239 results about "Unit load" patented technology

Methods and apparatus for tracking the location of one or more unit loads in a coordinate space in a facility, comprising an integrated system that identifies a load by communicating with a host computer, determines the position of the load in the coordinate space, and stores the position and load identity in a Load Map. A mobile subsystem on each conveying vehicle identifies the location and orientation of that vehicle using a position/orientation sensor, confirms acquisition of the load, and communicates the information to a fixed-base subsystem when the load is deposited on an automated conveying device. A conveyor controller tracks the load as it is conveyed on the automated conveying device and identifies the load to a subsequent conveying vehicle based upon its position on the conveying device. Loads that are not initially identified are assigned a pseudo-identification for tracking until they can be positively identified.

The invention provides an advanced control method for a coordination system of a boiler and a steam turbine of a thermal power unit, which applies advanced dynamic feedforward technology to the feedforward design of a main control system of the boiler so as to effectively accelerate governing speed of a boiler load command in a load varying process of the unit. In the load varying process of the unit, oscillation tendency of the main control system of the boiler can be inhibited through reducing integral action of a regulator. In the main control system of the steam turbine, a unit load command N0 is subjected to inertia LAG time-delay, and protection design is carried out on main steam pressure. The method ensures that the boiler and the steam turbine can operate under a more coordinated mode and ensures that the thermal power unit has faster ascending and descending speed of load and more stable variation of the main steam pressure, wherein the ascending and descending speed of the load of the unit reaches 3.0 percent Pe/min in actual application, the main steam pressure is stable without overshoot, and the pressure deviation is in an acceptable range.

A data distribution system, method and program for generating a distribution package for distribution data to a client. An environment of a requesting client requesting distribution data is detected. A determination is made of an access control execution program for implementing an access control mechanism and a loading unit on the requesting client. The access control execution program is adapted to the detected environment of the requesting client and control access to a resource from a process in the client. The loading unit loads the distribution data to a protected storage area of the client. A determination is made of a security policy specified for the distribution data. A distribution package is generated including the distribution data, the security policy, the loading unit, and the access control execution program adapted to the environment of the requesting client; and transmitting the generated distribution package to the requesting client.

The invention discloses a unit coordinated control method and a system based on a boiler dynamic differential feedforward instruction. Main parameters for unit operation are adopted as the reference quantity for boiler dynamic differential feedforward instruction calculation, and thus, the load response ability of a thermal power generating unit and the adjustment quality are improved. The method and the system have the beneficial effects that as for boiler dynamic differential feedforward BIR calculation, a deflection quantity between a power grid load set value and a unit load instruction is introduced as a correction quantity for an adjustment amplitude, a boiler combustion rate response speed is improved; and through introducing the operation pressure deflection of the unit and the weather working condition, the BIR quantity needed during a boiler variable load process is corrected, and the adjustment precision during the variable load process is improved.

The invention relates to the measurement technical field, in particular disclosing an availability control system and a method on measurement technical institution certificate/report. The system comprises an institution information base, a personal intelligence base, a certificate/report number rule base, a verification regulation/calibration criterion base, a measurement instrument name base, a verification/criterion\test equipment base, a verification/criterion/test site base, an authorized verification/criterion/test item base, a type determining unit and a loading unit. Correspondence of all elements are unified in the authorized verification/criterion/test item base; the type determining unit determines the type of the verification/criterion/test certificate/report general template; the loading unit loads the certificate/report template of the type and screens and determines the value range of all element variables in the loaded certificate/report template, and the value range is loaded to a user for selection.

The invention provides a distributed power generation planning method and belongs to the technical field of power energy saving. The method is mainly used for coordinating relation between power grid planning and distributed power supply configuration. The method includes first introducing a node sensitivity coefficient array and a unit loading increment cost array, building a power grid node/ branch margin capacity cost model and a calculation method thereof, quantizing effect of the distributed power supply grid tying on the power grid node/ branch margin capacity cost and finally conducting benefit calculation and evaluation on two distributed power supply property right models owned by a user and a power grid company based on a quantization model of effect of the distributed power supply grid tying to the power grid node/ branch limit capacity cost.

The invention relates to a CAE-based simulation detection method and simulation test system for fatigue life of an automobile frame, and the method comprises the steps: extracting a virtual frame loadspectrum in a virtual whole automobile driving process, carrying out the inertia release analysis of a virtual frame under a unit load, and obtaining a virtual frame material fatigue characteristic curve; inputting the virtual vehicle frame load spectrum, the inertia release analysis result under the unit load of the virtual vehicle frame and the virtual vehicle frame material fatigue characteristic curve into a virtual vehicle frame fatigue calculation model, and calculating the fatigue life of the virtual vehicle frame; judging whether the fatigue life of the virtual frame is within the fatigue life threshold range of the virtual frame or not, and if yes, storing actual parameters of the frame. The CAE is adopted for simulation analysis, the fatigue life condition of the frame is obtained, defects existing in the design can be quickly found, and technical support is provided for structural design and improvement.

The invention discloses an air conditioner internal unit/external unit test method and system. The method comprises the following steps: a tool control panel receives a control command issued by an upper computer and controls the operation state of a wire controller/ a lamp panel according to the control command, and furthermore, controls the operation state of air conditioner internal unit/external unit load; the tool control panel reads the operation state of the air conditioner internal unit/external unit load detected by a tool detection panel and feeds back the operation state of the air conditioner internal unit/external unit load to the upper computer; a machine vision system captures and stores the operation state of the wire controller/ the lamp panel; and the upper computer obtains the operation state of an air conditioner internal unit/external unit according to the operation state of the air conditioner internal unit/external unit load and the operation state of the wire controller/ the lamp panel, makes a comparison between an expected operation state of the air conditioner internal unit/external unit and the operation state of the air conditioner internal unit/external unit and generating a test report. Through controlling the operation state of the air conditioner internal unit/external unit load automatically, test efficiency is effectively improved, and test period is reduced.

The invention relates to an implementation method for scheduling a monthly power generation plan in a manner of rolling at equal progress. The implementation method comprises the following steps of: A, determining a power generation plan model, compiling target and constraint conditions; B, calculating the average adjustment rate of plan unit yearly plan electric quantity; C, judging whether the plan unit yearly plan electric quantity which is adjusted in equal proportion exceeds the yearly highest power generation capacity or not; D, adjusting the plan unit yearly plan electric quantity in equal proportion; E, preassigning the yearly plan remaining electric quantity; and F, adjusting the monthly preassigning results. According to the method, reasonable monthly power generation plan values of subsequent months can be acquired within a constraint range of unit load rates, and the deviation of the percentage complete of the yearly plan of power plants is effectively controlled.

The invention belongs to the technical field of multi-split air conditioner control, and discloses a compressor unit control method and device. The method comprises the following steps of acquiring indoor unit load demand, and determining outdoor unit energy consumption demand according to the indoor unit load demand; determining the operation number of compressors according to the indoor unit load demand and the outdoor unit energy consumption demand; acquiring alternate priority corresponding to a compressor unit in a multi-split air conditioner system; performing alternate priority adjustment on the rotation priority according to the outdoor unit energy consumption demand to obtain first target alternate priority; and performing alternate priority adjustment on the compressor unit according to the indoor unit load demand, the first target alternate priority and the operation number of the compressors. By means of the mode, the operation duration of the compressor unit is balanced, and therefore the reliability of a whole machine is improved.

The invention relates to a method for calculating and evaluating the stress of standard parts, in particular to the method for calculating and evaluating the stress of massive standard parts under different loads, which is characterized in that: load data files are independently made, which is favorable for conveniently expanding load data and reducing error ratio; actual stress levels of each part can be obtained through simple algebraic superposition only by performing unit load stress analysis for certain times the same as the number of load directions no matter how many parts with the same structure, which greatly saves a computer memory space required by result files at the same time of speeding up the stress analysis; and a maximum stress allowable value of the standard parts is written into a calculation command stream file, so results of the parts can be evaluated at the same time of being obtained, and subsequent evaluation workload is further reduced.

The invention discloses a displacement calculation method of wind turbine blades based on a three-dimensional shell finite element model. In the calculation method, a three-dimensional shell finite element model for blades is equivalent to beam models. The node of each beam model overlaps the reference center of a cross section. Blade roots are completely constrained. Six independent unit loads are applied to a free end of the shell finite element model. Based on the node displacement calculation method of a flexibility matrix of the beam model, flexibility matrixes of all beam models are solved for once. Without loads unknown, displacement of all pneumatic centers can be directly calculated so that calculation efficiency of blade elastic deformation during analyses and calculations of features including elasto-aerodynamic coupling for blades and bending-torsional coupling.

The invention discloses a multifunctional configurable single particle radiation resistance system and method. A key parameter loading module of a monitoring unit loads a monitoring configuration parameter stored in an external memory to the monitoring unit; the monitoring configuration parameter is put in a storage file generated in a set format; a central control module of the monitoring unit executes program loading after a target FPGA is powered on; the central control module monitors a loading completion confirmation signal of the target FPGA and waits for program loading success of the target FPGA; and when the loading completion confirmation signal of the target FPGA is received, the program loading completion of the target FPGA is confirmed. Different working interfaces can be selected for performing radiation-resistant reinforcement design on any quantity of FPGAs with backward reading functions only by modifying the monitoring configuration parameter in the external memory, so that multifunctional configurable reinforcement design of multiple SRAM type FPGAs can be realized.

The invention relates to a method for simulating and modeling a controlled object in a distributed control system (DCS) of a thermal power generating unit. The method for simulating and modeling a main analog controlled object comprises the steps of: a, calculating water feed pressure, feed water flow and separator pressure parameters in a simplification manner according to the rotation speed of a water feed pump; b, simplifying a water level of a steam drum/separator into the integral of a flow difference between an inlet working medium and an outlet working medium; c, determining steam flow by calculating the dryness of the working media; d, calculating temperature based on the pressure and enthalpy by using an integrating function of a PID (Proportion Integration Differentiation) module, and then simulating to calculate main steam temperature; e, simulating to calculate smoke quantity and the suction capacity of a draught fan, and further simplifying and simulating the negative pressure of a discharge hearth; f, simulating to calculate the combustion capacity of a boiler according to the rotation speed of a coal feeder; and g, simulating to calculate a unit load according to the combustion capacity or the main steam flow. According to the invention, by means of a simulation method for establishing a controlled object simplified model inside a DCS system by adopting a DCS configuration tool, the control over a closed loop is realized.

The invention discloses a temperature field and thermal circuit direct coupling-based motor heat analysis method. Part of parts of a motor are modeled by adopting a finite element method, and other parts are modeled by adopting a thermal circuit method. A temperature field is related to a thermal circuit through an equivalent temperature boundary and an equivalent convection boundary. During solving, a thermal circuit part is regarded to consist of one-dimensional finite element units, and two connected boundaries are regarded as two boundary units. Finally a unit stiffness matrix, a unit load matrix, a unit mass matrix and the like corresponding to the one-dimensional finite element units and the boundary units are superposed to a global stiffness matrix, a global load matrix and a global mass matrix, and the temperature field and the temperature distribution in the thermal circuit are worked out at the same time through a method for solving a global linear equation set. According to the method, the advantages of the finite element method and the thermal circuit method in the motor heat analysis are combined, so that sufficient calculation precision can be ensured and the calculation speed can be remarkably increased.

The invention discloses a machine algorithm-based turbine low-pressure cylinder exhaust enthalpy real-time calculation method. According to the method, steam inlet parameters such as a unit load, mainsteam flow, a main steam pressure, a main steam temperature, and a steam inlet pressure and a steam inlet temperature of a medium-pressure cylinder and the like are selected as input variables; meanwhile, steam exhaust parameters such as a steam exhaust pressure and a steam exhaust temperature of a low-pressure cylinder and the like are selected as input variables; in addition, steam extraction parameters such as steam extraction pressures, steam extraction temperatures and the like of first to eighth stages of a turbine are selected as input variables; 28 parameters in total serve as the input variables; after data preprocessing, principal component analysis is performed to obtain n principal components with an accumulated contribution value greater than 99.95%; and by taking the n principal components as input variables of a BP neural network and taking an exhaust enthalpy of the turbine as an output variable, a turbine exhaust enthalpy calculation model based on a principal component analysis and neural network composite model is built; and by training the model, the turbine exhaust enthalpy calculation model is obtained, so that real-time calling in online monitoring is facilitated.

The invention relates to the advanced controlling field of urban central heating systems, in particular to a real-time optimal operation method and system for heating system loads, unit models and units. The real-time optimal operation method for the multi-heating-source heating system loads includes the following steps that S100, the unit model of each heating resource unit is established; S200,an optimal objective function is structured; S300, optimal operation strategies of the heating resource unit loads are obtained through the unit models and the optimal objective function; and S400, based on the optimal operation strategies, real-time optimization is conducted on distribution of the heating resource unit loads, and thus distribution of the heating resource unit loads is optimized in real time.

The invention discloses terminal equipment and a virtual storage unit management method. The terminal equipment comprises a basic storage unit, at least two additional storage units and a processing unit, wherein the basic storage unit is configured to store system data and application data, the additional storage units are configured to store program data and user data, and the processing unit is configured to operate an operation system and to manage the basic storage unit and the additional storage units. When the additional storage units are loaded by the operation system, the processing unit loads the additional storage units through the same mounting point.

The invention discloses a thermal power unit load changing rate correcting method based on a boiler pressure response characteristic and belongs to the technical field of thermal power generation. Themethod is characterized by comprising the steps that firstly, a pressure deviation judgement constant value and a benchmark load changing rate are set; secondly, a pressure deviation value is obtained after a main steam pressure practical value is subtracted from a main steam pressure set value; thirdly, the pressure deviation value is compared with the pressure deviation judgement constant value, and a load changing control instruction is output; and fourthly, the benchmark load changing rate is subjected to load changing rate correction through a pressure deviation function according to thepressure deviation value, and a final load changing rate is output. When a unit changes a load, the unit load changing rate is automatically corrected according to the real-time changing situation ofthe deviation between the main steam pressure set value and the main steam pressure practical value of the unit, the unit and a boiler are controlled in a coordinated mode truly, and therefore, the operating stability of the unit is improved; and the load changing control instruction is output through the deviation between the main steam pressure set value and the main steam pressure practical value, the load changing rate of the unit is locked, and boiler combustion deterioration under special working conditions is prevented.