32results about How to "Change operating conditions" patented technology

Certain example embodiments relate to techniques for detecting anomalies in streaming data. More particularly, certain example embodiments use an approach that combines both unsupervised and supervised machine learning techniques to create a shared anomaly detection model in connection with a modified k-means clustering algorithm and advantageously also enables concept drift to be taken into account. The number of clusters k need not be known in advance, and it may vary over time. Models are continually trainable as a result of the dynamic reception of data over an unknown and potentially indefinite time period, and clusters can be built incrementally and in connection with an updatable distance threshold that indicates when a new cluster is to be created. Distance thresholds also are dynamic and adjustable over time.

The invention discloses a process for preparing coal water slurry or the mixture of coal water slurry with alkaline metal and / or alkaline earth oxides or hydroxides by the method of low level coal continuous transformation in subcritical or supercritical water which comprises, conducting continuous high pressure conveying of coal water slurry, charging into reaction system, usting the peculiarity of the hypercritical water to extracting and pyrolising low grade coal, converting it into useful product in gas, liquid and solid forms.

A transmitting device with digital predistortion is disclosed. The device produces a power word derived from an amplitude component of a digital modulation signal and a desired output power. The power word is compared with a limit value, and depending on the result, one pair of predistortion coefficients is selected and distortion of a first and second component of the digital modulation signal is thus carried out. The phase and the amplitude of a carrier signal are then modulated with the distorted components. Selective distortion of the modulation signal is carried out by comparison of the power word with a limit value, when the signal quality or the linearity of the modulated carrier signal falls below a predetermined limit value. Otherwise, the predistortion unit can be switched off, and the power consumption can thus be reduced.

A process for carrying TiO2 photocatalyst on metal surface includes such steps as cleaning metal surface, anodizing in acidic medium, hydrolyzing, leaching and coating tetrabutyl titanate and TiO2 film under the weak alkaline condition by the sol-gel-powder suspension method, and igniting at proper temp. Its advantages are strong photocatalysis action for degradating organic pollutants, and good electric conductivity and machinability.

Embodiments are directed to computer methods and systems that build and deploy a pattern model to detect an operating event in an online plant process. To build the pattern model, the methods and systems define a signature of the operating event, such that the defined signature contains a time series pattern for a KPI associated with the operating event. The methods and systems deploy the pattern model to automatically monitor, during online execution of the plant process, trends in movement of the KPI as a time series. The methods and systems determine, in real-time, a distance score between a range of the monitored time series and the time series pattern contained in the defined signature. The methods and systems automatically detect the operating event in the online industrial process based on the determined distance score, and alter parameters of the process (e.g., valves, actuators, etc.) to prevent the operating event.

A low-oxygen content exhaust flow produced by an engine that is combusting, on average, a stoichiometric mixture of air and fuel generally contains various unwanted gaseous emissions. The exhaust flow is treated by an exhaust aftertreatment system that includes a three-way-catalyst (TWC) and an ammonia-selective catalytic reduction (ammonia-SCR) catalyst positioned downstream from the TWC in a flow direction of the exhaust flow. The ammonia-SCR catalyst includes (1) a base metal ion-substituted zeolite and/or a base metal ion-substituted silicoaluminophosphate and (2) an oxygen storage material selected from the group consisting of a metal oxide or a mixed metal oxide that exhibits oxygen storage and release capacity. The serial arrangement of the TWC and the ammonia-SCR catalyst enhances the conversion of NO_X to N₂ in the low oxygen-content exhaust flow produced by the engine and helps prevent ammonia slip to the atmosphere.

This invention relates to a biodegradable polymer composition which is particularly suitable for use in the manufacture of articles having a high heat deflection temperature (HDT) by injection moulding and thermoforming.

The invention discloses a lock-up clutch control method and system for an automatic transmission provided with a hydraulic torque converter. The control method includes the steps that a lock-up clutchis controlled to enter slip frequency control under the condition that the lock-up clutch is in a locked state and the accelerated rising condition occurs; and when the lock-up clutch is in the slipfrequency state, if the condition that the lock-up clutch quits slip frequency control is met, the lock-up clutch is controlled to quit slip frequency control. According to the method and the system,the accelerated rising condition can be improved, so that the dynamic property and comfort of the whole vehicle are balanced.

The invention relates to a single-shaft variable speed second-level asynchronous heart pump based on an error term iterative curve flow channel, and a use method. The single-shaft variable speed second-level asynchronous heart pump comprises a pump shell flow channel with a pump inlet and a pump outlet, wherein the pump shell flow channel is internally provided with a fixed guide vane body, and afirst-level impeller and a second-level impeller are fixed on a transmission shaft through keys. The single-shaft variable speed second-level asynchronous heart pump also comprises that a direct current permanent magnet motor is fixed on the inner side of a hub of the fixed guide vane body through a shock absorption supporting seat, the shell of a frequency sensor and the tail of the hub of the fixed guide vane are inlaid into a whole, the fixed guide vane body is provided with a plurality of guide vanes which are evenly distributed around an x shaft, the fixed guide vane body is fixed on theinner wall of a shell cavity of the pump shell flow channel through the guide vanes, and the molded line of the inner wall of the shell cavity is an error term iterative curve. The single-shaft variable speed second-level asynchronous heart pump has the advantages of a compact structure, a large flow, a high lift and a small injury to blood cells, a possibility of hemolysis due to the heart pump can be lowered, through a frequency sensor, the revolving speed of the pump can be changed in real time to meet a real-time requirement of the blood pressure and the blood flow of the human body.

The invention provides a design method of a rectification process for synthesizing cyclohexanone-cyclohexanol by a cyclohexene technology. The method is concretely characterized in that existing four-tower alcohol ketone rectification is optimized, and double-effect heat pump heat integrated rectification is introduced; the tower bottom material of a first light tower is used as a feeding materialfor a second light tower, the tower top material of the first light tower is extracted, a material discharged from the top of the second light tower is circulated back to the feeding position of thefirst light tower, the tower bottom material of the second light tower is used as a feeding material for a ketone tower, the operation parameters of the light tower system are optimized optimal values, two alcohol towers are adopted to replace an existing cyclohexanol single-tower separation process, and a gas phase at the top of a first alcohol tower is used as a heat source for the bottom of theketone tower. Compared with an existing four-tower process, the method can remarkably reduce the energy consumption and TAC in the cyclohexanone-cyclohexanol rectification process under the conditionthat the same separation requirement is met.

A process for producing acrylonitrile or methacrylonitrile, wherein a molybdenum compound, which is convertible to molybdenum oxide and not supported on a carrier is added to a fluidized bed reactor as an activator, in such a way that the ratio y of molybdenum atoms in the oxide catalyst represented by the formula:MoyBipFeqAaBbCcDdEeOfwill be maintained in the range of 1.02x to 1.12x (x=1.5p+q+a+c+1.5d+1.5e) during an ammoxydation reaction.

The present invention discloses a device for measuring the width of the crystallization metastable region of a micro-scale flow system. The device comprises a temperature control system, a microscope,a camera, a computer and an injection pump, and the temperature control system is composed of a constant-temperature circulating water bath device, a first heat preservation jacket, a second heat preservation jacket and a temperature sensor. According to a method for measuring the width of the crystallization metastable region of the micro-scale flow system, by using the above device, a measuredsolution with the temperature being the initial test temperature and reaching the saturation state at the initial test temperature is injected into a micro-channel at the constant flow rate through the injection pump, and by combining the amplification effect of the microscope on the micro-channel, the camera is adopted to shoot the measured liquid in the micro-channel in real time, the crystallization state of the liquid is captured, the crystallization point temperature is obtained, the difference value between the initial test temperature and the crystallization point temperature is calculated, and the difference value is the width of the crystallization metastable region of the micro-scale flow system of the measured solution. The device and the method provided by the invention providethe quantitative data analysis support for the micro-channel-crystallization coupling technology research.