29results about How to "Achieve high precision control" patented technology

The invention relates to the field of valve control, in particular to a valve control method insensitive to temperature fluctuation, a controller and a vaporization device. The valve is arranged on a liquid inlet flow path of the vaporization part. The method comprises the steps that a current flow signal fed back by a flow sensor of the liquid inlet flow path is received; deriving the current flow signal, and gaining to obtain a current derivative compensation signal; pID control is carried out based on the flow set value and the flow measurement value corresponding to the current flow signal, and a current valve control basic signal is obtained; estimating a current temperature control disturbance signal caused by temperature fluctuation of the heating vaporization cavity based on the current flow signal and the valve control signal at the previous moment; and superposing the current valve control basic signal, the current derivative compensation signal and the current temperature control disturbance signal to obtain a current valve control signal. The multi-level control strategy combining PID control, derivative compensation and disturbance compensation is adopted to control the valve so as to cope with periodic disturbance of a heating system, and stability and control precision of liquid flow can be ensured.

The invention relates to the technical field of signal transmission, and discloses a K-band adjustable microwave delay line assembly, which comprises a first amplifier, a stepping delay group, a second amplifier, a small stepping delay chip and a stable-phase stepping attenuator which are connected in sequence, the stepping delay group comprises a plurality of delay line groups, the plurality of delay line groups are connected in series, each delay line group comprises a delay line circuit, a straight-through circuit and two single-pole double-throw switches, and the single-pole double-throw switches are used for switching the circuit to be communicated with the straight-through circuit or the delay line circuit. According to the utility model, the required delay can be achieved in the frequency band of 24.25 GHz to 24.75 GHz, and the delay can be finely adjusted through the small-step delay chip. And the performance of the microwave link is dynamically adjusted by combining a stable-phase step attenuator, so that high precision and stability of signal output are ensured. The structure is based on the microwave delay line, and is simple in structure and low in cost, thereby being good in economical efficiency on the basis of meeting requirements, and being suitable for large-scale engineering application.

The utility model provides a kind of underwater high-precision servo self-stabilizing motion device, including outer orientation rotating assembly, inner orientation rotating assembly, inner pitch rotating assembly, servo control driving assembly and base cylinder, wherein outer orientation rotating assembly is mainly used to isolate the influence of external environment to inner frame system and load, ensure the accurate control of stable loop;Inner orientation rotating assembly drives instrument to realize inner orientation rotation in limited angle range, and inner pitch rotating assembly drives instrument to realize pitch rotation in limited angle range;Device adopts two-axis three-frame structure, designs stable transmission mechanism and high-precision control system, and has good stability, high control precision, strong load and adaptability, solves the technical problems such as structure insensitivity, insufficient stability and poor adaptability, and realizes underwater high-precision coordinated motion, fast and accurate aiming and tracking target, obtains stable, clear target image and video information, and can be widely applied in optoelectronic stable platform, underwater robot, underwater exploration operation and other fields.

The invention discloses a control method for operation equipment and a related device, and relates to the technical field of operation equipment. The control method comprises the following steps: determining a driving path and a target end point based on environment information collected by operation equipment; determining a first distance between the current position of the operation equipment and the target end point; based on a comparison result between the first distance and a preset threshold value, adopting a first control strategy or a second control strategy to drive the operation equipment to move, wherein under the condition that the first distance is greater than the preset threshold value, path tracking is carried out along the driving path by adopting the first control strategy; and under the condition that the first distance is smaller than or equal to the preset threshold value, switching to the second control strategy to enable the operation equipment to move to the target end point. According to the invention, the operation precision of the unmanned forklift in a complex outdoor scene can be improved.

The application discloses a high-precision encoder control system based on artificial intelligence, which comprises an information interconnection module, a blade posture prediction module and a high-precision control module. The information interconnection module is used for interconnecting information data between a plurality of groups of wind generator groups through a high-speed communication network. The blade posture prediction module is used for analyzing and predicting the optimal posture angle of the blades of the wind generator groups in real time. The high-precision control module is used for controlling the high-precision control of the blade posture of the target wind generator group according to the analysis result of the blade posture prediction module. The information interconnection module and the blade posture prediction module are network-connected. The blade posture prediction module and the high-precision control module are network-connected. The application has the characteristics of high control precision and strong practicability.

The invention provides a control method, a computer readable medium, a control device and a processing system, and relates to the technical field of transmission control, firstly, the actual state of a motion variable is determined according to a model, the motion variable represents the transmission speed of a substrate, and the model can associate the motion variable with a position variable; the position variable represents the distance between the substrate and the rotation axis of the conveying roller; and then the driving device is controlled according to the actual state of the motion variable and the reference state of the motion variable, the driving device can drive the conveying roller to rotate around the rotating axis, and conveying of the base plate is achieved. Compared with the prior art, the driving device can be jointly controlled according to the actual state and the reference state, the actual state is jointly determined by the position variable and the motion variable, and therefore motion feedback can be achieved in real time, and high-precision control over the conveying speed can be achieved; the fluctuation of the transmission speed and the deviation between the transmission speed and the preset value are reduced, and the transmission stability is ensured.

The invention discloses an optimal control method for improving the power tracking precision of a hybrid synchronous converter, and belongs to the field of power electronic technology and power system control. The invention provides an improved control strategy based on a series high-pass filter in order to solve the problem of low active power tracking precision caused by steady-state coupling of a voltage synchronization loop in existing hybrid synchronization control. According to the invention, the high-pass filter is connected in series in the voltage synchronization loop, continuous interference of a steady-state power angle to the frequency is blocked by utilizing the direct current blocking and alternating current alternating current characteristics of the high-pass filter, and the power synchronization loop independently dominates the steady-state frequency, so that the steady-state power error is thoroughly eliminated, and zero-static-error tracking is realized. And meanwhile, the response capability of the voltage synchronization loop to transient high-frequency disturbance is reserved, so that the excellent transient damping characteristic of the hybrid synchronization control strategy still exists. In addition, the method is simple in structure, does not need to depend on complex system parameter identification, and has high robustness and engineering adaptability.

The utility model discloses a kind of rotating devices, belong to X-ray automatic detection equipment technical field, specifically related to a kind of high-precision X-ray source intelligent rotating device, comprising: driving motor, installation bottom plate, hollow rotating platform and X-ray source assembly;The driving motor is installed in the rear side of the installation bottom plate, the hollow rotating platform is installed in the front side of the installation bottom plate, and the X-ray source assembly is installed on the hollow rotating platform;Arranged on the installation bottom plate is in-place inductor and limit block;The X-ray source assembly is provided with the inductive sheet matched with the in-place inductor;The utility model uses hollow rotating platform as core rotating element, and is directly driven by motor, and this design reduces the generation of cumulative error from the root, ensures the high-precision rotating performance;And simplify overall structure, under the premise of guaranteeing function, reduce volume, weight and cost, show significant technical advantage.

The utility model discloses an automobile spray gun assembly based on ultrasonic ranging, which comprises a spray gun body, an LED lighting unit and an ultrasonic ranging unit, a nozzle is arranged at the head end of the spray gun body, the LED lighting unit is arranged at the head end of the spray gun body and is close to the nozzle, and the ultrasonic ranging unit comprises an ultrasonic ranging sensor and a main control chip, the ultrasonic distance measuring sensor detects the distance between the ultrasonic distance measuring sensor and a paint spraying workpiece in real time and transmits the distance to the main control chip, the main control chip measures and calculates the distance in real time, and when the distance reaches a preset distance, the main control chip drives the LED lighting unit to be lightened. High-precision control over the spraying distance is achieved, the spraying qualification rate of workpieces with complex curved surfaces is increased to 95% from 82% in the prior art, the problem of manual positioning errors is effectively solved, and the precision requirement for automobile coating is met.

The application discloses a kind of self-adapting global fractional order terminal sliding mode serpentine robot control methods.In order to solve the problem of high complexity in modeling process, it is difficult to solve, an error dynamics model is constructed, and the design difficulty of control system is further simplified. In response to the uncertain terms and unknown disturbances that may exist in the model, a radial basis function neural network observer is introduced, which effectively approximates the estimation of these uncertain factors. In order to ensure that the joint serpentine robot system can converge quickly, an adaptive constant rate control strategy is designed, and combined with the global fractional order terminal sliding surface, not only the high-precision control of the system is realized, but also the robustness of the system is significantly enhanced.

A permanent magnet synchronous motor comprises a stator, a rotor and a rotating shaft, wherein the stator comprises a stator winding, a stator end face magnetic pole ring group k0, k1, k2...k n The rotor includes a rotor main permanent magnet, a rotor end face magnetic pole ring group k0, k1, k2...k n And rotor iron yoke, stator end face magnetic pole ring group k0, k1, k2...k n With the rotor end face magnetic pole ring group k0, k1, k2...k n The same group consists of k0, k1, k2...k n Group; thus, smooth torque output can be achieved, torque pulsation suppression effect is good, the structure is simple and easy to process, and high-precision control can be better achieved.

The invention discloses a high-precision under-voltage protection circuit, which comprises a configuration circuit and a comparison circuit, and is characterized in that the configuration circuit is used for capturing the change condition of the difference between the input voltage and the output voltage of a chip, and controlling an under-voltage threshold value by setting a compensation current; the comparison circuit is used for detecting and amplifying the difference between the input voltage and the output voltage of the chip. The under-voltage protection circuit detects a difference value between an input voltage and an output voltage and compares the difference value with a set under-voltage threshold value to realize a control function on the circuit, and when the input voltage and the output voltage fluctuate in a normal range, the under-voltage protection circuit outputs a low level; when the difference value between the input voltage and the output voltage is larger than the under-voltage threshold value, it is considered that load overload or output short-circuit grounding faults occur, the output of the under-voltage protection circuit is high level, the control circuit is switched off, and the problem of circuit damage caused by under-voltage in the using process of the analog integrated circuit is solved.

The application discloses a kind of photovoltaic roof cable laying device and laying method thereof, it is related to cable laying technical field, the photovoltaic roof cable laying device, including pay-off equipment, tension control equipment and traction equipment, the traction equipment is installed in the inside of roof wiring bridge, the traction equipment includes circular shell, the rear end of the circular shell is installed with power supply seat, and charging interface is arranged on the outer wall of power supply seat, the rear end of the power supply seat is installed with clamping mechanism, the cable is wound on the pay-off equipment, one end of cable extends to tension control equipment, and after tension control equipment is tensioned, it is connected with the clamping mechanism of traction equipment, and the scheme solves the problem that existing cable laying device is only related to pay-off part, and manual traction is needed, which is time-consuming and laborious.

The utility model belongs to the technical field of mechanical transmission devices, and discloses an actuating mechanism based on a cam and a connecting rod, the actuating mechanism comprises a driving piece, a gear assembly, a cam piece and a connecting rod piece, the gear assembly is provided with a power input end and a power output end, and the power input end is connected with a driving shaft of the driving piece; the cam piece is connected with the power output end; one end of the connecting rod piece abuts against the cam piece, and the other end of the connecting rod piece abuts against a lock catch piece of the opening and closing mechanism. Two buffering limiting pieces are arranged on the outer side of the driving piece in the sliding direction of the connecting rod piece in a spaced mode, and the two buffering limiting pieces are used for limiting the rotating angle of the cam piece. The actuating mechanism is short in stroke, capable of well meeting the requirement for a compact space, high in reliability and low in impact noise.

The application discloses an intelligent electric valve actuator and a control method and device thereof. The intelligent electric valve actuator comprises an intelligent electric valve control device, and high-precision control of valve opening and closing is realized by adopting an intelligent electric valve control method. The control method comprises the following steps: when the valve is opened or closed, a first control mode is used to run at a high speed from a starting point to a stroke limit switching point and is switched to a second control mode; the first control mode is a valve position estimation mode based on speed value integration; the second control mode is used to run at a low speed to a valve contact point; the second control mode is a torque threshold positioning control mode; and the second control mode is continuously run until torque reaches a stable value and is maintained for a set time, which is a stopping point; the valve opening or closing operation is stopped at the stopping point; the current position is reset as an actual valve opening or closing position; and valve plate position errors accumulated in the first control mode are cleared, so that position self-calibration is completed.

The invention provides a nuclear fuel assembly grillwork laser welding chamber, system and method.The welding chamber comprises a welding chamber body, an atmosphere control system, a welding displacement system and a control system, and a driving assembly and a detection assembly of the welding displacement system are both arranged outside the welding chamber body; and the positioning assembly is connected with a displacement assembly arranged in the sealed welding space through a transmission assembly. A heating source and a precision measuring element are moved out of a welding cavity, the problems that according to a traditional built-in scheme, sealing reliability is low, heat dissipation safety risks are large, and high-precision control and equipment cost are difficult to consider at the same time are effectively solved, the sealing difficulty and cost are remarkably reduced, meanwhile, direct high-precision feedback of an external detecting element is utilized, and the sealing reliability is improved. And high safety, high precision and high reliability in the welding process are achieved.

The application relates to the field of platform type inertial navigation product maintenance, in particular to a high-precision automatic air extraction and charging equipment for an inertial platform and an air extraction and charging method thereof. The automatic air extraction and charging equipment comprises a display control panel and a manual operation screen; a nitrogen cylinder cabinet is used for storing an air pressure extraction device, and the specific steps are as follows: step 1, adjusting pressure; step 2, vacuum extraction; step 3, nitrogen charging; and step 4, improving nitrogen purity in the inertial platform. Through an absolute pressure sensor and a pressure display instrument, the automatic air extraction and charging function is realized, and a user no longer needs to manually disconnect the air extraction and charging switch by observing a pressure gauge. An electric high-vacuum pressure reducing valve is arranged between the air extraction and charging pressure and the vacuum degree pressure of the inertial platform, which can adjust the air charging pressure and ensure that the air pressure in the inertial platform is stable after the air charging valve is disconnected. By adjusting the front-stage air charging pressure value, high-precision control of the nitrogen pressure in the inertial platform is realized.

The utility model relates to inductance processing equipment technical field especially relates to a spot welding mechanism based on inductance is provided with welding mechanism and grinding mechanism, can realize the integrated operation of welding and welding head maintenance, welding mechanism includes welding head drive assembly and welding head, welding head drive assembly adopts the series connection structure of three -level linear drive unit, realizes the high accuracy control of welding head space position, guarantees the welding accuracy, grinding mechanism includes lifting drive assembly and grinding piece, lifting drive assembly drives the accurate lifting of grinding piece, and the welding process of welding head can be avoided to the grinding piece descending, and the grinding piece rises and is contacted with welding head automatically and completes surface treatment, effectively solved the problem of welding head oxidation and tin dregs accumulation, make the operation of spot welding mechanism have continuity, significantly reduced equipment maintenance cost and production downtime, especially suitable for high -frequency inductance's large -scale automation production.

The invention provides a closed-loop feedback adjustable diamond cutting tool which comprises a first adjusting unit capable of deflecting and adjusting in an X-Y plane around a Z axis, a second adjusting unit capable of sliding and adjusting is connected above the first adjusting unit, and a sliding surface of the second adjusting unit is parallel to the X-Y plane. The second adjusting unit is connected with a fourth adjusting unit through a third adjusting unit used for Z-direction leveling, the fourth adjusting unit drives the diamond to rotate along the Y axis, and the top face of the fourth adjusting unit is provided with a visual calibration plate for a camera to shoot. The shot visual calibration board judges whether the first adjusting unit and / or the third adjusting unit are / is parallel to the camera or not through the visual analysis system, and if the first adjusting unit and / or the third adjusting unit are / is not parallel, the first adjusting unit and / or the third adjusting unit are / is adjusted. According to the tool, four stages of adjusting mechanisms are integrated, the application range is greatly widened, the machining universality is greatly improved, the positioning precision after diamond clamping is effectively improved, and the section cutting accuracy is improved.

The application relates to the technical field of electric vehicle control, in particular to an electric vehicle driving motor controller, which comprises a power inverter, a sensing assembly and a control assembly; the power inverter is installed on a control mainboard; the sensing assembly is used for collecting motor operation states; the control assembly comprises a main control module, a transmission chain control module and an inverter control module; the transmission chain control module accurately measures a gear gap through a position sensor and generates a bidirectional torque pulse, so that the motor is guided to realize smooth meshing and eliminate mechanical impact; the inverter control module corrects electrical nonlinearities caused by dead zones and voltage drops through a current sensor, thereby ensuring the accuracy of basic torque output; the problems that torque is misaligned due to the electrical nonlinearities of the controller and the mechanical nonlinearities of the transmission chain during the process that the controller drives the motor, and the problems that driving smoothness and the service life of components are reduced are solved.

The application relates to the technical field of temperature control, and particularly discloses a high-precision temperature control system, which comprises a first heat exchanger and a second heat exchanger, a first interface of the first heat exchanger is communicated with a first interface of the second heat exchanger, at least one heating branch is arranged between a second interface of the second heat exchanger and a second interface of the first heat exchanger, at least two temperature sensors are arranged in an outlet pipeline of the heating branch, fixed parts are arranged in the outlet pipeline and corresponding to the temperature sensors respectively, the temperature sensors are fixed on the corresponding fixed parts respectively, and probes of the temperature sensors are located on the same radial section of the outlet pipeline. The temperature control cooling system provided by the application realizes high precision through the parallel connection of the at least two temperature sensors, the requirement for the precision of a single temperature sensor is reduced, and the cost is reduced.

This invention discloses a convex optimization method for an integrated radiation pattern of a phased array-radome, relating to the field of radiation pattern technology. The method comprises the following steps: S1, obtaining the overall short-circuit active radiation pattern of the array based on a fast electromagnetic algorithm; S2, constructing upper and lower mask functions for the sum and difference radiation patterns, and synthesizing the overall array radiation pattern based on the short-circuit active radiation pattern; S3, constructing a multi-constraint radiation pattern optimization model that minimizes the excitation amplitude range while satisfying the upper and lower mask constraints of the sum and difference radiation patterns; S4, solving the multi-constraint radiation pattern optimization model using the alternating direction multiplier method, achieving simultaneous synthesis of the sum and difference radiation patterns sharing a feed network. This invention achieves accurate synchronous synthesis of the sum and difference radiation patterns under multiple constraints, significantly improving data acquisition efficiency and radiation pattern control accuracy, while also possessing wide applicability and engineering feasibility, and reducing system design and manufacturing costs.

This invention discloses an electrostatic chuck and a three-dimensional zoned temperature control device incorporating the electrostatic chuck. The electrostatic chuck includes a three-dimensional cooling pipeline system, comprising upper and lower cooling pipelines, each with its own independent temperature control via an upper and lower circulation system. Furthermore, it offers three operating modes based on the relative temperature values ​​of the upper and lower circulation systems. The electrostatic chuck and the three-dimensional zoned temperature control device incorporating the electrostatic chuck of this invention significantly improve response speed, enable precise temperature adjustment, significantly enhance temperature uniformity, reduce energy consumption, and are suitable for various processes.

The invention relates to the technical field of automatic equipment, in particular to a method and device for pasting a label, and the method for pasting the label comprises the following steps: automatically feeding and positioning the label, taking out the label from a material stack, and preliminarily positioning; secondary positioning of the label: positioning the label, and determining that the direction and the position of the label are correct; automatic dispensing: dispensing on the surface of the part to be pasted with the label; a label is pasted, specifically, the label is pasted to the surface of the part; quality inspection: detecting whether the pasting quality and direction of the label meet requirements or not; marking and code scanning are conducted, specifically, the pasted label is marked, and code scanning is conducted to bind serial number information. According to the scheme, the defects that in the prior art, a manual or semi-automatic label pasting mode is low in efficiency and unstable in quality are overcome, full-process automation of label pasting is achieved, and the production efficiency and the product quality are improved.

The invention discloses a high-precision encoder control system based on artificial intelligence, which comprises an information interconnection module, a blade attitude prediction module and a high-precision control module, and is characterized in that the information interconnection module is used for realizing information data interconnection among a plurality of groups of wind driven generators through a high-speed communication network; the blade attitude prediction module is used for analyzing and predicting the optimal attitude angle of the blades of the wind driven generator group in real time, and the high-precision control module is used for performing high-precision control on the attitude of the blades of the target wind driven generator group according to the analysis result of the blade attitude prediction module. The information interconnection module is in network connection with the blade attitude prediction module, and the blade attitude prediction module is in network connection with the high-precision control module.

The utility model provides a kind of catheter assembly and medical equipment.Catheter assembly includes first tube body and shock wave generation component.First tube body is formed with first accommodating cavity.Shock wave generation component includes at least two discharge parts, at least two discharge parts are spaced apart and set to the distal end in first accommodating cavity along the length direction of first tube body, at least two adjacent discharge parts form discharge region, to produce shock wave in liquid medium in first accommodating cavity.Wherein, discharge region is parallel to the central axis of first tube body, and at least part discharge region and the central axis of first tube body are overlapped.Such ensure that catheter assembly can have smaller size in radial direction, effectively improve the practicability of catheter assembly.In the treatment of blood vessel calcification lesion using catheter assembly, catheter assembly can directly pass through relatively narrow lesion site, effectively simplify the treatment step, reduce the cost required for treatment, and improve the experience of patient use.

The utility model discloses a kind of cylindrical battery shell preparation pre-positioning device, including servo motor, support seat, fixed section bar, guard plate, clamping cylinder, cylindrical aluminum shell clamp, fixed block, fixed rod, screw rod, sliding table, support seat top is provided with fixed section bar, fixed section bar both sides are provided with guard plate, guard plate middle outside is provided with clamping cylinder, the cylinder rod of clamping cylinder is connected with fixed rod, fixed rod is connected between by fixed block, fixed rod end is connected with fixed section bar by opening and closing swing arm, one end of fixed section bar is provided with servo motor, servo motor is connected with screw rod transmission, screw rod is cooperated with sliding table, fixed rod is provided with cylindrical aluminum shell clamp, cylindrical aluminum shell clamp is cooperated with sliding table and is used for conveying cylindrical aluminum shell. The utility model structure design is reasonable, adopts servo drive, positioning is accurate, starts clamping, stable and reliable, greatly improve production efficiency and battery cell assembly yield.

The invention discloses a self-adaptive vibration suppression control method of a multi-degree-of-freedom robot and the robot, and relates to the technical field of robot control, and the self-adaptive vibration suppression control method comprises the following steps: acquiring initial state data of the robot, and setting an expected position; according to the initial state data and the expected position, a kinematic model of the robot is established, and resultant force borne by the mass center of the robot is obtained through calculation; and calculating an external resultant force based on the resultant force and the virtual traction force, constructing a self-adaptive vibration suppression controller, and controlling the robot to move under the external resultant force and the virtual traction force by adjusting a stiffness matrix in the self-adaptive vibration suppression controller. Based on the multi-degree-of-freedom spring machine body vibration reduction control theory, the stress condition of the machine body is improved, the vibration resistance efficiency of the machine body is improved, vibration is resisted in a flexible mode, and the movement reliability is enhanced.

The invention discloses a copper strip for copper-aluminum compounding and a short-process processing method thereof, and belongs to the technical field of copper alloy strip preparation. The copper strip for copper-aluminum compounding is prepared through the procedures of horizontal continuous casting, surface milling, heat treatment, cold rolling, primary cleaning, finished product annealing and finished product cleaning. Horizontal continuous casting and heat treatment processes are adopted for preparation, the red copper casting blank with refined grains is obtained, the hot rolling procedure is omitted, the machining process is simplified, the machining time is shortened, and the production efficiency is improved; an annealing-cleaning synergistic high surface treatment technology is adopted, so that the surface treatment quality and efficiency are improved, and outstanding advantages are shown in the aspect of enhancing the surface smoothness of the material; a trace amount of aluminum is added into the copper strip for copper-aluminum compounding for doping, so that the compounding binding force of the copper strip and the aluminum strip can be improved; and unprecedented high-precision control over the grain size is achieved through the annealing process.