56results about How to "Avoid coupling" patented technology

The utility model relates to a cross-shaped three-dimensional force touch sensor. The sensor comprises a contact, a base and four sensing units, the square base comprises a platform and a PCB (Printed Circuit Board); wherein a square groove is formed in the middle of the upper surface of the platform; the PCB is in a frame shape and covers the outer edge of the square groove. The structure of each sensing unit is composed of a TMR element, a vertical plate, a square permanent magnet and an iron gallium wire; the vertical plate is fixed in the middle of the inner wall of the square groove, and the TMR element is attached to the outer wall of the vertical plate; one end of the iron gallium wire passes through the through hole and is connected with the TMR element, and the other end is inserted into a circular hole of a pillar 4 of the contact. The four iron gallium wires of the four sensing units are jointly inserted into the four round holes of the contact pillar 4 to form a cross structure. The sensor provided by the utility model has the advantages of small overall size, high sensitivity and strong stability, and also shows good dynamic performance, and has short response time and recovery time.

The invention discloses a multi-output high-performance integrated laser driver driving method, relates to the technical field of integrated laser driver driving, and aims to solve the problem of poor signal stability of a multi-output channel of an existing laser driver. A monitoring module is installed on each output channel, the quality of output signals and the running state of a driver are monitored in real time, immediate feedback is provided, the reliability of the system is ensured, a driver control strategy is automatically adjusted and corrected according to early warning data, it is ensured that the system can be rapidly recovered to the optimal state after an abnormality occurs, and the reliability of the system is improved. The self-adaptive capability of the system is improved, the system performance can be further optimized through a secondary driver control strategy obtained through automatic adjustment and correction, manual intervention is reduced, the intelligent level of the system is improved, and a personalized control strategy for a specific application scene can be generated through deep performance analysis. Therefore, the driver is better in performance in a special application environment.

The invention discloses a preparation method and application of an efficient migration-resistant hindered phenol antioxidant. The preparation method comprises the following steps: dissolving a hindered phenolic compound and an epoxy compound in a solvent to carry out ring-opening reaction, and then further reacting the carboxyl-activated hindered phenolic compound with a ring-opened product to obtain the novel antioxidant with 4-6 hindered phenolic hydroxyl groups in the structure. According to the novel antioxidant disclosed by the invention, on the basis of fully utilizing the capability of capturing free radicals by hindered phenolic hydroxyl, the oxidation resistance of the antioxidant is improved by changing a para-substituent structure, the migration resistance of the antioxidant is improved by changing the molecular weight and the molecular structure, and the service life of the antioxidant in a high polymer material is prolonged. The novel antioxidant has the advantages of simple process preparation, high efficiency, migration resistance and the like.

The invention discloses a high-stability controllable hydraulic rotary actuator low-speed stability performance testing device and method. The testing device comprises a mechanical system, a hydraulic system and an electrical system. Wherein the mechanical system comprises a rack, a winch, a twisted rope and the like, the hydraulic system comprises a hydraulic cylinder, a tested element, a fixed-displacement radial plunger pump and the like, and the electrical system comprises a load feedback system and a flow feedback system. According to the testing device, a highly controllable hydraulic winch based on a hydraulic cylinder is designed, and stable loading torque is provided; a proportional servo hydraulic system is established, and the stability of load torque and input flow can be greatly improved through the design of a two-stage flow controller. The stable loading torque and the stable input flow can ensure the stable and accurate measurement of the large-torque ultra-low-speed hydraulic rotary actuator.

The utility model provides an energy storage high-voltage box confluence cabinet, comprising a cabinet body, a plurality of high-voltage boxes, a confluence assembly, a protection member and a lightning protection assembly, the plurality of high-voltage boxes are arranged in the cabinet body, and the positive and negative input ends of the plurality of high-voltage boxes are respectively and electrically connected with the positive and negative output ends of corresponding energy storage batteries; the protection part is arranged in the cabinet body, the positive and negative output ends of the plurality of high-voltage boxes are electrically connected with the positive and negative input ends of the protection part through the convergence assembly, and the positive and negative output ends of the protection part are correspondingly and electrically connected with the positive and negative input ends of the energy storage converter respectively; the lightning protection assembly is arranged in the cabinet body, the positive input end and the negative input end of the lightning protection assembly are correspondingly and electrically connected with the positive output end and the negative output end of the protection piece respectively, and the grounding end of the lightning protection assembly is grounded. And the damage to equipment on the line caused by sudden generation of peak current or voltage on the line is avoided, and the safety performance is improved.

The invention discloses a 4D tensor-based RIS-assisted millimeter wave MIMO-NOMA Internet of Vehicles system channel estimation method, and aims to reduce the influence of serious Doppler frequency shift and sight line path blockage on communication performance, first, a 5G subframe division scheme without changing a standard 5G frame structure is proposed by introducing concepts of aggregation time slot and half time slot, and a 5G subframe division scheme without changing a standard 5G frame structure is provided; modeling of the received signal is facilitated; then, modeling the received signal into a four-order tensor so as to separate channel parameters into four factor matrixes, thereby avoiding parameter coupling; then, the tensor is decomposed in a closed-form solution form; then, carrying out one-dimensional search on a factor matrix obtained by decomposition to extract channel parameters; after channel parameters are obtained, a least square problem is constructed to obtain channel path gains, and solving of a scaling matrix is avoided; finally, experiments verify that the method can accurately estimate the parameters of the channel, and excellent demodulation performance can be realized based on the parameters of the channel.

The application provides a multi-intention interactive game decision method and system for automatic driving path planning, which fuses current environment information and current state information by acquiring the current state information and the current environment information, extracts state features and intention features of a moving target from current scene features, fuses the intention features of the state features of the moving target, constructs a game relationship graph, calculates attention weights between an automatic driving vehicle and the moving target, weights and aggregates a value vector by a prediction probability and the attention weights of different preset intention features executed by the automatic driving vehicle, performs feature splicing, nonlinear conversion and decoding on the aggregated features, evaluates each game candidate trajectory, and selects a game candidate trajectory with the maximum game value score as the automatic driving path; the application reduces uncertainty in the interactive process, avoids the risk of sudden braking or collision caused by misjudgment, and has stronger environmental adaptability and generalization ability.

The invention relates to the field of robots, in particular to a four-rope-driven snakelike arm robot which comprises an arm body and a driving part, the arm body is formed by sequentially and movably connecting a plurality of connecting rods, every two adjacent connecting rods are connected through a cross shaft to form a joint, and every two adjacent connecting rods freely swing in the up-down direction and the left-right direction through the corresponding cross shaft. The driving part comprises a plurality of driving units, a driving box for loading the driving units and a fixing rod arranged at the front end of the driving box, and the first joint in the arm body is connected with the fixing rod; the four-rope-driven snake-shaped arm robot structure comprises a plurality of connecting rods, each connecting rod is in linkage with two driving units at the same time, each driving unit is provided with two traction ends, the two traction ends are connected to the two opposite ends of the corresponding connecting rod respectively, and the two traction ends move oppositely to drive the corresponding connecting rods to swing up and down or left and right. The number of motors is equal to the number of joint degrees of freedom, and driving redundancy is avoided.

The invention discloses a method and system for judging a network connection state based on vehicle-mounted Aop annotation, and belongs to the technical field of computers, and the method comprises the steps: 1, introducing an AsepcJ configuration environment; 2, compiling a user-defined annotation of network judgment; 3, compiling a section logic code of network judgment; 4, executing local static compiling of the project; and 5, carrying out network judgment at the specific business by using the annotation. According to the method, network judgment can be added under the condition that original service codes are not modified on the basis of AOP annotation network judgment; by inserting the network judgment at the specific connection point, the use experience of the user can be improved, and when no network exists, media playing is performed, the user is directly reminded of the network state, and a dialog box is popped up to guide the user to open network settings.

The present invention discloses a half-wave alternating AC-AC converter topology and a control method thereof, which relates to the technical field of power supply system, and includes three phase unit circuits with the same structure, each phase unit circuit includes a symmetrical input side converter and an output side converter, and is respectively connected to AC systems of different frequencies; wherein a half-wave shaping switch group includes a positive terminal, a negative terminal and an AC output terminal, one end of a variable frequency half-wave generation module is connected to the positive terminal, connected to the positive terminal of the other side through a filter inductor, and the other end is connected to the negative terminal of the other side through a negative terminal, and both ends are connected to the AC system through an AC output terminal; the variable frequency half-wave generation module outputs a step sine half wave, and the half-wave shaping switch group performs translation and flipping operations on the step sine half wave to obtain a shaped half wave, and obtains an AC side phase voltage sine wave based on the shaped half wave within a cycle. Frequency isolation of the AC systems on both sides is achieved, and the output of a complete AC side phase voltage sine wave is achieved.

The present invention provides a rare earth-doped optical fiber for suppressing mode instability effects and a preparation method thereof, and relates to the technical field of special optical fiber preparation. The preparation method first deposits a channel region with a low refractive index in a quartz tube, and then sequentially prepares a core passive region and a core active region with different doping components to achieve different thermo-optic coefficients in the local region of the core. The present invention reduces the thermo-optic coefficient of the optical fiber and weakens the nonlinear inter-mode coupling effect by introducing a negative thermo-optic coefficient material, thereby effectively suppressing MI; at the same time, the method of rare earth ion center doping is adopted to reduce the high-order mode gain in the case of a large core, and then suppress the generation of high-order modes through a mode competition mechanism, thereby increasing the proportion of the fundamental mode; the low numerical aperture and channel structure design enable the optical fiber to have a higher high-order mode loss, suppress the fundamental mode-high-order mode coupling effect, further increase the MI threshold, and improve the beam quality.

The utility model discloses a terminal protection device and a terminal, and belongs to the technical field of terminals. A first position of an antenna section in the terminal is connected with a grounding switch in the protection device, and the first position is located at a non-endpoint position of the antenna section; the protection device obtains the use condition of the antenna section, wherein the use condition comprises power and / or temperature; and under the condition that the use condition meets an antenna protection condition, the grounding switch is switched on to change the working frequency of the antenna section, and the antenna protection condition comprises that the power exceeds a power threshold value and / or the temperature exceeds a temperature threshold value. Namely, the grounding switch is connected to the first position of the antenna section in the terminal, so that the grounding switch is switched on under the condition that the terminal needs to be protected, the working frequency of the antenna section is changed, the resonance state of the antenna section is broken, the antenna section is prevented from being coupled with high-intensity electromagnetic waves, and the antenna section is prevented from being heated and damaged.

The invention discloses a laboratory sunlight energy-saving illumination management system, belongs to the technical field of energy-saving illumination, and solves the problems that a solar simulator bus is out of control due to bidirectional power conflict, an experiment is failed due to light ripple pollution, and energy conservation is more wasted. Comprising a multi-phase magnetic energy cyclic matrix module which generates a controlled multi-phase alternating current energy field; the rotating field transformer energy transfer device module is used for directionally distributing energy in a multi-phase alternating current energy field to each output channel according to a real-time instruction; the distributed virtual ground bus framework module is used for maintaining the power supply reference potential of each output channel; and the digital pre-distortion compensator module is used for performing nonlinear and memory effect compensation on an input instruction and sending the compensated instruction to the multi-phase magnetic energy cyclic matrix module. According to the invention, the rotating magnetic field is coupled with the distributed wireless energy network to decouple the power flow, the noise is suppressed, the spectrum is independent, the energy is saved, and repeated experiments are avoided.

The invention relates to a satellite-borne receiving device and a signal receiving method for resisting malicious interference of an LEO satellite uplink. The satellite-borne receiving device comprises a beam forming network which is used for generating an LEO satellite beam pointing to a target area, receiving an uplink signal sent by a user, reducing the dimension of the uplink signal into an N-dimensional link receiving signal and outputting the N-dimensional link receiving signal; and the square phase shifter network is used for performing interference elimination on the received signals of the links, generating processing signals of the corresponding links and outputting the processing signals to the digital processing unit for signal estimation, and the processing signals output by each link are aggregation of the received signals of all the links after phase shifting. According to the invention, the analog front end with a two-stage structure is designed, so that the function decoupling of beam forming and interference elimination is realized, the interference is completely eliminated at the analog front end, and the algorithm complexity is reduced at the same time.

The utility model provides a charger, which is helpful for realizing compact design of each part in the charger, fully utilizing limited space and further helpful for the development of the charger towards the miniaturization direction. Meanwhile, the transformer and the AC pin are separated through the first capacitor, electromagnetic interference generated by an electronic component can be effectively prevented from being coupled to the AC pin in the charging state, the electromagnetic interference is further prevented from influencing the mains supply through the AC pin, and the charging performance of the charger is guaranteed; noise generated during operation of electronic components can be isolated, the noise is prevented from being radiated to the surrounding environment, the operation noise of the charger in the charging state is reduced, and the user experience is improved.

The present invention provides a radial hybrid magnetic bearing assembly and a motor having the same. A permanent magnet is disposed in the first end of the outer stator core; a first radial vertical stator assembly is disposed in the second end of the outer stator core; a first radial horizontal stator assembly is disposed in the outer stator core and is located between the permanent magnet and the first radial vertical stator assembly; the rotor assembly includes a rotating shaft, and the first radial vertical stator assembly and the first radial horizontal stator assembly are used to generate an independent control magnetic field, and the control magnetic field is used to control the bias magnetic field to control the movement of the rotating shaft in a preset direction. This arrangement can avoid coupling inside the radial hybrid magnetic bearing assembly, and effectively improve the stability and reliability of the radial hybrid magnetic bearing assembly.

The present application relates to the intelligent control technology field of continuous production and chemical process of petroleum cementing additives, in particular to a continuous production big data analysis and regulation method for high-temperature stabilizer of cementing slurry, comprising: collecting process state time series data and synchronous control instruction data of a reaction kettle, a jacket heat exchange loop, a stirring driving part and an online viscosity detection part and aligning; constructing a normal working condition benchmark model based on polymerization kinetics constraints and jacket heat exchange heat balance constraints; loading disturbance parameter forward deduction to generate a set of theoretical abnormal states; determining a target abnormal state through similarity calculation of real residual vector and theoretical residual vector set; generating and outputting regulation instructions to a control execution end; the present application realizes stable closed-loop regulation and control of the continuous production process, and reduces the risk of single-point threshold misregulation.

This utility model discloses a light source module and a fiber optic scanning display device. The light source module includes: a light source; a pigtail disposed in the outgoing light path of the light source; the pigtail includes a fiber optic fixing structure and a fiber; the fiber protrudes from the end face of the fiber optic fixing structure, and the fiber coupling end face is an inclined end face. In the above solution, by having the fiber protrude from the end face of the fiber optic fixing structure, stray light caused by the adhesive used to bond the fiber can be avoided, thereby reducing image stripes and noise caused by the back-propagation of stray light into the laser, thus alleviating the technical problem of image quality defects existing in the prior art and achieving the technical effect of improving image quality.

An electronic device including a conductive member includes a side frame surrounding a space between a first surface and a second surface parallel to the first surface; a first metal frame and a second metal frame disposed at the side frame; a segmented unit disposed between the first metal frame and the second metal frame; a flexible display disposed on the first surface; a protective cover disposed in a direction extending from a side surface toward the first surface and covering at least a portion of the flexible display; and a conductive member disposed on a surface of the protective cover facing the flexible display, wherein the conductive member can have a segmented area corresponding to the segmented unit and include a first tip portion and a second tip portion capable of transmitting an electric charge.

The application provides an electronic device, which comprises an antenna radiator, a first feeding port, a second feeding port, a ground plate and a conductor; a first end of the antenna radiator is electrically connected to the ground plate through the conductor; the first feeding port is arranged at a second end of the antenna radiator and is electrically connected to the second end of the antenna radiator, and is used for forming a first antenna; the second feeding port is arranged at a low-resistance area of the antenna radiator and is electrically connected to the low-resistance area of the antenna radiator, and is used for forming a second antenna; wherein the first antenna and the second antenna are antennas in the same frequency band.

The present application provides an APP web page jump method, device, electronic device and storage device, the method comprising: obtaining the current business event information of the APP; wherein the current business event information is used to characterize the functions and page interaction logic of the current business of the APP; based on the preset webview component, determining the target web page routing information according to the current business event information; calling the corresponding target web page routing according to the target web page routing information; using the target web page routing to call the corresponding target web page component, so that the APP jumps to the corresponding target web page. The method provided by the above scheme realizes the split calling of the business by componentizing the web page and directly calling the web page component through the web page routing, avoiding the coupling of the page interaction logic of the webview component, and reducing the difficulty of implementing the APP web page jump.

The application belongs to the technical field of catalyst material preparation, and provides a single-atom porous material catalyst, a preparation method thereof and application of the single-atom porous material catalyst in a methane aerobic conversion reaction. The application introduces reaction gas containing a gaseous metal precursor, a carbon source and a nitrogen source into a plasma reaction chamber, and uses plasma for chemical vapor deposition to obtain the single-atom porous material catalyst. The preparation method provided by the application can select gaseous, liquid or solid raw materials as a source of the gaseous metal precursor. The application can prepare various types of single-atom porous material catalysts, and enriches the application range of the single-atom porous material catalysts. The application realizes control of the particle size, morphology and distribution of the single-atom porous material catalyst by adjusting reaction parameters, and the prepared single-atom porous material catalyst can be used in the methane aerobic conversion reaction. Therefore, the preparation method provided by the application is simple in operation, strong in universality and has a good industrial application prospect.

The invention discloses a digital time taming and signal synchronization correction method, which comprises the following steps that: a reference node sends a synchronization sequence, and the synchronization sequence modulates the reference node time at the sending moment; the synchronization node receives the synchronization sequence and obtains synchronous digital time by adopting a digital time taming mode; and the synchronous node realizes synchronous correction of the signal based on the obtained synchronous digital time. According to the digital time taming and signal synchronization correction method provided by the invention, a burst transmission mode is adopted to send a synchronization signal, and a receiving node rapidly captures and adopts a dynamic interval loop tracking method, so that flexible channel time division multiplexing can be realized. The synchronous time is obtained in a digital time taming mode, synchronous correction of the signals is achieved through resampling on the basis of the synchronous digital time, the problem that a sampling clock is not synchronous is prevented from being coupled to a subsequent signal processing flow, and meanwhile dependence on a programmable crystal oscillator is also avoided.

The utility model discloses a double-chamber circulating flow guide CPU water-cooling radiator, which comprises a water-cooling head, a circulating pipeline and a water pump, and is characterized in that a main chamber and an auxiliary chamber which are mutually independent are arranged in the water-cooling head, a cold discharge piece connected with the main chamber and the auxiliary chamber is embedded on the outer side of the water-cooling head, a wavy flow guide plate is arranged in the auxiliary chamber, and the water pump is connected with the main chamber and the auxiliary chamber. The main cavity and the auxiliary cavity are communicated through the flow guide plate to form a circulation path, a heat absorption substrate making contact with a CPU is arranged at the bottom of the main cavity, and the circulation pipeline is communicated with the main cavity, the auxiliary cavity and the water pump to form a double-cavity circulation flow guide structure. Through double-cavity independent flow guide, intelligent flow control, efficient heat exchange structure design and visual monitoring, the heat dissipation efficiency and reliability are remarkably improved, and the heat dissipation requirement of a high-performance CPU is met.

The invention provides an optical module, which comprises an upper shell, a lower shell, a circuit board, an optical connection part arranged on the circuit board and an optical part connected with the optical connection part through an optical fiber, and is characterized in that a cavity formed by the upper shell and the lower shell is only provided with an opening for placing the optical connection part and a golden finger on the circuit board; a limiting hole, an installation hole not communicated with the limiting hole and a bonding pad set located on one side of the installation hole are formed in the circuit board, the optical component comprises a fixing base embedded into the installation hole and an optical assembly installed on the fixing base, the top face of the fixing base is fixed to the back face of the circuit board in an adhesive mode, and a limiting boss embedded into the limiting hole is arranged at one end of the fixing base. A gap is formed between an optical device of the optical assembly and the limiting boss, the optical device is electrically connected with the bonding pad set through bonding wires, and the bonding wire height of the optical device is equal to the installation height of the bonding pad set. According to the optical module, the optical connection part and the golden finger are arranged on the same side, so that synchronous connection of the photoelectric port and the upper computer is realized, and the coupling precision of the optical port is improved.

The embodiment of the utility model provides an antenna assembly and an electronic device, and the antenna assembly comprises a first antenna and a second antenna which are arranged at an interval; the backflow branch knot is arranged between the first antenna and the second antenna; the backflow branch knot comprises a first sub branch knot and a second sub branch knot which are arranged at an interval, the first sub branch knot and the second sub branch knot are electrically connected with the first antenna and the second antenna, and the current directions of the first sub branch knot and the second sub branch knot are opposite. According to the utility model, the problem that the antenna assemblies in the terminal influence each other in the prior art is solved, and the effect of improving the isolation between the antennas is further achieved.

The application discloses a kind of multi-in-one integrated electric drive, noise reduction design method and electric forklift in the field of electric forklift integrated electric drive.The multi-in-one integrated electric drive includes two-in-one high-speed reducer, the two-in-one high-speed reducer includes reducer shell, walking gear train and hydraulic gear train, first chamber and second chamber are formed in reducer shell independently, by walking gear train and hydraulic gear train are respectively arranged in first chamber and second chamber, can effectively avoid the loss of two simultaneous work stirring oil turbulence.Through setting stator installation stopper, rotor installation bearing chamber and bolt hole in the side of reducer shell, walking motor and hydraulic motor are simultaneously integrated and installed on reducer shell, the front end cover of motor in traditional forklift multi-in-one assembly is saved, effectively save forklift installation space.The noise reduction design method proposed in the application can significantly improve the NVH performance of integrated electric drive.

The present invention provides a quadrotor sliding mode anti-interference control method based on acceleration feedback, including: S1 determining the parameters of a quadrotor platform, and establishing a quadrotor dynamics model with uncertain interference based on Newton-Euler equations according to the acquired parameters; S2 solving the input torque of three channels of the quadrotor according to the established model; S3 acquiring the acceleration feedback term; S4 correcting the system output according to the acquired acceleration feedback term, wherein the system output includes attitude angle expectation and the torque of three channels; S5 completing the control of the quadrotor platform according to the corrected system output. The present invention contributes to the simple implementation of the anti-interference control of the quadrotor unmanned aerial vehicle and improves the anti-interference ability of the anti-interference control of the quadrotor unmanned aerial vehicle.

The invention provides an optical module, which comprises an upper shell, a lower shell, a circuit board, an optical component and an optical connecting component arranged on the circuit board, and is characterized in that a cavity formed by the upper shell and the lower shell is only provided with an opening for placing the optical connecting component and a golden finger on the circuit board; a mounting hole for embedding the optical component and a bonding pad group positioned on one side of the mounting hole are formed on the circuit board, and an optical device of the optical component is electrically connected with the bonding pad group through routing; the optical connection part comprises an optical fiber fixing part, a plug connector and an insertion core assembly connected with the plug connector, the optical fiber fixing part comprises a connecting part and an insertion part which are connected, a containing cavity for the plug connector to be inserted is formed in the connecting part, a cavity communicated with the containing cavity is formed in the insertion part, and the insertion core assembly is inserted into the cavity through the plug connector. And an optical fiber connected with the optical component passes through the accommodating cavity and is optically connected with the insertion core assembly. According to the optical module, the optical connection part and the golden finger are arranged on the same side, so that synchronous connection of the photoelectric port and the upper computer is realized, and the coupling precision of the optical port is improved.

The utility model discloses a dual-driving-part Lissajous optical fiber scanner, which comprises a cylindrical piezoelectric actuating part, a sheet-shaped piezoelectric actuating part and an optical fiber, and is characterized in that at least one of the left side and the right side of a piezoelectric material cylindrical body is provided with a correspondingly matched electrode, and the front end of the piezoelectric material cylindrical body is driven to vibrate left and right along the horizontal direction; the left side wall and the right side wall of the piezoelectric material barrel-shaped body are both provided with installation grooves used for being connected with the sheet-shaped piezoelectric actuating parts. The sheet-shaped piezoelectric actuating parts and the overlapping parts enable the inherent frequency of a combined part composed of the piezoelectric material barrel-shaped body, the sheet-shaped piezoelectric actuating parts and the optical fibers in the horizontal direction to be larger than the same-order inherent frequency in the vertical direction. According to the invention, the vibration frequencies of the combined part in two directions meet the requirements of Lissajous scanning working conditions by adjusting the appearance structure and / or size parameters of the sheet-shaped piezoelectric actuating part, the requirements of the processing size and precision of the cylindrical body are reduced, the processing difficulty of the cylindrical body is low, the processing error is easy to control, and the yield is high.