8 results about "Electromagnetic interference control" patented technology

The application discloses an electric arc additive and multi-directional loading device cooperative operation welding gun system and a rigidity and damping cooperative control method thereof, the system comprises an anti-vibration welding gun neck assembly, an anti-interference wire feeding hose assembly, a controller and an avoidance trigger sensor; the anti-vibration welding gun neck assembly adopts a multilayer damping composite bellows structure, adjusts the rigidity of the gun neck through circumferentially distributed independent sealed air pressure chambers, and cooperates with a viscoelastic damping layer to realize wideband vibration damping; the anti-interference wire feeding hose assembly adopts an axial partition type electromagnetic shielding structure, cooperates with an active electromagnetic cancellation structure to realize full-band anti-electromagnetic interference; the control method has multiple working modes such as rigid posture keeping, flexible avoidance synchronous arc extinguishing, posture resetting, vibration active suppression, electromagnetic active cancellation and the like. The application effectively solves the vibration interference, electromagnetic interference and collision safety problems during the electric arc additive and multi-directional loading device cooperative operation, and significantly improves the stability and forming quality of the electric arc additive manufacturing process.

The invention discloses a vehicle electromagnetic compatibility test system and method. The vehicle electromagnetic compatibility test system comprises an information acquisition subsystem, an electromagnetic interference subsystem, a test upper computer and a site communication device. The information acquisition subsystem comprises a camera, a laser radar and a sound catcher which are arranged above a test site rod piece; the electromagnetic interference subsystem comprises a first guide rail, an electromagnetic interference signal generation device and an electromagnetic interference controller which are arranged around a test site; the test upper computer communicates with the tested vehicle and is used for controlling the tested vehicle to run according to a test scene process so as to simulate a test scene; and the site communication device is used for realizing communication among the information acquisition subsystem, the test upper computer and the cloud platform. The system can achieve the automatic testing of the transverse function of the tested vehicle under an electromagnetic interference signal, detects the transverse function of the vehicle under a real electromagnetic interference scene, improves the electromagnetic compatibility testing efficiency, and improves the reliability of a testing result.

The application discloses a high-extraction-energy ion source high-pressure water-gas connection structure and an operation method. The structure comprises a hydrogen gas adjusting pipeline and a water cooling isolation pipeline, and the hydrogen gas pipeline is replaced with a mechanical needle valve arranged in a high-voltage area of-35 kV to replace an electronic hydrogen gas flowmeter on the ground side; the water cooling pipeline is provided with an isolation water distribution row, a high-pressure water distribution row, a high-pressure water bearing pipe and a ground water pipe, all water cooling branches are connected with the high-pressure water distribution row, and only the high-pressure water bearing pipe bears a complete pressure difference from 0 V to-35 kV. The method comprises the following steps: using the above water-gas connection structure, eliminating the hidden trouble of gas path ignition by using the high-pressure mechanical needle valve, and relying on the double water distribution rows to segment the water path and uniformly distribute the high-voltage electric field. The application can prevent the faults of electronic element induction high voltage, electromagnetic interference control system and the like; only the high-pressure water pipe needs to be replaced to adapt to higher negative high pressure, the ion source main body does not need to be changed, the operation safety and long-term stability of the ion source under high extraction voltage are significantly improved, and the application is suitable for the negative hydrogen ion source beam extraction scene of a cyclotron.

The application discloses a tracked explosive-handling robot and a control method, and relates to the technical field of explosive-handling robots, and comprises a closed space control mode, an open ruin control mode and an electromagnetic interference control mode. The closed space control mode is as follows: an operator wears a fingertip controller, the fingertip controller collects fingertip pinch force, generates an instruction for controlling the clamping force of a mechanical arm of the tracked explosive-handling robot, collects the wrist turning angle sensed by the fingertip controller to generate an instruction for controlling the rotation of the mechanical arm, and the fingertip controller communicates with the control unit of the tracked explosive-handling robot to interactively control the instruction. The control unit automatically switches the control mode based on sensor parameters, and manual intervention of the operator is not needed; hardware and control logic are deeply coordinated, the overall operation efficiency is greatly improved, common explosive-handling scenes such as pipelines, ruins and electromagnetic interference can be adapted, the on-site risk of explosive-handling personnel is significantly reduced, and reliable technical support is provided for explosive-handling operations in complex environments.

The invention discloses a crawler-type explosive ordnance disposal robot and a control method, and relates to the technical field of explosive ordnance disposal robots, and the crawler-type explosive ordnance disposal robot comprises a closed space control mode, an open ruin control mode and an electromagnetic interference control mode. According to the closed space control mode, an operator wears a fingertip controller, the fingertip controller collects the fingertip kneading force, generates an instruction for controlling the clamping force of a mechanical arm of the crawler-type explosive-handling robot, collects the wrist overturning angle sensed by the fingertip controller and generates an instruction for controlling the mechanical arm to rotate, and the mechanical arm rotates. And the fingertip controller communicates with a control unit of the crawler-type explosive-handling robot to interact a control instruction. The control unit automatically switches control modes based on sensor parameters, and manual intervention of an operator is not needed; hardware and control logic are deeply coordinated, the overall operation efficiency is greatly improved, the method can adapt to common explosive-handling scenes such as pipelines, ruins and electromagnetic interference, the field risk of explosive-handling personnel is remarkably reduced, and reliable technical guarantee is provided for explosive-handling operation in a complex environment.

The invention discloses a nuclear power distribution cabinet control method and system combined with electromagnetic interference suppression, and relates to the related technical field of power distribution cabinet control, and the method comprises the steps: obtaining a nuclear power station operation mode, carrying out the electromagnetic field waveform prediction of a distribution position of a power distribution cabinet, and obtaining the electromagnetic field prediction waveform time sequence information; obtaining a power distribution cabinet signal transmission constraint time zone; taking an intersection time zone of the electromagnetic field prediction waveform time sequence information and the electromagnetic field prediction waveform time sequence information; when the minimum value of the magnetic field intensity of the intersection time zone is greater than or equal to a magnetic field intensity threshold value, obtaining a reverse magnetic field generation control parameter; and controlling the magnetic field generation equipment according to the reverse magnetic field generation control parameter, and transmitting a control signal to the power distribution cabinet. The technical problems that electromagnetic interference control is not accurate and signal receiving is not stable due to the fact that electromagnetic interference is reduced by adding shielding, filters and grounding measures in the prior art are solved, and the technical effects of effectively restraining electromagnetic interference and ensuring signal receiving stability are achieved.

The invention discloses a carbon dioxide laser output control method for preventing electrical fast pulse train interference, and relates to the technical field of anti-electromagnetic interference control of laser equipment, and the method comprises the following steps: S1, collecting complete waveform data of a redundant coding control signal, constructing a multi-cycle dynamic signal trajectory model, and constructing a multi-cycle dynamic signal trajectory model; extracting disturbance boundary characteristics under electrical fast pulse train interference, and generating a disturbance analysis reference; and S2, setting a multi-level interference judgment threshold value with time resolution capability based on a disturbance analysis reference, identifying repeated self-recovery response caused by interference in combination with the continuity of a signal track, and generating an interference identification mark. According to the invention, by dynamically extracting control signal disturbance characteristics, setting a multi-level judgment threshold and introducing a rhythm control mechanism, logic oscillation caused by interference is effectively identified and inhibited, stable output and efficient recovery of the laser in an interference environment are realized, and the reliability and the immunity of the system are improved.

Disclosed are exemplary composites useful for the management of heat and / or electromagnetic interference (EMI), such as one-part dispensable thermal management and / or electromagnetic interference (EMI) mitigation materials, etc. In exemplary embodiments, a composite comprises a matrix, one or more fillers within the matrix, and a temperature-activatable thixotropic agent within the matrix. The temperature-activatable thixotropic agent is activatable upon heating of the composite to a predetermined minimum temperature for at least a predetermined minimum amount of time whereby activation of the temperature-activatable thixotropic agent increases flow rate and flow rate stability over time of the composite. Also disclosed are exemplary methods of enhancing flow rate characteristics of composites that are useful for management of heat and / or electromagnetic interference (EMI). In exemplary methods, a temperature-activatable thixotropic agent is used to increase flow rate and increase flow rate stability over time of the composite.