11results about How to "Accuracy adjustable" patented technology

The application discloses a low-noise high-precision voltage control current source for a semiconductor laser, comprising a voltage control signal generation module, a PID control module and an output current sampling and feedback module, wherein the voltage control signal generation module receives a host computer instruction and generates a voltage control signal of an output current; the PID control module receives and processes the voltage control signal generated by the voltage control signal generation module and the feedback voltage generated by the output current sampling and feedback module, generates a control voltage to control the output current of the output current sampling and feedback module; and the output current sampling and feedback module provides a stable output current for a load and provides the amplified voltage quantity of the current feedback compared with the voltage control signal to the PID control module to provide the feedback voltage for the PID control module. The application can realize accurate and stable current output, the output current is adjustable, and the application can provide stable low-noise high-precision driving current for semiconductor lasers and the like.

The application discloses a kind of based on the optical wave parameter precision measurement method of cross polarization effect, comprising: step 1, the polarized light of polarization direction as horizontal direction is as incident light to be illuminated to dielectric, and cross polarization effect occurs when reflecting on dielectric interface;Step 2, make reflected light pass through the polarizer, and adjust the polarizer, the central light intensity of reflected light after passing through the polarizer becomes 0, and record the initial angle of the light transmission direction of polarizer and vertical direction at this time;Step 3, the physical quantity to be measured is introduced to incident light, then adjust the polarizer again, when the central light intensity of reflected light becomes 0, record the angle ψ of the change of polarizer from initial angle;Step 4, the change amount of incident light polarization direction after introducing the physical quantity to be measured is calculated according to ψ, and then the physical quantity to be measured is calculated.The optical wave parameter measurement method of the application is simple, low in cost, but the small change of the physical quantity to be measured can be accurately measured.

The utility model relates to valve technical field, and disclose a kind of pressure reducing type backflow preventer, including valve body, drain valve seat, drain valve flap, long valve rod, fixed screw, valve cover, the valve body is provided with drain valve seat, the drain valve seat inside is provided with drain valve flap, the drain valve flap upper side is provided with long valve rod, the valve body upper side is provided with valve cover.The pressure reducing type backflow preventer, by first valve seat, first valve flap, first main valve rod, first spring seat, first spring and first hexagon nut are assembled to it before being loaded into valve body, subsequent and present an integral loading into valve body inside, greatly shorten assembly time, also suitable for the assembly in the valve body of smaller volume, the unique flow passage design of two-stage check valve, small flow resistance, open and close speed is fast, can effectively prevent the damage of sudden back pressure rise to valve and pipeline, limit pressure water backflow or siphon backflow, with mute function, effectively prolong the service life of valve.

The utility model provides a kind of sintering machine tail bend, including two tail track units being oppositely arranged along transverse direction, each tail track unit includes frame, outer rail assembly and inner rail assembly, outer rail assembly includes outer side ring beam, outer side support seat assembly and outer side track, inner rail assembly includes inner side ring beam, inner side support seat assembly and inner side track, outer side track is adjustably arranged along transverse direction, along the direction of inner side track respectively, inner side track is adjustably arranged along transverse direction, interval space between outer side track and inner side track is used to limit trolley wheel running track.Such as using the structure form of integral ring beam combined with support seat can increase bend rigidity and stability, effectively inhibit the problem such as arching, deviation etc. generated due to tail bend deformation in the process of equipment operation, ensure that sintering machine runs stably and reliably;And the position of track is adjustable in part direction can ensure the control of track precision in installation process, avoid the influence of manufacturing error on equipment.

This utility model relates to the field of reflective code disks, specifically a reflective code disk, including an inner cylinder assembly; an adjustment component is fixed to the outer side of the port of the inner cylinder assembly, and an outer cylinder assembly is rotatably disposed on the outer side of the inner cylinder assembly; the working end of the elastic component is connected to the outer wall of the end opposite to the adjustment component of the inner cylinder assembly. Rotating the cylinder causes the base plate assembly to rotate, thereby misaligning the reflective coating and the light shield, increasing the frequency of light irradiation received by the photoelectric sensor. When the frequency of irradiation received by the photoelectric sensor increases, its measurement accuracy becomes more refined, thus adjusting the accuracy of the code disk. A protective film protects the glass substrate and the reflective coating, preventing scratches on the surface of the glass substrate. In addition, a side sleeve is provided on the side of the glass substrate, and the side sleeve wraps the protective film inside, preventing the glass substrate from breaking due to impact, thus improving the protective effect.

The application discloses a quota pressure-reducing type flow amplifier for a single-acting positioner and belongs to the field of industrial flow control. The amplifier is divided into an adjusting part and a pressure-reducing part. The former changes the deformation of a flexible diaphragm by changing the pressure of adjusting air, and the flexible diaphragm pushes a valve core to change the pressure of output air. The latter comprises a spring seat, a pressure-reducing spring, a connecting seat assembly, a pressure-reducing valve core, a pressure-reducing valve seat, a pressure-reducing diaphragm, a disc washer and a supporting pad. The pressure-reducing valve core and the connecting seat assembly are connected into a pressure-reducing air core which blocks a valve hole under the joint action of the pressure-reducing spring and the adjusting air. When the pressure of the adjusting air is lower than a limit value, the pressure-reducing air core closes the valve hole. When the pressure of the adjusting air exceeds the limit value, the valve hole is opened, the adjusting air is discharged to the outside, and the pressure of the adjusting air is stabilized at a set value. The application simplifies the structure of the pressure-reducing device, reduces the difficulty of assembly and debugging, can be adapted to a high-pressure adjusting air scene, and improves the control stability and response speed of the single-acting positioner.

This utility model relates to the field of sheet metal bending calibration technology, specifically disclosing a multi-station sheet metal bending calibration fixture, including: a workbench for installation, and a fixed plate stably installed at the upper middle part of the workbench; it also includes: a left and right clamping mechanism provided on the fixed plate, wherein the left and right clamping mechanism includes a bidirectional threaded screw, a motor, a first clamping plate and a second clamping plate, the motor is installed at the right end of the bidirectional threaded screw, and the first clamping plate and the second clamping plate are connected to the outer side of the bidirectional threaded screw, and the second clamping plate is located to the right of the first clamping plate; a support frame, wherein a locking mechanism is provided at the upper end of the support frame, wherein the locking mechanism includes a locking groove, a sliding frame, a first locking rod and a spring, and a locking groove is provided inside the support frame. This multi-station sheet metal bending calibration fixture facilitates anti-displacement clamping of sheet metal within the fixture, facilitates height adjustment of the fixture equipment, and facilitates adjustment of the clamping accuracy according to the sheet metal thickness.

This application discloses a real-time deformation method, system, storage medium, and electronic device, relating to the field of virtual application technology. This solution introduces speed-modulated force calculation, density-adaptive deformation, and adjustments to the mesh complexity of the virtual sculpture model based on the interaction force and speed of the user object. This allows for real-time, adaptive adjustment of the virtual sculpture model's mesh complexity, thereby presenting a highly realistic physical deformation effect—i.e., visual realism—while ensuring real-time performance. Furthermore, through the topological structure, material property definition, and real-time processing optimization of the virtual sculpture model's mesh, this solution ensures that the model does not tear or distort after deformation and maintains texture consistency. This enables dynamic and local adjustments to the accuracy of the virtual sculpture model during sculpting using VR sculpting software, based on the real-time force intended by the user object.

This invention relates to the field of electrostatic powder coating technology and discloses a powder coating device, including a spray gun nozzle, a plurality of spray gun nozzles arranged at intervals, and a baffle plate disposed between two adjacent spray gun nozzles. The baffle plates on both sides of the spray gun nozzles are symmetrically arranged, and each spray gun nozzle is installed on the same horizontal plane. The ends of two adjacent baffle plates are connected, and the ends of each baffle plate are located on the same horizontal plane, which is parallel to the horizontal plane where the spray gun nozzles are located. The powder sprayed from the spray gun nozzles passes through the ends of the baffle plates on both sides and can perform spraying on the material to be coated in a manner that meets the spraying requirements. Its advantage is that it can intercept uneven powder spray and improve the uniformity of powder coating.

This invention discloses a control method and system for a virtual synchronous generator system. The control method includes: performing power outer loop control to obtain the virtual rotor angle and virtual electromotive force of the virtual synchronous generator; performing current inner loop control by substituting the obtained virtual rotor angle and virtual electromotive force into the stator equations to calculate current reference values ​​and current reference phasors, and generating three-phase current reference values ​​by combining the virtual rotor angle; comparing the three-phase current reference values ​​with the actual three-phase currents through hysteresis to obtain a PWM wave drive signal; optimizing the particle swarm optimization algorithm based on the rated capacity to obtain PID controller parameters, which are then used for control and adjustment of the power outer loop and the current inner loop to control the virtual synchronous generator system. This control method can improve the dynamic response capability of the power grid to reactive power during load changes.

This utility model relates to the field of nozzle equipment technology, specifically to a nozzle capable of switching hydraulic pressure. It includes an inlet pipe, one end of which is equipped with a dual-channel fitting. The dual-channel fitting includes a straight guide pipe, a diversion guide pipe, and a reversing valve. One end of the reversing valve is directly connected to the fitting on the inlet pipe. The straight guide pipe and the diversion guide pipe are respectively connected to the two outlet connectors of the reversing valve. The other end of the straight guide pipe is connected to a pressure reducing pipe, and the other end of the pressure reducing pipe is equipped with a first spray element. The other end of the diversion guide pipe is connected to a booster pump, and the other end of the booster pump is equipped with a second spray element. This utility model, by setting a reversing valve in conjunction with dual-channel liquid outlet, allows selection of the liquid pressure path according to actual conditions.