114 results about "Online setting" patented technology

Embodiments of end-to-end deep learning systems and methods are disclosed to recognize speech of vastly different languages, such as English or Mandarin Chinese. In embodiments, the entire pipelines of hand-engineered components are replaced with neural networks, and the end-to-end learning allows handling a diverse variety of speech including noisy environments, accents, and different languages. Using a trained embodiment and an embodiment of a batch dispatch technique with GPUs in a data center, an end-to-end deep learning system can be inexpensively deployed in an online setting, delivering low latency when serving users at scale.

This patent concerns novel technology for detection of zero-day data classes for domains with high-dimensional mixed continuous/discrete feature spaces, including Internet traffic. Assume there is a known-class database available for learning a null hypothesis that a given new batch of unlabeled data does not contain any data from unknown/anomalous classes. A novel and effective generalization of previous parsimonious mixture and topic modeling methods is developed. The novel unsupervised anomaly detector (AD) acts on a new unlabeled batch of data to either identify the statistically significant anomalous classes latently present therein or reject the alternative hypothesis that the new batch contains any anomalous classes. The present AD invention can be applied in an on-line setting. Labeling (by a human expert or by other means) of anomalous clusters provides new supervised data that can be used to adapt an actively learned classifier whose objective is to discriminate all the classes.

The invention relates to a machinery automatic steering control method which comprises the following steps that: positional deviation and course deviation are determined; according to the variance in the practical front wheel rotating angle of an agricultural machine, online setting of PID parameter is completed by means of parameter self-setting PID control algorithm; moreover, the expected front wheel rotating angle of the next moment is calculated, thereby realizing automatic steering control of the agricultural machine. Based on conventional PID navigation control method, the invention makes full use of the fuzzy control method; according to the variance in the practical front wheel rotating angle of an agricultural machine, the invention meets the different requirements of the machine on PID control parameter under different errors and error change rate, thereby realizing online setting of PID parameter. The invention not only has the advantages of fuzzy control such as flexibility and adaptability, but also has the characteristics of higher precision of PID control; therefore, the invention can increase the stability and precision of agricultural machine automatic steering control and the robustness of a control system.

The invention relates to a quadrotor unmanned plane control method based on a fuzzy expansion state observer and an adaptive sliding formwork. The method comprises steps that a quadrotor unmanned plane system model is established, and a system state and controller parameters are initiated; a tracking differentiator is designed; a non-linear expansion state observer is designed; fuzzy rules are established; a parameter adaptive law is designed; an adaptive sliding formwork controller is designed. According to the method, the expansion state observer is designed to estimate indetermination of a system model and external disturbance; a pole assignment method is utilized to determine an initial value of an expansion state observer parameter; the fuzzy rules are introduced to realize online setting for the expansion state observer parameter; the parameter adaptive law is designed to acquire ideal controller gain; the adaptive sliding formwork controller is designed, rapid stabilization of a system tracking error and convergence to a zero point are guaranteed, and rapid and stable position tracking and pose adjustment of the quadrotor unmanned plane are realized. The method is advantaged in that system performance is improved, and rapid and stable system position tracking and pose adjustment are realized.

The invention belongs to the technical field of relay protection of distribution networks, relates to a protection method for a distribution network comprising inverse distributed power, and provides an improved self-adaptive current fast tripping protection proposal comprising an IIDG power distribution system on the basis of the prior self-adaptive current fast tripping protection. The protection method still performs online setting on protection according to the prior mode of a self-adaptive setting value expression under the condition of no consideration of the connection of an IIDG when the IIDG is connected to the rear side of the protection, utilizes a negative sequence component to solve for the actual equivalent impedance of the rear side of the protection and uses an equivalent electric potential under the current failure state to set the protection under the condition of two-phase short circuit, still adopts a calculation method under the condition of no connection of the IIDG to solve for the equivalent impedance under the current failure state, obtains a corresponding equivalent electric potential according to the equivalent impedance, and uses the equivalent electric potential to set the protection under the condition of three-phase short circuit. The method improves the prior current protection configuration and guarantees the reliable failure removal of a distribution system comprising an inverse DG.

The invention discloses a fuzzy PID adaptive controller design method of an aero-engine based on RBF neural network feedforward and belongs to the aero-engine numerical control system field. The method is used for improving acceleration and deceleration work states of the aero-engine and components under effects of an extraneous condition and internal control so that the engine possesses a good acceleration and deceleration characteristic. The technical scheme is characterized by based on an aero-engine steady state test data sample, using an RBF neural network to carry out off-line training so as to form a feedforward controller; and based on that, adding a fuzzy adaptive PID controller. In the invention, through carrying out acceleration and deceleration control on each state of the aero-engine, the controller possesses a good tracking effect and a good controller parameter online setting capability, control quality of the system in a large range can be further increased and a control difficulty brought by a non-linear characteristic of the engine can be effectively solved.

Methods, systems and computer program products are provided personalizing recommendations of items with associated explanations. The example embodiments described herein use contextual bandits to personalize explainable recommendations (“recsplanations”) as treatments (“Bart”). Bart learns and predicts satisfaction (e.g., click-through rate, consumption probability) for any combination of item, explanation, and context and, through logging and contextual bandit retraining, can learn from its mistakes in an online setting.

The invention relates to a method for detecting deflagration in a coal mill outlet coal dust pipeline, and a detection system thereof. The detection method comprises the following steps: analyzing and screening all deflagration accident records to obtain parameter records having related characteristics and determine the deflagration instance of a milling system and characteristic parameters most related with the deflagration; sensing related pressure parameter signals by online arranged pressure sensors; recording a pressure parameter signal curve through a record analyzer; picking pressure signals through a detection device, determining and comparing abruptly changed pressure signal parameters, and instantly emitting an alarm signal through an alarm device if deflagration generation determination conditions are met; and instantly emitting a milling system running stopping command through a linkage module, and carrying out closed milling or steam fire extinguishing treatment in order to rapidly inhibit the deflagration of the milling system in an initial stage. The method and the system can realize efficient, stable and reliable detection and alarming, and can timely emit the signal after the deflagration and instantly stop the running of the milling system.

The invention relates to the field of spacecraft ground thermal tests and discloses a spacecraft thermal vacuum testing temperature control method. The method comprises the steps of measuring the position of a laser heating center with two thermodetectors with different measurement ranges at the same time to obtain average temperature T1 and average temperature T2 within two measurement ranges; taking the specific value T1/T2 of the two average temperatures as the setting parameter of a proportion and integral time coefficient in a PID controller, conducting real-time online setting on the proportion and integral time coefficient according to the change of T1/T2, and obtaining the change value of current heating power through the PID controller by means of the set coefficient; adjusting laser output power according to the change value. By the adoption of the method, under the condition that the overshoot of controlled temperature is reduced greatly, controlled temperature adjusting time is not increased, and the robustness and stability of a spacecraft thermal testing temperature control system are improved.

The invention belongs to the technical field of safety and stability control of an electric power system, which is applicable to a safety and stability emergency control system for setting a fixed value based on online real-time data. The online setting method disclosed by the invention comprises the following steps: 1) identifying the current operation state of the electric power system according to the real-time data collected by the safety and stability control system; 2) matching according to the operation state of the electric power system to get an offline emergency control strategy of an anticipated fault and a controllable measure space; 3) performing discretization treatment against continuous control measures and performing unification treatment on the controllable measure space to form the discretized measure space; 4) performing safety and stability evaluation on the system after control according to the offline fixed value under the anticipated fault based on the real-time profile data, and optimizing a control quantity according to the evaluation result; and 5) reversely deducting the online fixed value according to the control quantity after optimization. According to the method disclosed by the invention, the online setting of the safety and stability emergency control fixed value of the electric power system can be realized, and the reliability and economical efficiency of the emergency control strategy can be significantly improved.

The invention provides a quadrotor aircraft control method based on pole assignment and a fuzzy active-disturbance-rejection control technology. The method comprises the steps of: establishing a quadrotor aircraft system model, and initializing the system state and controller parameters; designing a high-order tracking differentiator; designing a non-linear expansion state observer; establishing a fuzzy rule; and adding non-linear feedbacks. The expansion state observer is designed for estimating uncertainty and external disturbance of the system model. The pole assignment method is utilized to determine initial values of parameters of the expansion state observer. The fuzzy rule is introduced to carry out online setting on the parameters of the expansion state observer. A non-linear feedback control rule is designed to ensure that the tracking error of the system rapidly and stably converges to zero, and rapid and stable position tracking and posture adjustment of the quadrotor aircraft are realized. The problems of uncertainty and external disturbance of the system model are solved, the influences of the system model uncertainty and external disturbance are compensated, the performance of the system is improved, and the rapid and stable position tracking and posture adjustment of the system are realized.

System and methods for relational time-series learning are provided. Unlike traditional time series forecasting techniques, which assume either complete time series independence or complete dependence, the disclosed system and method allow time series forecasting that can be performed on multivariate time series represented as vertices in graphs with arbitrary structures and predicting a future classification for data items represented by one of nodes in the graph. The system and methods also utilize non-relational, relational, temporal data for classification, and allow using fast and parallel classification techniques with linear speedups. The system and methods are well-suited for processing data in a streaming or online setting and naturally handle training data with skewed or unbalanced class labels.

The invention discloses a plate-shape parameter online setting method for a dual-UCM temper mill on the basis of mechanism models. The method of the invention is characterized in that: a. the equipment parameters of the dual six-roll UCM type temper mill are collected; b. the key rolling process parameters of the strip to be quickly online set are collected; c. the plate-shape parameters are roughly calculated; d. the plate-shaped parameters are finely calculated; f. the shrinkage movement of the middle rolls of the frame 1model and frame 2model of the temper mill, and the roll bending force of a work roll and a middle roll are calculated correspondingly to the roll shifting coefficient and the roll bending coefficient; furthermore, the online setting of the parameters are realized on the temper mill. When the comprehensive control method provided by the invention is adopted, the plate-shape parameter setting technique on the basis of the mechanism models can be applied online, and can meet the precision requirement on engineering, as well as can effectively ensure the plate-shape quality of the finished product, the service life of the roller, and the service life of the bent roll cylinder, thus bringing obviously economical benefits for the enterprises. The method of the invention is simple and clear and suitable for online application.

The invention discloses an online setting calculation method for relay protection. The method comprises the following steps: carrying out online verification on the agility, the selectivity and the load-hiding capacity according to the online operating mode and the relay protection filed operating constant value of a power grid, wherein the constant value set is taken as an initial online setting calculation range; combining the online operating mode and carrying out online setting calculation by virtue of a setting calculation formula to obtain a calculated constant value; acquiring a limited value of the constant value in the calculation range by adopting the setting calculation formula according to constraint conditions matched with superior protection; and judging whether the calculated constant value is greater than the limited value or not, if so, ending, and if not, classifying the constant value of the superior protection into the online setting calculation range for re-calculating. According to the method disclosed by the invention, the online setting calculation range is quickly identified through online verification and early warning, the online setting calculation for the relay protection constant values in a full grid with potential safety hazards is quickly realized, so that problems in the prior art are avoided, workers can immediately make a constant value optimizing policy, and the operating risk of the power grid is effectively lowered.

The invention provides an electromagnetic valve driving device capable of carrying out online regulation, which comprises an MCU (Micro Controller Unit), a first D/A (Digital-Analog) conversion circuit, a second D/A conversion circuit, a third D/A conversion circuit, a first amplifying circuit, a first comparator, a second comparator, a third comparator, a CPLD (Complex Programmable Logic Device) logic control circuit, a boost controller enabling circuit, a boost controller, a booster circuit, a high voltage driving circuit, a low voltage driving circuit, a cylinder selection driving circuit, a high voltage driving pipe, a low voltage driving pipe, a cylinder selection pipe and a sampling resistance R. Parameters of the first D/A conversion circuit, the second D/A conversion circuit and the third D/A conversion circuit and logic in the CPLD are subjected to online setting by the MCU. According to the invention, online adjustability of a driving high voltage and a driving current of an electromagnetic valve can be implemented. The electromagnetic valve driving device is used for driving the electromagnetic valve in an electric control common rail oil sprayer of a diesel engine.

The invention relates to a method and a system for demonstrating control curriculum teaching. The method comprises the following steps: content of control curriculums is divided into different levels according to chapter division, and different images corresponding to the different levels of content are manufactured; the gallery, the configuration function and the control of configuration software are adopted for establishing a control system for the content of the control curriculums, and animation of the established controlled object is linked; a program compiled by the configuration software, an ActiveX control and a control algorithm are combined to form a controller; the controller is connected with the established controlled object to form an analog control system; and a material image and a material video are used for demonstrating and illuminating an actual control system. In the invention, parameters of the controller and the controlled object can be set online, so that control effect can be visualized and displayed; and by setting characteristic parameters of the controlled object, dynamic characteristics of the controlled object, which correspond to different parameters, are demonstrated, thereby facilitating understanding and mastery of the content by students.

The invention relates to an online setting calculation method for a protection setting value of a power distribution automation terminal. The method comprises the steps: writing a setting value application form through a GOMS and triggers a setting initial process; transmitting the application form information to a DMS system through an information interaction bus; determining an electrical topological relation of the model by the DMS system; analyzing the constant value application form according to the electrical topological relation to associate a 10kV transformer substation outgoing line switch and a bus; analyzing the feeder information of the constant value application form according to the electrical topological relation to form a protection diagram, and displaying the protection diagram on a WEB interface; intelligently judging switch attributes according to the electrical topological relation to form a calculation scheme; intelligently querying a power supply range and a powersupply path according to the electrical topological relation, and calculating a fixed value of the switch; correcting the switch protection constant value according to the electrical topology information in cooperation with upstream and downstream constant value configuration; setting a calculation result for online cross auditing, and synchronizing the calculation result with the GOMS system; and archiving, storing and comparing the constant value notice in the system, and establishing automatic setting calculation and overall management of the constant value.

The invention discloses a realization method of a multiphase filter structure with synchronous arithmetic capability and real-time and variable orders, which realizes multiphase filtering operation and sampling rate transform on the basis of the scheme that structural repeatability of a branch filter in the multiphase filter structure is used, and a time-division multiplex kernel weighing summation unit is adopted. On the one hand, the scheme causes the multiphase filter structure to have synchronous data processing and throughput capacity with a working clock; on the other hand, the extract or interpolation rate of the multiphase filter structure can be dynamically changed by the online configuration of storage depth of data packet caching and the related operational control parameters, thus the multiphase filter structure has a function of the real-time and variable orders without additional hardware cost.

The invention discloses a relay protection setting method and system based on a graphical power distribution network. The relay protection setting method sequentially comprises the following steps of: converting data in a PMS (Power Management System) into a power grid topological graph, carrying out drawing of a graph block, acquiring a running state of a power system in real time, and carrying out online setting calculation and regulation on a value of a relay protection fixed value setting device; and then by a user, according to requirements of the user or the field, bringing the data into a power system model to carry out relay protection fixed value calculation of the power distribution network. According to the relay protection setting system based on the graphical power distribution network, a PMS data conversion device, a graphical configuration modeling device, a relay protection configuration device and the relay protection fixed value setting device are all connected with a relay protection fixed value management device. The relay protection setting method and system based on the graphical power distribution network have the advantages that the relay protection setting method and system are more convenient and rapid, and are convenient to manage; according to a power grid connection topological structural model and a power grid functional position model, description of a power grid circuit connection graph and calculation of a short circuit fault are carried out; and security of the data is effectively ensured.

A power transfer apparatus including a clutch having a biasing device for biasing the clutch piston in a direction in which the clutch discs engage with the clutch plates, a transmission brake disposed in line in an axial direction of the clutch, an actuator disposed in line in an axial direction of the transmission brake for disengaging the clutch at the same time of applying the transmission brake, and a planetary carrier sub-assembly disposed in line in the axial direction of the clutch, wherein the power transfer apparatus provided between an input shaft and an output shaft which are accommodated within a casing for selectively changing the speed of the output shaft.

The invention provides a relay protection online safety margin evaluation system. The system includes a master station end device installed in a dispatch center and a plurality of sub-station end devices installed in a transformer substation; the master station end device and the sub-station end devices are used for relay protection online safety margin evaluation; the master station end device includes a protection safety margin evaluation module, a data acquisition and processing module, a human-computer interaction module and a public data area; and each sub-station end device includes a protection safety margin evaluation sub module, a data acquisition and processing sub module, a human-computer interaction sub module and a public data sub area. Compared with relay protection online setting or online check, the system can accurately judge whether a protection constant value meets the requirements of the current operation mode of a power grid for protection selectivity and sensitivity and can assist in effectively eliminating the defect that the accuracy of relay protection online setting and online check results is influenced by the accuracy of power grid power flow, power grid parameters and a short-circuiting calculation model.

The invention relates to a balance container system capable of performing online setting check and an online setting check method based on the balance container system. The system comprises a balance container and a differential pressure transmitter connected with the balance container, wherein the balance container is connected with steam space and water space of a steam dome through a steam connection pipe and a water connection pipe respectively, and the differential pressure transmitter is connected with a boiler control system; a water supplementing pipe and an emptying pipe are vertically arranged at the upper part of a balance container barrel, the water connection pipe is vertically downwards provided with a water check pipe through a tee joint, the lower end surface of the water supplementing pipe is set as high as the water level detection upper limit position, and the upper end surface of the water check pipe is set as high as the water level detection lower limit position. The system is simple in structure and convenient to use and adjust, and can realize non-dismantling online setting check of the balance container; the online setting check method based on the balance container system comprises three adjusting modes including manual setting during initial assembly of a boiler, manual compensation setting during operation and automatic compensation setting, the setting is rapid and effective, stable and reliable working performance of the balance container can be guaranteed, and the time for setting check of the balance container can be greatly saved.