205results about How to "Avoid mechanical properties" patented technology

The invention relates to a metal cutting machining path planning system, and aims to optimize the efficiency and precision of a metal machining process through advanced technical means. The system comprises a plurality of functional modules: an image acquisition module captures a multi-angle high-resolution image of a to-be-processed metal workpiece; the three-dimensional reconstruction module reconstructs a three-dimensional model by using the images; the cutting simulation module simulates the three-dimensional model in a virtual environment and records stress and heat distribution conditions in the cutting process in real time; the intelligent segmentation module divides the machining process into a plurality of stages according to the stress and heat data; the comprehensive optimization module is combined with a genetic algorithm and a simulated annealing algorithm to optimize the cutting path, depth and feeding speed of each machining stage; the feedback adjusting module monitors stress and heat changes in actual machining, and when the stress and heat changes exceed threshold values, cutting parameters are automatically adjusted or machining is paused. According to the system, through comprehensive application of image processing, analog simulation and optimization algorithms, the cutting efficiency and the product quality are remarkably improved.

The invention relates to an agricultural robot, and discloses an animal husbandry pushing robot autonomous navigation method based on a laser radar, which comprises a microsecond-level multi-sensor time synchronization architecture based on an FPGA (Field Programmable Gate Array); in a navigation layer, seamless switching between the GNSS and the laser SLAM is realized by constructing a virtual fusion observation value by utilizing extended Kalman filtering and a self-adaptive dynamic weight algorithm; in the sensing layer, an RGB-I multi-mode model fused with laser reflectivity and a biological micro-motion detection technology are adopted, and feed and biological obstacles are accurately distinguished; and in the execution layer, flexible self-adaptive material pushing is achieved in combination with material groove edge fitting and force-position hybrid control, and the navigation precision, the operation quality and the safety of the material pushing robot in the all-weather and unstructured pasture environment are effectively improved.

The invention provides an industrial-grade heavy-load humanoid robot arm, a double-arm system and a humanoid robot, and belongs to the technical field of robots. The industrial-grade heavy-load humanoid robot arm comprises a first driving joint, a second driving joint, a third driving joint, a fourth driving joint, a fifth driving joint, a sixth driving joint and a seventh driving joint; the mounting parts comprise a first mounting part, a second mounting part, a third mounting part, a fourth mounting part, a fifth mounting part, a sixth mounting part, a six-dimensional force sensor and an end effector; according to the double-arm system and the humanoid robot composed of the double-arm system, the joints and the installation parts are separated and connected in sequence, modular design can be achieved, and maintenance and upgrading are convenient, a single arm has seven degrees of freedom, complex motion trail and posture adjustment can be achieved in a three-dimensional space, and meanwhile, the robot is convenient to use. The loading and working capacity of the arm is greatly improved, the space of a driving mechanism is reduced, and the running speed during action execution is increased.

The invention relates to a dual-motor input horizontal stabilizer balancing system which comprises a channel 1 motor assembly, a channel 2 motor assembly, a differential gear train, a final-stage gear, a reduction gear, an output gear, a ball screw and a lower connector. The dual-motor input horizontal stabilizer balancing system further comprises a main control electronic component PCE which is configured to be used for generating a corresponding balancing rate instruction according to a flight control law based on external data; and the motor control unit MCU comprises an MCU1 used for a channel 1 and an MCU2 used for a channel 2, and is configured to be used for generating a corresponding control instruction according to the balancing rate instruction and providing the control instruction to the channel 1 motor assembly (1) and the channel 2 motor assembly (2).

The invention discloses a pulse current-assisted micro-sizing method for a titanium alloy welding pipeline of an aero-engine. The method comprises the following steps: manufacturing a sizing tool; the titanium alloy welding pipeline is fixedly clamped into the shape correcting tool, and meanwhile cold shape correcting positioning of the pipeline is completed; electrodes are installed at the two ends of the titanium alloy welding pipeline shape correcting section; connecting the electrode to a direct-current pulse power supply through a wire; a direct-current pulse power supply is started, and the shape correction section of the titanium alloy welding pipeline is heated through pulse current; performing real-time temperature measurement on the shape correction section of the titanium alloy welding pipeline through a temperature measurer until the real-time temperature of the shape correction section of the titanium alloy welding pipeline reaches a set value; carrying out heat preservation on the shape correction section of the titanium alloy welding pipeline at a set temperature value for a set time; the direct-current pulse power supply is turned off, and heating of the titanium alloy welding pipeline shape correcting section is ended till the temperature of the titanium alloy welding pipeline shape correcting section is cooled to the normal temperature; and the titanium alloy welding pipeline is detached from the shape correction tool, and pulse current auxiliary micro shape correction of the titanium alloy welding pipeline is finished.

The invention provides a waste mine pit resource utilization mining method based on sludge solidification, and relates to the technical field of mine exploitation and resource recovery, and the method comprises the steps of sludge and water body composition analysis, layered water body extraction, wastewater heavy metal treatment, multi-stage filtration and centrifugal separation, solidified body putting and gradual slow release, multi-stage stirring, and layered exploitation. And waste rock and tailings are backfilled. According to the method, environment-friendly treatment and resource mining of the waste mine pit sludge are effectively achieved, environmental pollution is reduced, the recovery rate of mineral resources is increased, and good economic and social benefits are achieved.

The invention belongs to the technical field of green hydrogen production, and particularly relates to waste liquid treatment equipment. The invention relates to automatic equipment for treating waste alkali liquor activated by a nickel screen of an electrolytic bath. The automatic equipment comprises a waste acid liquor impurity filtering tank; a waste alkali liquid impurity filtering tank; the acid-base neutralization reaction tank is respectively communicated with output pipelines of the waste acid liquid impurity filtering tank and the waste alkali liquid impurity filtering tank; a stirrer is arranged in the acid-base neutralization reaction tank; the first-stage coarse filtering tank I and the first-stage coarse filtering tank II are respectively communicated with an output pipeline of the acid-base neutralization reaction tank; the second-stage fine filtering tank is respectively communicated with output pipelines of the first-stage coarse filtering tank I and the first-stage coarse filtering tank II; the filtrate storage tank is communicated with an output pipeline of the secondary fine filtering tank; and the control panel is used for conveying the output pipelines and controlling the stirrer. Automatic treatment of the activated waste alkali liquor can be achieved, batch treatment of the activated waste alkali liquor of the electrolytic cell is facilitated, the treatment cost of the activated waste alkali liquor is reduced, and therefore the economical efficiency and practicability of hydrogen are improved.

The invention discloses a crawler belt tensity control method of a crawler belt type combined harvester for soil compaction and reduction, belongs to the field of agricultural machinery control, and aims to solve the problem that the existing control on the soil compaction degree lacks self-adaptability and flexibility. The method comprises the following steps that 1, the current soil compaction degree is obtained based on monitoring data of a soil compaction monitoring sensor group; 2, according to the error, obtained in the step 1, between the current soil compaction degree and the target soil compaction degree, the crawler belt tension degree adjustment amount is obtained through a PID control algorithm; and step 3, the actuator adjusts the crawler belt in a stepping mode according to the crawler belt tensity adjustment amount obtained in the step 2 until the crawler belt tensity target value is reached.

The invention relates to the technical field of hydroelectric generator regulation and control, in particular to a hydroelectric generator dynamic regulation and control method and system based on environment change, which improve the operation efficiency and stability of the hydroelectric generator in a complex and changeable environment and enhance the safety and economy. The method comprises the following steps: according to a set acquisition frequency, continuously acquiring environment data information of a place where the hydroelectric generator is located; performing feature extraction on the environment data information acquired each time by using a preset trained key feature extraction model to obtain an environment key feature vector; performing fluctuation analysis on a plurality of continuous environment key feature vectors to obtain an environment fluctuation index; comparing the environmental fluctuation index with a preset fluctuation threshold value; and in response to the environment fluctuation index exceeding a preset fluctuation threshold value, inputting the latest acquired environment key feature vector into the hydroelectric generator environment influence analysis model to obtain a hydroelectric generator environment influence index.

The invention relates to the technical field of operation distance control methods, in particular to an overhead line engineering machinery operation safety distance management and control method based on high-precision positioning and laser point cloud data, which comprises the following steps of: establishing a comprehensive space model comprising a line trend, a line height and a three-dimensional terrain; the planned construction path is mapped to the comprehensive space model, the minimum distance between the position of the engineering machinery in the whole planned construction path and the overhead line is calculated, and the maximum operation range of the engineering machinery is obtained and compared; the content of the construction project planning book is analyzed, when the minimum distance between the engineering machinery and the overhead line is analyzed, the actual operation range of the engineering machinery at the position is judged, and comparison is carried out; the construction path of the engineering machinery is monitored in real time during construction, and deviation from the planned construction path is avoided; according to the invention, the collision risk of the engineering machinery and the overhead line in the construction process is effectively prevented, the accurate control of the construction path is ensured, and the overall construction safety is improved.

The invention relates to the technical field of boilers, in particular to a composite water-cooled wall for a biomass boiler and a manufacturing method thereof, the composite water-cooled wall comprises a water-cooled wall main body, and is characterized in that the water-cooled wall main body is formed by combining an upper water-cooled section, a middle water-cooled section and a lower water-cooled section; each of the upper water-cooling section, the middle water-cooling section and the lower water-cooling section comprises a light pipe, a sealing plate, a heat-resistant scratch nail, a nano-porous refractory castable, a reinforcing rib plate and a phase-change heat-insulating layer, and the light pipes, the heat-resistant scratch nails and the nano-porous refractory castable are combined to form a water-cooling wall component; the stability of the wall surface structure can be improved by pouring the refractory castable in the membrane wall, and wall surface cracks or other mechanical damages caused by temperature change due to instability of biomass fuel moisture are prevented; the nano-porous refractory castable has good heat conduction performance on the basis of good heat preservation performance, and heat generated in the boiler can be effectively transferred.

The present invention relates to the field of rubber damping materials, and discloses a polymer and a preparation method thereof, as well as a brominated branched butyl rubber and a preparation method and application thereof. The polymer contains a structural unit A, optionally a structural unit B, a structural unit C and a structural unit D; wherein the structural unit A has a structure shown in formula (1); the structural unit C has a structure shown in formula (2); the structural unit B is connected to the structural unit A and the structural unit C respectively; the structural unit D is a terminal capping structural unit; the structural unit B and the structural unit D are independently derived from a conjugated diene. The method of the present invention solves the problems of low damping and halogenated structural isomerization rearrangement in butyl rubber, not only avoiding the damage of the damping brominated grafting agent to the mechanical properties and air permeability of butyl rubber, but also improving the damping performance and tensile strength of butyl rubber.

A kind of vocal cord repair device based on advanced biological printing technology assisted, comprising: imaging positioning component, including endoscope imaging module and three-dimensional reconstruction processor;Surgical operating component, including glottis exposure mechanism and elephant trunk type flexible mechanical arm, glottis exposure mechanism exposes glottis to provide field of view, and mechanical arm high-precision operation;Biological repair component, including micro printing head, compatible hydrogel, injection tube and motion control mechanism, realize vocal cord reconstruction and function recovery.Integrate biological printing component and imaging positioning component, system can accurately obtain the three-dimensional structure data of vocal cord damage area, and realize the millimeter level accurate deposition of biological material, so that the millimeter level precision of imaging positioning, micron level operation of mechanical arm and controllable printing of biological material form closed loop feedback system, improve the overall success rate of vocal cord repair, realize the leap of vocal cord repair from "empirical operation" to "precision engineering", provide safer and more effective treatment options for patients with vocal cord dysfunction.

The utility model discloses a device for quickly replacing a feeding plate of a plate feeder, which comprises a first feeding plate, a second feeding plate is correspondingly arranged on one side of the first feeding plate, one end of the first feeding plate is fixedly connected with a first mounting plate, a plurality of first positioning bolts are in threaded connection with the first mounting plate, and a plurality of second positioning bolts are in threaded connection with the second mounting plate. One end of the second feeding plate is fixedly connected with a second mounting plate, the first feeding plate and the second feeding plate can correspond to each other, the integrated conveying plate of the plate feeding machine is replaced by a split type feeding plate, and positioning and locking are carried out through positioning bolts at the two ends. Therefore, replacement of one or more feeding plates can be quickly positioned, the maintenance period is shortened, environmental protection accidents and mechanical accidents caused by equipment are avoided, compared with a traditional feeding plate, the split feeding plate can solve the problem by positioning the position by only one person with an electric wrench, time and labor are saved, the production efficiency is greatly improved, and the production cost is reduced. Therefore, the method has good practicability.

The invention provides hand-held onion harvesting equipment for hilly and mountainous areas and a control method thereof. The hand-held onion harvesting equipment comprises a root cutting and conveying device, a top leaf removing device, a leaf stalk removing and conveying device, a harvesting frame, a walking chassis device and a hand-held device, the top leaf removing device is located above the tail end of the root cutting conveying device, the petiole removing conveying device is located behind the root cutting conveying device and the top leaf removing device, and the harvesting frame is located behind the petiole removing conveying device. The root cutting and conveying device is used for cutting the roots of the onions and conveying the onions to the petiole removing and conveying device through the top leaf removing device; the top leaf removing device is used for removing leaves at the tops of the cut onions; the petiole removing and conveying device is used for removing redundant petioles of the onions and continuously conveying the onions backwards to the harvesting frame. According to the onion harvester, the functions of cutting, conveying, leaf removing, field returning, harvesting and the like of onions are achieved, a plurality of procedures are integrated, follow-up treatment is reduced, the impurity rate of the onions is effectively reduced, and the onion harvesting efficiency and quality are improved.

The invention provides an engine in-cylinder brake test bench and a test method, relates to the technical field of engine test, and aims to solve the problem that an existing test bench cannot reproduce valve lift loss under a real high-pressure load. In the process that a power driving source drives a cam shaft to force a brake valve to open, the loading mechanism continuously applies a reverse mechanical acting force to the valve, so that a huge blocking load generated by high-pressure gas in a cylinder to the valve in a compression stroke of a real engine is approximately simulated physically; the valve and a transmission mechanism of the valve are passively in a real high-load stress state, so that lift reduction caused by elastic deformation or hydraulic compression of parts is simulated, a high-load operating environment in a cylinder is effectively restored, and real dynamic data including actual lift loss are measured.

The invention relates to a high-intensity focused ultrasound-assisted laser lift-off method, and belongs to the technical field of silicon carbide wafer lift-off. The method comprises the following steps: a, forming a modified layer: providing a silicon carbide crystal ingot, positioning a laser focus point F of a pulse laser ray L at a preset depth in the silicon carbide crystal ingot by adopting the pulse laser ray L with the wavelength permeable to the silicon carbide crystal ingot, and forming the modified layer in the silicon carbide crystal ingot by relatively moving the silicon carbide crystal ingot and the laser focus point F; and b, a wafer stripping step: providing a high-intensity focused ultrasound generating device. According to the invention, the fundamental innovation of the stripping mechanism is realized, the stripping efficiency is high, the action position is accurate, and the damage is more controllable; energy is highly concentrated and precisely acted, energy dispersion is avoided, and the stripping precision is improved; process integration is achieved through synchronous machining, the problems of secondary clamping, interface re-healing and the like are avoided, and efficiency and consistency are improved; the thermal damage and the mechanical damage are obviously reduced; by adjusting the focus position, the system can adapt to complex structures and deep modification.

The invention relates to the technical field of water conservancy project automation control, and discloses a water conservancy facility operation state monitoring system based on digital twinning, and the system comprises a data collection unit which is used for collecting a basic control instruction and an actual measurement state response of an execution mechanism in real time; the generalized impedance observation unit is used for calculating the state deviation between the actually measured state response and the theoretical reference trajectory and mapping the state deviation into an equivalent disturbance quantity; the track time base modulation unit is used for establishing a load-time base association rule of the equivalent disturbance quantity and the time scaling factor; the nominal model simulation unit is used for generating a theoretical reference trajectory under the constraint of a time scaling factor, the generation rate of the theoretical reference trajectory is actively reduced through a load time base association rule when it is detected that the system resistance is increased, and the safety space of an execution mechanism is replaced by time; and the contradiction between the execution capability decline of the aged water conservancy facility and the rigid control target is solved.

The utility model discloses a restraining glove for promoting blood flow of an upper limb, which can restrain the hand, can fix the position and posture of the upper limb, and can promote the blood of the upper limb to flow circularly in a massage manner. According to the technical scheme, the glove is characterized by comprising a hand glove body, an upper limb glove body and a fastener, the hand glove body is fixedly connected with one end of the upper limb glove body, the hand glove body is internally communicated with the upper limb glove body, the side wall of the upper limb glove body is provided with an open groove allowing the forearm and the hand to be placed therein, the open groove is formed in the length direction of the upper limb glove body, and the fastener is arranged on the upper limb glove body. A sealing assembly is arranged at the position of the open groove, and the buckling device is arranged on the surface of the upper limb sleeve body and detachably connected to the bedrail or the bed frame. A plurality of air bags are arranged on the inner side of the upper limb sleeve body, the upper limb sleeve further comprises a control assembly used for regularly expanding or shrinking the air bags, the reciprocating massage function on the forearm is achieved through the control assembly, and the problems of discomfort caused when the upper limb is restrained and unsmooth blood flow are solved.

The invention discloses a preparation method of a high-uniformity low-hydrogen-release high-solderability gold coating on the surface of an aluminum-based silicon carbide material. The preparation method comprises the following steps: carrying out oil removal and chemical coarsening on the surface of aluminum-based silicon carbide; carrying out silanization treatment on the surface of the aluminum-based silicon carbide; performing palladium-free activation on the surface of the aluminum-based silicon carbide; sequentially carrying out primary nickel plating, primary hydrogen removal and sand blasting treatment on the surface of the aluminum-based silicon carbide; carrying out secondary nickel plating on the surface of the aluminum-based silicon carbide; gold plating is conducted on the surface of the aluminum-based silicon carbide, and a gold plating layer is formed on the surface of the aluminum-based silicon carbide; and carrying out secondary dehydrogenation on the gold plating layer on the surface of the aluminum-based silicon carbide. According to the method, uniform active points on the surface of the aluminum-based silicon carbide are prepared, it is guaranteed that the follow-up plating layer is uniform in crystallization and high in adhesive force, plating layer hydrogen removal is conducted through secondary vacuum heat treatment, and preparation of the low-hydrogen-release high-weldability gold plating layer on the surface of the aluminum-based silicon carbide material is achieved.

The invention discloses a boron carbide composite ceramic tool bit and a preparation method thereof. The boron carbide composite ceramic tool bit comprises a tool bit body and a welding transition body, the tool bit body is internally provided with a boron carbide ceramic framework with a three-period minimal curved surface topological structure, three-dimensional communicating holes of the framework are filled with a metallic bond and diamond abrasive particles, and the welding transition body is a pure metallic bond transition layer. A hard wear-resistant phase is arranged on the outer surface of the combination body. The method comprises the following steps: constructing a boron carbide ceramic skeleton with a pore surface micro-nano diversion trench through additive manufacturing, and depositing an electromagnetic sensitive phase; injecting the powder into the three-dimensional communicated pores and assembling a green body; applying mechanical oscillation pressure and a high-frequency alternating electromagnetic field at the sintering temperature, and inducing an in-situ metallurgical reaction by utilizing local joule heat generated by a skin effect to finish densification sintering; and a surface hard wear-resistant phase is generated through chemical heat treatment or component in-situ reaction. Compact interlocking of the internal structure is achieved, the service life of the tool bit is prolonged, and the welding strength of the tool bit is improved.

The application discloses a three-level coordinated production line body intelligent control method and system, and belongs to the technical field of intelligent manufacturing. The method comprises the following steps: establishing a global task planning layer, performing semantic analysis and logical disintegration at a first preset frequency, and generating an atomic action sequence; establishing a local space perception layer, receiving the atomic action sequence at a second preset frequency, constructing a dynamic local map by using sensor data, determining a workpiece pose by point cloud registration, and mapping the atomic action sequence into a continuous motion trajectory flow; establishing a real-time action execution layer, receiving an instantaneous target pose at a third preset frequency, calculating a theoretical driving torque by combining a Lagrange dynamics equation, switching to an impedance control mode at a contact moment, and driving an execution mechanism to complete work; and establishing an asynchronous coordination layer, realizing three-layer asynchronous communication through an industrial network, and controlling the three-layer frequencies to be distributed in a ladder type in an increasing manner. The application has the effects of improving the flexibility, precision and safety of a production line.

The invention relates to the technical field of sensors, in particular to a fuel oil liquid level sensor which comprises a fixing base, an electronic tube is arranged on the fixing base, a floater is connected to the electronic tube in a sleeving mode and can slide in the axis direction of the electronic tube, and a plurality of clamping rollers and a plurality of annular dampers are inserted into the floater. The clamping rollers can rotate around the axes of the clamping rollers. The multiple clamping rollers are arranged in the circumferential direction so as to be jointly clamped on an electronic tube. The annular damper is connected between the floater and the clamping roller and is configured to prevent the clamping roller from rotating around the axis of the clamping roller. The clamping roller is configured to be in a first state according to the vibration amplitude of fuel oil, and in the first state, the axis of the clamping roller is perpendicular to the axis of the electronic tube, so that when a vehicle runs on a road section with poor road conditions, the fuel oil in the oil tank vibrates to synchronously drive the floater to move upwards, and the clamping roller rotates at the same time; and at the moment, the clamping roller rotates lagging under the obstruction of the annular damper, so that the floater moves lagging, and the output of the sensor is more stable and accurate.

This utility model relates to the field of road surface maintenance technology in municipal engineering, and more particularly to a leveling device for road surface maintenance in municipal engineering. It solves the problem in existing technologies where the height adjustment mechanism lacks a locking device, leading to loosening of the adjustment components and loss of height control due to vibration during operation. The leveling device for road surface maintenance in municipal engineering includes two mounting frames and a mounting plate positioned between the two frames. Both sides of the bottom of each mounting frame are equipped with casters, and each mounting frame contains a lifting rod. The two ends of the lifting rod are connected to the interior of the mounting frame via a vertical guide structure, and the top of the lifting rod is connected to the top of the mounting frame via a vertical adjustment structure. This utility model, through the cooperation of the lifting rod and the detachable locking structure, achieves rigid fixation after adjustment, effectively preventing height changes caused by operational vibration and improving the stability and accuracy of the leveling operation.

This utility model discloses a mud scraper structure for a tracked excavator, belonging to the technical field of tracked excavators. It includes a mud scraper, a first positioning plate, and a second positioning plate. The side of the mud scraper has a locking groove, which engages with the track plate. The upper end of the mud scraper is provided with the first and second positioning plates, which are connected to the mud scraper and engage with the track ribs on the track plate. This structure efficiently removes mud, sand, and other deposits from the chassis, preventing chassis corrosion or mechanical component failure due to long-term accumulation, reducing unnecessary friction and load, and protecting the structural integrity of the chassis and related components. Furthermore, the engagement with the track plate via the locking groove and with the track ribs via the first and second positioning plates ensures secure installation, easy disassembly, and convenient replacement after damage.

The application belongs to the technical field of power system automatic control, and relates to a power equipment safety regulation system based on data analysis, which comprises a data acquisition unit, a state space analysis unit and a nonlinear adaptive regulation unit; a running state space is constructed by using a real-time output state sequence, a state offset modulus of a state point relative to a safety boundary is solved; then a control gain is dynamically mapped according to the modulus, and an integral link is constrained by using a body temperature change rate data, so as to output a safety regulation instruction; a system built-in parameter baseline back-off logic is provided; through dynamic mapping of a running state to a control parameter space, the application realizes mode conversion of power equipment from passive over-limit removal to active energy envelope regulation, effectively solves the mutual exclusion contradiction between regulation response bandwidth and steady-state accuracy, and improves the nonlinear disturbance receiving capacity of a hub node under a 50Hz fundamental frequency.

The invention discloses a rat tail suspension device. The rat tail suspension device comprises a rollable section and an anti-climbing section, the rollable section comprises a fixed part and a movable part which are detachably arranged; a through hole is formed in the anti-climbing section; when an experimental mouse is fixed on the mouse tail suspension device, the fixed part and the movable part are arranged in an attached mode, the tail of the experimental mouse extends into a gap formed after the fixed part and the movable part are attached through the through hole, and the fixed part and the movable part are of a curled structure. The free end of the anti-climbing section is located below the lowest point of the rollable section, and the vertical distance between the free end of the anti-climbing section and the lowest point of the rollable section is 1-3 cm. The suspension device is simple in structure, reasonable in design, convenient to operate, firm in fixation in the use process, small in damage to mice, and higher in reliability and accuracy of experimental results.

The invention provides a grating compression device, a compression method thereof and an optical fiber laser system. The grating compression device, the compression method thereof and the optical fiber laser system have the following beneficial effects that after being diffracted by the grating in the cavity, laser is reflected between mirrors such as the grating in the device to be compressed, and a light beam compressed by the grating can be translated by a certain distance in the vertical direction and is transmitted in the reverse direction through the basic turn-back mirror; the volume of the grating compressor is effectively reduced, and the cost is saved; and the angle between the incident laser and the grating pair and the distance between the grating pairs are adjusted through electric control, so that the device is adaptive to different laser systems, high-precision control of dispersion compensation amount is realized, and introduction of mechanical clearance or angle deviation caused by manual adjustment is avoided.

The utility model relates to the technical field of ellipsometer application, in particular to an ellipsometer platform capable of synchronously adjusting light paths. An ellipsometric platform capable of synchronously adjusting light paths comprises a base and a parallelogram connecting rod mechanism vertically arranged on the base, and the parallelogram connecting rod mechanism comprises a first connecting rod, a second connecting rod, a first laser fixing plate, a second laser fixing plate, a fixing pin and an adjusting block capable of moving in the vertical direction; one end of the first connecting rod is hinged with the adjusting block, and the other end is hinged with the upper end of the first laser fixing plate; one end of the second connecting rod is hinged with the adjusting block, and the other end is hinged with the upper end of the second laser fixing plate; the lower end of the first laser fixing plate and the lower end of the second laser fixing plate are both hinged to a fixing pin. Based on the parallelogram principle, geometric forced synchronization of an incident angle and a reflection angle is achieved, angle adjustment is simple, and cost is moderate.

The application relates to the technical field of general control or regulation systems, and discloses a multi-device cooperative control method of a PCB pattern transfer production line, which comprises the following steps: calling a multi-dimensional process sensitivity coefficient matrix, stripping exposure error components and etching error components from nonlinear cumulative line errors output by a self-detection instrument; using a one-dimensional logic sliding window buffer to cache the etching error components of continuous substrates to calculate average dynamic deviation; comparing the average dynamic deviation with a control dead zone safety threshold value, and when the average dynamic deviation does not exceed the threshold value, a control loop enters a protective resting state for a spray pressure proportional regulating valve, and when the average dynamic deviation exceeds the threshold value, a discrete pressure compensation amount is calculated and output to the spray pressure proportional regulating valve. According to the application, feedback lag caused by long-distance transmission is eliminated through error cascade decomposition, mixed geometric deviation is restored to single process drift, random mechanical noise is isolated by means of dead zone control, surge of a regulating mechanism is avoided, and stable convergence of multi-device cascade process parameters is realized.