16results about How to "With anti-interference ability" patented technology

The invention discloses a two-degree-of-freedom permanent magnet synchronous motor driving method and a driving device thereof. A current instruction value of a d-q axis passes through a first coordinate conversion module to obtain an instruction value of a three-phase stator current; then comparing with a three-phase current actual value fed back by sampling, and obtaining a feedback item of a three-phase instruction voltage through a PI regulator module; deriving a recursive relational expression of d-q axis current along with the change of the control period, processing three-phase voltage fed back by the motor through a third coordinate transformation module to obtain d-q axis voltage, substituting the feedback three-phase current through a second coordinate transformation module to obtain d-q axis current and a d-q axis current instruction value into the recursive relational expression, and finally obtaining a three-phase instruction voltage feed-forward item; and adding the feed-forward item and the feedback item to obtain a three-phase voltage instruction value, inputting the three-phase voltage instruction value into a switch function module, determining a power device in the controlled three-level inverter bridge module according to the positive and negative of each instruction value, comparing the power device with a carrier wave to obtain a required PWM wave, and finally obtaining an alternating current and outputting the alternating current to the three-phase permanent magnet synchronous motor.

The present application relates to the technical field of high molecular antifogging coating, and particularly relates to a supermolecular coated shed film antifogging coating solution, a preparation method and application thereof, wherein acrylic acid, acrylamidoalkyl sulfonic acid, hydroxyalkyl acrylate and double-ene crosslinking monomer are used for tetra-copolymerization to construct a supermolecular matrix with carboxyl, sulfonic acid group, hydroxyl side group and crosslinking network, and a spandex antifogging agent is introduced in situ in the matrix, hydrogen bond and hydrophobic association synergistic effect between the side group functional groups and the spandex molecules are used to realize supermolecular coating, and then pH adjustment and functional additive compounding are performed to obtain the coating solution. The present application solves the problems of easy migration and precipitation of the traditional antifogging agent, coating brittleness, short effective period, and the obtained coating has comprehensive performances of long-acting antifogging, high light transmission, strong adhesion, flexible and bending-resistant, water-resistant and aging-resistant, and room temperature rapid curing, and is suitable for antifogging treatment of various agricultural shed films and greenhouse transparent materials.

The present invention belongs to the technical field of surface enhanced Raman scattering, and in particular, is a noble metal SERS substrate for detecting specific nerve agents and a preparation method thereof. The substrate of the present invention is composed of a nanostructured noble metal sensitive layer with a Raman enhancement effect and a capture agent molecule, wherein the capture agent molecule includes an anchoring functional group that forms a stable bond with the nanostructured noble metal sensitive layer, an active functional group with a Raman scattering cross section, and a capture functional group that forms a chemical bond with the nerve agent. The present invention highly selectively captures trace amounts of organic phosphine nerve agent molecules in a complex environment by modifying the capture agent molecules with multiple functional groups on the surface of the noble metal substrate, thereby achieving trace detection.

The utility model relates to RFID electronic tag technical field, and disclose a kind of anti-interference type RFID electronic tag structure device, including installation component, the inside of installation component is provided with movable assembly, the side of movable assembly is provided with fixed component, the side of fixed component is provided with main component, the side of main component is provided with auxiliary assembly, by making fixed plate side surface chip end position in the inner groove of shielding plate interior carries out outward transmission or retraction block, chip end position carries out signal stable transmission when electronic tag uses, when not using, carry out blocking processing, prevent electromagnetic signal leakage interference when multiple sets of electronic tags are used simultaneously, with certain anti-interference ability, can further improve the stability and reliability of label, suitable for various complex electromagnetic environment and susceptible to interference application scene, effectively improve the reading accuracy and reliability of RFID electronic tag, reduce the occurrence of misreading and missing reading.

The present invention belongs to the field of fluorescence detection technology, and provides a benzothiazole fluorescent probe for detecting cupric chlorate and a preparation method thereof. The method of the present invention comprises the following steps: 6-iodo-2-methylbenzothiazole, triphenylphosphine palladium, cuprous iodide, triphenylphosphine, 4-ethynyl-N, N-dimethylaniline and triethylamine are reacted, and the obtained N, N'-dimethyl-4-((2-methylbenzo [d] thiazole-6-yl) ethynyl) aniline is reacted with sodium amide and N, N'-dimethylformamide, and the reaction product and p-dimethylaminobenzaldehyde are reacted for a second time to obtain a benzothiazole fluorescent probe. The fluorescent probe PEB-DMA of the present invention can specifically identify cupric chlorate and show an enhanced fluorescence response; the probe PEB-DMA has a certain anti-interference ability, and has a high sensitivity and a low detection limit for low-concentration cupric chlorate detection.

The present invention discloses an anti-interference UAV formation sliding mode control method, including: considering external unknown interference, establishing the UAV state equation, giving the trajectory equation of the virtual leader, and giving the formation of the UAV; determining the formation function according to the formation, and determining the formation function of each UAV; giving the position error of each UAV according to the position information of the virtual leader and the formation function; designing a non-singular terminal sliding mode function according to the position error of the UAV, and establishing the anti-interference control law of the UAV; introducing an interference observer, observing the external unknown interference, and determining the interference compensation term in the control law according to the observation result. The present invention establishes a formation control law that can adapt to any formation requirements, and improves the control performance of the system in combination with the non-singular terminal sliding mode surface, and constructs an interference observer to enhance the anti-interference ability of the system.

The utility model discloses a kind of mechanical wire binding tools for automatic packing of zongzi, including auxiliary wire binding module and base module;Auxiliary wire binding module includes winding rod, pivot and locating seat;Locating seat is equipped with locating seat main part and two locating seat extension parts, two locating seat extension parts are respectively integrally formed with locating seat main part;Pivot has pivot circumference and two pivot end surfaces oppositely distributed, winding rod is fixedly connected with pivot circumference, two locating seat extension parts are respectively rotatably connected with two pivot end surfaces.The utility model discloses the mechanical wire binding tool for automatic packing of zongzi, its beneficial effect lies in, the close contact of pivot and base platform groove and the stable limiting of limiting mechanism to locating seat, ensure that winding rod in rotating adjustment angle to adapt different zongzi wire binding demand, pivot always will not be separated from base platform.

The application relates to a method for tracking a main AUV from an AUV based on a sliding mode adaptive control, which decouples the motion of the AUV into horizontal plane motion and longitudinal plane motion, simultaneously considers the influence of non-constant interference and sea current during the motion of the AUV, designs a control law through a sliding mode adaptive control method, and estimates the sea current velocity on line, so as to guide the AUV to the tail of a target AUV to perform distance tracking. Finally, through tracking simulation of linear motion and curve motion of the target AUV respectively, the feasibility of the AUV long-distance guiding and tracking method is verified. Through adaptive control, the influence of parameter error on the stability of the system is eliminated, the sliding mode adaptive control method can estimate the sea current velocity, the system has certain anti-interference ability, and the robustness of the system is also indicated.

The utility model belongs to the technical field of shielding boxes, and particularly discloses a high-stability coupling shielding box test tool which comprises an outer box and a push plate, the push plate is movably connected to the lower portion of the interior of the outer box, rollers are movably connected to the four corners of the bottom of the push plate respectively, a cover plate is longitudinally fixed to the right side of the push plate, and the cover plate is fixed to the right side of the outer box. A sealing frame is fixed to the periphery of the outer portion of the cover plate, and inserting rods are fixed to the four corners of the left side of the sealing frame correspondingly. According to the high-stability coupling shielding box test tool, a positioning frame is fixed to the periphery of the right side of the exterior of an outer box, a push plate and a shielding box are driven by rollers to enter the outer box, a cover plate on the right side is attached to the surface of the outer box, after the cover plate is aligned with a sealing frame and the positioning frame, an insertion rod is inserted into a through groove, and then a first bolt is longitudinally screwed into a screw hole for reinforcement; interference signals are generated in cooperation with the signal generator and the controller to conduct an anti-shielding test, and the problem that the signals are prone to leakage is solved.

The invention provides a BCI optimization circuit in an LIN bus, an optimization method and a transceiver, and is applied to the technical field of LIN transceivers, and the BCI optimization circuit comprises a pull-up path and a pull-down path which are respectively connected with the LIN bus; the grid of the field-effect tube of the pull-down path is connected with the grid control module; the grid control module controls energy coupled to the grid of the field effect transistor, so that the optimization circuit has anti-interference capability. When the LIN bus is at a low level or a high level, the grid control module controls the energy coupled to the grid of the field effect transistor, so that the optimization circuit has the anti-interference capability, and the difference between a rising edge and a falling edge is not large compared with that when interference is not added; moreover, when the work of the LIN transceiver is interfered by the BCI, normal communication can still be realized, and communication error codes are not generated, so that the reliability and robustness of LIN communication are improved.

The invention relates to the technical field of signal processing, and provides an enabling circuit of a megasonic generator and the megasonic generator, in the enabling circuit, an H11L1SR2M chip comprises an ANODE interface, a CATHODE interface, a VO interface, a GND interface and a VCC interface; the ANODE interface is connected with the second end of the first resistor and the first end of the first capacitor; the CATHODE interface is connected with the grounding port, the second end of the first capacitor and the anode of the diode; the cathode of the diode is connected with the first end of the first resistor and the second end of the third resistor; the first end of the third resistor is connected with the first power supply; the VO interface is connected with the second end of the second resistor; the GND interface is connected with the second end of the second capacitor and the grounding port; the VCC interface is connected with the second power supply and the first end of the second resistor. According to the scheme, stable signal transmission is realized, and the anti-interference capability is high.

The application belongs to the technical field of electric-gas servo control, and discloses a control method for enhancing robust anti-interference of a voice coil motor direct drive system. S1, a dynamic equation, a model error and a state equation of the voice coil motor direct drive system are established; S2, the lumped interference is expanded into an additional state variable to update the state equation, a condition that an extended state anti-interference observer and an estimation error thereof satisfy is set on the basis of the updated state equation, and the estimation of the lumped interference is calculated by using the extended state anti-interference observer; S3, a tracking error and an auxiliary error signal are set, a controller for enhancing robust anti-interference is constructed, and a difference between the estimation of the lumped interference and the lumped error is compensated, so as to realize the control of the voice coil motor direct drive system. By the application, the selection limit of a robust gain parameter is reduced, and the control precision and the robustness of the system are ensured in the case that the system suffers from strong interference.

The invention relates to the technical field of drilling inclination angles, in particular to a method for recognizing and detecting the drilling inclination angle of a drill site based on a YOLOv8-obb model, and the method comprises the steps: collecting a drilling inclination angle picture of a drilling machine through a camera; marking a drilling machine, a drilling rod type and a target frame in the picture data by adopting rolaabeImg; carrying out data enhancement processing on the marked picture data set by adopting picture rotation and wavelet transform picture denoising; a YOLOv8-obb model is constructed, and the YOLOv8-obb model is trained through the picture data set subjected to data enhancement processing, so that an optimal YOLOv8-obb model is obtained; and inputting a drilling inclination angle picture of the drilling machine into the optimal YOLOv8-obb model, and outputting a drill rod inclination angle corresponding to the drilling inclination angle picture of the drilling machine. According to the method, the angle of the drill rod is recognized and detected in a mode of constructing the YOLOv8-obb model, the detection precision and the detection speed of the drilling inclination angle of a drill site can be improved, meanwhile, certain anti-interference capacity is achieved, and the real-time performance is good.

A method, system, product, and medium for defect detection of precision parts are disclosed, relating to the field of intelligent sensors. The aim is to address the difficulty in distinguishing between unstructured surface attachments and actual geometric damage in related 3D vision solutions. The method involves controlling a robotic arm to drive multi-source sensors to collaboratively acquire two-dimensional texture data and initial three-dimensional point cloud data, and automatically supplementing missing areas to generate complete three-dimensional point cloud data. Subsequently, two-dimensional feature vectors containing local texture information and three-dimensional feature vectors containing spatial geometric information are extracted and fused to generate a target fused feature vector possessing both texture and geometric attributes. Finally, the feature distance between this vector and a normal sample feature library is calculated as the deviation to determine the defect. This application utilizes semantic mutual verification of multimodal features to reduce the false alarm rate in complex scenarios, achieving high-precision and interference-resistant detection of subtle defects in precision parts.

The utility model relates to the technical field of automobile parts, and discloses an anti-interference integrated wire harness for an electric control system of an automatic driving automobile, which comprises an insulating coat and a sliding square block, the inner wall of the insulating coat is fixedly connected with a flame-retardant layer, the inner wall of the flame-retardant layer is fixedly connected with a reinforcing layer, and the sliding square block is fixedly connected with the reinforcing layer. The inner wall of the reinforcing layer is fixedly connected with a plurality of separation assemblies, the interior of each separation assembly is slidably connected with a plurality of wires, the interior of the insulating coat is provided with a tensile metal ring sheet, and the interior of the reinforcing layer is provided with an anti-interference metal ring sheet. According to the utility model, different metal ring sheets are arranged inside the multi-layer protective coat, so that the device has certain tensile and anti-interference capabilities, and the fixing rings are fixed on the inner wall, so that the wires can be uniformly distributed inside the four holes formed in the fixing rings, and the internal wires are orderly placed; and the temperature is not too high due to mutual contact.

The present invention discloses a defect-resistant photon coded XOR operator, comprising a photonic crystal dielectric column array, a parallel plate waveguide, an absorbing material, a first monopole antenna that remains in an open state, and second and third monopole antennas whose states can be freely changed; the photonic crystal dielectric column array is a two-dimensional square lattice structure, one side of the photonic crystal dielectric column array is an ideal electric conductor PEC, and the other three sides are absorbing materials; the photonic crystal dielectric column array and the absorbing material are both located between two parallel plate waveguides; the electromagnetic wave generated by the first monopole antenna under the action of an external magnetic field can form a boundary state that is unidirectionally transmitted along the PEC, and the second and third monopole antennas are on the same straight line as the first monopole antenna; by detecting the electric field value on the transmission path, the logic output is determined by the number of peaks after its fast Fourier transform. The present invention has the advantages of immunity to surface defects, simple structure, high accuracy, etc., and solves the disadvantage that the traditional coded XOR operator is sensitive to defects.