38results about How to "Ensure accuracy" patented technology

When an engine stop demand is generated and an engine speed is less than or equal to a specified value Ne1, the engine speed is increased once and the engine stop control is started. Even if the engine speed is low at a time of the engine stop demand, the engine stop control period (engine rotational angle) can be ensured. The engine stop position can be controlled to a target stop position with high accuracy.

A surface-mount device (SMD) uses no conventional lead frame and contains a multi-function die module formed from either a single die or two or more dies electrically connected in series, in parallel, or in any combination of series and parallel, to provide such a SMD having one or more different functions including wave filtration, rectification, surge protection, sensing, current limiting, voltage regulation or prevention from voltage backflow, as compared to the prior art, the SMD disclosed is formed from fewer components, is simpler to manufacture and more effectively reduce layout wire length and noise.

A fuel injection valve coupled to a common rail is provided. When fuel injection is carried out, the fuel pressure in the fuel injection valve pulsates. An interval between a pilot injection and a main injection is set so that the main injection is carried out at a zero gradient timing as a timing when the gradient of the fuel pressure in the fuel injection valve after the pilot injection is approximately equal to zero. Owing to a fuel injection control apparatus and a fuel injection control method for an internal combustion engine that perform the above-mentioned control, the fuel injection amount for the subsequent fuel injection following the preceding fuel injection can be reliably held equal to a normal amount.

A gyrocompass has a liquid tank containing a supporting liquid therein, a gyrosphere floating in the liquid tank by the supporting liquid and whose central portion is rotatably supported by a center pin provided in an upper portion of the liquid tank, a gyro rotor incorporated in the gyrosphere, two dish-shaped electrodes disposed at a lower portion of the liquid tank and a lower portion of the gyrosphere, and opposed through the supporting liquid, and a pair of follow-up electrodes disposed in a vicinity of a equator of the liquid tank and opposed to be apart by 180°, and two belt-shaped electrodes disposed in vicinities of equators of the liquid tank and the gyrosphere in a state that the follow-up electrodes are located therebetween, and opposed through the supporting liquid, wherein electricity is fed to the gyro rotor through the dish-shaped electrodes and the belt-shaped electrodes.

The present invention provides a method and machine for producing a slotted wound core (50). The machine includes a punch arrangement (16) arranged to punch apertures in a length of material (12a), a mandrel (22) for receiving the punched material, a control means and a mandrel indexing means. The positioning of the punch arrangement (16) and the mandrel (22) is fixed and the mandrel (22) is arranged to be rotated by the mandrel indexing means after each operation of the punch arrangement so that a roll of punched material is formed on the mandrel (22). The mandrel (22) is rotated by an amount (&ggr;) determined by the control means. The control means determines the indexed amount so that selected apertures punched in the length of material align with one another when the material (12a) is rolled onto the mandrel (22) so that the aligned apertures form respective slots (52) of a desired configuration in the core (50).

In a multi-layer substrate module receiving from an external earth node supply of a reference potential for grounding, a plurality of ground lines are provided respectively corresponding to a plurality of internal circuits. Moreover, a common node for coupling the ground lines is provided in an insulating layer of the multi-layer substrate module. The common node is electrically coupled to the earth node through a ground pin terminal shared by the plurality of internal circuits. Preferably, the common node is provided in the lowest insulating layer of the multi-layer substrate module. Thus, parasitic inductance of the portion through which an earth current flows, that is, the portion common to the plurality of internal circuits, can be suppressed with a small number of ground pin terminals. Accordingly, the inflow phenomenon of the earth current between the plurality of internal circuits is prevented, enabling stable operation.

A system for computer device component audit and inventory management operates in a data network and includes an inventory agent installed on a target computer device for detecting and compiling software and hardware inventory data associated with the target device. An inventory-commence message is deployed through an electronic message handling system, operable on the data network, which requests inventory data from the inventory agent which then compiles the inventory data into executable language statements for incorporation into a host database accessible by a client. Multiple reports may be generated regarding the inventory data. Fees may not be charged for aggregate inventory data. The system provides a client with the ability to remotely request, compile, analyze and report inventory data from target devices that do not necessarily have access to the data network at the time of the inventory request.

The disclosure discloses an automatic simulation test bench and a test method for similar materials of top-coal caving mining. Wherein, the test bench includes a test bench base, a coal seam and strata simulation module, a coal releasing simulation module, a material recovery module, automatic mixing system and a central control system. The disclosure adopts modular construction to meet the requirements of similar material simulation test of top-coal caving mining under different geological conditions and mining technology to the greatest extent. The disclosure adopts automatic control, reduces the working intensity and operation difficulty of the test personnel, and reduces the influence of human factors on the test results. The disclosure adopts a lifting structural design, so as to meet the requirements of similar simulation test of top-coal caving mining under different mining and caving ratios.

An object detection circuit detects an object moving in a periphery of a vehicle by a frame correlation method that uses a plurality of shot images captured at successive times. A state judgment part disables a detection function of the object detection circuit when a steering angle of an own vehicle is not in a prescribed steering angle range. Then, a condition changer changes the prescribed steering angle range corresponding to a condition of the steering angle in accordance with a velocity of the own vehicle. Therefore, the condition changer can relax the condition for enabling the detection function in accordance with the velocity of the own vehicle within a range where detection accuracy is ensured.

A method for monitoring chatter in a machining process includes the following steps: collecting an original signal related to chatter in the machining process; for the original signal, obtaining a signal segment for calculation and analysis by updating data points in a sliding window with a set step-length, where the step-length refers to a number of data points updated every time in the sliding window, and is not greater than the size of the sliding window; calculating fractal dimensions of the signal segments in the sliding window by using a fractal algorithm; and comparing the calculated fractal dimension with an identification threshold to determine whether chatter occurs in the machining process. The measured signal does not need to be preprocessed by using the method, which can greatly improve calculation efficiency and can ensure accuracy of chatter identification.

A vehicle including an internal combustion engine provided with a plurality of cylinders, and a control unit that determines that an abnormality of the internal combustion engine has occurred when an atmospheric pressure has a first value and an operation state represented by at least one of an output shaft revolution speed and a load of the internal combustion engine is within a preset region and determines that an abnormality of the internal combustion engine has occurred when the atmospheric pressure has a second value that is lower than the first value and the operation state is outside the region.

Disclosed is an angular velocity sensor, which comprises a receiving member receiving therein a case containing a vibration element and an IC, and having a hole usable in soldering one end of a terminal strip to a case electrode, whereby, after the soldering operation, the condition of a soldered region in a mounting portion can be checked through the hole. This prevents deficiency in solder amount required for soldering between the case and the receiving member to ensure accuracy in an output signal of the angular velocity sensor.

The invention discloses a multi-layer safe efficient and intelligent stereo garage comprising an intelligent management and control mechanism and an electromagnetic shifting and lifting mechanism. The multi-layer safe efficient and intelligent stereo garage is composed of support bodies, multiple layers of main stalls, reserved stalls and storage stalls. The main stalls are distributed circularly. Eight stalls are evenly distributed on the circumference of each circle. The reserved stall at the bottommost layer is an entrance stall. The reserved stall located on the other side of the main stalls is an exit stall. The remaining stalls are the storage stalls. Conversion of the stalls is achieved through the electromagnetic shifting and lifting mechanisms and rotating mechanisms. The electromagnetic shifting and lifting mechanism comprises a shifting mechanism and a lifting mechanism. Each iron crawler belt of the lifting mechanism is provided with an independent permanent magnet capable of converting a magnetic field, the iron crawler belts are driven by chain wheels, and the chain wheels are supported by small supports on the support bodies. Each small support is provided with a small magnetic field converting track. The crawler belt magnets bear a load, the lifting function is achieved, and the multi-layer safe efficient and intelligent stereo garage is suitable for a scenic sport, an institution and a residential area.

A vehicle control system for an engine-powered vehicle equipped with an engine and an automatic transmission with a clutch. When a given engine stop requirement is met during running of the engine, the system stops the engine automatically. When a given engine restart requirement is met after stop of the engine, the system restarts the engine and enters a clutch control mode to bring the clutch in the automatic transmission into a slippable state in which the clutch is permitted to slip based on the speed of the vehicle, thereby absorbing the acceleration shock which usually occurs upon engagement of the clutch to transmit engine torque to wheels of the vehicle when the engine is restarted, and the speed of the vehicle is relatively low.

In a method and MR scanning apparatus for compensating for gradient delay in the MR scanning sequence, a current gradient amplitude of the MR scanning sequence is determined. Based on the current gradient amplitude and a mapping between gradient delay and gradient amplitude, a current gradient delay corresponding to the current gradient amplitude is determined. The gradient delay in the MR scanning sequence is compensated according to the current gradient delay.

The present invention discloses a switching type control method based on double loop predictive control, which belongs to the field of power electronic converter technology and industrial control. The invention is based on double loop predictive control, and the deadbeat control is adopted by the outer loop control to improve the overall performance of the system (the system refers to the implementation object of the control method, and generally refers the power electronic converter); a switching type control method is adopted by the inner loop control: when the system is in the steady state, the deadbeat control is adopted to ensure the steady state accuracy of the system and to achieve the fixed switching frequency; when the system is in the transient state, it is switched to the finite control set model predictive control to ensure the rapid transition of the system to the steady state. The switching type control method based on double loop predictive control disclosed by the invention has the respective advantages of both kinds of predictive control, and the deadbeat control is adopted by the inner loop to greatly improve the overall performance of the system, which can well meet the working requirements of the power electronic system.

The invention discloses a method and a system for realizing a trusted timestamp service based on a block chain. The invention belongs to the technical field of block chain, super account book Fabric and hash algorithms, aims to solve the technical problem of how to remove trusted timestamp service of a third-party institution, and adopts the technical scheme that (1) the method specifically comprises the following steps of: constructing a super account book Fabric block chain network and registering users; generating a credible timestamp; a user performing hash operation on the electronic databy using a hash algorithm to obtain an abstract, writing related information of the electronic data into the block chain, taking transaction time of corresponding transaction as a time point corresponding to the trusted timestamp, and returning a json structure consisting of a transaction key value, transaction hash and the timestamp as the trusted timestamp; verifying the trusted timestamp; (2)the system comprises a super account book Fabric block chain network construction and user registration unit, a trusted timestamp generation unit and a trusted timestamp verification unit.

Provided is a cushion capable of accurately measuring and displaying a weight of a user sitting on the cushion, and convenient to store, use, and carry. The cushion includes a flexible sheet constituting a bottom part; a flexible seat having an integrated rectangular space part formed on the flexible sheet; a pressure transfer medium injected into the space part of the flexible seat; a pressure transfer medium injected into the space part of the flexible seat; and a scale for sensing pressure applied to the pressure transfer medium by an external pressure applied to the flexible seat and displaying the pressure as a weight, in which the scale includes a load cell, a base member, a control unit, a first display unit and a second display unit.

The invention relates to a double-tension thread clamp. The double-tension thread clamp is characterized in that a rough adjusting thread clamp and a fine adjustment thread clamp are fixedly connectedwith two sides of a mounting seat, the rough adjustment thread clamp is positioned above the fine adjustment thread clamp, the rough adjustment thread clamp and the fine adjustment thread clamp comprise screws, thread clamping assemblies, push plates and connecting blocks, one end of each screw is fixedly connected with the mounting seat, the screws penetrate the thread clamping assemblies, the push plates and the connecting blocks and are movably connected with the thread clamping assemblies, each thread clamping assembly is positioned on a side of the corresponding push plate and is movablyconnected with the push plate, each push plate is positioned on a side of the corresponding connecting block and is movably connected with the connecting block, threaded pipes are fixedly connected into the connecting blocks, a first spring is arranged on the rough adjustment thread clamp, and a second spring is arranged on the fine adjustment thread clamp. The double-tension thread clamp has theadvantages that the double-tension thread clamp is simple and reasonable in structure, the upper thread adjustment accuracy can be effectively improved, and the work efficiency and the product quality can be improved.

The invention discloses a nuclear power plant reactor loading and unloading state simulation system and method. The system comprises a management module, a reactor workshop building module and a fuelworkshop building module; the management module is used for storing the historical storing states, fuel component serial numbers, related component serial numbers and reactor loading and unloading moving plans of a reactor core and a spent fuel storing water pool; the reactor workshop building module is arranged in a reactor workshop building, the fuel workshop building module is arranged in a fuel workshop building, and the reactor workshop building module and the fuel workshop building module are used for reading data in the management module and calculating the initial states of the reactorcore and the spent fuel storing water pool before loading and unloading; in the initial states, the reactor loading and unloading moving plans for loading and unloading are read and executed from themanagement module, and the states of the reactor core and the spent fuel storing water pool in all steps are simulated and displayed according to the loading and unloading progress; and the fuel operation states of the opposite workshop buildings are read and displayed according to information sharing of the reactor workshop building module and the fuel workshop building module. According to thenuclear power plant reactor loading and unloading state simulation system and method, accurate and quick simulation of the reactor loading and unloading process and states is achieved, and the operation efficiency is improved.

The embodiment of the invention discloses a presentation file generation method, device, equipment and a storage medium. The presentation file method comprises the steps of obtaining at least two keywords in a to-be-processed file and feature attribute information of the to-be-processed file, and dividing the to-be-processed file according to the at least two keywords to obtain at least two text fragments; identifying a target demonstration file template matched with the feature attribute information of the to-be-processed file from a demonstration file template library; and importing the at least two text fragments into a target demonstration file template to obtain a target demonstration file. In the scheme, the target presentation file can be generated according to the text informationinput by the user, so that the presentation file generation efficiency is improved. The invention relates to an image recognition technology in artificial intelligence, is suitable for the fields of intelligent government affairs, intelligent education and the like, and facilitates the promotion of the construction of intelligent cities.

An input method and apparatus of a device. The method includes: tracking and recording movement of an eyeball gaze point of a user on a display screen of the device, to obtain a current eyeball gaze point movement trajectory; judging whether the current eyeball gaze point movement trajectory matches with a preset eyeball gaze point movement trajectory in a movement trajectory database; wherein the preset eyeball gaze point movement trajectories indicate paths of the movement of the eyeball gaze point on the display screen according to a preset length range within a preset time period; if matched, determining a corresponding input instruction by using the matched eyeball gaze point movement trajectory, and completing an input operation according to the input instruction; and if not matched, not conducting an input operation. The input method and apparatus of a device can conduct input according to the eyeball movement of the user.

The present invention provides a primer for nucleic acid random fragmentation and a nucleic acid random fragmentation method. The primer consists of a plurality of upstream random primers and downstream random primers. The sequence composition of the upstream random primers is 5′-X-Y-3′, and the sequence composition of the downstream random primers is 5′-P-Y′-X′-close-3′, wherein Y and Y′ are random sequences, X is all or part of sequences of a sequencing platform 5′ end adaptor, X′ is all or part of sequences of a sequencing platform 3′ end adaptor, P is phosphorylation modification, and close is close modification. The primer of the present invention adopts double random anchoring of both the upstream random primers and the downstream random primers, and a DNA sample can be randomly broken.

The present disclosure discloses a method, a related apparatus and storage medium for distributed transaction processing. The method includes: obtaining, by a distributed transaction processing device, a distributed transaction processing request; writing, by the distributed transaction processing device, a commit log corresponding to the distributed transaction processing request to a second object database set in the target database cluster, the commit log comprising a commit indication result; obtaining, by the distributed transaction processing device after the distributed transaction processing device resumes distributed transaction processing, the commit log from the second object database set; and performing, by the distributed transaction processing device when the commit indication result in the commit log instructs to commit the processing operation on the account data in the N accounts, the processing operation on the account data in the N accounts. The present disclosure resolves a technical problem that the accuracy of distributed transaction processing cannot be ensured when established steps of a distributed transaction are interrupted.

The method of this invention determines the timing of an integrated circuit design. At each node, the method determines if the timing of signal propagation at that node is critical. If this timing is critical, method calculates the capacitance at said current node using a highly accurate but computationally intensive model. If this timing is not critical, the method uses a less accurate but less computationally intensive model. The method calculates a signal delay for each mode from the drive strength, calculated capacitance and fan-out. This signal delay is compared to a design goal. This method achieves a better trade-off between timing determination run-time and accuracy. Timing criticality can be determined from one or more of conductor length / area, fan-out, logic depth and timing slack.

A steel, including: between 0.45 and 0.70 wt. % of carbon, between 0.10 and 0.50 wt. % of silicon, between 0.30 and 0.70 wt. % of manganese, between 0.20 and 0.60 wt. % of chromium, less than or equal to 0.025 wt. % of phosphorus, between 0.003 and 0.030 wt. % of sulfur, less than or equal to 0.1 wt. % of molybdenum, less than or equal to 0.2 wt. % of nickel, less than or equal to 0.04 wt. % of aluminum, less than or equal to 0.3 wt. % of copper, less than or equal to 0.001 wt. % of calcium, less than or equal to 0.003 wt. % of titanium, less than or equal to 0.001 wt. % of oxygen, less than or equal to 0.04 wt. % of arsenic, less than or equal to 0.03 wt. % of tin.

The invention relates to the technical field of operation and maintenance of wind turbines, and is also applicable to non-destructive measurement of a depth of a defect of other resin-based composite materials. It is aimed at the problem that the depth of the defect cannot be determined by an intuitive infrared thermal image in the measurement of a depth of a defect of a large wind turbine blade. This method not only ensures accuracy of the measurement, but can also be widely applied. The method comprises the following steps: S1: continuously heating a surface of a wind turbine blade with an irradiation heat source; S2: collecting and storing a real-time heat map sequence of a surface of the blade with an NEC R300 infrared thermal imaging camera; S3: extracting a surface temperature rise curve at a defect location and organizing the results into a temperature rise curve family of the layers in a depth direction at the defect location; S4: extracting a surface temperature rise curve at a non-defect location, and calculating the similarity between the two temperature rise curve families; S5-S7: obtaining a reference depth value of the defect; and S8: determining whether the depth value is in a characteristic interval.

The invention discloses a method and system for realizing a trusted time stamp service based on blockchain, which belongs to the technical fields of blockchain, hyperledger fabric, and hash algorithm. The technical problem to be solved by the invention is how to realize the removal of third-party The technical solution adopted by the organization's trusted time stamp service is as follows: ①The method is as follows: super ledger fabric blockchain network construction and user registration; trusted time stamp generation: users use hash algorithm to perform hash operation on electronic data Obtain the abstract, write the relevant information of the electronic data into the blockchain, and at the same time use the transaction time of the corresponding transaction as the time point corresponding to the trusted timestamp, and then return the json structure composed of the transaction key value, transaction hash and timestamp As a trusted timestamp; trusted timestamp verification. ②The system includes a hyperledger fabric block chain network construction and user registration unit, a trusted timestamp generation unit and a trusted timestamp verification unit.