32results about How to "Reduce the cost of performance testing" patented technology

The invention relates to a water pump efficiency, flow and lift detection method and system. The method comprises the steps of obtaining the output power f and the output frequency P<f>, <output>, of a frequency changer, wherein the frequency changer is in signal connection with a water pump; and according to the output power f and the output frequency P<f>, <output>, of the frequency changer, calculating the flow Qf, the lift Hf and the efficiency Eta f of the water pump. According to the water pump efficiency, flow and lift detection method and system, a controller reads the output power and the output frequency of the frequency changer; and according to the output power and the output frequency of the frequency changer, the flow, lift and efficiency of the water pump can be calculated. The structure is simple, and measurement can be achieved without installing of a pressure sensor and a flow meter; meanwhile, through PID real-time control and measurement display, the precision of measured water pump performance data is high, errors brought by manual measurement and treatment are overcome, the measurement efficiency is improved, high precision and high automation of the water pump performance measurement are achieved, the water pump performance measurement cost is reduced, and the measurement time is shortened.

The invention discloses a loading device for reliability test of a servo motor and a using method of the loading device. The loading device comprises a lower base plate, an upper base plate, a casing,a fan, a plate seat, a humidifier, a vertical plate, a large through hole, an insertion board, a first chute, a long slide block, a second chute, a short slide block, the servo motor, a first ring, asecond ring, a third chute, a direction-Y sliding platform, a first ring column, a second ring column, a fourth chute, a friction plate, a rotating shaft with a belt, a belt pulley, a belt, a coupling, a connecting shaft, an exciter pedestal, a first exciter, a small motor, a gear, a first shaft, a level rotating arm, a toothed bar, an installation plate, a second shaft, a pulley and a second exciter. The bearing condition and working environment of the servo motor in the practical processing process can be simulated vividly in the test process, object materials and processing cutters are notconsumed, the excellent performance of the servo motor is ensured, the servo motor performance test cost is reduced effectively, the damage mechanism of the servo motor is analyzed by test, and the using performance of the servo motor can be improved.

The invention discloses a closed circulation centrifugal compressor characteristic test method. The method comprises the following process that inert mixed gas is injected into a closed circulation loop, air supplied by an air source is adopted to push a centripetal turbine, and a compressor tester coaxial with the centripetal turbine is driven to rotate by the centripetal turbine; according to the set working condition, a rotating speed of the centripetal turbine is adjusted, so that an open circulation loop enters a rotating speed closed-loop control state; after inlet and outlet airflow parameters of the compressor tester are stable, inlet and outlet thermodynamic parameters thereof are measured; and by adjusting a rotating speed of the centripetal turbine in the open circulation loop,the compressor tester is synchronously adjusted to other to-be-detected rotation speeds, and measurement and recording work of all characteristic line data points are completed in sequence. Accordingto the method, matching change of the reduced flow rate and the reduced rotation speed of the compressor tester can be achieved, the variable working condition requirement of a performance test of a centrifugal compressor is met, and the adjustment control difficulty of the performance test of a centrifugal compressor part is greatly reduced.

The invention discloses an optical cable performance detection method and a device. The method comprises steps that an optical fiber performance detection device calculates the normal optical power of the corresponding optical fiber according to an optical amplification plate normal optical power and attenuation parameters corresponding to each optical fiber, compares the actual optical power of each optical fiber at this moment obtained from a webmaster server with the normal optical power of the corresponding optical fiber, regards the optical fiber whose comparison result is not in the preset normal attenuation value range as an optical fiber with a hidden performance danger and outputs a detection results of optical fibers with the hidden performance dangers. In this way, via the optical fiber performance detection device, identifications of the optical fiber with the hidden performance dangers are determined with no need for manual calculation and determination on the optical fibers with the hidden performance dangers, thereby effectively increasing performance detection efficiency of the optical fibers, greatly reducing cost of performance detection and increasing accuracy rate of the performance detection.

The invention provides an electronic variable valve timing system function testing device applied to the technical field of variable valve timing system testing. In the electronic variable valve timing system function testing device, a drive motor (2) is connected with an engine crankshaft (5), a cam shaft speed sensor (11) is connected with an acquisition control module (9), an adjustment motor (6) is connected with a motor control component (8), the motor control component (8) is connected with the acquisition control module (9), the acquisition control module (9) is connected with a rotational speed torque sensor (10), and the drive motor (2) is connected with the acquisition control module (9). The electronic variable valve timing system function testing device and a performance test method of the invention can accurately and quickly simulate the actual working conditions of the electronic variable valve timing system used in the engine to judge the product performance of the timing system and contribute to performance optimization.

The invention provides a live streaming media performance test method, which comprises the following steps that: S1, a streaming media subscription terminal waitting for receiving a command issued by a server, and the streaming media subscription terminal receiving the command and executing the corresponding command; S2, managing information of each streaming media subscription terminal, creating a task, and configuring pressure test data needing to be subjected to pressure test; S3, monitoring task scheduling time, issuing a scheduling command, issuing a start command to the corresponding terminal, and testing the performance of the streaming media according to the pressure test data, and initiating an ending command to each streaming media subscription terminal at preset ending time; S4, recording the recorded information of each streaming media subscription terminal in the performance test process, and performing unified report presentation. The performance pressure test is realized, the performance test cost can be effectively reduced, and even the idle bandwidth can be commercially realized.

The invention relates to an industrial software debugging method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring equipment related information of industrial equipment in an industrial scene, and constructing a corresponding virtual equipment model based on the equipment related information; combining the virtual equipment models to obtain a digital twin production line; determining test parameters and a performance analysis mode matched with the to-be-debugged industrial software; performing performance analysis on the industrial software in the digital twin production line according to the test parameters and the performance analysis mode; if the performance analysis result represents that the industrial software does not meet the performance optimization condition, adjusting the industrial software according to the performance analysis result; and based on the adjusted industrial software, returning to the step of performance analysis for continuous execution, and stopping until the adjusted industrial software reaches a performance optimization condition, thereby obtaining the optimized target industrial software. By adopting the method, the debugging efficiency of the industrial software can be improved.

The invention discloses a centrifugal pump performance curve sample obtaining method and application of the centrifugal pump performance curve sample obtaining method in machine learning. The method comprises the steps that firstly, data of one performance parameter of multiple centrifugal pumps changing along with flow are collected; performing mathematical modeling on the other two unknown performance parameters to obtain a simplified formula of the unknown performance parameters; then, based on the relation between the performance parameters and a simplified formula of unknown performance parameters, calculation values of known performance parameters are obtained through calculation; and finally, taking a mean square error of a true value and a calculated value of the known performance parameter as an objective function of a differential evolution optimization algorithm, and optimizing to obtain coefficients of two unknown performance parameter calculation formulas. Finally, unknown performance parameter values under different flows are obtained through calculation. According to the method, a large number of performance parameter samples can be quickly and conveniently obtained. The method is further combined with a machine learning model, performance prediction results of different centrifugal pumps can be obtained based on geometric parameters of the centrifugal pumps, calculation time is short, implementation is convenient, and therefore the research and development progress is accelerated.

The invention discloses a method for testing mechanical property of an inert gas closed cycle radial flow type impeller based on a turbocharger structure. The method comprises the steps: by taking the turbocharger as a basic structure, replacing an original centripetal turbine or a centrifugal compressor of the turbocharger with the tester, and taking the centrifugal compressor of the turbocharger as as a power consumption device or taking the centripetal turbine of the turbocharger as a power device. The tester, a heater, a heat regenerator and a cooler form a closed loop with inert gas as a working medium through pipelines and valves, and closed cyclic utilization of the inert gas is achieved by cooperatively controlling a plurality of test devices. The method has the remarkable characteristics of ingenious and reasonable structural design, resource saving and the like, and is prone to large-scale popularization and application.

The invention relates to the field of performance testing, aims to solve the problem of relatively high performance testing cost in an existing cloud environment, and provides a test method and systemfor reducing the performance test cost in a cloud environment. The technical scheme is summarized as follows: the method comprises steps of receiving network information input by a user, and selecting at least one agent in a network corresponding to the network information; and receiving target server information input by the user, verifying whether a server corresponding to the target server information exists in a network corresponding to the network information or not, if so, transmitting the target server information to the selected at least one agent, and otherwise, stopping access to the network or the server. Unnecessary cost caused by flow among networks and network changes can be reduced, more accurate performance test results and system stability can be provided, and the methodis suitable for performance test in a cloud environment.

The invention provides a service flow cutting method and device based on a time sequence model, which can be used in the technical field of artificial intelligence, and the method comprises the steps: receiving a flow cutting request transmitted by an operation and maintenance personnel terminal; obtaining server cluster information for processing a service, obtaining index data corresponding to a flow cutting index in a server cluster through the server cluster information according to the preset flow cutting index, and predicting the index data through a preset time sequence model to obtain a flow cutting index change trend; according to the flow switching control method and device, predicting the flow switching index change of the server cluster for service processing through the preset time sequence model to obtain the flow switching index change trend, so that the cost of performance testing is reduced; and the accuracy of predicting the change trend of the system flow switching index and the stability of server cluster service processing are improved.