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989 results about "Control set" patented technology

System and method for a multi-agent consensus based-virtual inertia controller for low inertial microgrids

A control system to regulate frequency of an islanded microgrid that includes at least one grid-tied renewable energy source. The system includes a centralized ∞ controller, a multi-agent system, and a distributed control. The centralized ∞ controller generates active and reactive power setpoints. The multi-agent system is integrated into the grid through a grid-tied inverter coupled with an LCL filter. The distributed control controls the multi-agent system and the grid-tied inverter to adjust output power of a multi-agent microgrid storage cooperatively so that they achieve consensus in the energy while providing inertial support.
Owner:KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Low voltage ride through control method of flywheel energy storage system

The invention discloses a low-voltage ride-through control method of a flywheel energy storage system, which is based on a low-voltage ride-through control strategy of model predictive current control (MPCC) so as to improve the low-voltage ride-through capability of the flywheel energy storage system when a power grid fails. A future current value is predicted through system modeling and a prediction algorithm, so that effective control is realized. The MPCC-based machine side-power grid side coordination control strategy can quickly respond to the voltage sag of the power grid, provide reactive power support, stabilize the voltage of the direct current bus, and ensure the safe and reliable operation of the flywheel energy storage system during the voltage sag period of the power grid. A traditional pulse width modulation (PWM) technology is abandoned, the optimal switching state is directly selected through a limited control set, and hardware implementation of a power grid side converter is simplified. A differential control strategy aiming at a power grid symmetric fault (three-phase voltage sudden drop) and an asymmetric fault (single-phase grounding) is provided, the method is suitable for a complex power grid fault scene, and the system universality is improved.
Owner:HANGZHOU ELECTRIC EQUIP MFG +2

Digital twinning combined cracking equipment data processing method

The invention provides a cracking equipment data processing method combined with digital twinning, which comprises the following steps: acquiring initial state data and environmental data of a carbon fiber composite material in a cracking furnace, and performing time synchronization processing to obtain a time consistency data set; extracting pyrolysis characteristic parameters of interaction between the carbon fiber bundle and the matrix from the spatial registration data set, and calculating a reaction rate and pyrolysis behavior change of a microscopic scale of a fiber matrix interface to obtain a pyrolysis characteristic parameter set; if a deviation exists between the prediction result and a preset target carbon powder quality index, determining a heating power distribution adjustment amount and a change trend of an air inlet valve opening degree based on a deviation degree, and obtaining a control parameter adjustment set of the cracking furnace; and carrying out constraint and smoothing processing on the control parameter adjustment set to obtain a control set value, formatting the control set value into a closed-loop feedback instruction, and updating the closed-loop feedback instruction to a cracking furnace control system to obtain adjusted pyrolysis operation state data.
Owner:SHENZHEN YUKUN ENVIRONMENTAL TECHNOLOGY CO LTD

Agricultural producing area environment monitoring big data analysis method and system

The invention relates to the technical field of agricultural production area analysis, and relates to an agricultural production area environment monitoring big data analysis method and system, and the method comprises the steps: collecting agricultural production area multi-dimensional space-time environment data and crop growth state data, and carrying out the preprocessing of the collected data, so as to form space-time feature sequence data containing a timestamp; constructing, training and optimizing a soil organic matter dynamic evolution prediction model, and inputting the farming management measure dynamic regulation and control set quantity and spatial-temporal characteristic sequence data input in real time into the soil organic matter dynamic evolution prediction model for simulation analysis, so as to predict the dynamic evolution prediction of the soil organic matter after the farming management measure of the dynamic regulation and control set quantity is implemented. According to the expected change track and the final achievement state of the soil organic matter content of the agricultural producing area in the whole management period, an operation guidance scheme of the agricultural producing area is generated according to a simulation analysis result. According to the invention, through big data analysis and deep learning intelligent prediction, the utilization efficiency of agricultural resources and the sustainability of production management are significantly improved.
Owner:YUNNAN HANZHE TECHN CO LTD +1

Air-sea cross-domain network slice configuration and response method based on CTC8180 chip

The invention discloses an air-sea cross-domain network slice configuration and response method based on a CTC8180 chip, and belongs to the technical field of air-sea cross-domain communication and network slicing, and the method comprises the steps: S1, configuring and parallelly accessing NETCONF and CLI paths, and converting a configuration instruction into a CTC8180 chip call instruction; s2, creating a resource pool, a logic port, a binding interface and a VRF strategy based on a FlexE technology; s3, finishing forwarding and mapping configuration of a slicing strategy by combining SRv6 path programming, service level mapping and gport identification slice identification; s4, performance monitoring, data acquisition and fault detection are carried out through three protocols; s5, closed-loop control is formed through resource dynamic adjustment, path switching, strategy linkage and the like; and S6, multi-chip compatibility and stable adaptive deployment are realized through the steps of integrating S1 to S5. The invention provides a specific implementation method for constructing logic network slicing capability on high-performance forwarding hardware for air-sea cross-domain specific requirements, and provides reliable communication guarantee for high-dynamic heterogeneous services.
Owner:HARBIN ENGINEERING UNIVERSITY SANYA NANHAI INNOVATION & DEVELOPMENT BASE

Power Control in Power Headroom Report

A wireless device receives one or more configuration parameters indicating: one or more uplink power control sets; and a plurality of transmission configuration indicator (TCI) states for a cell. The wireless device transmits, in response to the one or more configuration parameters not comprising a two-power-headroom-report-mode (twoPHRMode) parameter that indicates to report two power headroom values associated with two sounding reference signal (SRS) resource sets of the cell, a power headroom medium-access control (MAC) control element (CE) indicating one Type 1 power headroom value for the cell. The one Type 1 power headroom value is determined using: first power control parameters in a first uplink power control set, of the one or more uplink power control sets, associated with a first TCI state of two indicated TCI states; and a first pathloss reference signal associated with the first TCI state.
Owner:OFINNO LLC

Rotating mirror angle calibration device and calibration method

The invention discloses a rotating mirror angle calibration device which comprises at least one light source, a motor, a motor driver, an angle sensor, a light spot position detection unit and a main control processing unit. Wherein light rays emitted by the light source are reflected to the light spot detection unit through the reflecting surface of the rotating mirror, and projection light spots received by the light spot detection unit are processed by the main control processing unit to obtain the direction angle of the light rays reflected by the reflecting surface. According to the optical lever principle, a light beam is emitted to the reflecting surface of the rotating mirror, the light beam is projected to the light spot position detection unit through a light path with a certain length, the angle of the reflecting surface is obtained by detecting the central position of a light spot, and the angle calibration precision is improved; in addition, a detection light path and rotating mirror control are integrated into one detection device, off-line detection of the rotating mirror can be achieved, rotating mirror calibration and system equipment calibration are separated, and calibration efficiency is improved.
Owner:CHENGDU JINGPIN NIGHT VISION OPTOELECTRONICS TECHNOLOGY CO LTD

Thermal spraying coating thickness online optimization control method based on digital twinning

The invention discloses a thermal spraying coating thickness online optimization control method based on digital twinning, and relates to the technical field of intelligent manufacturing, and the method comprises the steps: synchronously collecting multi-modal online observation data and process control observation data in a thermal spraying process, carrying out the time-space alignment, and generating a multi-modal observation set; performing adaptive optimization of multi-modal uncertainty gating on the candidate control set according to the credible thickness field confidence distribution map to generate a control instruction sequence; and the control instruction sequence acts on the thermal spraying process, response feedback data are continuously collected in the execution period, a new multi-mode observation set is generated according to the response feedback data, and real-time closed-loop optimization control is kept. According to the method, the thickness field with high credibility and the credible thickness field confidence distribution diagram can be generated through forward generation and uncertainty quantification of physical guidance, and depth coupling of multi-modal data and physical rules and accurate mapping of uncertainty are achieved.
Owner:YANGZHOU POLYTECHNIC COLLEGE

Compressor and heater control integrated system and vehicle

The invention provides a compressor and heater control integrated system and a vehicle. The control integrated system comprises a heat management controller, a compressor and a heater, the integrated controller is integrated with a compressor controller and a heater controller, and the integrated controller is in communication connection with the heat management controller; the integrated controller is in communication connection with the compressor pump body and the heater core body and used for controlling the compressor pump body and the heater core body, and the integrated controller and the compressor pump body are integrally installed to form a compressor assembly or the integrated controller and the heater core body are integrally installed to form a heater assembly. Through the innovative design of the integrated controller, centralized control over the compressor and the heater is achieved, the number of controllers and wire harness connection are reduced, the hardware cost and the system complexity are reduced, meanwhile, a software high-voltage interlocking function is adopted to replace hard wire interlocking, the system structure is further simplified, and the reliability and safety of the system are improved.
Owner:ZHEJIANG SMART INTELLIGENCE TECH CO LTD

Fault-tolerant control method for open-circuit fault of symmetric six-phase permanent magnet motor

The invention belongs to the technical field of electromechanical control, and particularly relates to a fault-tolerant control method for open-circuit faults of a symmetric six-phase permanent magnet motor. The method comprises the following steps: obtaining actual voltage vectors in alpha beta and xy subspaces under a normal condition; selecting six actual voltage vectors of which the xy subspace size is zero and the alpha beta subspace size is not zero as a finite control set; then dividing an alpha beta subspace into six sectors by using the six actual voltage vectors; then calculating a reference voltage vector by using a dead-beat control principle, and selecting two actual voltage vectors of a sector where the reference voltage vector is located as candidate voltage vectors; and selecting an optimal voltage vector through a cost function, and obtaining a corresponding power device driving signal. The problems that smooth transition from the healthy working condition to the fault working condition of the symmetric six-phase motor needs fault diagnosis and control reconstruction under the healthy working condition and the open-circuit fault working condition, the structure of a driving system is complex, and the transient switching process of the system is unstable are solved.
Owner:QINGDAO UNIV

Gas permeability monitoring method and system based on carbon dioxide geological sequestration

The invention discloses a gas permeability monitoring method and system based on carbon dioxide geological sequestration, and relates to the technical field of gas permeability monitoring, and the method comprises the following steps: obtaining geological data and a first constraint condition of a target stratum; disturbing the seismic wave frequency to generate a plurality of seismic monitoring control sets; constructing a three-dimensional geological model and a wave velocity change simulation model of the sequestration area, and performing forward simulation to obtain wave velocity change response data under different frequency combinations; wave velocity disturbance characteristic distribution caused by carbon dioxide injection under different earthquake monitoring control sets is obtained, and the set evaluation model is weighted and trained; constructing a second set according to an evaluation result of the set evaluation model and a corresponding earthquake monitoring control set; and fitting a multi-dimensional curved surface according to the second set, and screening an optimal seismic monitoring control set for seismic data acquisition and inversion, thereby solving the problem that traditional single-frequency-band inversion cannot dynamically match a stratum structure and permeability characteristics.
Owner:CENT FOR HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CGS

Intelligent constant humidity control FFU integrated system and dust-free workshop application method thereof

The invention discloses an intelligent constant-humidity control FFU integrated system and a dust-free workshop application method thereof, and relates to the technical field of workshop application, and the method comprises an environment sensing unit which is used for collecting internal and external environment parameters and equipment operation states of a workshop in real time; the prediction unit is used for training and generating a model with a time sequence prediction capability by fusing historical production data and real-time environment fluctuation characteristics so as to output a temperature and humidity change trend and a key adjustment time window of each partition of the workshop in a future time period; the decision-making unit is used for dynamically selecting a target operation strategy from a process priority mode, an energy-saving mode and an emergency mode based on real-time production process requirements, an environment sensitivity threshold value and an energy consumption constraint condition; the parameter optimization unit is used for performing wind field parameter adjustment on the FFU unit under the target operation strategy, and minimizing system energy consumption while maintaining uniform distribution of temperature and humidity; adjustment comprises fan rotating speed gradient configuration, air outlet angle cooperative control and airflow circulation path optimization.
Owner:GUANGDONG ZHUOWEI ENVIRONMENTAL TECH CO LTD

Unmanned aerial vehicle power management and information monitoring system

The invention relates to an unmanned aerial vehicle power management and information monitoring system, and the system comprises a power management and information monitoring device which is connected among an unmanned aerial vehicle power supply, an unmanned aerial vehicle flight controller, and an unmanned aerial vehicle load set. Wherein the power management and information monitoring equipment is internally integrated with a unified power management module used for receiving electric energy of an unmanned aerial vehicle power supply and providing one or more transformed stable power supplies for an unmanned aerial vehicle load set; and the information and control concentrator module is used as an information and control relay among the unmanned aerial vehicle flight control, the unmanned aerial vehicle load set and the sensor. The invention aims to help to solve the problems of complex flight control interface and overweight operation burden caused by direct data and control interaction between numerous airborne equipment and a flight controller, and low system integration degree and insufficient reliability caused by decentralized management of a power supply in an existing unmanned aerial vehicle system.
Owner:LITAI AVIATION EQUIPMENT (GUANGZHOU) CO LTD

Grinding-flotation collaborative process optimization method based on metal dissociation degree regulation and control

The invention relates to the technical field of mineral processing automation, and discloses a metal dissociation degree regulation-based grinding-flotation collaborative process optimization method which comprises the following steps: acquiring multi-dimensional sensor data in a grinding-flotation production process in real time; establishing a reference prediction model offline based on historical process data; in the online operation stage, the working condition drift state of the current process system is quantified and judged online; when it is judged that significant working condition drifting occurs, a residual compensation model is constructed online; and fusing the prediction result of the reference prediction model and the prediction result of the residual compensation model to generate a final process index prediction value. And based on the final process index predicted value, solving through an optimization algorithm, and generating a cooperative control set value. According to the method, the calculation cost and the data requirement of model maintenance are greatly reduced, and the response speed and the adaptive capacity of the system to the working condition change are remarkably improved, so that the long-term stability and reliability of the collaborative optimization effect are ensured.
Owner:LONGYAN UNIV

Temperature control method, system and equipment for titanium alloy forging and medium

The invention relates to the technical field of control and regulation, in particular to a temperature control method, system, equipment and medium for titanium alloy forging, and the method comprises the following steps: constructing a model library for describing thermodynamic behaviors of forgings, and dynamically generating a double-target temperature track; operating a state observer in real time to estimate the internal temperature field of the forge piece on line, and calculating a feedforward control set value based on a model predictive control framework; meanwhile, a feedback correction control quantity is generated through a feedback correction loop, and online correction is carried out on the model; finally, adaptively fusing the feedforward and feedback control quantities to generate and apply a final driving signal; by combining a physical model and a data driving method, the accurate modeling of deformation heat and the estimation precision of the core temperature are improved, metallurgy and cost constraints are balanced, it is ensured that the forge piece is formed in the optimal temperature window, and the problem that in the prior art, it is difficult to control the microstructure of the forge piece to be formed in the optimal temperature window is solved.
Owner:CHINA NAT ERZHONG GRP DEYANG WANHANG DIE FORGING CO LTD +1

Method for controlling a grass collecting device, control device and electronic device

The application discloses a control method and device of a grass collecting device and electronic equipment. The control method of the grass collecting device comprises the following steps: obtaining a grass unloading instruction; controlling the grass collecting box to move from a first position to a second position in a first direction according to the grass unloading instruction, wherein the first position is a position where the grass collecting box is in a closed state, and the second position is a position where the grass collecting box reaches a maximum opening angle; and controlling the grass collecting box to swing according to swing parameters, wherein the swing parameters comprise a swing angle, and the swing angle is smaller than the maximum opening angle. By using the control method of the grass collecting device, most of the grass clippings can be unloaded after the grass collecting box is lifted, and different direction inertial forces can be generated in the swinging process of the grass collecting box, so that a small amount of residual grass clippings can be removed through vibration, the situation that the grass is not completely unloaded is avoided, the grass unloading efficiency and effect are improved, and manual unloading operation is saved.
Owner:SHENZHEN MAMMOTION INNOVATION CO LTD

Control method and device of integrated cooker, integrated cooker and storage medium

The invention discloses a control method and device of an integrated cooker, the integrated cooker and a storage medium, and relates to the technical field of artificial intelligence. The method comprises the following steps: detecting a first temperature value in a steaming and baking oven in a current task period; according to the first temperature value and the temperature change rate between the first temperature value and a second temperature value detected in the previous task period, the current rotating speed value of the variable-frequency fan and the on-off state of the fixed-frequency fan in the current task period are determined; and the variable-frequency fan is adjusted based on the current rotating speed value, and the fixed-frequency fan is controlled based on the on-off state, so that the temperature of the steaming oven reaches the target temperature value. According to the technical scheme, the cooling fan of the integrated cooker is intelligently controlled according to the temperature in the steaming oven and the temperature change rate, the heating rate of the steaming oven is increased, meanwhile, the cooling efficiency of the steaming oven is guaranteed, and therefore the experience feeling of a user using the integrated cooker is improved.
Owner:QINGDAO HAIER WISDOM KITCHEN APPLIANCE CO LTD +1

Dynamic display system and method for expressive control of semiconductor design form

The invention discloses an expressive control dynamic display system and method for a semiconductor design form, and the system comprises an expression configuration module which is used for receiving a logic expression inputted by a user, and prompting available variables in the form in real time; the variable dependency analysis module is used for identifying dynamic variable reference in the logic expression; the change monitoring and scheduling module is used for monitoring a form data change event, acquiring an affected control set when variable value change is detected, and merging and optimizing expression calculation requests; the expression analysis service module is used for performing grammar check and dangerous operation filtering on the logic expression, processing an expression calculation request and returning an analysis result; and the state updating execution module is used for comparing the difference between the analysis result and the current control state according to the analysis result, and judging whether the current control needs to be updated or not according to the difference. According to the method, the problem of performance waste caused by global monitoring data change is effectively solved.
Owner:上海朋熙半导体股份有限公司

Crane sliding contact line power supply method

The invention relates to the technical field of crane electrical power supply, in particular to a crane sliding contact line power supply method which comprises the following steps: S1, monitoring the dynamic deformation quantity of a sliding contact line in real time, and obtaining the real-time contact resistance value of a current collector contact surface; s2, calculating the displacement compensation amount of the sliding contact line connector; s3, dynamically generating target contact pressure and transverse offset of the current collector; s4, a current collector executing mechanism is controlled to adjust the contact pressure and the transverse position; s5, if the contact resistance value is reduced to be below a preset threshold value and the deformation quantity fluctuation range is less than or equal to 0.5 mm, determining that the state is a stable power supply state; and S6, predicting a future deformation inflection point of the sliding contact line, and triggering an active compensation instruction before the inflection point. According to the invention, by constructing the slide wire power supply method integrating real-time monitoring, dynamic compensation and trend prediction, accurate adjustment and foresight control of the problem of unstable contact caused by deformation of the slide wire are realized, and the stability of the power supply system is improved.
Owner:BENXI BEIYING IRON & STEEL GROUP

Gallium nitride totem-pole circuit and control evaluation system of gallium nitride totem-pole circuit

The embodiment of the invention provides a gallium nitride totem-pole circuit and a control evaluation system of the gallium nitride totem-pole circuit, and the circuit comprises a gallium nitride power device which comprises an integrated semiconductor tube and an integrated drive circuit; the isolation chip is connected between the control module and an integrated driving circuit of the gallium nitride power device and is used for sending the pulse width modulation signal sent by the control module to the integrated driving circuit, and the isolation chip can ensure the electrical safety of weak current and strong current; the gallium nitride power device is used for controlling the on-off state of the integrated semiconductor tube through the integrated driving circuit according to the pulse width modulation signal sent by the isolation chip; under the condition that the integrated semiconductor tube is conducted, the voltage is output to the control module based on the bus voltage through the integrated semiconductor tube, and the driving circuit is integrated on the gallium nitride power device, so that the circuit design can be simplified, overcurrent protection and undervoltage protection are simultaneously carried out, and the safety of the gallium nitride totem pole circuit is improved.
Owner:EDGELESS SEMICON CO LTD OF ZHUHAI +1

Role switching in mesh network using periodic advertising

Various embodiments include methods for rotating control node roles between devices in a control cluster of a wireless mesh network. A method may include assuming, by a first device, a control node role based on a control node assumption timing in a schedule, and transmitting a periodic message to support the wireless mesh network. The method may also include using the schedule to identify a control node role end timing and a third device in the control cluster that will assume the control node role; after the control node role ends timing, sending the periodic message while monitoring an extended advertisement from the third device until the extended advertisement from the third device is received; and assuming a passive node role when receiving the extension announcement from the third device, or continuing the control node role when no extension announcement is received from the third device.
Owner:QUALCOMM INC

Hydraulic integrated dismounting device for rotary guiding system

The invention discloses a hydraulic integrated dismounting device for a rotary guide system, which relates to the technical field of petroleum instrument dismounting, and comprises an integrated base, a main support seat, an auxiliary support seat, a hydraulic controller, a main hydraulic cylinder, a hydraulic drive-control integrated table, a replaceable top block and a force sensor, the main supporting base and the auxiliary supporting base are both installed on the integrated base. A locking plate and a hydraulic assembly are arranged on the auxiliary supporting seat, and the hydraulic controller can control the locking plate to ascend and descend through the hydraulic assembly and achieve unlocking and locking of the auxiliary supporting seat. The main hydraulic cylinder is fixed at the end part of the integrated base; the replaceable top block and the force sensor are sequentially fixed at the plunger end part of the main hydraulic cylinder; the hydraulic drive-control integrated table is connected with the hydraulic controller, the main hydraulic cylinder and the force sensor. The device integrates hydraulic control and dismounting pressure monitoring, is convenient to operate, short in time consumption and high in dismounting efficiency, and can meet effective dismounting of similar mounting structures such as hot-charging bearing inner sleeves and inner magnetic steel.
Owner:四川天石和创科技有限公司

Mechanical arm six-degree-of-freedom remote controller based on rocker and axial ring

The invention belongs to the technical field of mechanical arm remote controllers, in particular to a mechanical arm six-degree-of-freedom remote controller based on a rocker and an axial finger ring, and provides the following scheme that the mechanical arm six-degree-of-freedom remote controller comprises a remote controller main body, a left control unit and a right control unit, and an STM32F405 main control MCU, a power management module, a communication module, a vibration feedback module and an LED indication module are arranged in the remote controller main body. An axial sliding ring structure is arranged on the basis of a two-dimensional rocker, and six-degree-of-freedom visual control over translation of the tail end of the mechanical arm in the X axis, the Y axis and the Z axis and rotation (pitch, roll and yaw) around the three axes is achieved in combination with a determined sensor, a processor and a communication scheme; an actuator switch button and a speed gear shifting wheel are integrated; the structure is simple and reliable, the ergonomic design is good, the manufacturing cost is controllable, and the response is real-time.
Owner:ZHEJIANG SHENCHEN KAIDONG TECHNOLOGY CO LTD

Micro-excitation-triggered multi-mode road adhesion coefficient real-time detection method and system

The invention belongs to the technical field of traffic control, and provides a micro-excitation-triggered multi-mode road adhesion coefficient real-time detection method and system, and the method comprises the steps: 1, carrying out the excitation triggering condition judgment; 2, generating a multi-mode excitation signal; 3, collecting dynamic response data; 4, feature fusion and attachment coefficient calculation; and step 5, integrating output and control. By applying high-frequency and low-amplitude micro-torque pulses, dynamic response of the tire is actively excited, and dependence on natural slippage is avoided; tire deformation, driving shaft torque attenuation and suspension vibration frequency spectrums are synchronously collected, and multi-dimensional characteristics of mechanics, acoustics and kinematics are covered; a grouping convolutional neural network and an attention mechanism are adopted to realize efficient feature extraction and fusion, and the bottleneck of traditional road adhesion coefficient detection is broken through.
Owner:ZHIKONG CLOUD DETECTION TECH (HEBEI) CO LTD

Historical flood inundation dynamic reconstruction method and system based on deep learning

The invention provides a historical flood inundation dynamic reconstruction method and system based on deep learning, and relates to the technical field of flood simulation, and the method comprises the steps: obtaining a standardized historical flood data set; positioning P terrain cavity deficiency; matching and multiplexing P adaptive filling models in a terrain filling model library according to the P missing feature vectors; carrying out multi-thread parallelization of P terrain cavity deletion; adopting the P corrected terrain structures to carry out pixel-level replacement of P terrain cavity missing to obtain corrected DEM data; and after a two-dimensional hydrodynamic model is constructed based on the corrected DEM data, a hydrodynamic boundary control set is set to drive the two-dimensional hydrodynamic model to execute flood simulation, and a historical flood dynamic evolution process is output. According to the flood simulation method and device, the technical problem that the flood dynamic reconstruction accuracy is affected due to the fact that the flood simulation accuracy is limited due to the fact that topographic data are incomplete and the simulation generalization ability in different areas is insufficient in the prior art is solved, and the flood simulation accuracy is improved.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Transmission Power Determination for Uplink Channel Repetition

A wireless device receives one or more configuration parameters indicating a plurality of sounding reference signal resource indicator (SRI) physical uplink shared channel (PUSCH) power control sets, which comprise a first SRI PUSCH power control set with a first index and a second SRI PUSCH power control set with a second index. The wireless device receives downlink control information (DCI) scheduling repetitions of a PUSCH transmission. The wireless device transmits, in response to an SRI field being absent in the DCI, a first repetition with a first transmission power based on a first pathloss reference reference signal (RS) index mapped to the first SRI PUSCH power control set with the first index equal to zero, and a second repetition with a second transmission power based on a second pathloss reference RS index mapped to the second SRI PUSCH power control set with the second index equal to zero.
Owner:OFINNO LLC

Predictive control method and system for two parallel three-phase converters based on ring current symmetry

The invention provides a prediction control method and system for two parallel three-phase converters based on ring current symmetry, and the method comprises the steps: firstly, screening out an optimal vector combination beneficial to ring current suppression, enabling the vector combination to overturn the polarity of the ring current change rate in a single period, and facilitating the optimization of the peak value and the average value of the ring current; on the basis, a brand-new model prediction control set is established; then, on the basis of the provided optimal control set, the circulating current average value is incorporated into a cost function of model prediction control, the provided cost function selects an optimal vector combination in real time by evaluating circulating current average value tracking errors of all combinations in two control periods, suppression of low-frequency circulating current and elimination of direct-current components are achieved, and meanwhile, the low-frequency circulating current and the direct-current components are controlled in real time. Due to the fact that the optimal vector combination achieves loop-to-polarity single-period flipping, the method can further push the loop frequency spectrum up to a high-frequency area. According to the invention, suppression of the low-frequency circulating current is realized, and the direct-current component of the circulating current is completely eliminated.
Owner:ANHUI UNIV OF SCI & TECH

Distributed cooperation and intelligent master control system of candy production line

The invention relates to the technical field of industrial automation control, and discloses a distributed collaborative and intelligent master control system for a candy production line, which comprises a master control unit and a plurality of resource nodes which are connected with each other through an industrial field bus supporting a precise clock synchronization protocol, the general control unit generates and broadcasts a virtual main shaft position signal to define a system time sequence progress; each resource node corresponds to a physical execution unit with different physical response hysteresis characteristics, an electronic cam curve table for defining a mapping relation between a control set value and a virtual spindle position signal is stored, the resource nodes are configured with phase lead compensation logic, and a phase offset is superposed before the curve table is inquired, so that the phase lead compensation is realized. According to the method, phase pre-compensation is introduced in a logic instruction level, so that the problem of cooperative mismatch caused by response inertia difference of heterogeneous physical execution units is solved, and accurate alignment and seamless flexible remodeling of multi-section actions in a time domain are realized.
Owner:GUANGDONG BOCHUAN MASCH TECH CO LTD