115results about How to "Improve quick response ability" patented technology

The invention discloses an FPGA (Field Programmable Gate Array)-based EtherCAT (Ethernet Control Automation Technology) main station device. The device comprises an EtherCAT bus interface RJ45, a network isolation transformer, a PHY (Physical Layer) chip, an FPGA module and a PCI/ARM (Peripheral Component Interconnection/Random Access Memory) extension interface, wherein the FPGA module is used for receiving data transmitted to an FPGA module by a CPU (Central Processing Unit) through an extension interface module; instruction data of the CPU is packaged and scheduled by an EtherCAT protocol drive module in the FPGA module to form a data frame to be transmitted to the PHY chip; the data frame is converted into a differential signal by the PHY chip and is transmitted to the EtherCAT network; after an EtherCAT data frame is received by each slave station, corresponding processing is performed and then the data frame is returned to a main station; after the data frame passes through the network transformer and the PHY chip, the data frame in the network is received by a data frame receiving module; the data frame is analyzed in the EtherCAT protocol drive module to extract effective data for the CPU to read a state and feed back data. According to the device, the communication with the CPU with the PCI interface or the ARM interface can be realized; the device has the advantages of good platform compatibility, high stability, high efficiency, high real-time property and the like, and has important application prospect to industrial automatic control.

The invention discloses a residual error posterior-based abnormal value online detection and confidence degree assessment method. The method comprises the steps of collecting data, establishing time series data, performing linear fitting on the time series data to obtain a linear combination formula of data at a current moment and p pieces of previous data, and predicting a data value of subsequent time; comparing the predicted data value with an actually detected data value to obtain a predicted residual error series; determining a probability density function of the predicted residual error series by adopting a KDE (Kernel Density Estimation) method; performing posterior ratio check on the predicted residual error series, and judging whether the data at the current moment is an abnormal point or not; and by taking the time series data as an input, building an SOM state model, obtaining state series and state transition probability matrixes, defining an abnormal scoring function, and outputting an abnormal score. By comparing the probability that the data is the abnormal point with the probability that the data is a normal point, the abnormal value in the pollutant discharge concentration time series data is identified online, so that the accuracy and reliability of abnormal value judgment are improved.

The invention discloses an alternating-current servo flux-weakening speed-regulating method. The method includes the steps that flux linkages corresponding to all motor temperature are measured; direct-axis inductance and quadrature-axis inductance which correspond to different torque are measured at base speed; a voltage limit equation and a torque equation are solved according to a Newton iteration method to obtain given values of a stator direct-axis current and a stator quadrature-axis current, and a torque-rotating speed table in which different temperature, different torque and different rotating speed correspond is formulated; according to the motor temperature, the corresponding temperature section of the torque-rotating speed table is selected, and then the given values of the direct-axis current and the quadrature-axis current are determined according to torque reference values and actual feedback rotating speed. Reference values of the direct-axis current and the quadrature-axis current are obtained at the same time according to requirements of actual working conditions, and the rapid response performance of a system is improved. Meanwhile, due to the fact that changes of the quadrature-axis inductance along with the torque and changes of the flux linkages along with the temperature in a motor are considered for formulating different torque-rotating speed tables, influence of parameter drifts caused by changes of the operation state of the motor is avoided, and the control accuracy of the system is improved.

The invention discloses a method of achieving third party logic distribution information sharing. It provides a service operator schema so that all logic service data are stored in center database; users can generate and press object's mark or inquire the posting or receiving information of processing condition on the control of software system; logic firm website can collect object's mark information quickly and storage them into center database, it also can do object's distributing plan and service operation of logic information inquiring and statistic and so on; center database can ascertain all data form unified regulation so that different firms and different websites of one firm can share the logic information at the base of internet.

The present invention provides an information interaction system of digital control processing workshop, wherein the information interaction system comprises an information interaction server, manufacturing executing software which is disposed on the information interaction server, and an information alternation terminal provided with a touch display screen. The manufacturing executing software realizes the information alternation. The manufacturing executing software comprises a data collection and information interaction module, a work order management module, a technical data management module, a pattern browsing and program transmission control module and a data statistics analysis module. The system can automatically display the work order and technical data on the information interaction terminal of each station in the production field dynamically according to the device number and employee number of operator. The operator can browse the technical data, download the digital control processing program and quickly collect the production data through the information interaction terminal. The invention realizes the dynamic transmission of field production information and quick collection of production data in the digital control processing workshop. The real-time implementation of workshop production control is increased. The quick response capability and production efficiency of production process of digital control workshop can be greatly increased.

The invention relates to an energy storage battery system power giving method for stabilizing wind power grid connection power fluctuation. The method comprises the following steps of: (1) determining a sampling control period, and initializing a filtering time constant and a wind power grid connection target power offset value; (2) reading current battery charge percent; (3) calculating a smoothened wind power grid connection power target value; and (4) calculating the output target value of an energy storage battery system. According to the method provided by the invention, the change rate of wind power output power fluctuation can be reduced, power smoothening standby of the energy storage battery system is considered simultaneously, and the wind power smoothening capability of an energy storage battery is brought into full play.

The invention relates to an anti-vulnerability-exploitation method and system, belongs to the technical field of network security and aims to solve the problems of high maintenance cost and incapability of detecting new overflow vulnerabilities in time in the conventional vulnerability scanning scheme. The method comprises the following steps: injecting a vulnerability protection module into a process to be protected; detecting vulnerabilities by using the vulnerability protection module; intercepting vulnerabilities when running of the vulnerabilities is detected. By adopting the method and the system disclosed by the invention, the vulnerabilities can be detected in time during running of the vulnerabilities, and the vulnerabilities are prevented from running continually.

The invention relates to an LCL type three-phase grid-connected inverter control method. The method includes first obtaining a preliminary PWM modulation signal by a traditional active damping controlmethod, then estimating the current after the resonance peak is suppressed according to the feature that an L-type filter and an LCL filter are consistent in characteristic at the low and medium frequency, obtaining the difference between the current and the actual current to be corrected by a current observer at the low and medium frequency, meanwhile feeding the higher harmonic part of the error current back to a control loop and introducing a network voltage feed forward item to obtain a final modulation signal and further control the access current of a grid-connected inverter. The accesscurrent is controlled in a two-phase rotating coordinate system, and the shortcoming that PI control cannot track an AC signal without static difference is overcome. On the basis of taking into account the advantages of active damping, the access harmonic components are further attenuated, and the grid-connected current quality and the system rapid response capability are improved. The method hasthe advantages of high control precision, high reaction speed and high reliability and is suitable for new energy integration grid-connected power generation systems.

The invention provides an overall control method of a large-angle maneuvering high-resolution microwave remote sensing satellite, comprising the following steps: S1, systematically identifying the difference between a large-angle maneuvering high-resolution microwave remote sensing satellite and other existing satellites at the technical level, and determining key problems to be solved; S2, determining a scheme of maneuvering around the rolling shaft of the satellite according to the specific requirements of large-angle maneuvering; and S3, in view of the fact that the detection range of sensors fixedly connected to the satellite changes with maneuvering of the satellite due to large-angle maneuvering, inventing a sensor field analysis method based on a space digital ball method to determine the layout of the sensors on the satellite. The high-resolution microwave remote sensing satellite has the ability to revisit a to-earth observation target. The technical difficulty in large-angle quick maneuvering of the attitude of the satellite is solved. The problem on multi-system integrated control is solved. The use efficiency of the satellite is improved. The problem of electromagnetic compatibility and the problem of wireless high-power transmission during whole-satellite vacuum thermal test are solved.

The invention discloses a failure prediction and health management system of a vehicle-mounted train set. The failure prediction and health management system comprises a reserved number of vehicle level PHM sub systems and a train set level PHM sub system. Each vehicle level PHM sub system is provided with a vehicle intelligent mirror image model, and the train set level PHM sub system is providedwith a train set intelligent mirror image model. The system adopts a distribution type structure, and can perceive relevant information from a part level to a sub system level to the vehicle, the portability of the system is high, transparent management and analysis on the train state are achieved based on the vehicle-mounted intelligent mirror image model, the cost spent on vehicle-mounted trainset failure prediction and health management system analysis and application is lowered, the rapid response capability of enterprises is improved, the state maintenance capability is achieved, and the proportion of service income of the enterprises is increased.

The invention discloses a multi-quadrotor master-slave type guaranteed-performance neural adaptive cooperative formation control method, and relates to the field of multi-quadrotor formation automaticcontrol. The method has the characteristics of the low online calculation complexity and capability of quickly and smoothly achieving interference identification and compensation. Specifically, a preset performance function, an error conversion technology and a consistency technology are introduced into a four-rotor trajectory loop, an originally constrained formation error control problem is converted into an error stabilization problem of an unconstrained system, and it is ensured that a formation synchronization error meets a preset transient performance and the steady-state precision; a predicted minimum parameter learning neural network approximator which is low in online learning dimension and high in calculation real-time performance is constructed for the trajectory and attitude loop, so that smooth and rapid online learning and compensation of unknown non-linear interference are achieved, the coupling influence of a control loop and a neural learning loop is eliminated, and the real-time performance and the rapid response capacity of formation control of the multi-quadrotor system can be remarkably improved.

The invention discloses a communication method for a multi-connected air conditioner. The communication method comprises the following steps of regular communication, interrupted communication, and interrupted communication and regular communication combining. According to the communication method for the multi-connected air-conditioner, regular communication and interrupted communication are combined for communication between an outdoor main unit and outdoor slave units and communication between the outdoor main unit and indoor units, so that the requirement for orderly communication data exchange between the outdoor main unit and the outdoor slave units and between the outdoor main unit and the indoor units can be met, important information (the on-off state, the set mode, the set wind speed, the set temperature, accidental shutdowns of the indoor units, accidental shutdowns of the outdoor units, centralized control over the outdoor units and the like) of the indoor units or the outdoor units can be rapidly sent to a specified target, the quick reaction capability of a control system is improved, and accordingly the air conditioner can well meet the requirements of users, and the use comfort of the users is improved.

The invention discloses a design method of an automatic pilot for a strapdown seeker. In control structure, a traditional mature three-loop overload tracking mode with pseudo attitude angle is adopted; three dominant poles of the automatic pilot are superposed on a real axis, and the superposed position is far from an imaginary axis on the basis of guaranteeing system stabilization margin and super small reverse overshoot so as to improve rapid response capability. On the basis of existing control system, the rapid response capability of the automatic pilot is lifted as much as possible, and any positive overshoot is avoided at the same time so as to realize overload instruction smooth tracking, reduce unfavorable influence to the strapdown seeker object identification algorithm by the automatic pilot substantially, and lift final hit precision greatly; in addition, the method also has the advantages of simple algorithm and easy engineering realization.

A temperature control device of a flue gas desulfurizing and acid-making hot blast stove comprises a programmable controller, wherein a coke oven gas pressure regulating valve, a coke oven gas pressure sensor, a coke oven gas flow sensor and a coke oven gas flow regulating valve are mounted on a coke oven gas inlet pipeline; a combustion air flow sensor and a combustion air flow regulating valve are mounted on a combustion air inlet pipeline; a temperature sensor and a pressure sensor are mounted on the flue gas desulfurizing and acid-making hot blast stove; and the programmable controller exchanges signals with the coke oven gas pressure regulating valve, the coke oven gas pressure sensor, the coke oven gas flow sensor and the coke oven gas flow regulating valve on the coke oven gas inlet pipeline, exchanges signals with the combustion air flow sensor and the combustion air flow regulating valve on the combustion air inlet pipeline, and exchanges signals with the hot blast stove temperature sensor and the hot blast stove pressure sensor on the flue gas desulfurizing and acid-making hot blast stove. The temperature control device of the flue gas desulfurizing and acid-making hot blast stove can quickly and accurately control the temperature and the pressure of the hot blast stove, so that the hot blast stove can meet flue gas desulfurizing and acid-making requirements of a sintering machine.

The invention provides a frame-type bidding and tendering management platform for industrial shaped products. The frame-type bidding and tendering management platform comprises a server, and a biddingmodule and a bidding evaluation module which are respectively in communication connection with the server, wherein the bidding module comprises a frame type bid inviting variety detail list; the quotation sub-module is used for filling and reporting bidding prices by suppliers on the basis of the frame-type bidding variety detail list; the bid evaluation module comprises a single product price evaluation sub-module which calculates a single product quotation score for each supplier for the single product quotation of each supplier; the supplier comprehensive price review sub-module is used for calculating a comprehensive quotation score of each supplier based on the single product quotation score of each single product of each supplier; the weight coefficient sub-module is used for calculating the price weight of a single product; and the weighted price review sub-module is used for calculating the weighted price score of the supplier based on the comprehensive quotation score of thesupplier and the price weight of the single product.

The invention discloses an automatic leveling system of an aerial platform of a hybrid cantilever crane, the aerial platform and a leveling method. The automatic leveling system comprises a primary leveling mechanism, a secondary leveling mechanism, a hydraulic driving system and a controller, wherein the secondary leveling mechanism comprises a fly jib amplitude cylinder (2), a second swing rod (3), a second connecting rod (4) and a fly jib (5), the primary leveling mechanism comprises a workbench leveling cylinder (6), a first swing rod (8), a first connecting rod (9), a connecting frame (10), an oscillating cylinder (11) and a bracket (12), and the hydraulic driving system comprises a primary hydraulic driving system and a secondary hydraulic driving system. According to the leveling system, the aerial platform and the leveling method, the problem that an output oscillating angle of a leveling oil cylinder in a twin-stage extensible hybrid arm aerial working platform with a fly jib is limited is solved, the leveling function of a workbench in a large spatial range is realized with an 260-degree amplitude angle of a working arm, and the quick response and the control precision of the leveling system are improved in an electrical-hydraulic leveling manner.

The invention provides a rotary transformer and a rotating body equipped with same, and belongs to the technical field of detection. The rotary transformer comprises a stator and a rotor, wherein the stator comprises a stator yoke and stator detection teeth, and the stator detection teeth are arranged on the stator yoke; the spanning angle of the stator yoke is smaller than 360 degrees; the rotor comprises a rotor iron core; rotor salient poles are arranged on the surface of the rotor iron core; the number of the stator detection teeth is 4*K, wherein K is a positive integer; the number of the rotor salient poles is N, wherein N is a positive integer; each stator detection tooth is at most wound with a coil; the rotary transformer comprises at least one set of detection coil system; each detection coil system comprises a plurality of coils wound around the stator detection teeth; inductance of the coils is changed along with changes of the rotating angles of the rotor; and the rotating body comprises a rotating body main body and the rotary transformer, wherein the rotary angle of the rotating body main body and the rotary transformer are in a regular relationship. The miniaturization and light weight of the rotary transformer are promoted; and in addition, winding and line connection are simpler and more effective.

The invention discloses a medium-speed coal mill outlet air temperature adjusting method. The medium-speed coal mill outlet air temperature adjusting method mainly involves a data acquisition module,a calculation module, a big data analysis module and an output module, wherein the data acquisition module is used for acquiring a furnace coal quality parameter and a boiler real-time operation parameter, the calculation module determines the inlet air temperature of the coal mill through heat balance, the big data analysis module is used for determining the inlet cold and hot air door opening degree of the coal mill corresponding to the inlet air temperature of the coal mill, and the output module is used for outputting the real-time coal mill cold and hot air door opening instructions. Compared with the prior art, the medium-speed coal mill outlet air temperature adjusting method has the advantages that the rapid response capability of the outlet air temperature of the coal mill and thesafety and economic operation levels of the boiler are improved.