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101 results about "External variable" patented technology

In the C programming language, an external variable is a variable defined outside any function block. On the other hand, a local (automatic) variable is a variable defined inside a function block.

Multi-section type convexity regulating and controlling roller with internal cooling mechanism

ActiveCN110293132ALarge internal contact pressureGood magnetic insulation and heat insulation performanceMeasuring devicesRollsTemperature controlHeat balance
The invention discloses a multi-section type convexity regulating and controlling roller with an internal cooling mechanism. A plurality of annular grooves are formed in the surface of a core roller at equal intervals, and annular groove sealing rings matched with the annular grooves are arranged. Two axial water channel holes which are symmetrically formed at 180 degrees are formed in one side ofthe core roller in the axial direction. Two symmetric radial through holes are formed between each annular groove and the corresponding axial water channel hole. The water channels can effectively improve the convexity heat balance rate caused by heat, and the convexity regulating and controlling rate of the roller is increased. A disc type electromagnetic bar is arranged in a central axial through hole of the core roll and is located in the centers of the annular grooves of two core rollers. A flat spiral coil is connected with a slip ring, and then is connected with an external variable-frequency power supply and a cooler. An external signal line of a temperature sensor is connected with the slip ring and then connected to a temperature control module. The model is high in flexible regulating and controlling capability, the regulating and controlling range is wide, and a high-order roller type curve which is stable in roller type and continuously variable can be formed.
Owner:YANSHAN UNIV

Combined cyclone separation/collection device and method for separating and collecting pollen

The invention discloses a combined cyclone separation / collection device and a method for separating and collecting pollen based on the device. The device comprises a cylindrical settling chamber and a double-cylinder cyclone. The cylindrical settling chamber is down communicated with an umbrella-type taker. The sidewalls of the top of the cylindrical settling chamber are communicated with the outer cylinder of the cyclone. An air duct is arranged outside the cylindrical settling chamber, and is communicated with the cylindrical settling chamber and the inner cylinder of the cyclone, respectively. Besides, the air duct is connected to an external variable frequency fan. A cylinder screen, a reflecting cone and a three-way air blowback pipe are arranged in the inner space of the cylindrical settling chamber. The rotating central shaft of the reflecting cone rotates through connection with an external variable speed motor. A stripper plate and a discharge chute are arranged on the bottom of the cylindrical settling chamber. Furthermore, a pollen collecting chamber is arranged on the bottom of the double-cylinder cyclone. The method comprises the following steps of: suctioning dust-containing pollen by means of an airflow, and filtering the dust-containing pollen; performing separation in the cylindrical settling chamber; and collecting the pollen in the cyclone, and purifying the dust-containing airflow for recycling. The device and the method of the invention are capable of effectively improving the pollen separation / extraction efficiency and preventing dispersion of pollen, and suitable for being popularized and used.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Determining situational patterns of use for computing systems

Techniques for determining situational patterns of use of computing systems are disclosed. A situational pattern of use can be determined based on the situations encountered by the computing system as the situations occur without having to predefine a set of situations. Generally, a situation can be determined and/or defined based on the context of use of the computing system when the use occurs. The context of use can, for example, be determined based on internal and external variables including the physical environment where a device is used and biological data associated with a person who uses the device. The state of use of the computing system can, for example, be determined based on the state (or status) of one or more components of the computing system (e.g., the state of one or more active applications that are being used by person). Similar to the context of use, the state of use can be determined as the use occurs without having to predefine potential uses of the computing system (e.g., there is no need to predefine or know the applications that will be used on a device). Moreover, the state of use can be connected to context of use defining a situation in which the state of use has occurred to allow determining a pattern of use of the computing system at least based on the association of the state of use with the situation effectively defined by the contextual usage data which can be obtained as and when the use occurs.
Owner:SAMSUNG ELECTRONICS CO LTD

Soft measuring method of key parameters in edible mushroom fermenting process based on improved CS-BPNN

InactiveCN107782857ASolve difficult problems that are difficult to detect onlineReduce workloadArtificial lifeTesting foodOptimal controlNetwork model
The invention discloses a soft measuring method of key parameters in an edible mushroom fermenting process based on an improved CS-BPNN. The method includes steps of analyzing a technical mechanism ofthe edible mushroom fermenting process, and selecting a proper external variable to apply an assistant variable selection algorithm based on discrete PSO to select the most suitable external variableas the assistant variable of the soft measuring model; building up a training sample database according to history tank batch data, and performing normalization processing on it; then designing a BPneutral network model, and optimizing weight value and threshold value of the neutral network by means of an improved cuckoo algorithm; training the optimized neutral network, and forecasting the hypha biomass by the optimized model. By adopting the improved cuckoo algorithm, the BP neutral network is optimized; compared with the standard CS-BP neutral network method, the rate of convergence and local search ability are greatly promoted, the real-time online accurate forecasting of the key variables in the edible mushroom fermenting process is realized; the soft measuring method is significantto the parameter detection and optimal control of the mushroom fermenting process.
Owner:JIANGSU UNIV

Power-factor correction method and circuit and switching power supply

ActiveCN103516191AAvoid situations where calibration accuracy decreasesReduce collectionEfficient power electronics conversionDc-dc conversionLoop controlVoltage loop
The invention discloses a power-factor correction method. The power-factor correction method comprises the steps that input currents iin and output voltages Vdc are sampled; input voltages Vin are estimated according to the input currents iin and the output voltages Vdc; electric current loop control is carried out, and the waveform phase of the input currents iin is made to follow the waveform phase of the input voltages Vin; voltage loop control is carried out, the reference quantity of the input currents iin is provided for the electric current loop control, and the output voltages Vdc are made to be stable. According to the power-factor correction method, the input currents and the output voltages of a switching power supply are used as the external variable measured values of a state observer, the input voltages of the switching power supply are obtained by adopting the state observer in an estimation mode, the input voltages do not need to be collected, the collecting quantity is reduced, and errors are avoided. In addition, the input voltages are obtained through the state observer in an estimation mode, and the situation that when the input voltages are collected, power-factor correction accuracy is lowered due to system errors generated by a sampling circuit is avoided.
Owner:GREE ELECTRIC APPLIANCES INC

Static analysis method and system based on symbolic function abstracts

The invention discloses a static analysis method based on symbolic function abstracts. The method includes the steps that an RSTVL model is utilized to describe the storage state of variables of nodes of a control flow diagram of a current function; when the current node of the function is determined as a non-final node and functions which can be called exist in the current node, the function abstracts of the functions called by the current function are instantiated, and variables affected by call of the functions and in the current function are updated; when the current node of the function is determined as a final node and the current function has a function return value, a symbol expression of the function return value is acquired, the variables of which the storage state changes are found out, and symbol expressions of the variables of which the storage state changes are acquired; the symbol expressions of the function return value and the symbol expressions of external variables in the variables of which the storage state changes are added to the function abstracts of the current function. The invention further discloses a static analysis system based on the symbolic function abstracts. By the adoption of the technical scheme, static analysis accuracy and efficiency can be effectively improved.
Owner:BEIJING UNIV OF POSTS & TELECOMM
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