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101 results about "Early start" patented technology

Automatic planning and cueing system and method

A method for automatically planning is provided, comprising the steps of receiving a plurality of tasks that a user needs to perform, each task having an earliest start time, a latest stop time, a duration for completing the event and a reward value for completing the event, the tasks including a fixed task having the duration being equal to the time period between the earliest start time and the latest stop time and a floating task having a duration that is less than the time period between the earliest start time and the latest stop time, arranging said fixed task into a plan for the user based on the earliest start time, duration and reward of the fixed task, determining an actual start time for the floating task within the time period between the earliest start time and the latest stop time based on the earliest start time and duration of the fixed task, and arranging said floating task into the plan for the user based on the selected actual start time and the reward of the floating task. A system for automatically planning a series of events into a plan is also provided.
Owner:ATTENTION CONTROL SYST

Technique for scheduling execution of jobs for or by network-connected devices

ActiveUS20020198923A1Limitations of prior art device management systems are avoidedAvoid restrictionsResource allocationMemory systemsCascading failureStart time
Methods, systems, computer program products, and methods of doing business by improving the scheduling of execution of jobs for or by network-connected devices, thereby enabling the job execution process to scale more easily, efficiently, and effectively to support large numbers of devices and / or users. Examples of jobs include, but are not limited to, distribution of resources (including software, configuration information, images, and other types of content) to a device, fetching a device's inventory information, backing up a device's contents, and so forth. Jobs are programmatically scheduled based upon a specified time internal, according to a class of the requester. Only if an earliest start time after which the job may be executed for this requester has been reached will the job be executed; otherwise, the job execution is delayed. The disclosed techniques lessen the need for additional servers to handle spikes in processing load, reduce the likelihood of reaching system overload, and reduce the likelihood of cascading failures that may occur when systems are overloaded.
Owner:TWITTER INC

Technique for scheduling execution of jobs for or by network-connected devices

Methods, systems, computer program products, and methods of doing business by improving the scheduling of execution of jobs for or by network-connected devices, thereby enabling the job execution process to scale more easily, efficiently, and effectively to support large numbers of devices and / or users. Examples of jobs include, but are not limited to, distribution of resources (including software, configuration information, images, and other types of content) to a device, fetching a device's inventory information, backing up a device's contents, and so forth. Jobs are programmatically scheduled based upon a specified time internal, according to a class of the requester. Only if an earliest start time after which the job may be executed for this requester has been reached will the job be executed, otherwise, the job execution is delayed. The disclosed techniques lessen the need for additional servers to handle spikes in processing load, reduce the likelihood of reaching system overload, and reduce the likelihood of cascading failures that may occur when systems are overloaded.
Owner:TWITTER INC

Task Allocation Method And Task Allocation Apparatus

A distributed processing system includes plural nodes each provided with a processor and communicably connected to each other. A task information obtaining unit obtains antecedent dependency between tasks. A node information obtaining unit obtains a time constraint imposed on the tasks. A start time computing unit computes an absolute earliest start time at which a task can be started and an absolute latest start time allowed in order to complete the task within the time constraint, by referring to the time constraint. A node selector selects a destination node to which a target task not yet allocated to a node should be allocated, by referring to the absolute earliest start time and the absolute latest start time. A task placement unit causes the task to be executed in the selected node.
Owner:SONY COMPUTER ENTERTAINMENT INC

Hybrid vehicle and method of starting internal combustion engine mounted on hybrid vehicle

The technique of the invention sets a control start revolution speed Nstart to decrease with an increase in driver's power demand P* and with an increase in vehicle speed V (step S130), and motors an engine (steps S150 to S190). When a revolution speed Ne of the engine reaches the setting of the control start revolution speed Nstart, operation control of the engine starts (step S220). Such settings are ascribed to the following reasons. Setting a relatively small value to the control start revolution speed Nstart is preferable to trigger an early start of operation control of the engine and ensure quick output of power from the engine. In order to ensure reduction of vibrations of initial explosion and resulting reduction of potential vibrations arising at the time of starting the engine, on the other hand, setting a relatively large value to the control start revolution speed Nstart is preferable. The driver's sensitivity to the vibrations is lowered with an increase in vehicle speed V.
Owner:TOYOTA JIDOSHA KK

Low emission power plant and method of making same

A low emission power generating apparatus which comprises a modified two-stroke diesel engine component and a modified turbocharger component which has a relatively low aspect ratio. The diesel engine component is a modification of a conventional two-stroke diesel engine design and includes an exhaust valve cam of unique design that has a cam profile which results in a later than-normal exhaust valve opening and an earlier-than-normal valve closing so that the time during which the exhaust valve remains open is shorter than normal, thereby causing a substantially greater volume of residual gases to remain in the combustion chamber following the scavenge stroke. This increase in the volume of the residual exhaust gases within the chamber leads to an increase in compression temperature and effectively increases the compression ratio and consequently the compression pressure. Because of the heat absorption capacity of these residual exhaust gases, the exhaust gases remaining in the chamber following the scavenge stroke tend to absorb combustion heat and thereby effectively reduce the peak combustion temperature. This reduction in peak combustion temperature advantageously results in the lower than normal formation of nitrogen oxide (NOx) and, therefore, allows advancement of the injection timing, while still maintaining the NOx emissions coming from the engine lower than those legislatively mandated. Advantageously, the advance in injection timing, which increases NOx emissions, by definition has the effect of also reducing particulate matter emissions. Thus, by increasing the volume of residual exhaust gases within the cylinder, substantial particulate matter emission reductions can be achieved, while at the same time maintaining NOx emissions well below mandated limits. The modified turbocharger component provides an additional charge of oxygen-rich air into the combustion chamber which effectively increases the compression pressure, which, in turn, leads to an earlier start of combustion because of the combustible mixture reaching its auto-ignition temperature at an earlier point in the cycle. This phenomenon leads to more thorough combustion of the fuel and also generally leads to higher exhaust temperatures. Higher exhaust temperatures, in turn, lead to a greater oxidation rate of the soluble organic fraction thus lowering the level of emission from the engine of undesirable particulate matter.
Owner:CLEAN CAM TECH SYST

Task allocation method and task allocation apparatus

A distributed processing system includes plural nodes each provided with a processor and communicably connected to each other. A task information obtaining unit obtains antecedent dependency between tasks. A node information obtaining unit obtains a time constraint imposed on the tasks. A start time computing unit computes an absolute earliest start time at which a task can be started and an absolute latest start time allowed in order to complete the task within the time constraint, by referring to the time constraint. A node selector selects a destination node to which a target task not yet allocated to a node should be allocated, by referring to the absolute earliest start time and the absolute latest start time. A task placement unit causes the task to be executed in the selected node.
Owner:SONY COMPUTER ENTERTAINMENT INC

Method for starting engine in gear shift period

The invention discloses a system and a method for improving the operation of a hybrid vehicle. In one embodiment, the torque demand of a power train after gear shift is predicted for determining whether an early start of the engine is desired, so that the engine torque can be obtained after gear shift. The method can improve the vehicle torque response.
Owner:FORD GLOBAL TECH LLC

Polycrystalline silicon forming method, TFT (thin film transistor) array substrate manufacturing method and display device

The invention discloses a polycrystalline silicon forming method, a TFT (thin film transistor) array manufacturing method and a display device, which solves the problems in the prior art that the TFT on the edge of a ditch is easy to start in advance and a hump phenomenon is formed. A step-shaped light shielding layer is formed on a position for performing the TFT, the position of the step shape corresponds to the edge of the TFT ditch, the light shielding layer is provided with a buffering layer and a noncrystalline silicon layer, which are respectively in a consistent step shape, the noncrystalline silicon layer is crystallized at a low temperature to form polycrystalline silicon containing unstaturated crystal, so that the crystallization of the polycrystalline silicon on the edge of the ditch loses the effectiveness, the current of the TFT device on the edge of the ditch is reduced, the situation that the TFT on the edge of the ditch is early started can be avoided, and the hump phenomenon can be avoided.
Owner:SHANGHAI TIANMA MICRO ELECTRONICS CO LTD

Wide-area fault recording system and synchronization method

The invention discloses a wide-area fault recording system and a synchronization method. The method includes the steps that fault recording devices are arranged on all geographically-dispersed transformer substations respectively; all the fault recording devices are connected to a communication network, and the different devices in same working groups can be communicated through the network; after self-starting criterions of all the fault recording devices are started, the fault recording devices send starting signals (network starting signals) to the other devices in the same working groups, and absolute time marks of starting moments are carried in the sent signals; delta T time begins to be waited, the earliest starting moments in all the starting signals (the starting signals include the self-starting signals and the network starting signals) in the delta T time are compared and selected, and wave files are started to be stored and recorded according to the preset recording regulation from the moments. The requirement of the synchronization recording method for the real-time performance of the communication network is low, wide-area synchronization recording can be achieved through an existing non-real-time communication network, the investment of special real-time channels is saved, and the large practical value is achieved.
Owner:NR ELECTRIC CO LTD +1

Workflow bidirectional scheduling method based on cloud computing

ActiveCN104834995ALow costMeet the individual needs of flexible schedulingResourcesForward algorithmPersonalization
The invention discloses a workflow bidirectional scheduling method based on cloud computing. The workflow bidirectional scheduling method comprises a step 1 of adopting a backward algorithm to begin distribution and scheduling from tail nodes of multiple task nodes of a workflow under a condition that the workflow can be timely completed at the deadline, so as to obtain a workflow subjected to the backward algorithm; and a step 2 of adopting a forward algorithm according to the earliest start time of the multiple task nodes to begin forward scheduling of each take node from head nodes of the multiple task nodes of the workflow subjected to the backward algorithm under a condition that the dependence relationship of the multiple task nodes is satisfied and the deadline of the workflow is not exceeded. The workflow bidirectional scheduling method based on cloud computing saves the cost of a user and meets customized demands for flexible scheduling of the user.
Owner:上海英拿信息技术有限公司

Low-power rapid-boost FLASH charge pump control circuit

The invention relates to a low-power rapid-boost FLASH charge pump control circuit. The low-power rapid-boost FLASH charge pump control circuit comprises a programming erase control circuit, a voltage regulating circuit, a voltage reducing circuit, a clock generating circuit, a four phase clock circuit, a charge pump and a voltage stabilizing circuit. The voltage reducing circuit is divided into two paths, one path is used for quick start and works when the output voltage of the charge pump is low, the other path is used for the voltage trimming of the charge pump and works when the output voltage of the charge pump approaches a target value, and the voltage reducing circuit reduces the voltage through a reverser biased diode and a forward biased diode in order to reduce power consumption; the clock generating circuit is used for generating a clock required by the work of the charge pump, the frequency of the clock is adjustable, and in the early start stage, the clock runs in a fastest frequency within an adjustable range, and the voltage of the charge pump fast rises; and when the voltage of the charge pump approaches the target value, the clock frequency is trimmed according to the feedback voltage of the charge pump in order o maintain the voltage of the charge pump in a reasonable range. The control circuit reduces the power consumption of a Flash memory and increases the programming erasing speed of the Flash memory.
Owner:BEIJING MXTRONICS CORP +1

Phase insertion type bus signal priority control method

The invention provides a phase insertion type bus signal priority control method. A bus phase is inserted into a phase barrier, so that the buses, which cannot be given priority in releasing through an earlier start and later cutoff policy of a green light, are enabled to pass through road crossings in advance as much as possible. With the bus phase inserted into the phase barrier, no matter a single-ring structure or a multi-ring structure, influence between conflicted phases is maximally reduced, and influence on traffic organization order of the road crossings is reduced, so that the busesare given priority to pass through the road crossings, and operating efficiency of the buses is improved.
Owner:QINGDAO HISENSE TRANS TECH

Method for restoring a plurality of auxiliary inverters of train in normal starting sequence

A method for restoring a plurality of auxiliary inverters of a train in a normal starting sequence belongs to the field of detecting the inverter starting sequence fault of a formatted train which comprises a plurality of inverters. According to the method of the invention, reasons for failed logic bit starting fault of the auxiliary inverters are sufficiently considered, and furthermore a more appropriate resetting condition is designed and determined in a more targeted manner. According to the method, early-period preposing and later-period remedy can be performed on normal auxiliary inverters which are cut and isolated by a TCMS in a starting sequence because of a logical misjudgement; and early starting failure logical bit resetting and later starting failure logical bit resetting are performed, thereby effectively preventing the logical misjudgement, furthermore preventing unnecessary middle-voltage unloading, and reliably ensuring high smoothness in successive starting cycle of the auxiliary inverters. Furthermore the method has functions of preventing train equipment idling and substantially improving safety and reliability in smooth operation of an intermediate-voltage power supply system in the train as well as sitting comfort of passengers.
Owner:CRRC CHANGCHUN RAILWAY VEHICLES CO LTD

Motor vehicle and control method of motor vehicle

InactiveUS20060218896A1Reduces potential shockPrevents potential troubleHybrid vehiclesElectrical controlCombustionMotor vehicle part
In a hybrid vehicle of the invention, in the event of specification that an exhaust treatment catalyst is in a preset adequate state at step S112, combustion control of an engine starts after a decrease of an intake pipe pressure P to a preset reference negative pressure Pref and reduction of an intake air flow into a cylinder of the engine by engine motoring. In the event of specification that the exhaust treatment catalyst is not in the preset adequate state but in an inadequate state at step S112, on the other hand, the combustion control of the engine immediately starts, prior to the decrease of the intake pipe pressure P to the preset reference negative pressure Pref. The hybrid vehicle of the invention allows an early start of the combustion control in a lower catalyst temperature condition that lowers the catalytic conversion power of the exhaust treatment catalyst and in a higher catalyst temperature condition that causes accelerated deterioration of the exhaust treatment catalyst in exposure to the air. The early start of the combustion control effectively reduces the potential shocks on a start of the engine, while preventing the potential troubles, for example, the worsened emission and the accelerated deterioration of the exhaust treatment catalyst, arising in the course of engine motoring due to the inadequate state of the exhaust treatment catalyst.
Owner:TOYOTA JIDOSHA KK

Parallel Processing of Multi-Dimensional Data With Causal Neighborhood Dependencies

A method (which can be computer implemented) for processing a plurality of adjacent rows of data units, using a plurality of parallel processors, given (i) a predetermined processing order, and (ii) a specified inter-row dependency structure, includes the steps of determining starting times for each individual one of the processors, and maintaining synchronization across the processors, while ensuring that the dependency structure is not violated. Not all the starting times are the same, and a sum of absolute differences between (i) starting times of any given processor, and (ii) that one of the processors having an earliest starting time, is minimized.
Owner:IBM CORP

Air conditioner compressor system and its control method

The invention discloses an air-conditioner compressor system and its control method, the method is in the early running, limit the inverter compressor frequency until be upgraded to the set frequency, after a specified time, and then operate on the normal frequency. Also include frequency set to initial frequency to start, and up to the limit set frequency, the frequency will be once again reduced to the initial frequency of the process. the said set frequency is 80% of the largest frequency. Its system, including: the inverter compressor can adjust frequency within the normal frequency; have also set up the uniform compressor which start under the load increase; compressor control parts control inverter compressor frequency up to a certain frequency of operation in the early running. The invention through the early start, raising compressor frequency, thus preventing the the phenomenon that household electrical appliances can not start because in preheated state for a long time, and it can quickly reach the normal functioning state and improve the reliability of the products.
Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD

Modeling approach for shipbuilding enterprise subsection workshop spatial scheduling model based on cellular machine

The invention discloses a modeling approach for a shipbuilding enterprise subsection workshop spatial scheduling model based on a cellular machine. The modeling approach comprises the following steps of: 1) layer model design and cellular status description: carrying out layer division to a spatial scheduling subsection manufacture field by taking the earliest start time of each subsection as a division point on the time dimension, and taking each layer as one cell to represent one two-dimensional field space; 2) setting a time rule under the initial state to a first come first service rule, regularly selecting a rectangular rule on a subsection shape, selecting an edge strategy to serve as the initial rule of a subsection placement strategy, setting a boundary condition as a constant value type, and representing that one feasible solution can be obtained when all subsection decision variables (DV) are evaluated as 0, i.e. the subsection arrangement is successful; 3) evolution rule setting; and 4) obtaining the multi-target function of the subsection workshop spatial scheduling model. The invention provides the modeling approach for the shipbuilding enterprise subsection workshop spatial scheduling model based on the cellular machine, which combines the convenience and the reliability.
Owner:嘉兴笼列电子商务有限公司

Air conditioner control method and device as well as computer readable storage media

The invention discloses an air conditioner control method. The air conditioner control method comprises the following steps that whether a time interval between a current moment and a preset on-duty moment is less than or equal to a maximum early start time is determined; if the time interval is less than or equal to the maximum early start time, a preliminary demand load corresponding to a central air conditioner is acquired and a startup combined load corresponding to the central air conditioner is acquired; and the starting time of a to-be-started main machine is determined based on the startup combined load and the preliminary demand load; the invention further discloses an air conditioner control device and a computer readable storage media. According to the air conditioner control method and device as well as the computer readable storage media, the starting moment of the main machine in the central air conditioner can be determined according to the preliminary demand load, and then the central air conditioner can be started in advance advantageously in later stage according to the starting moment, so that the comfort degree of a room corresponding to the on-duty moment is guaranteed while energy consumption is reduced, and the pre-cooling or preheating accuracy of the central air conditioner is improved.
Owner:SHANGHAI MEICON INTELLIGENT CONSTR CO LTD +1

Virtual cloud fault-tolerant resource supply method

The invention discloses a virtual cloud fault-tolerant resource supply method. The method is characterized by comprising the following steps of: acquiring arrived dependent task group information and virtual cloud physical host information; building a primary version and a backup version of each task in a dependent task group by using a primary-backup (PB) model; allocating earliest start time and latest finish time to each version of each task in the dependent task group; dividing a plurality of virtual machines on each activated physical host, and acquiring information of each virtual machine on each activated physical host; loading each version of each task in the dependent task group onto each virtual machine on each activated physical at a specified time slot; running each loaded version of each task in the dependent task group according to the specified time, and adjusting the resource utilization rate of a system by using a resource extension mechanism and a resource contraction mechanism; and finishing all tasks in the dependent task group and returning a task result.
Owner:NAT UNIV OF DEFENSE TECH

Extensible scheduling of tasks in time-triggered distributed embedded systems

A scheduling algorithm for scheduling processor tasks and message transmissions in distributed real-time time-triggered embedded system. The algorithm identifies the earliest starting transmission time and the latest ending transmission time for each message to be transmitted on a bus to define message transmission time-windows. The algorithm then identifies a task execution time-window for each task to be performed in each processor in terms of the message transmission time-windows. The algorithm then optimizes the message transmission time-window by minimizing a peak usage request and an average usage request for each processor. The optimized transmission time-windows allows each processor to be separately scheduled.
Owner:GM GLOBAL TECH OPERATIONS LLC

Artificial propagation method for veraspei moseri

The present invention relates to an artificial propagation method for veraspei moseri. Its characteristic is to process microscopy examination by artificial taking semen method during October to November, if male fish has been developmental maturation and the quality of semen are good, taking the developmental maturation semen to preserve into liquid nitrogen; each December starting temperature control, to next March early starting rising temperature to 8 DEG C with the rate of 1 DEG every ten days; selecting good gonadal developmental veraspei moseri to process artificial insemination by extruding eggs dried method, mixing the eggs together with extruding semen and freezing semen, injecting sea water to fertilize, the fertilized eggs are put into net cage of hatching tank or hatching pond to manage. The hatching rate is 64 percent to 75 percent generally.
Owner:莱州明波水产有限公司

Reducing agent supply apparatus, method for controlling the same, and exhaust gas purification apparatus

[Problem] To provide a reducing agent supply apparatus that can quickly melt urea aqueous solution solidified in a reducing agent injection valve to allow early start of the injection control of urea aqueous solution, a method for controlling the reducing agent supply apparatus, and an exhaust gas purification apparatus.[Means for Resolution] A reducing agent supply apparatus, including: a storage tank for storing liquid reducing agent; a pump for pumping the reducing agent; a reducing agent injection valve for injecting the reducing agent pumped by the pump in an exhaust pipe of an internal combustion engine; and a reducing agent passage connecting the pump to the reducing agent injection valve, wherein, when the internal combustion engine stops, a purge process of collecting the reducing agent in the reducing agent passage into the storage tank is performed, and wherein, on part of the reducing agent passage, a siphon function portion is provided for, even when, at the start of the internal combustion engine, the reducing agent injection valve is in injection failure due to solidification of the reducing agent in the reducing agent injection valve, causing some of the reducing agent to reach the reducing agent injection valve after the start of the pump to cause the solidified reducing agent to melt.
Owner:BOSCH CORP

Sub deadline acquisition optimization method based on reverse workflow scheduling

The invention discloses a sub deadline acquisition optimization method based on reverse workflow scheduling, which belongs to the field of grid or cloud computing. When a workflow with a deadline constraint is scheduled on a group of fixed resources, a task sub deadline is an important parameter, the sub deadline acquired in the present method sometimes can not ensure completion of remaining tasks, and the new method provided by the invention is used for acquiring a reasonable and usable sub deadline. In view of workflow scheduling, according to the provided RHEFT method, through a workflow reverse thinking, reverse weight solution and ranking are firstly carried out on tasks; one-by-one traverse resources of the tasks are extracted sequentially to acquire the earliest start time and the finish time of a reverse task; and the sub deadline and the latest start time are finally solved correspondingly. The process not only considers the lengths of remaining key paths but also considers influences of DAG parallelism, and thus, after resource mapping of each task under the sub deadline constraint, the rest tasks can still be ensured to have enough scheduling time. Through influences on the sub deadline by DAG parallelism changes, the sub deadline acquired by the method of the invention is verified to be more reasonable and effective.
Owner:BEIJING UNIV OF TECH

Offline three-joint unit establishing device

The invention discloses an offline three-joint unit establishing device. The offline three-joint unit establishing device is characterized in that a three-joint unit frame is arranged on a side of a base of a drilling rig, a manipulator is mounted on the outer side surface of a base of the three-joint unit frame, a hydraulic rack pipe frame is arranged along a longitudinal side or two longitudinal sides of the manipulator, a hoisting tackle, a hydraulic winch and hydraulic tongs are mounted on the three-joint unit frame, and an automatic derrick monkey is arranged on the lower end surface of a racking platform of a derrick. Compared with conventional drilling rigs, the offline three-joint unit establishing device has the advantages that the additional offline three-joint unit establishing device independently has three-joint unit establishing functions under the working conditions that normal well drilling is unaffected, accordingly, the well drilling efficiency can be improved, the well drilling cost can be saved, and oil and gas wells can be early started up in an acceleration manner.
Owner:BAOJI PETROLEUM MASCH CO LTD

Reducing agent supply apparatus, method for controlling the same, and exhaust gas purification apparatus

[Problem] To provide a reducing agent supply apparatus that can quickly melt urea aqueous solution solidified in a reducing agent injection valve to allow early start of the injection control of urea aqueous solution, a method for controlling the reducing agent supply apparatus, and an exhaust gas purification apparatus.[Means for Resolution] reducing agent supply apparatus, including: a storage tank for storing liquid reducing agent; a pump for pumping the reducing agent; a reducing agent injection valve for injecting the reducing agent pumped by the pump in an exhaust pipe of an internal combustion engine; and a reducing agent passage connecting the pump to the reducing agent injection valve, wherein, when the internal combustion engine stops, a purge process of collecting the reducing agent in the reducing agent passage into the storage tank is performed, and wherein, on part of the reducing agent passage, a siphon function portion is provided for, even when, at the start of the internal combustion engine, the reducing agent injection valve is in injection failure due to solidification of the reducing agent in the reducing agent injection valve, causing some of the reducing agent to reach the reducing agent injection valve after the start of the pump to cause the solidified reducing agent to melt.
Owner:BOSCH CORP

Interstation green wave control method of high-density intersections of arterial buses

The invention discloses an interstation green wave control method of high-density intersections of arterial buses. The method solves the problem that bus vehicles need to repeatedly stop for waiting red lamps when the gaps of the intersections in an urban trunk road are close is solved through the cooperative control of bus green waves among bus stations. The method comprises the following steps of determining the signal lamp group division and marking the number, presetting bus two-way green waves in a signal lamp group, judging passing request of bus vehicles, dividing bus green wave motorcades, and determining the bus vehicle speed induction and the early starting duration of the signal lamp group. The method has the advantages that the design is simple and convenient, the calculation is easy, after the bus vehicles are provided with interstation green wave control, the operation speed is greatly accelerated, the bus stop delay is reduced, and meanwhile, the pollutant discharging and the energy consumption are also greatly reduced.
Owner:SOUTHEAST UNIV

Active yaw control method for wind generating set and controller

The invention discloses an active yaw control method for a wind generating set and a controller. The method is used for the center controller and comprises the steps that after it is detected that starting yaw of a first wind power generator exists in a wind power field, historical yaw data of the wind power yield are inquired under the situation that the first wind power generator serves as the wind power generator in earliest starting yaw under current wind situation data; and the passive yaw time difference value, relative to the first wind power generator, of each wind power generator is calculated according to the historical yaw data, and active yaw control instructions are sent to each wind power generator according to the passive yaw time difference value. According to the method, the wind situation does not need to be predicted, the distance between the wind power generators does not need to be detected, so that additional arrangement of additional sensor equipment is not needed, and the operating cost of the wind power field can be greatly saved.
Owner:BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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