41results about How to "Realize dynamic correction" patented technology

The invention discloses a dynamic bottleneck analytical method of a semiconductor production line. The method includes the steps that firstly, a key parameter capable of representing the bottleneck device characteristic is selected to be used as a bottleneck analysis index; secondly, the comprehensive bottleneck degree of equipment is described quantificationally through a combined definition method from the aspects of the relative production load, the utilization rate, the queue length of a buffer area and the like of the equipment, the bottleneck equipment is recognized by combining a bottleneck judging mechanism, and an equipment number is obtained; furthermore, a bottleneck prediction model of the semiconductor production line is established through an increased trimming type neural network based on the key parameter and the bottleneck equipment number, and the network structure is corrected in a dynamic mode based on a closed-loop control concept; at last, the key parameter affecting the bottleneck is analyzed through a single-factor testing method, and the reasonable value range of the parameter is obtained during bottleneck stabilization. By the adoption of the method, the bottleneck equipment can be recognized rapidly and effectively, the bottleneck at the next moment can be predicted, bottleneck drift is analyzed quantificationally under the condition of the dynamic effect of the key parameter, and a basis is laid for optimal dispatching of the semiconductor production line.

The invention provides an all working condition standard emission control method for a thermal power unit denitration system. The method comprises the steps that a main ring PID controller, a sub-ringPID controller and a feedforward controller are arranged in a denitration control system; the main ring PID controller calculates an ammonia injection control signal according to an outlet NOx concentration set value and an outlet NOx concentration feedback signal; the feedforward controller calculates an ammonia injection feedforward control signal according to the purge correction NOx concentration, the NOx estimated concentration, the inlet NOx concentration and the flue gas flow; and the sub-ring PID controller controls the opening of an ammonia injection valve according to the ammonia injection control signal, the ammonia injection feedforward control signal and an ammonia flow feedback signal. According to the invention, a gain scheduling model and an hour mean model are added intoa main ring to realize automatic control of the variable working condition of the denitration system; an inlet concentration purge correction model is introduced into a sub-ring to realize dynamic ammonia injection correction; the ammonia injection is accurately controlled; and a technical support is provided for whole process robustness and all working condition standard emission.

The invention discloses flow injection analysis-based online measurement method and system of atmospheric gaseous nitric acid. On the basis of flow injection analysis, gaseous nitric acid is reduced into nitrous acid by adopting a wet chemistry method combined with a spectroscopic method on the basis of a cadmium column reduction principle; a national standard method for Griess-Saltzman colorimetric detection of nitrite is adopted; nitrite is continuously collected by using a griess reagent on the basis of a flow injection method and is transmitted through a peristaltic pump; colorimetric analysis is carried out on the collected gas sample by combining a long-path liquid-core optical fiber; a gaseous nitric acid signal in the atmosphere is deducted, so that the measurement of the concentration of the gaseous nitric acid in the atmosphere is achieved. The device at least comprises a sampling unit, a gas/liquid transmission unit and a detection unit. The flow injection analysis-based online measurement method and system have the characteristics of being low in detection limit, high in sensitivity, high in spatial and temporal resolution, high in stability, low in interference and low in cost.

The invention belongs to the field of safety control of underground space engineering. The invention relates to a tunnel construction dynamic risk assessment method based on monitoring measurement. The method comprises steps of carrying out quantitative analysis on the construction state of each risk assessment index according to the tunnel monitoring and measuring standard; establishing a construction state grade evaluation standard of each risk evaluation index; adopting a percentage system assignment mode for each risk assessment index construction state level according to the highway tunnel design standard; establishing a tunnel construction safety dynamic risk assessment index construction state assignment interval; comparing the data processed by each index with each risk assessmentindex construction state grade evaluation criterion and a tunnel construction safety dynamic risk assessment index construction state assignment interval to obtain a construction state value of each risk assessment index; and substituting the construction state value of each evaluation index into a state variable weight formula to determine the state weight value of each index, carrying out dynamic analysis on the tunnel construction safety risk, and carrying out real-time control and dynamic tracking on the tunnel construction safety risk.

The invention provides a mine water inrush real-time monitoring, early warning and escape guide system and belongs to the mine early warning technical field. The system includes a mine water inrush monitoring and early warning device and a mine water inrush simulation system; the mine water inrush monitoring and early warning device includes host machines, slave machines a switch and a server; the mine water inrush simulation system is hosted by the server; after the server establishes a mine three-dimensional model and positions the position of the slave machines, the slave machines transmits mine information with appointed time intervals through a wireless ad hoc network, wherein the mine information is monitored in real time by sensor modules of the slave machines; the host machine integrates slave machine information and transmits the information to the server, so that water inrush simulation can be carried out; and after being dynamically corrected, simulation results are respectively transmitted to managers and underground personnel in the forms of dynamic simulation display and switching on guide lights. Related data of the system can be used for later-stage analysis and research. With the mine water inrush real-time monitoring, early warning and escape guide system adopted, a whole process before and after water inrush can be dynamically displayed in a simulated manner, and personnel positioning can be realized, and mine water inrush rescue can be effectively assisted.

The invention provides an ETL scheduling method and device, and the ETL scheduling method comprises the steps: obtaining a target SQL statement list regularly, wherein the target SQL statement list comprises a plurality of SQL statements, and each SQL statement comprises a corresponding statement type identifier; if it is determined that the SQL statements belonging to the operation type contain the sub-queries according to the statement type identifiers of all the SQL statements, generating a blood relationship comparison relation table based on the identifiers of the source tables and the identifiers of the target tables of the SQL statements containing the sub-queries; and sending the blood relationship comparison relation table and the target SQL statement list to a target scheduling server, so that the target scheduling server executes target scheduling operation according to the mapping relationship table, the target data platform information, the blood relationship comparison relation table and the target SQL statement list. The ETL scheduling method can improve the ETL scheduling accuracy, flexibility and efficiency, can realize dynamic correction of the data model and visual display of the scheduling result, and can improve the data processing reliability.

The invention discloses a method and a system for improving catalytic efficiency of an aging three-way catalyst, and relates to the field of engines. According to the rotating speed and load of an engine, a target excess air coefficient lambda 1, a target excess air coefficient lambda 2 and a target excess air coefficient lambda 3 are looked up in tables; according to the status and operation timeof the catalyst, a first smoothness coefficient a1 is looped up in a from-fresh-to-stable-state smoothness coefficient curve; according to the status and oxygen storage amount of the catalyst, a second smoothness coefficient a2 is looked up in a from-stable-to-aging-state smoothness coefficient curve; a target excess air coefficient lambda 12 from the fresh state to the stable state is worked out; a target excess air coefficient lambda 23 from the stable state to the aging state is worked out; a dynamic target excess air coefficient lambda is built by utilizing all the target excess air coefficients; a catalyst efficiency window is adjusted by utilizing the dynamic target excess air coefficient lambda to realize dynamic correction of the efficiency window and enable the catalyst to operate within an optimal range so as to optimize discharging.

The invention discloses an image correction method, device and system and electronic equipment. The image correction method comprises the steps that a visible light image and a depth image shot by a target object are acquired, a basic image pair is formed after transformation, and the basic image pair comprises a first image and a second image; performing correction processing on the basic image pair by adopting a preset correction mode to obtain a plurality of correction parameters; and performing alignment correction on the basic image pair based on each correction parameter to obtain a target image pair. The technical problems that dynamic correction between two different cameras cannot be achieved in the prior art, the adaptive environment is low, the image alignment effect is poor, and the use interest of a user is easily affected are solved.

The invention discloses a train wireless early warning monitoring system and a monitoring method thereof. The train wireless early warning monitoring system comprises a vehicle-mounted data acquisition module, a coding processing module, a power amplification module, an SMS function module, a GPRS module, a base station and a monitoring center. The vehicle-mounted data acquisition module is connected with the coding processing module, the coding processing module is connected with the power amplification module and the SMS function module respectively, and the power amplification module is connected with the GPRS module. The SMS function module is in bothway connection with the monitoring center and an adjacent train respectively through a wireless network, and the GPRS module is in bothway connection with the monitoring center and an adjacent train respectively through a wireless network. According to the train wireless early warning monitoring system, the characteristic that railway running trains have fixed running schedules is used, a plurality of trains can relay front and back, continuous and reliable communication networks are formed among trains, hence, even though the communication distance of the trains is limited after the scheme is adopted, good communication quality can still be guaranteed, and the communication quality can not be affected.

The invention discloses a multi-dimensional full-state data modeling method of a probability fusion type photovoltaic power station. Multi-source, heterogeneous, large-amount and dynamic data are obtained by sampling of voltage, current, temperature and irradiance sensors in a photovoltaic power station; data correlation grouping and joint calculation of current data and historical data in the group are carried out; the characteristic quantity of each group of equipment states in the power station is obtained; a result is calculated according to the characteristic quantity; data fusion is performed on a heterogeneous data source by using probability distribution of each state of equipment, so that a photovoltaic power station data model with high data utilization rate and low data complexity is established, fusion analysis of sampling data under a complex sensor network is realized, and the purposes of reducing system data burden and improving performance of a photovoltaic power station operation and maintenance monitoring system are achieved.

The invention relates to an intelligent illumination lighting general correction method. The method comprises the following steps: collecting color initial parameters of an LED light source; correcting the color initial parameter according to a preset correction algorithm to obtain a color correction parameter; sending the color correction parameter to the LED light source to be displayed; collecting color secondary parameters displayed by the LED light source after color correction; comparing the color secondary parameter with a preset color final parameter to obtain a comparison result; whenthe comparison results are the same, storing the color correction parameters in the LED lamp source; and when the comparison result is different, correcting the color correction parameter again untilthe color secondary parameter is the same as the preset color final parameter. According to the technical scheme, the correction algorithm is combined with the intelligent lamp, hardware parameters do not need to be manually adjusted multiple times, intelligent lamp codes with different LED lamp set characteristics do not need to be specially developed, and dynamic correction is achieved.

The invention discloses a method for a robot to collect position information, a terminal and a storage medium, and belongs to the technical field of robots. The method comprises the steps of according to the content of an article interaction task, sequentially finding out all articles needing to execute the article interaction task; according to a preset position information table, finding out the initial position of each article; sequentially navigating the robot to a stop point matched with each initial position, and judging whether the current stop position of the robot is suitable for interacting with the corresponding article or not; and if the current stop position of the robot is not suitable for interacting with the corresponding article, moving the robot to the position suitable for interacting with the corresponding article, and recording corresponding coordinates so as to update the position information of the corresponding article in the preset position information table and complete corresponding article interaction. According to the technical scheme, the technical problem that an existing method for the robot to collect the position information cannot continuously keep the accuracy of the position information while the data collection cost is reduced can be solved.

The invention provides a method and system for implementing webpage access control. The method includes the following steps that if a client side can not access to a webpage and the CPU utilization of a network processing server reaches a preset value, the network processing server acquires preset user levels and an access time interval comparison table from a mapping relation server, and executes webpage access again according to access time intervals until webpage access is implemented within preset time; a policy controller acquires the number of repeated access times that a user repeatedly executes webpage access until the user successfully implements webpage access at last in a preset period from the network processing server, and updates the user levels and the access time interval comparison table stored by the mapping relation server according to updating policies; the mapping relation server acquires access tolerance time of each user level in the preset period from the network processing server, and updates the user levels and the access time interval comparison table stored by the mapping relation server according to the adjusted policies.

The invention relates to a power compensation type rare earth permanent magnet motor and a control method. The power compensation type rare earth permanent magnet motor comprises a shell and a power compensation assembly arranged at the top of the shell. A plurality of stators are arranged on the inner wall of the shell, the stators are distributed around the inner wall of the shell at intervals, and excitation coils are arranged on the outer sides of the stators; a rotor is connected in the shell in a matched mode in the center line direction, magnetic steel is arranged at one end of the rotor, and a plurality of permanent magnets are arranged on the outer side of the magnetic steel at intervals in the circumferential direction. The power compensation assembly comprises a first compensator and a second compensator, the first compensator and the second compensator are both connected with a current detection mechanism, the first compensator is matched with the second compensator, and a switching mechanism is arranged between the first compensator and the second compensator; the switching mechanism can gate the first compensator or/and the second compensator to operate; and a correction unit is arranged in the power compensation assembly, and the correction unit is provided with a power input end and a power output end.