15results about How to "Fast control response" patented technology

This application discloses an intelligent reflective surface and a covert communication system, belonging to the field of wireless communication technology. The intelligent reflective surface includes multiple intelligent reflective surface units arranged in an array; each intelligent reflective surface unit includes: a first substrate, a second substrate, and a third substrate; a metal patch and a varactor diode, located on the side of the third substrate opposite to the second substrate; the metal patch includes a first patch and a second patch, and the varactor diode is located between the first patch and the second patch, with its negative and positive terminals electrically connected to the first patch and the second patch, respectively; a metal ground plane, located between the first substrate and the second substrate; a first bias line and a second bias line, located on the side of the first substrate opposite to the second substrate; the first bias line is electrically connected to the metal ground plane and the first patch, respectively, and the second bias line is electrically connected to the second patch. This application can achieve precise control of electromagnetic waves, reduce electromagnetic energy loss, improve energy transmission efficiency, suppress electromagnetic wave leakage, and improve communication covertness.

The application discloses a kind of multi-energy distribution network voltage control methods, comprising the following steps, define local voltage control rule;Analysis distributed power output causes voltage fluctuation upper and lower limit;Build global voltage control function;Algorithm is solved to objective function, the local voltage control rule is acquisition control point voltage u, determine whether to satisfy the following constraint, set the reactive power output of voltage compensation device.The multi-energy distribution network voltage control method, considering the uncertainty fluctuation of distributed power supply, improve the accuracy of voltage fluctuation analysis, formulate the localized voltage adjustment rule and global voltage optimization function, realize passive control and active control combination, reduce fluctuation rate, using interval number to express the uncertainty of distributed power supply, less computing resource demand, control reaction speed is fast.

The utility model discloses an air inlet adjusting mechanism installed on a motorcycle motor, which relates to the field of motorcycle parts, and comprises a motor main body, an inner sleeve column and an adjusting cap, the inner sleeve column adopts a cylindrical structure and is detachably assembled at the front end of the motor main body, the adjusting cap is movably sleeved on the inner sleeve column, and the inner sleeve column is detachably assembled at the front end of the motor main body. A threaded adjusting rod is rotatably installed in the center of the interior of the inner sleeve column, the tail end of the threaded adjusting rod is in transmission connection with an output shaft of the motor body, an inner limiting sleeve column is installed in the center of the interior of the adjusting cap in the axial direction, a threaded hole is formed in the center of the inner limiting sleeve column in the axial direction, and the front end of the threaded adjusting rod is inserted into the threaded hole in a screwed mode. The adjusting cap is controlled by the motor to move, the gap between the adjusting cap and the throttle valve seat is changed, the air inflow of the throttle valve channel of the motorcycle is controlled, the whole control is simple, and the air inflow control response speed is high, and the efficiency is high.

The embodiment of the utility model provides a distributed liquid cooling energy storage system, and relates to the technical field of energy storage. The distributed liquid cooling energy storage system comprises a plurality of heat management units, a plurality of battery clusters, a liquid supply main pipeline and a liquid return main pipeline, each heat management unit in the plurality of heat management units is used for outputting a first cooling medium to the liquid supply main pipeline and receiving the first cooling medium output by the liquid return main pipeline, and the first cooling medium is used for exchanging heat with the plurality of battery clusters. An evaporator or a condenser in the heat management unit is used for receiving the first cooling medium and exchanging heat with the first cooling medium through the second cooling medium. The distributed liquid cooling energy storage system further comprises a driver, an electric heater, a filter and an expansion water tank. The multiple heat management units and the multiple battery clusters share at least one of the driver, the electric heater, the filter and the expansion water tank. According to the embodiment of the invention, the structure of the thermal management unit can be simplified, the failure rate of the thermal management unit is reduced, and the reliability and maintenance convenience of the thermal management unit are improved.

This invention belongs to the field of intelligent fitness equipment technology, and provides a zoned temperature-controlled therapeutic intelligent yoga mat and its control method. The yoga mat includes: a mat body, which is composed of an antibacterial sensing layer, a zoned heating layer, an intelligent spacing layer, a cushioning layer, and an adjustable friction bottom layer; the zoned heating layer contains multiple independent heating units, corresponding to the abdominal, hand and foot, and spinal areas respectively; an intelligent control module, which independently and precisely controls the temperature of each area based on the different target temperatures set by the user for each independent heating unit through an interactive terminal, combined with feedback from the zoned temperature sensors; the intelligent spacing layer integrates optical guide lines and a pressure sensor array to provide posture reference and sense the center of gravity distribution, providing real-time posture feedback to the user in conjunction with the intelligent control module. This invention solves the problems of existing heated yoga mats, such as single heating mode, lack of interactive guidance, difficulty in adapting to multiple scenarios, and in achieving precise therapeutic effects, thus improving safety, comfort, and exercise effectiveness.

The invention relates to the technical field of baked food production equipment, in particular to a full-automatic cake blank rolling machine which comprises a middle demolding supporting frame, a plurality of step-by-step demolding lifting control parts are arranged on the middle demolding supporting frame and installed on middle turnover equipment capable of turning over the step-by-step demolding lifting control parts by 180 degrees, a cake blank demolding platform is arranged on the middle demolding supporting frame, and a cake blank rolling machine is arranged on the cake blank demolding platform. The equipment comprises a plurality of cake blank fixed containing plates and liftable cake blank movable containing plates which are arranged at intervals, and is further provided with a demoulding auxiliary system which is close to a middle demoulding supporting frame and is used for impacting, vibrating and demoulding cake blanks and synchronously controlling the cake blank movable containing plates to ascend and descend; synchronous cooperative control of impact demolding and cake blank receiving can be achieved, demolding requirements of different bonding force working conditions are met, cake blank demolding damage is effectively avoided, the demolding yield and the production automation degree are greatly improved, meanwhile, demolding disintegrating slag can be collected and discharged in a centralized mode, and the standard requirement for large-scale clean production of baked food is met.

This invention belongs to the field of power electronic converter technology, specifically disclosing a direct optimization model predictive control method and system for an MMC-STATCOM system. The method includes: calculating the differential-mode voltage and common-mode voltage between the upper and lower arms of each phase; injecting third harmonic voltage into the upper and lower arms of each phase to obtain the upper and lower arm voltages of the newly added third voltage component for each phase; based on the obtained upper and lower arm voltages of the newly added third voltage component, determining the number of sub-modules to be engaged in each phase's upper and lower arms using a nearest-level approximation modulation strategy; sorting the sub-modules according to the capacitor voltage of each sub-module in the arm; and determining the engaged sub-modules for each arm according to the current direction. This invention, while maintaining the discrete control structure, achieves direct injection of third harmonic voltage under the MPC framework, exhibiting higher real-time performance and scalability.

The application discloses a vehicle brake anti-skid control method and system, a vehicle and a storage medium, wherein the method comprises the following steps: acquiring driving data and basic data of the vehicle, wherein the driving data comprises vehicle speed, acceleration, steering wheel rotation angle, yaw angular velocity and actual wheel speed, and the basic data comprises wheelbase and track; determining a slip state of the electric vehicle according to the driving data and the basic data, wherein the slip state comprises brake slip and non-slip; determining a target single-wheel output brake torque in response to the slip state being brake slip; determining a target brake torque limit value of a power motor in response to the slip state being brake slip; and controlling the electric vehicle according to the target single-wheel output brake torque and the target brake torque limit value. The application solves the technical problem that, in the prior art, due to a large delay of hydraulic response, the control effect is poor, and it is difficult to meet the requirements of users for driving quality and driving safety.

The invention discloses a wheel-legged robot reconstruction stability control method considering foot wheel rigidity influence. The method comprises the following steps: 1, establishing a wheel-legged robot coordinate system; 2, the deviation between the ideal ZMP and the actual ZMP and the deviation change rate are input into a fuzzy controller, and the ideal displacement of the movement of the mass center adjusting sliding block in the wheel-legged robot reconstruction process is calculated and output; 3, differentiating the ideal displacement of the sliding block to obtain an ideal speed, inputting the ideal displacement and the ideal speed in the reconstruction process into an LQG controller to obtain a control voltage, and inputting the control voltage into a dynamic model of a centroid adjusting mechanism to obtain the actual displacement of the centroid adjusting sliding block in the reconstruction process; and 4, calculating an actual ZMP value of the wheel-legged robot, making a difference between the actual ZMP value and the ideal ZMP value, and feeding the difference back to the fuzzy controller to form stable closed-loop control. According to the method, the actual ZMP position in the robot reconstruction process can approach to the ideal position under the influence of the foot wheel rigidity, so that the stability of the system during reconstruction is improved.

This invention belongs to the technical field of additive manufacturing technology and discloses an in-situ oxygen-controlled composite scraper and a laser selective melting device equipped with the in-situ oxygen-controlled composite scraper. The bottom of the composite scraper includes a second scraper (16), an air jet unit, and a first scraper (18) arranged sequentially along the powder spreading direction. It has an internal gas storage chamber (15) and a powder drop chamber (19). The first scraper is used to evenly spread the powder raw material to form an initial powder layer. The air jet unit performs in-situ oxidation treatment on the surface of the initial powder layer by spraying oxygen-containing gas. The second scraper is used to level and compact the powder layer after the in-situ oxidation treatment. This invention improves the composition and structure of the composite scraper and utilizes the overall cooperation of the first scraper, the air jet unit, and the second scraper to generate a synergistic mechanism of powder spreading, in-situ oxidation, and secondary compaction, breaking through the process limitation that it is difficult to construct oxide dispersion-strengthened structures in-situ during additive manufacturing.

The application provides a bronchial intervention surgery robot control system and method based on eye movement tracking. A collection module collects gaze point coordinate original data of an operator; a calibration mapping module receives the gaze point coordinate original data, and establishes a mapping relationship between the gaze point coordinate and a display terminal; an image display module displays the corresponding gaze point coordinate on an airway image according to the mapping relationship; a signal processing module receives and processes the gaze point coordinate original data, and obtains a gaze point sequence; an intention determination module updates the gaze point coordinate according to the gaze point sequence; a region determination module divides an operable region from the airway image, and generates a control instruction in the operable region by using the updated gaze point coordinate; and an execution control module controls the robot according to the control instruction generated by the region determination module. The application can reduce the operation burden of the operator, improve the control response speed, enhance the rapid positioning ability of the operable region, and improve the operation efficiency.

The invention provides a wind power plant loss reduction reactive power replacement method based on a double-variable consistency algorithm, which comprises the following steps of: respectively installing a central controller and a feeder layer controller on a low-voltage side bus and each feeder of a wind power plant main transformer, each controller updates a network loss consistency variable and a voltage consistency variable through information of the controller and an adjacent controller; the central controller obtains real-time reactive power output of the static var generator, and the feeder layer controller obtains real-time voltage of a feeder tail end node and reactive power limit data of a fan in a feeder; a feeder layer controller distributes replacement reactive power to each fan on a feeder according to a network loss consistency variable on the premise of ensuring that the voltage of a tail end node is not out of limit; and the central controller updates a reactive power deviation elimination item in the network loss consistency variable, and the feeder layer controller updates a voltage out-of-limit penalty item in the voltage consistency variable. According to the method, the reactive power of the wind power plant is distributed through centralized calculation, the control efficiency and robustness are improved, and the method has very high engineering application value.

The invention discloses a CANFD bus-based communication acquisition board card system, which comprises a control module, a power supply module, a bus communication interface, a digital quantity acquisition module, an analog quantity acquisition module and an input interface, and is characterized in that the output end of the power supply module is connected with the power supply end of the control module and supplies power to the control module; the bus communication interface is used for connecting the control module and an upper computer, the input end of the control module is connected with the input interface through the digital acquisition module and the analog acquisition module, the control module periodically sends acquired data to the CANFD bus through the bus communication interface, and the data comprises an analog quantity voltage value and a digital quantity value. According to the invention, the control response speed and the use of a large number of channel resources are improved, and the cost of a hard-wire-in-loop test board card is greatly reduced.

This invention discloses a multi-stage speed-regulating drilling hydraulic system, comprising a hydraulic pump, a multi-way valve, a series-parallel control valve group, a first hydraulic motor, a second hydraulic motor, and a rotary power head. The hydraulic pump is connected to the series-parallel control valve group via the multi-way valve. The series-parallel control valve group is connected to the first and second hydraulic motors to drive them to rotate and can adjust the series-parallel connection status of the first and second hydraulic motors. The output shafts of the first and second hydraulic motors are connected to the input end of the rotary power head. The output end of the rotary power head is connected to the drill rod to drive it to rotate and can be speed-regulated in multiple stages. The system features fast control response, high precision, and no energy loss during speed regulation. Based on the characteristics of the rock strata, the drilling rig can adaptively adjust the rotational speed of the rotary power head's output shaft, improving drilling efficiency and reducing overall operating costs. This invention also discloses a drilling rig and control method incorporating the above-mentioned multi-stage speed-regulating drilling hydraulic system.