6results about How to "Control deviation" patented technology

The invention discloses a power load prediction method based on frequency domain feature clustering and weighted fusion, which comprises the following steps: decomposing a power load signal by using Fourier transform, extracting frequency domain features of different frequency components, then clustering the frequency domain features, and independently establishing a personalized prediction model for each clustering category. During prediction, a plurality of models most similar to a target prediction sequence are selected, and prediction results of the models are fused in a weighted average mode. Compared with the existing power load prediction method, the frequency feature extraction method can better capture the potential important periodic features of the power load; user load data with similar frequency domain characteristics are clustered, so that different power utilization modes can be better identified; and through weighted fusion of prediction results of different models, the error of a single model is effectively reduced, and the resistance to noise is improved.

The invention relates to a number multi-dimensional risk assessment method and system based on dynamic feature extraction, and the method comprises the steps: obtaining multi-source heterogeneous telecommunication abnormal data of a client, carrying out the calculation power assessment, and carrying out the dynamic sampling according to a calculation power score, and forming a local training set; feature extraction is carried out on the text data and the image data, and multi-modal feature alignment and fusion are realized through a generative adversarial network and an attention mechanism; in a federated learning framework, dynamically adjusting a regularization coefficient according to the difference between a local model and a global model by utilizing a reinforcement learning model, and guiding a client to carry out adaptive local training; the server performs intelligent weighted aggregation on client parameters based on data quality and model similarity, and updates a global model; and finally, a user heterogeneous graph is constructed based on the global model and the multi-modal features, neighbor selection is optimized through reinforcement learning, and abnormal users are identified by using graph neural network aggregation information. According to the method and the device, on the premise of protecting data privacy, the risk assessment accuracy of the number is effectively improved.

The invention discloses a multifunctional modularized automobile independent suspension cross beam positioning system and method.The system comprises a cross beam clamp main body structure, a cross beam clamp main body structure and a cross beam clamp main body structure, the cross beam clamp main body structure comprises a bearing structure and a bottom plate structure, and a positioning mechanism and a clamping mechanism are arranged on the bottom plate structure; the positioning mechanism comprises a plurality of positioning subassemblies and is used for accurately positioning the suspension cross beam and related parts of the suspension cross beam and ensuring that the deviation of the welded parts is within the range of design requirements; the clamping mechanism comprises a plurality of clamping assemblies and clamping devices and is used for fixing the suspension cross beam and related parts thereof in the welding process; the supporting modules comprise the first supporting module, the second supporting module and the third supporting module which are symmetrically distributed on the two sides of the clamping mechanism and used for supporting and limiting a suspension cross beam front / rear connecting plate and a suspension lower triangular arm mounting beam, and collapse caused by welding deformation in the welding process is prevented; and the independent positioning assistive device is used for independently positioning the local small parts.

This invention discloses a test method for determining the plastic strain ratio. By introducing the concept of a finite body and specifying the consistency of the measurement point positions before and after deformation, and using conventional measuring tools and different test conditions, the plastic strain ratio is determined, ensuring the stability of the data measurement results, improving test efficiency and reliability, and eliminating the problem of large fluctuations in the r-value measurement results caused by many uncontrollable factors in existing standards. It achieves accurate determination of the r-value in a low-cost, simple, and efficient manner. Therefore, this invention has important engineering practical significance and broad engineering application prospects.

The utility model relates to a special cushion block, which belongs to the technical field of steel bearing plates, in particular to a special cushion block for a steel bearing plate, which comprises a cushion block main body and is characterized by further comprising two through holes symmetrically arranged on the inner side of the cushion block main body, and a groove arranged on the upper side of the cushion block main body. The lower-layer reinforcing steel bars penetrate through the inner sides of the two through holes, and the upper-layer reinforcing steel bars are erected on the inner sides of the grooves, so that the deviation of the reinforcing steel bars can be effectively controlled, various parameter quality of steel bearing plate concrete construction is improved, the thickness of a steel bearing plate concrete reinforcing steel bar protection layer is ensured, meanwhile, the overall stability of steel concrete is remarkably improved, operation is easy, and the construction efficiency is improved. The cushion block main body is formed by prefabricating concrete, so that the manufacturing cost is low; the problems that an existing concrete cushion block only plays a role in simply supporting steel bars, part of the cushion block is prone to falling off in the concrete pouring and vibrating process, and therefore the thickness of a concrete protection layer is difficult to guarantee are solved.

The invention relates to the technical field of textile, and discloses a high-efficiency drawing frame transmission device which is characterized in that a doubling seat is arranged at the upper end of a base, a placement table is arranged at the position, corresponding to the interior of the doubling seat, of the upper end of the base, a thread conveying seat is arranged on the outer wall of the doubling seat, and thread conveying shaft seats are arranged on the two sides of the thread conveying seat; a yarn winding base is arranged at the position, corresponding to the interior of the yarn doubling base, of the upper end of the containing table, a winding drum for winding yarn is arranged at the upper end of the yarn winding base, and a transmission device is arranged at the lower end of the yarn winding base. The transmission device comprises a rotating device for controlling the winding base to rotate and a movable device for controlling the winding drum to move up and down to pull the yarn, and through the transmission device, the rotating device and the movable device are matched with each other, so that the winding drum rotates to wind the yarn; and the movable device can be indirectly stopped, so that the movable device indirectly moves up and down on the winding drum, and the linkage between the movable device and the winding drum is ensured.