9results about How to "Eliminate mutual interference" patented technology

The utility model relates to aircraft detection equipment technical field, concretely is an aircraft static tensile performance calibration system, include: test bench, test bench top is equipped with test platform, test platform top surface is equipped with main shaft, and the motor and propeller are installed to the front end of main shaft through flange frame, the last end of main shaft is equipped with first pull pressure sensor, and the torque transmission rod is equipped under flange frame, and the second pull pressure sensor is connected through transmission structure to the lower end of torque transmission rod. The utility model, will detect the sensor of pull pressure and detect torque separate arrangement, through independent force transmission path carries out measurement, has eliminated the mutual interference among traditional series structure, has improved measurement accuracy and reliability, through the main shaft is post, has simplified the installation mode of motor, and the pull pressure and torque that motor and propeller produce can directly be transmitted to main shaft, need not pass through the shaft coupling, has simplified the system, when replacing motor and propeller, need not adjust main shaft, has improved the versatility and test efficiency.

This application relates to a joint estimation method for wireless communication delay and frequency offset based on hill-climbing fine search. The method includes: setting a time offset search range, a frequency offset search range, a coarse search step size, and a fine search step size based on prior information; generating a two-dimensional grid point set within the search range according to the coarse search step size; calculating the cost value of each grid point based on a cost function; taking the time offset and frequency offset corresponding to the maximum value as the coarse estimate; using the coarse estimate as the initial point, performing fine search iterations using hill-climbing; calculating the cost value of multiple candidate points in the neighborhood in each iteration, comparing and determining the update direction, and updating the current time offset and / or frequency offset; repeating the iteration until a preset exit condition is met, and outputting the final estimate. This application effectively solves the parameter coupling problem of traditional step-by-step estimation in NTN scenarios, while balancing search range and computational complexity, facilitating engineering implementation, and being applicable to various NTN systems and terminal forms.

The invention relates to the technical field of wireless communication, and provides a seabed node wireless communication anti-interference system, which comprises a high transmission rate signal module and a low transmission rate signal module based on a millimeter wave frequency band, the high-transmission-rate signal module is configured to transmit and receive network data streams and is used for seismic data transmission; the serial port signal module is configured to be used for time service signal transmission; the second pulse signal module is configured to be used for clock calibration; the antenna transmitting plane of the high-transmission-rate signal module intersects with the antenna transmitting plane of the low-transmission-rate signal module, and the intersection angle is larger than half of the sum of the half-power beam width of an antenna. The arrangement distance of the wireless communication module can be reduced to a greater extent in narrow working scenes such as seabed nodes so as to better adapt to space requirements and effectively eliminate signal interference, and stable transmission of high-speed seismic data, low-speed control and time service signals is guaranteed. The method provided by the invention has corresponding advantages.

This invention discloses a joint module parameter identification method based on modulation function DREM and active excitation, belonging to the field of robot joint control technology. The method includes: constructing a linear regression model containing the electrical parameters to be identified; using multiple modulation functions with zero boundary conditions and linear independence to perform weighted integral transformations on the linear regression model, obtaining multiple integral algebraic equations without differential terms, and combining them to form an extended regression matrix; constructing a decoupled determinant based on the adjoint matrix of the extended regression matrix, and decoupling the extended regression matrix into multiple independent scalar equations; injecting a disturbance signal into the control loop of the permanent magnet synchronous motor when the amplitude of the decoupled determinant is lower than a preset excitation threshold; updating the corresponding electrical parameters to be identified based on each scalar equation and outputting the identification result. This method solves the problems of low parameter identification accuracy and slow convergence of joint modules under high noise and low excitation conditions, significantly improving the control performance of robot joints.

The utility model belongs to the technical field of cigarette detection devices, and particularly relates to a cigarette carton package missing detection device which comprises an upper package missing detection assembly and a lower package missing detection assembly which are arranged in a mirror image mode. Any one of the upper package missing detection assembly and the lower package missing detection assembly comprises a sensor support, an upper package missing detection assembly and a lower package missing detection assembly, the sensor mounting plate is mounted on the sensor bracket; the sensor group is arranged on the sensor mounting plate, a detection probe of the sensor group is exposed outside through one or more openings formed in the side wall of the sensor mounting plate, and the sensor group is used for carrying out packet missing detection on passing cigarette cartons; and the sensor group of the upper packet missing detection assembly and the sensor group of the lower packet missing detection assembly are symmetrically arranged so as to respectively cover the packet missing detection requirements of corresponding positions of the upper row and the lower row of cigarette bars. The device disclosed by the utility model is high in detection sensitivity and reliable in detection result, and effectively avoids the problem of packet missing of the cigarette carton.

The invention discloses an integrated torque coordination control method for a multimode steering and driving system of an electric loader, which comprises the following steps of: 1) establishing a whole vehicle dynamics model containing a hinge steering and wheel edge driving coupling relationship, accurately describing an internal interaction mechanism of the system, and acquiring an accurate system model and state on line; 2) on the basis of the whole vehicle dynamics model constructed in the step 1), taking stability, efficiency and part life as a target, and on the basis of deep reinforcement learning, optimizing a steering mode and a torque distribution strategy online; and 3) based on the control quantity instruction output in the step 2), designing a multi-rate closed-loop cooperative execution and state synchronization mechanism, and coordinating the electric drive and hydraulic steering system to accurately execute the instruction. The optimal steering mode and inter-wheel torque distribution instruction can be generated on line, tire force distribution is actively coordinated, tire force saturation and dynamic load transfer are effectively restrained, and therefore the steering stability and the driving anti-skid performance are guaranteed at the same time under the complex working condition.

The utility model discloses a conveying mechanism and a production device, the conveying mechanism comprises a rack, at least two conveying belts and a first driving part, the rack is provided with a conveying surface; the conveying belts are arranged on the conveying face, and each conveying belt can convey workpieces in the preset direction. The first driving parts are arranged on the side wall of the rack, the number of the first driving parts is the same as that of the conveying belts, the driving ends of the multiple first driving parts correspond to the multiple conveying belts one to one and form transmission connection, and the multiple conveying belts are driven by the multiple first driving parts to drive the multiple conveying belts to rotate. The multiple conveying belts can conduct conveying independently. Therefore, each conveying belt is driven by the independent first driving piece, and mutual interference among a plurality of conveying belts in a traditional shared driving source system is eliminated. The running speed of each conveying belt can be independently adjusted according to actual requirements so that parallel conveying of multiple workpieces can be achieved, and therefore the conveying efficiency can be improved.

The utility model relates to the technical field of stone type judgment devices, in particular to a double-spectrum stone type analysis device based on laser-induced breakdown and laser-induced fluorescence. According to the utility model, two technologies of laser-induced breakdown spectroscopy and laser-induced fluorescence are combined. The LIBS technology can be used for analyzing the element composition in the calculus, and the LIF technology can be used for detecting the organic components in the calculus. The two kinds of signals are collected through the multi-channel spectrometer and are comprehensively analyzed through the analysis terminal, and compared with a single technology, more comprehensive stone information can be obtained, so that the accuracy of stone type analysis is effectively improved. According to the multi-technology fusion mode, richer data support is provided for accurate judgment of the calculus type, clinicians can know the characteristics of the calculus more accurately, and a more appropriate treatment scheme is formulated.

The application provides a multi-modal large language model instruction federal fine-tuning system, method and product, and relates to the technical field of electronic information. The system comprises: a server issuing a plurality of task parameters of a current round to a client; the client modulates image tokens using the semantics of local samples to obtain multi-modal representation, and then processes the multi-modal representation using local individualized parameters of the current round to obtain multi-modal individualized representation; and the server uploads the parameters of the current round obtained by fine-tuning the local model based on the representation to obtain individualized parameters of the current round which are left in the local; the server aggregates the fine-tuned parameters of the current round of the same task according to the fine-tuned parameters of the current round uploaded by each client to obtain and issue the next round parameters of the task; after fine-tuning is completed, the client obtains a final local model based on the local final individualized parameters and the final parameters corresponding to the task issued by the server, and uses the final local model for local task execution. The purpose is to improve the generalization performance of collaborative fine-tuning.