to the characteristic face subspace to obtain texture models, and calculating the distance between the test and train image texture models; automatically searching test and train image characteristic points according to the active apparent model, constructing shape models, and taking an image edit distance as the distance between test and train image shape models; and determining identity information of the test image through weighted fusion of the distances. Compared with the texture-based or structural information-based identification method, the method of the invention has the advantage of higher identification rate to the human face image with changed expression, illumination and size, particularly to the human face image acquired under the condition of changed illumination, and can be used for authentication under the influence of a plurality of factors.

The invention discloses an on-load tap changer and a method thereof, comprising a main switch, a thyristor auxiliary circuit, and a selector switch; each main switch is respectively connected in series in different circuits of a voltage regulating coil of a voltage regulating transformer through at least one tap; all When any one of the main switches is closed, the voltage regulating coil can form a current flow path; when different main switches are closed, the voltage regulating transformer outputs different voltages; One main switch can be connected in parallel with another thyristor auxiliary circuit through the selector switch; two switchers are formed which are respectively connected in parallel with the main switch of the thyristor auxiliary circuit; the shared switcher is not included inside the on-load tap changer; each switch is operated in sequence to realize the load The current is switched on-load from the originally closed main switch to the closing main switch.

The invention discloses a layered control method for isolated island micro-grids considering communication data disturbance under the concept of CPS. The present invention is based on the concept of CPS, and utilizes the internal communication network of the microgrid to divide the layered control structure into two layers: the network layer and the physical layer; in the network layer, the influence of CDD on the system control effect is analyzed, and a The strategy of backpropagation neural network is used to complete data compensation and eliminate the influence of CDD. In the physical layer, the P‑ω / Q‑U droop control is used as the primary control of the voltage and frequency of the microgrid. At the same time, the communication data in the network layer and the consistency protocol with the virtual leader are used to complete the control of the output voltage and frequency of each DER. The secondary control of the angular frequency ensures reliable control of the voltage and angular frequency of the microgrid.