59results about How to "Reduce sensitivity" patented technology

This utility model discloses a MEMS capacitive sensor, relating to the field of micro-motor technology. Anchor points and a fixed structure are fixedly arranged. Elastic beams and connecting beams are perpendicular to each other. The anchor points support the inner frame via the elastic beams, making the inner frame suspended. The inner frame, in turn, supports the mass frame via the connecting beams, making the mass fixed structure frame suspended. Movable comb teeth on the mass frame and fixed comb teeth on the fixed structure are spaced and interleaved to form a differential capacitor. The movable and fixed comb teeth use differential output, which can differentially eliminate the capacitance change caused by vibration or acceleration of non-detected axes, preventing signal output. This helps reduce the sensor's cross-axis sensitivity and improve sensor performance.

The application relates to a full-mechanical automatic tracking self-balancing variable current voltage stabilizing device and a use method thereof, which comprises a main pipe and two gear connecting rod combined mechanisms arranged on the two sides of the main pipe respectively; the gear connecting rod combined mechanism comprises a bellows, a pressing plate pressed on one end of the bellows far from a water inlet pipe, and a pressing rod pressed on the hose; one end of the bellows is sealingly connected with the pipe wall of the water inlet pipe, the other end is sealingly fixedly connected with the pressing plate, a supporting rod extending away from the bellows is fixed on the pressing plate, a spring is connected with one end of the supporting rod far from the pressing plate, and the other end of the spring far from the supporting rod is fixedly arranged; the gear connecting rod combined mechanism further comprises a driving gear and a driven gear which are mutually meshed. The application changes the flow area of the hose through the gear transmission mechanism of each connecting rod and the expansion and contraction of the bellows when the water pressure changes, so that the flow is stored and the pressure is increased when the pressure is low, the municipal end water pressure is prevented from being lower than the minimum allowable value due to excessive secondary water supply and water taking, no external power is needed, and the automatic tracking and self-balancing functions are achieved.

The application discloses a micro light emitting diode based on polarization orientation difference regulation and a preparation method thereof. The micro light emitting diode comprises a substrate layer, and a plurality of first regions and second regions arranged alternately on the substrate layer; the first region comprises a non-doped nitrogen-polar nitride layer, a first n-type ohmic contact layer and an n-type electrode which are sequentially stacked; the second region comprises a nucleation layer, a non-doped metal-polar nitride layer, a second n-type ohmic contact layer, a multi-quantum well active region, an electron blocking layer, a p-type hole injection layer, a p++-type ohmic contact layer and a p-type electrode which are sequentially stacked; wherein the second region is a light emitting unit of the device, and a mesa structure thereof is defined by wet etching; the first region and the adjacent second region form a homopolar junction in the horizontal direction. By constructing nitride epitaxial structures with different polarities on the same substrate, a lateral carrier migration potential barrier is formed, and at the same time, etching damage is eliminated by wet etching, so that side wall non-radiative recombination is avoided.

A method for manufacturing high-strength, hydrogen-embrittlement-resistant bolts based on microsphere shot peening, and the bolts themselves, are disclosed. The manufacturing method includes: S1, cold heading and thread rolling of alloy structural steel billets to obtain bolt forming parts; S2, surface cleaning of the bolt forming parts, followed by overall surface peening with microspheres driven by high-pressure air; after overall peening, targeted strengthening peening treatment is performed on stress concentration areas such as thread roots, undercut grooves, and flange transition corners to obtain reinforced bolt parts; S3, the reinforced bolt parts are cleaned, dried, and phosphated to obtain finished bolt parts. This design, through a "overall + targeted" composite microsphere shot peening strategy, introduces a uniform residual compressive stress field and a micron-level fine-grained plastic deformation layer on the bolt surface, forming a thicker strengthening layer in stress concentration areas, significantly improving the fatigue strength and delayed fracture resistance of high-strength bolts, while ensuring uniform surface roughness and stable assembly friction coefficient.

The application discloses a multi-mode magneto-rheological actuator, which comprises a magneto-rheological damper, a working cylinder and a control cylinder which are connected in parallel, a piston is arranged in the working cylinder, so that the working cylinder is divided into a first working cavity and a second working cavity by the piston; an adjusting valve core is arranged in the control cylinder, so that the control cylinder is divided into a first control cavity and a second control cavity by the adjusting valve core; the first working cavity, the second working cavity, the first control cavity and the second control cavity are filled with magneto-rheological fluid; the first working cavity is communicated with the first control cavity, and the communication flow in the two cavities is controllable; the second working cavity is communicated with the second control cavity, and the communication flow in the two cavities is controllable; the two cavities are filled with magneto-rheological fluid; the magneto-rheological actuator has two working modes, a mode switching switch of active damping and magneto-rheological semi-active damping is formed by a motor and the adjusting valve core, and model selection is actively carried out for different scenes, so that the damping requirements of different application scenes can be met.

The invention provides a control method and system for local gluing of the outer surface of a metal round piece, and belongs to the technical field of intelligent gluing control. The method comprises the following steps: firstly, acquiring a current outer surface image and process task data of a to-be-glued metal round piece, and determining a target local gluing area, a state detection area and a target glue line parameter; releasing detection glue points in a state detection area, acquiring a detection dynamic image sequence, and extracting spreading length, edge expansion rate, necking rate, broken wire time delay and retraction displacement to form a dynamic morphology feature sequence; inputting the dynamic morphology feature sequence into a glue solution rheological state inversion model, and solving a current glue solution rheological state parameter; local gluing is carried out according to the formal gluing control instruction, and a local glue line forming result is output in combination with an outer surface result detection record. According to the method, the current flowing state of the glue solution can be recognized before formal gluing, gluing control parameters are synchronously adjusted according to the current flowing state, and the forming stability of local gluing glue lines on the outer surface of the metal round piece is improved.

This invention, entitled "A Distributed Hybrid Interleaved Batch Scheduling Method and System for Parallel Production Lines," belongs to the field of production line scheduling. It addresses the problem of minimizing inventory and stockout costs. The method includes: complete delivery based on vehicle model bill of materials; each production line comprises multiple sequentially connected stages, with the same set of dies only allowed on one production line at any given time; during the stamping stage, only one production line can utilize the stamping die to process the corresponding sub-batch; a consistent sub-batch partitioning strategy is adopted for the same batch, ensuring that the quantity and corresponding dimensions of each sub-batch remain unchanged in subsequent processing stages after partitioning; the dimensions between different sub-batches can be determined by the selected sub-batch partitioning rules; alternating processing of sub-batches from different batches is allowed on the same production line; each sub-batch can only be processed by one production line in each stage; the scheduling objective is to minimize the total sum of inventory and stockout costs while achieving complete delivery.

This invention discloses a collaborative training method and system for autonomous driving planning and control, belonging to the field of autonomous driving technology. The method includes: acquiring the current state of the vehicle, the states of surrounding traffic participants, and reference road information; using a Transformer-based planning network to output a control sequence, which is then used to generate a planned trajectory via a vehicle kinematics model; inputting the planned trajectory into a model predictive control-based neural network controller for dynamic tracking optimization to obtain the executed control quantity and predicted vehicle dynamic state; constructing a control loss and backpropagating its gradient to the planning network; and, during training, layering constraints on the planning cost term, using safety and traffic rule-related terms as hard constraints and comfort-related terms as soft constraints, and employing a multi-stage cost scheduling strategy to adjust the constraint strength or weight. This invention achieves collaborative optimization of planning and control, improves the dynamic executability and safety compliance of the trajectory, and enhances training stability and closed-loop robustness.

This invention discloses a method and system for anomaly identification in multi-source monitoring data of steel structures, belonging to the field of steel structure monitoring data processing technology. The method includes acquiring multi-source monitoring data of steel structures and unifying time-scale alignment, generating a preprocessed dataset containing working condition features and quality markers. Based on the working condition features, the physical baseline prediction value is calculated; based on the preprocessed dataset, the data baseline prediction value is calculated, and dual residuals are obtained. The physical residual strength is calculated based on the dual residuals; and the residual inconsistency degree and sliding window adaptive threshold are calculated to output anomalies. This invention constructs a stable input through unified time-scale and quality marker constraints, generates physical and data dual baselines in parallel, and outputs dual residuals. Online discrimination is completed using correlation robustness strength + residual divergence adaptive weight + sliding window threshold, achieving an interpretable, traceable, and more robust anomaly identification process for long-term monitoring under working condition drift.

The present invention is entitled "An Adhesion Additive, a Photoresist Composition, and its Preparation Method and Application", belonging to the field of photoresist technology. The technical problem to be solved is: to provide an adhesion additive that improves the adhesion of Halftone photoresist compositions and reduces the sensitivity of Halftone photoresist compositions. The key points of the technical solution are: an adhesion additive comprising at least one of the compounds of formula (5), formula (6), formula (7), and formula (8).

The application provides a gas concentration detection method and device, terminal equipment and medium, comprising: obtaining an original spectrum absorption signal of a to-be-detected gas; performing filtering and smoothing processing on the original spectrum absorption signal, and extracting an upper envelope line of the processed signal; identifying a gas non-absorption wave band in the upper envelope line, calculating a reference amplitude value according to the maximum value and the minimum value of the envelope line in the gas non-absorption wave band; constructing a baseline according to the reference amplitude value, and determining a target gas absorption segment on the upper envelope line by using the baseline; taking the length of the target gas absorption segment as a concentration inversion characteristic value representing the gas absorption intensity, and detecting the gas concentration of the to-be-detected gas based on a pre-constructed concentration inversion model and the concentration inversion characteristic value. The application can improve the accuracy of gas concentration measurement.

The present application relates to the technical field of enameled aluminum wire processing, and particularly relates to a drawing and annealing continuous integrated enameled aluminum wire processing device and process, which comprises a first installation positioning table and a second installation positioning table, a first guide wheel set is arranged on the first installation positioning table, a second guide wheel set is arranged on one side of the second installation positioning table, and an annealing furnace is arranged between the first installation positioning table and the second installation positioning table; a micro-bending and film-breaking mechanism is arranged at a corner of the second guide wheel set away from the winding drum, and the micro-bending and film-breaking mechanism comprises a backflushing and absorbing module and a micro-bending and film-breaking module. Compared with the prior art, the micro-bending and film-breaking mechanism is arranged, so that the wire is slightly bent and slightly disturbed on the surface oxide film / pollution layer during normal operation, the ratchet pawl is locked with the ratchet wheel, and the buffer wheel is stably kept in the working position, so that the micro-bending amount is controllable, and the line drift caused by the tension micro-disturbance is avoided.

This invention discloses a method for locating the sub-pixel intersection point of two straight lines based on robust estimation and local refinement, comprising the following steps: S10, defining the Region of Interest (ROI) and extracting sub-pixel edges at multiple scales; S20, initial fitting of the straight lines based on robust estimation; S30, refining the intersection region and assessing uncertainty. This invention achieves intersection point location accuracy superior to the pixel level; significantly reduces the impact of abnormal edge points, missing local edges, and interference near the intersection point on the location results; has a high degree of automation, reducing reliance on manual parameter adjustments; and can output the intersection point coordinates while providing an estimate of its location uncertainty, providing a decision-making basis for downstream applications.

The present application relates to the technical field of welding material, and discloses a kind of ultra-low carbon bainite high-strength steel matched flux-cored wire for high-speed train bogie and welding method.The flux-cored wire of the present application includes outer skin and flux filled in the outer skin, and the flux includes the following components by mass fraction: sodium fluoride 23-28%, CaCO3 8-15%, sodium titanate 12-15%, natural rutile 5-10%, potassium feldspar 4-7%, electrolytic manganese 6-10%, ferrosilicon 4-6%, nickel powder 6-9%, copper powder 0.5-0.8%, molybdenum iron 2.5-4%, niobium iron 0.2-0.3%, titanium iron 1.2-1.8%, and iron powder 8.6-13.1%.The flux-cored wire of the present application is used for welding of the steel in the manufacture of high-speed train bogie frame, and the weld metal has excellent strength, toughness and corrosion resistance, the weld is fine and has low risk of fatigue cracking, and meets the high standard requirements in the manufacture and service of high-speed train bogie.

This invention discloses a cefoperazone sodium and sulbactam sodium composition and its preparation method, comprising the following steps: preparing a chitosan-β-glycerophosphate sodium colloidal solution; mixing dry ice and sorbitol evenly, then adding the mixture to the colloidal solution, freezing, heating, and drying under reduced pressure to obtain chitosan-β-glycerophosphate sodium nanospheres; slowly adding cefoperazone sodium, sulbactam sodium, and chitosan-β-glycerophosphate sodium nanospheres to water for injection, stirring to dissolve; adjusting the pH to 7.1-7.5, adding an adsorbent for adsorption and filtration, adding dry ice; freeze-drying to obtain a cefoperazone sodium and sulbactam sodium mixed powder. The nanospheres of this invention, with a certain size gradient, are beneficial for the uniformity of the mixed powder of cefoperazone sodium and sulbactam sodium, resulting in a longer-lasting efficacy, better stability, lower hygroscopicity, and also playing an antibacterial role.

The application discloses a microphone array sound pickup method, electronic equipment and computer readable storage medium. The sound pickup method comprises the following steps: fixed beam forming is performed on a voice signal received by a microphone array, and a beam forming direction of the microphone array is pointed to an estimated expected direction of arrival; blocking processing is performed on the processed voice signal, so that the voice signal from the expected direction of arrival is blocked, and only the voice signal from a non-expected direction of arrival is reserved; the processed signal is used as a reference signal, a first filter is used to filter out the signal from the non-expected direction of arrival and reserve the signal from the expected direction of arrival; and an update factor of the first filter is calculated according to the following formula (I), wherein the update factor of the first filter of the mth microphone channel is SNR f,d (ω, l) is Y f,d (ω, l) is a signal-to-noise ratio of Y f,d (ω, l) is a delay signal obtained by delaying the signal processed in the step S1, SNR m (ω, l) is a signal U m (ω, l) is a signal-to-noise ratio of Y. The application further improves voice quality.

The application discloses an anti-data-damage heterogeneous federated learning system and method, which first adopts a robust data enhancement strategy in the local update stage, minimizes the adverse effects of local damage by performing multiple random data enhancement operations, and enables the model to learn rich local knowledge. Secondly, a robust reweighting communication method is designed in the collaborative update stage, which realizes communication between heterogeneous models while reducing the damaged knowledge obtained from other models. Finally, for the damaged feedback of unreliable clients, the application minimizes the learning of damaged knowledge by dynamically adjusting the contribution of the clients. The application achieves this goal by using a public data enhancement strategy that dynamically adjusts the contribution of the clients according to their ability to cope with data damage. The application can significantly improve the robustness to various data damage, thereby improving the performance of model heterogeneous federated learning.

This invention relates to an all-solid-state flexible narrowband dynamically tunable filter device and its fabrication method. The filter device includes a substrate layer and a filter structure layer disposed thereon. The substrate layer includes a flexible transparent substrate and an adhesive layer. The filter structure layer, from bottom to top, consists of a first metal reflective layer, a functional dielectric cavity layer, a second metal reflective layer, and an anti-reflection layer, collectively forming an optical resonant cavity. The functional dielectric cavity layer includes a first functional dielectric layer, a multi-order resonance suppression layer, and a second functional dielectric layer, with the suppression layer embedded between the two functional dielectric layers. The first and second functional dielectric layers are electrochromic materials, and the physical thickness of the multi-order resonance suppression layer is smaller than that of the two dielectric layers, serving as an optical perturbation layer rather than constituting an independent resonant unit. This invention, through the synergy of an all-solid-state design and standing wave perturbation of an extremely thin suppression layer, suppresses high-order mode crosstalk within a wide tuning range without mechanical displacement, achieving stable single-peak output and possessing excellent flexible conformal integration capabilities and high reliability for long-term operation.

This invention discloses a polyhedral brain PET detector with adjustment function, belonging to the field of medical testing equipment technology. It includes an external support structure, a detection structure, semi-annular pads, and an adjustment module. The detection structure is installed within the external support structure. The detection structure includes a top mounting plate, detection module one, detection module two, detection module three, and a structural assembly frame. Multiple sets of detection modules one, two, and three are installed between the top mounting plate and the structural assembly frame. The top mounting plate, structural assembly frame, detection modules one, two, and three are distributed in a large rhomboid semi-cube shape. Two semi-annular pads are symmetrically installed on the lower side of the external support structure, forming a neck limiter between them. An adjustment structure is installed on the upper side of the external support structure. Through this method, while allowing for a certain degree of deformation adjustment and improving the user's head geometric fit, the peripheral field of vision is effectively reduced.

This invention relates to a multi-field-of-view coding method and system based on intermediate image plane polarization mask modulation, belonging to the field of space optics technology. It addresses the technical problems in existing technologies where feature aliasing and mutual interference easily occur when multi-field-of-view signals are superimposed, and where encoded features are easily distorted in the presence of optical errors or system deviations. The coding method includes the following steps: multi-field-of-view division; polarization coding parameter allocation; polarization modulation implementation; optical folding and signal superposition; and coding result output. The multi-field-of-view coding method and system based on intermediate image plane polarization mask modulation of this invention, by introducing polarization modulation in the imaging stage, maps multi-field-of-view spatial information to the polarization dimension, realizing an extension from traditional "scalar intensity coding" to "vector polarization coding."

This application discloses a miniaturized thin-film chip coupler, including a PCB board and a first coupling line and a second coupling line disposed on the PCB board. The first coupling line has an input section and a direct output section at its two ends, respectively. The second coupling line has a coupling output section and a thin-film resistor at its two ends, respectively. Multiple first branches and multiple second branches protrude from the opposite ends of the first and second coupling lines, respectively. Multiple third coupling branches and multiple fourth coupling branches protrude from the facing ends of the first and second coupling lines, respectively. A pair of fifth coupling branches protrude from the ends of the first coupling line facing the second coupling line, and a pair of sixth coupling branches protrude from the ends of the second coupling line facing the first coupling line. This miniaturized thin-film chip coupler, through structural design, simplifies the circuit structure, improves product consistency, and can meet the requirements of mass production while reducing costs.

This invention discloses an ADS behavioral-level model construction method for a high-voltage battery filter, relating to the field of electromagnetic compatibility simulation and modeling technology for electric drive systems in new energy vehicles. The method involves: identifying the characterization object, clarifying the test objective, planning frequency sweep parameters, and defining ports and excitation methods; measuring the differential-mode and common-mode scattering parameters of the filter; storing the measured differential-mode and common-mode scattering parameters in a standard RF data format to form a traceable dataset; performing reference surface preprocessing on the scattering parameter data to complete mode parameter conversion or unified representation of port parameters; performing mathematical fitting or state-space identification with stability, causality, and passive constraints on broadband parameters to obtain a computable behavioral-level model within the target frequency band; and encapsulating the behavioral-level model into a reusable device model in the ADS simulation platform, completing port mapping, reference impedance configuration, and modal interface definition. This invention aims to reduce the sensitivity of prediction results to material parameter uncertainties.

The application relates to the field of gas detection, in particular to a quartz tuning fork gas sensing device based on diamond-like coating enhancement, which comprises sequentially connected laser signal emitting units, light absorption cells, lenses, quartz tuning forks and electric signal collecting units, the surface of the quartz tuning fork is coated with a diamond-like coating; target light signals generated by the laser signal emitting units are transmitted to the light absorption cells; the light absorption cells contain target gases to be detected, and light signals interact with the target gases in the light absorption cells; the lenses focus the light emitted from the light absorption cells to the surface of the quartz tuning fork coated with the diamond-like coating. Compared with the prior art, the application can sensitively capture slight changes caused by trace gases, convert the changes into obvious electric signals, and the electric signals have a good linear relationship with the gas concentration, so that low-concentration gases can be measured with high precision.

This invention discloses an input-constrained stabilization control method for a TORA system affected by uncertain disturbances, relating to the field of engineering vibration control technology. The method includes: establishing the dynamic equations of the TORA system; constructing a Model-Assisted Reduced-Order Extended State Observer (MRESO) to dynamically estimate lumped disturbances in each subsystem online; designing a virtual control law for the translational trolley subsystem based on the backstepping method, and processing the virtual control law using a tracking differentiator to obtain a smooth differential signal; designing an actual control law for the rotating ball subsystem without considering input constraints; using the lumped disturbance as a feedforward compensation quantity to compensate the actual control law, obtaining the compensated control quantity; and inputting the compensated control quantity into a saturated approximation function for mapping to generate the final bounded control command, which is then applied to the actuator of the TORA system. This invention effectively reduces the sensitivity to system parameter uncertainties by introducing dimensionless scaling.

The utility model discloses a kind of ball grid array packaging structure and PCB of guaranteeing impedance continuity, by the asymmetric spacing of control signal unit and two side ground unit, so that signal unit is offset to one side ground unit, the trace channel of the other side of signal unit is widened, the trace channel of widened not only can double trace, but also can be with thicker line width, so that the characteristic impedance of differential line is consistent on signal transmission path, significantly reduce signal reflection and waveform distortion risk, especially suitable for high-frequency, high-speed signal transmission scene, can ensure signal integrity.

This invention relates to an npn-type solar-blind ultraviolet detector using Ga2O3 as the light-absorbing layer and its fabrication method. The detector, from bottom to top, comprises a GaN substrate, a CuI hole transport layer, a Ga2O3 solar-blind ultraviolet absorption layer, a Ti electrode layer, and an Au electrode layer. An In electrode layer is disposed on one side of the CuI hole transport layer on the GaN substrate. This invention uses n-GaN, which has high electron mobility, good thermal stability, and a mature fabrication process, as the bottom substrate; p-CuI, with high hole concentration, high mobility, and excellent p-type conductivity, and good energy level matching with n-GaN and subsequent materials, as the hole transport layer; and n-Ga2O3, with an ultrawide bandgap, high chemical stability, and a high absorption coefficient for solar-blind ultraviolet light, as the light-absorbing layer. Combining the low contact resistance of the bottom In electrode with the high contact area of ​​the top Ti / Au interdigitated electrode improves carrier collection efficiency.

This invention discloses an online scalable configuration method and system for dynamically changing time-sensitive networks (TSNs), relating to the Internet of Things (IoT) field. The invention proposes an efficient inter-flow conflict detection mechanism based on multi-level flow grouping. By using a correlation analysis of flow period and offset, it avoids traditional conflict detection methods based on link maximal cliques and link hyperperiods, enabling rapid response to large-scale data flow conflict detection needs. It designs an online incremental method based on decoupling routing and scheduling, as well as offline pre-routing, accelerating the computation speed of routing and scheduling schemes while ensuring scheduling space. This invention reduces the computational complexity of data flow set hyperperiod sensitivity and the maximum link slot occupancy in TSNs, accelerating online scheduling and providing efficient conflict detection support for online scalable configuration.

This invention discloses a submarine cable acoustic monitoring system based on scattering-type fiber optic fingerprint technology, belonging to the field of fiber optic sensing technology. The system includes a light source module, a transmitting module, a submarine cable fiber optic sensing unit, a dual-balanced detector module, and a signal processing module. In the light source module, the continuous light output from the laser is split into a probe light and a local reference light by a dynamic beam splitter. The probe light is modulated and injected into the submarine cable fiber, and the resulting backscattered Rayleigh light carries acoustic information back. The dual-balanced detector module has a built-in light intensity monitoring unit that monitors the light intensity of the reference light and the scattered light in real time. By comparing the two intensities, it sends a feedback control signal to the dynamic beam splitter, dynamically adjusting the splitting ratio to maximize the interference term intensity coefficient, thereby improving the signal amplitude and sensing sensitivity. This invention solves the problems of limited sensing distance and high laser linewidth requirements in traditional systems, and is suitable for long-distance, high-reliability submarine cable acoustic event monitoring and location in deep-sea environments.

The application discloses a CTLE (Continuous Time Linear Equalizer) based on a single amplifier and having a DC offset and common-mode voltage modulation function, and mainly solves the technical problem that the DC working point of the existing CTLE is easily affected by process deviation, input signal common-mode voltage and current mismatch, and an additional DC offset elimination loop is needed, thereby increasing the design and area complexity. The CTLE comprises a first-stage equalization unit EQ1, a second-stage equalization unit EQ2, a low-pass filter LPF, a frequency compensation unit and an offset and common-mode multiplexing amplifier OCMA. The CTLE adopts a single offset and common-mode multiplexing amplifier OCMA, simultaneously completes DC offset elimination and DC output control, and can reduce the design and area complexity.