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118results about How to "Reliable evaluation" patented technology

Device for controlling traveling of vehicle

After a vehicle has entered a curve, a deviation (Sch) between a target turning state quantity Td and an actual turning state quantity Ta is computed. In a stage in which Sch does not reach a predetermined value after the vehicle has entered the curve, the possibility of the vehicle traveling in the curve is judged to be low, and the reliability of the curve information Rc, Pc is judged to be low. In this case, a determination for prohibiting execution of control (So=0) is made. In a stage after Sch has reached the predetermined value, the possibility of the vehicle traveling in the curve is judged to be high, and the reliability of the curve information Rc, Pc is judged to be high. In this case, a determination for permitting execution of the control (So=1) is made. Deceleration control is started and executed only when a control start condition is satisfied, and the determination for permission is made. Accordingly, even when the control start condition is satisfied, the deceleration control is not started, if the prohibition determination is made. Thus, the reliability of the curve information based on map information on the vehicle is evaluated reliably, and the deceleration control within the curve can be prevented from being unnecessarily executed on the basis of curve information whose reliability is low.
Owner:ADVICS CO LTD +1

Comprehensive evaluation method for wireless sensor network performance

InactiveCN101867960AAvoid the problem of converging to local minimaIncrease training speedNetwork topologiesHigh level techniquesLine sensorCurse of dimensionality
The invention discloses a comprehensive evaluation method for wireless sensor network performance, relates to a least squares support vector regression (LSSVR)-based comprehensive evaluation method for wireless sensor network performance to comprehensively and reasonably evaluate running performance of small and medium-scale wireless sensor networks, and belongs to the technical field of wirelesssensors and network communication. The method is characterized by comprising the following four steps of: determining a network running performance index, determining an independent network running factor value by adopting a factor analysis method, establishing an LSSVR-based network performance comprehensive evaluation model, and performing LSSVR-based network performance comprehensive evaluation with low power consumption. The method solves the traditional problems of 'dimensionality curse' and 'over-learning' by skillfully using a kernel function, is quite suitable for the comprehensive evaluation of the small and medium-scale wireless sensor network performance with a plurality of indexes, assists an administrator in timely and accurately grasping the running condition and tendency ofthe WSN, and provides basis for network running evaluation and optimization.
Owner:JIANGSU UNIV

Test device and test method of simulating well concentration cement slurry displacement efficiency

The invention provides a test device of simulating well concentration cement slurry displacement efficiency. The test device of simulating well concentration cement slurry displacement efficiency comprises a shaft system, a device rack system, a slurry mixing system and a circulation displacement system, and the device rack system, the slurry mixing system and the circulation displacement system mate with the shaft system. The shaft system comprises a shaft and a sleeve which is sleeved in the shaft. The bottom end of the shaft is closed, and the top end of the shaft is an outlet which is connected with the circulation displacement system in a mobile mode. A gap which is arranged between the bottom end of the sleeve and the bottom end of the shaft forms a circulation passage, and the top end of the sleeve is an inlet which is connected with the circulation displacement system. The invention further provides a method of using the device of simulating well concentration cement slurry displacement efficiency to conduct a well concentration cement slurry displacement efficiency simulation experiment. The test device and the test method of simulating well concentration cement slurry displacement efficiency can simulate displacement action of cement slurry in different flow states, detect the displacement efficiency of the cement slurry under conditions of a plurality of well deviation angles, shafts with different sizes and different degree of eccentricity in real-time and can conveniently conduct a multi-angle omnibearing experiment.
Owner:CHINA PETROLEUM & CHEM CORP +1

On-line evaluation system for thermal performance of modular heat exchanger

The invention discloses an on-line evaluation system for thermal performance of a modular heat exchanger. The on-line evaluation system comprises an operation module, a heat exchanger module and a control module, wherein the heat exchanger module comprises a heat exchanger to be measured and temperature pressure test modules; a shell side inlet, a shell side outlet, a tube pass inlet and a tube pass outlet of the heat exchanger to be measured are respectively connected with a shell side inlet operation module, a shell side outlet operation module, a tube pass inlet operation module and a tube pass outlet operation module of the operation module through pipelines; a signal output end of each temperature pressure test module is connected with the control module; the control module is connected with the shell side inlet operation module, the shell side outlet operation module, the tube pass inlet operation module and the tube pass outlet operation module of the operation module through the pipelines. The on-line evaluation system for thermal performance of the modular heat exchanger has the advantages that the structure is simple, the implementation, transportation and operation are convenient, and is suitable for on-line evaluation system for thermal performance of various heat exchangers in various working conditions and operating environment.
Owner:CHINA ELEVENTH CHEM CONSTR

Heavy oil-based quantitative identification chart interpretation method with gas logging

The invention discloses a heavy oil-based quantitative identification chart interpretation method with gas logging. An oil-water layer is quantitatively identified by comprehensively applying gas logging parameters, the concept that the oil-water layer is identified by use of a concentric circle chart of parameters of a methane-ethane logarithmic ratio and a light-heavy hydrocarbon logarithmic ratio is provided for the first time. The method is characterized by comprising the steps of: a step of parameter acquisition, selecting various parameters including a heavy hydrocarbon component in gas logging; a step of parameter preprocessing, carrying out parameter evaluation by use of the ratio of the sum of hydrocarbon components to total hydrocarbon, and excluding an oil layer with the thickness of less than 1m in consideration of the limitation of the gas logging technology; a step of parameter calculation, calculating two derivative parameters of the methane-ethane logarithmic ratio and the light-heavy hydrocarbon logarithmic ratio; and a step of establishment of an oil-layer quantitative identification chart, respectively drawing a graphic bar by use of gas logging hydrocarbon component derivative parameters of the methane-ethane logarithmic ratio and the light-heavy hydrocarbon logarithmic ratio according to a drilled measured result. According to the method, the oil-water layer in a reservoir stratum is qualitatively and semi-quantitatively identified by use of a comprehensive logging technology, the first-hand logging information can be fully discovered, and the oil-water layer can be evaluated rapidly and reliably.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Science and technology project investment and financing evaluation method

The invention discloses a science and technology project investment and financing evaluation method which comprises a screening index method and an evaluation index method, wherein the screening index method comprises evaluating from five factors, including the policy factor, the product quality factor, the intellectual property factor, the environment influence factor and the industry permission factor; the evaluation index method comprises an evaluation index system which takes the economic benefits as the main investment project and an evaluation index system which takes the social benefits as the main investment project; the evaluation index system and the evaluation index system further comprise risk assessment subsystems and earning assessment subsystems; the risk assessment subsystems and the earning assessment subsystems evaluate science projects based on the demand factor, the technique factor, the capital factor, the design factor, the condition factor, the financial benefits, the economic benefits and the social benefits respectively. According to the characteristics of science project techniques, the science and technology project investment and financing evaluation method evaluates science projects in multiple dimensions and has the advantages of scientificity and relatively comprehensive and reliable evaluation result.
Owner:CHONGQING ACADEMY OF SCI & TECH

Water quality fluctuating range prediction method based on combination of deep learning algorithm and mixed integer linear programming

ActiveCN107292383AAvoid problems that are prone to falling into local optimal solutionsReliable evaluationForecastingNeural architecturesModel architectureData prediction
The invention discloses a water quality fluctuating range prediction method based on a combination of a deep learning algorithm and mixed integer linear programming, and belongs to the fields of water environmental protection and monitoring study. The method comprises the steps of firstly, introducing an LSTM (Long Short Term Memory) model architecture suitable for time series data prediction in the deep learning algorithm into modeling of water quality time series point prediction; and secondly, considering that the LSTM model has strong time series prediction performance but has common problems of deterministic prediction methods, namely cannot be used for estimating the indeterminacy of prediction, constructing a general range prediction model based on mixed integer linear programming according to the deviation of validation set sample LSTM point prediction and real values and a confidence parameter, thus giving a water quality fluctuating range prediction method under certain confidence. The method can provide a new solution for water quality prediction, and then provides reliable evaluation and early warning basis for water quality early warning.
Owner:郑保宁 +1

Method for determining gas content of coal bed gas reservoir

The invention discloses a method for determining the gas content of a coalbed methane reservoir. First, a gas content calculation model is established according to the response characteristics of the coal core gas content, coal core component ash, density data and logging data measured by experiments, and the original Gas content: Then, considering the impact of structure and hydrodynamic action on gas content, measured formation water salinity measurement data, and established formation curvature calculation formula; using the measured formation water salinity measurement data and the established formation curvature calculation formula to The gas content is corrected to evaluate the current gas content of the coal reservoir. The present invention comprehensively considers the influence of structural strength and hydrodynamic strength in the coal reservoir to obtain the gas content of the coal seam, and can reliably obtain the original gas content of the reservoir based on the experimental component data of the gas content of the coal core, and according to the formation curvature and formation water The salinity data characterizes the impact of structure and hydrodynamics on the gas content of coal reservoirs, evaluates the current gas content, and provides reliable technical support for the current exploration and development evaluation of coalbed methane in my country.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Wind tunnel test balance assessment method based on strain signal energy

A wind tunnel test balance assessment method based on strain signal energy mainly includes the steps that a model three-dimensional strain gauge, a framework three-dimensional strain gauge and a balance three-dimensional strain gauge are installed on the inner wall of the top end of an aircraft model, a model framework and a balance respectively; Fourier transformation is carried out on strain signals measured out by the three strain gauges in different directions, then a frequency spectrum signal is obtained, energy normalization characteristic values of six frequency bands within 0-300 Hz are calculated out, the difference value between the energy normalization characteristic values of the strain signals in the same direction of the model and the framework is calculated out, and the difference value between the energy normalization characteristic values of the strain signals in the same direction of the model and the balance is calculated out; when the two difference values between the energy normalization characteristic values in the different directions are within the specialized range, an assessment result determines that test data of the balance are credible, and when the two difference values are not within the specialized range, the assessment result determines that the test data of the balance are not credible. Consequently, model mechanical data measured out through the balance are accurate and reliable in a wind tunnel test, and more accurate and reliable test data are provided for aerospace aircrafts.
Owner:SOUTHWEST JIAOTONG UNIV

Evaluation method of integrated energy system

The invention discloses an evaluation method of an integrated energy system. The method comprises the following steps: establishing an integrated evaluation index system; calculating the subjective weight of the index of each level relative to the index of the previous level; calculating the objective weight of the index of each level relative to the index of the previous level; calculating to obtain a comprehensive weight; and evaluating the integrated energy system. According to the invention, based on four criteria of economy, energy efficiency, environmental protection and reliability, all aspects of performance of the system are considered; a subjective weight is given to each criterion by adopting the FAHP of a triangular fuzzy number, so that fuzziness and randomness of expert scoring are effectively avoided; EWM is adopted to give objective weights to all indexes, and a strong mathematical theory basis is provided; a comprehensive weight is obtained by adopting a linear weighting method, and experience judgment of experts and objective laws of sample data are comprehensively considered; finally, the evaluation result is more scientific and accurate by adopting a method approaching positive and negative ideal solutions, and the comprehensive energy system can be evaluated more objectively and reliably.
Owner:STATE GRID HUNAN ELECTRIC POWER +2
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