12results about How to "High response frequency" patented technology

The invention relates to a dynamic weighing method based on a piezoelectric acceleration sensor, and belongs to the technical field of dynamic weighing systems, and the method comprises the following steps: S1, installing at least one piezoelectric acceleration sensor on a structural body bearing an object to be weighed, and collecting a vibration acceleration signal of the structural body under a dynamic load in real time; s2, applying an active excitation signal with a preset frequency and a preset amplitude to the structural body through an actuator; s3, acquiring an output signal of the piezoelectric acceleration sensor under the active excitation, and extracting a vibration response component in the output signal; s4, calculating the dynamic mass of the to-be-weighed object based on the vibration response component; and S5, outputting a calculation result of the dynamic quality. According to the dynamic weighing method based on the piezoelectric acceleration sensor, vibration interference is effectively separated and compensated through an active excitation and response analysis mechanism, and the weighing precision in non-static states such as vibration and movement is remarkably improved.

This invention belongs to the field of variable wing technology and discloses a lightweight integrated aerodynamic drive system and a deformable wing. The aerodynamic drive system includes: a double-acting cylinder integrated with the valve bodies of a normally open and normally closed electromagnetic directional valve via a cylinder head; a combined valve comprising an inflation valve and a pressure reducing valve; the inflation valve is located above the pressure reducing valve, with its valve body integrated with the pressure reducing valve's valve body, and its outlet flow channel directly connected to the pressure reducing valve's inlet flow channel; the pressure reducing valve is located on the top of the front cylinder head of the double-acting cylinder, and is connected to the normally open electromagnetic directional valve via a gas-sealed connection, directly docking with a gas cylinder. This system combines optimized gas path design and hardware integration, integrating energy and drive functions, resulting in a compact and lightweight structure. It can adapt well to the requirements of limited installation space, significantly improving the system's adaptability to various operating conditions, thereby enhancing the aircraft's flight performance.

This invention provides a triaxial force sensor, comprising an elastic body and a strain gauge assembly. The elastic body includes connecting cylinders at both ends and a strain force detection area in the middle. The strain force detection area in the middle of the elastic body is configured as a weak connection structure, which includes at least four strain beams. The area enclosed by the strain beams is arranged in a square shape on the projection plane. The strain gauge assembly is attached to each strain beam. This invention can accurately measure forces in three mutually perpendicular directions and has the advantages of simple structure and fast response speed.

The application provides a display substrate and a display device, wherein the display substrate comprises a substrate, a photosensitive circuit and a display circuit arranged on the substrate, wherein the photosensitive circuit comprises a photodiode and a first driving transistor coupled with the photodiode; the display circuit comprises a display device, a second driving transistor and a switch transistor coupled with the display device respectively; the distance between the corresponding gate layer and the active layer of the first driving transistor and the second driving transistor is greater than the distance between the corresponding gate layer and the active layer of the switch transistor. The display quality is improved.

The utility model discloses a high-frequency response actuator driving connecting rod mechanism which comprises two bases, the two bases are symmetrically arranged, the two ends of each base are fixedly connected with supports, and the opposite ends of the two supports are provided with actuator driving connecting rod devices. The main connecting rod is of a hollow structure, the inertia of moving parts is reduced, the response frequency of the mechanism is improved, the hinged position is connected with the driven rod through the flexible hinge, friction loss is reduced, the structure is compact, the transmission efficiency is improved, and the mechanism can be conveniently integrated into automatic equipment; the connecting rod has rigid guiding and unbalance loading resisting capacity, the shaft pins at the two ends are separated by disassembling screws on the two sides through the arranged shaft pins, the clamping rings, the clamping grooves and the flange plates, disassembly and assembly of the actuator and the main connecting rod are achieved, the abraded connecting rod is convenient to maintain and replace, and the maintenance time of the actuator is shortened.

This invention relates to the field of oilfield reservoir research technology, specifically a method and system for in-situ dynamic inversion of core displacement fluids based on multi-frequency resistive and capacitive coupled tomography. The method includes: synchronously exciting capacitive and resistive modes at the current time step using multi-frequency signals during displacement simulation to obtain corresponding dual-mode electrical signals; fusing the dual-mode electrical signals according to mode optimization conditions; obtaining corresponding three-dimensional saturation distribution inversion data for oil / water / gas based on a saturation inversion model; and fitting the error between the calculated and inverted data based on the three-dimensional saturation distribution of oil / water / gas to output the fitted relative permeability result. This invention constructs an in-situ dynamic inversion method for core displacement fluids integrating multi-mode detection, mode optimization, saturation inversion, and relative permeability fitting. It is low-cost, compact, and has a high response frequency. Furthermore, the implementation of capacitive and resistive mode detection and the inversion based on the saturation inversion model are not limited by the application environment.

The utility model discloses a device for comprehensive measurement of an elevator landing door, which belongs to the technical field of safety measurement of elevator equipment and comprises a main body device and a movable sliding block, a touch screen is arranged right above the main body device, a T-shaped force sensor and a detachable cylinder are arranged at the front part of the main body device, the detachable cylinder is provided with protruding external threads, and the movable sliding block is connected with the touch screen. The movable sliding block is fixed with the force sensor through threads, the upper half portion of the force sensor is connected with the electric push rod and the linkage rod, two shifting pieces which are bent downwards and perpendicular are arranged in front of the movable sliding block, the shifting pieces and the force sensor form an opposite extending structure, and the movable sliding block is fixed and connected with the main body device through a sliding rail. The parallel movement of the movable sliding block relative to the main body equipment is realized; the elevator landing door data measuring device has the advantages of being integrated in aluminum alloy instrument design, firm, durable, small in size and convenient to carry, and measuring various elevator landing door data through one device through the detachable cylinder and the customized force sensor.

The invention discloses a movable leading edge driving mechanism for delaying dynamic stall of a blade and controlling vibration, which comprises a movable leading edge assembly, a fixed frame, a driver and a push-pull rod assembly, and realizes continuous and controllable deflection of the movable leading edge under the condition of small deformation by adopting a flexible hinge structure to be matched with a piezoelectric stack driver. The actuating mechanism is obviously simplified, the characteristics of high response frequency and good control precision are also realized, and the requirements of high-frequency and small-amplitude active adjustment of the rotor wing in a complex pneumatic environment can be met; according to the difference of stress and deformation characteristics of the upper surface and the lower surface of the front edge, the combined sealing scheme of the flexible sealing piece and the flexible rubber sealing strip is adopted, so that the upper surface and the lower surface of the movable front edge can still be reliably attached in the deflection and vibration process, airflow leakage is effectively prevented, and the stability of the pneumatic regulation and control effect of the movable front edge is ensured.

A fast-response, heat-driven, spirally wound artificial muscle is disclosed. The artificial muscle is composed of spirally wound artificial muscle fibers, which have a three-layer structure: a supporting sensing layer, a heat insulation layer, and a driving layer, from the inside out. The driving layer is connected to an external circuit, which heats the driving layer to achieve contraction movement of the artificial muscle. The heat insulation layer prevents heat transfer to the supporting sensing layer, enabling rapid temperature changes in the driving layer. The supporting sensing layer supports the artificial muscle fibers and also functions as a sensing layer. The muscle fibers of this invention are composed of inner, middle, and outer layers, which respectively serve the functions of supporting sensing, heat insulation, and driving. This minimizes the heat transfer from the driving layer to the interior of the material, reducing energy waste and ensuring rapid heat dissipation from the outer layer, thereby improving the response frequency of the artificial muscle.

The invention discloses a control assembly and a pneumatic system, and relates to the field of pneumatic systems.The control assembly comprises a control body provided with a communication flow channel, and the communication flow channel is provided with a first port suitable for being communicated with an air source and a second port suitable for being communicated with an air using device; the control main body is provided with a valve element assembly, the valve element assembly comprises a first valve element with a connecting end and a blocking end, the first valve element can move to control on-off of the communicating flow channel, the blocking end is used for blocking the communicating flow channel, and the communicating flow channel communicates with the first port and the second port in the communicating state; the two ends of the metal wire are connected with the electric connecting terminals, and the middle of the metal wire is wound around the connecting end; dissipation holes are formed in the flow channel wall of the communicating flow channel, and the dissipation holes are configured to enable gas in the communicating flow channel to flow to the winding connection position of the metal wire and the connecting end so as to take away heat around the winding connection position. According to the control assembly provided by the embodiment of the invention, heat around the winding joint can be taken away, and the control precision of the metal wire is improved.

The application discloses a differential magnetic control shape memory alloy inchworm linear driver and a driving method. Two magnetic control shape memory alloy driving elements with the same shape size and magnetic control characteristics are adopted, the displacement of the magnetic control shape memory alloy driver is borne through a piezoelectric ceramic block, and inchworm crawling is realized through differential driving with another piezoelectric ceramic block. Through the application of the application, the output energy density and response frequency of the precision driver are effectively improved, the precision driver is resistant to shock and impact, and the reliability is high.

The invention relates to an irradiation treatment system for local modification of a semiconductor, and belongs to the technical field of semiconductor processing. The irradiation treatment system for local modification of the semiconductor comprises a bearing table, a shielding mechanism, a positioning detection assembly and a control module, wherein the bearing table is used for bearing and fixing a semiconductor wafer; the shielding mechanism comprises a shielding plate and a driving assembly, and a radiation opening is formed in the shielding plate; the surface, facing the radioactive source, of the wafer is a processing surface; the edge position of the shielding plate is fixed, and the driving assembly is connected with the center point of the shielding plate and drives the center point to ascend and descend in the axial direction, so that the shielding plate generates elastic deformation to form an arc-shaped surface; the positioning detection assembly is used for detecting contact between the shielding plate and the machining face. The control module controls the center point of the shielding plate to ascend and descend according to the contact signal, so that the arc-shaped face shape of the shielding plate is matched with the arc-shaped shape of the machining face. According to the irradiation treatment system for semiconductor local modification, the reliability and the yield of a semiconductor local modification process can be improved.