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

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 relates to a simulated cutting force loading device of a head-oscillating turntable five-axis machine tool and a using method thereof. The device comprises an X-direction cutting force loading assembly, a Y-direction cutting force loading assembly, a Z-direction cutting force loading assembly, a rotary table turning-direction cutting force loading assembly, and a head-oscillating turning-direction cutting force loading assembly; and cutting force loading is realized by screwing an X-direction pre-tightening bolt, a Y-direction pre-tightening bolt, a Z-direction pre-tightening bolt, a rotary table turning-direction pre-tightening bolt, and a head-oscillating turning-direction pre-tightening bolt respectively. To be specific, the method comprises: the device is hoisted on a machine tool rotary table, the rotary table turning-direction fixed plate is fixedly connected to the machine tool rotary table, and a machine tool cutter main shaft and a motor shaft of a damping motor are fixedly connected; a group of cutting forces are set, the pre-tightening bolts of the five cutting force loading assemblies are screwed tightly by using a torque wrench, so that the friction forces of the five cutting force loading assemblies are equal to the set cutting force, and because values can not read directly by using a friction force method, screwing torques are calculated based on a formula of M=KFd / mu and then reading of values is carried out; and then the machine tool is started and processing procedures are executed, the practical operation state of the of the machine tool is simulated practically on the condition of force bearing, and the machine tool performance on the current cutting force condition is tested.

The invention discloses a characteristic test method for a closed-loop radial-flow impeller based on the structure of a turbocharger. The turbocharger is used as the basic structure, and the original centripetal turbine or centrifugal compressor is replaced with a tester. And the centrifugal compressor of the turbocharger is used as the power consumption device, or the centrifugal turbine of the turbocharger is used as the power device; The closed loop with gas as the working fluid can realize the closed loop utilization of the inert gas by cooperatively controlling multiple test equipments. The present invention has remarkable features such as ingenious and reasonable structure design, resource saving and the like, and is easy to popularize and apply on a large scale.

The invention discloses a centrifugal pump performance curve sample acquisition method and its application in machine learning. The method first collects the data of one of the performance parameters of various centrifugal pumps changing with the flow rate; Modeling to obtain the simplified formula of the unknown performance parameters; then based on the relationship between the performance parameters and the simplified formula of the unknown performance parameters, the calculated value of the known performance parameters is calculated; finally, the real value of the known performance parameters and the calculated value The mean square error is used as the objective function of the differential evolution optimization algorithm to optimize the coefficients of two unknown performance parameter calculation formulas; finally, the unknown performance parameter values ​​under different flow rates are calculated. This method can quickly and conveniently obtain a large number of performance parameter samples. The method is further combined with the machine learning model, and the performance prediction results of different centrifugal pumps can be obtained based on the geometric parameters of the centrifugal pump. The calculation time is short and the implementation is convenient, thereby speeding up the research and development progress.

The invention discloses a system memory analysis method and device. The method comprises the steps that related memory parameters needing to be tested by a to-be-tested system and analysis rules of all the memory parameters are determined; an analysis sequence of the related memory parameters is established; memory analysis is conducted on memory performance test data of the to-be-tested system under various scenes according to the analysis sequence of the related memory parameters and the analysis rules of all the memory parameters, and a memory analysis report is generated. According to the technical scheme, the performance situation of a to-be-tested system memory can be accurately analyzed, the test difficulty of a performance test is lowered, the efficiency of performance test analysis and the quality of the performance test are improved, and evaluation of the system performance and positioning and analysis of system defects are effectively guided.

The invention discloses a mechanical performance test device of an inert gas closed-cycle radial impeller based on a turbocharger structure, comprising: an inert gas storage tank, a pressure stabilizer box, a turbocharger, a tester, a motor, and a cooler , heater, regenerator, throttle valve, anti-surge valve, bypass valve, temperature and pressure probe, vacuum pump. Take the turbocharger as the basic structure, replace its original centripetal turbine or centrifugal compressor with the tester, and use the centrifugal compressor of the turbocharger as the power consumption device, or use the centrifugal compressor of the turbocharger as the power consumption device. Turbine as power plant. The tester, heater, regenerator and cooler form a closed loop with inert gas as the working fluid through pipelines and valves, and the closed loop utilization of inert gas is realized by cooperatively controlling multiple test equipment. The invention has the remarkable features of ingenious and reasonable structure design, resource saving and the like, and is easy to popularize and apply on a large scale.

The invention provides a reliability test loading device for a rolling linear guide rail and ball screw system and a using method thereof. The reliability test loading device for the rolling linear guide rail and ball screw system comprises an X-direction load loading assembly, a Y-direction load loading assembly and a Z-direction load loading assembly, and realizes a mode of uniform stress in theY-direction and the Z-direction and sliding loading. A novel machine tool performance test method is provided. After the test loading device is assembled and used with a machine tool to be tested, the load application on a linear guide rail and a ball screw pair in the linear feeding movement of the machine tool can be truly simulated without consuming material objects and machining tools, the machine tool performance test cost is effectively reduced, and the machine tool manufacturing cost is effectively reduced while the excellent performance of the machine tool is ensured.

The invention discloses a closed cycle centrifugal compressor characteristic test device, comprising: an inert mixed gas storage tank, an intake pressure regulator, a pressure stabilizing box, a flow meter, intake and exhaust temperature and pressure probes, and a compressor test The device, high temperature exhaust valve, throttle valve, pressure reducing valve, cooling water and water inlet and drainage device, heat exchanger, gas composition analyzer and vacuum pump are connected in sequence to form a closed loop, with inert mixed gas as the working medium; while the low pressure The air source, flow regulating valve, flow fine-tuning valve, heater and centripetal turbine are connected to form an open circulation loop, with air as the working medium. The invention has remarkable features such as simple and reasonable structural design, resource saving, etc., and is easy to be popularized and applied on a large scale.

The invention discloses a multifunctional testing platform for a microseismic system, which includes a microseismic signal collection and transmitting device, and further includes first to fourth microseismic monitoring wells arranged uniformly and clockwise on the outer circle sequentially, and sequentially arranged evenly and clockwise on the inner circle. For the fifth to eighth microseismic monitoring wells, the outer circle and the inner circle have the same center, and a microseismic signal transmission well is set at the center of the circle. The first microseismic monitoring well is located in the east of the microseismic signal transmission well, and the fifth microseismic monitoring well is located In the southeast of the vibration signal transmission shaft, the microseismic monitoring sensors installed in the first to eighth microseismic monitoring wells are respectively connected to the microseismic signal acquisition and transmission devices. The invention also discloses a method for testing the positioning accuracy of the microseismic source, which can use the positioning algorithm to be tested to locate the position of the vibration source according to the monitored microseismic signal, and compare it with the position of the real vibration source to determine the positioning accuracy of the microseismic source. Position the pros and cons of the algorithm and end the test.

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 discloses a vertical numerical control milling machine simulation cutting force loading device and an application method. The device comprises an X-direction cutting force loading component, a Y-direction cutting force loading component, a Z-direction cutting force loading component and a torque loading component. The application method of the device comprises the steps that the simulation cutting force loading device is hoisted onto a machine table to be fixed, a cutter spindle of a machine tool is fixedly connected with a center piece rod, a Z-direction corrugated damping tubeis connected with a hydraulic system, and a hydraulic pressure maintaining system is started; and a group of cutting force is set by adjusting the tightness between bolts and sliding blocks and adjusting the openness of a valve port of a throttle valve, the machine tool is started, a machining program is run, the actual running state of the machine tool under a stress condition is truly simulated,and machine tool performance under the current cutting force condition is tested. Through the device and the application method, the stress condition of the machine tool in the actual machining process can be truly simulated without the need for consuming real materials and machining cutters, so that machine tool performance test cost is effectively lowered, and machine tool manufacturing cost islowered while excellent performance of the machine tool is guaranteed.

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 method for testing the characteristics of a closed cycle centrifugal compressor. The process is as follows: inject an inert mixed gas into the closed cycle loop, drive a centripetal turbine through the air supplied by an air source, and drive the centripetal turbine coaxially with it. The compressor tester rotates; according to the set working conditions, adjust the speed of the centripetal turbine, so that the open loop enters the speed closed-loop control state; when the airflow parameters at the inlet and outlet of the compressor tester are stable, measure the thermodynamic parameters of the inlet and outlet; By adjusting the rotational speed of the centripetal turbine in the open circulation loop, the compressor tester is simultaneously adjusted to other rotational speeds to be tested, and the measurement and recording of all characteristic line data points are completed in sequence. The invention can realize the matching change of the equivalent flow rate and the equivalent rotational speed of the compressor tester, meet the requirement of variable working conditions in the performance test of the centrifugal compressor, and greatly reduce the adjustment and control difficulty of the performance test of the centrifugal compressor components.

The invention provides a five-shaft and double-swinging-head planer type milling machine simulated cutting force loading device and a using method. The device comprises an X-direction cutting force loading assembly, Y-direction cutting force loading assemblies, a Z-direction cutting force loading assembly and a swinging head rotating-direction cutting force loading assembly. The method comprises the following steps: hoisting the simulated cutting force loading device on a working table of a machine tool and fixing the simulated cutting force loading device; fixedly connecting a spindle of a cutting tool of the machine tool with a rod body of a ball rod; communicating a corrugated damping tube with a hydraulic oil source; starting a hydraulic pressure maintaining system; setting a cutting force; adjusting the open degree of a valve port of a throttling valve; tightening pre-tightening bolts through a torque wrench so that suction and discharge resistance and friction force of hydraulic oil are equal to the set cutting force, wherein because the suction and discharge resistance of the hydraulic oil cannot be directly read, the suction and discharge resistance is required to be read after a pressure value is calculated through a formula P=F / S, and because the friction force cannot be read directly, the friction force is required to be read after tightening torque is calculated through a formula M=KF'd / mu; starting the machine tool and running a machining program; truly simulating the actual running state of the machine tool under the stress condition; and testing the performance of the machine tool under the current cutting force condition.

The invention provides a simulated cutting force loading device for a three-axis boring mill and a use method. The device comprises a rigid framework, an X-direction position adjustment assembly, a Y-direction cutting force loading assembly, an X-direction position adjustment assembly and a cutter rotation-direction cutting force loading assembly. The method comprises steps as follows: the simulated cutting force loading device is hoisted on a bench of a machine tool, the position of a simulating facing head is adjusted through the X-direction position adjustment assembly and the Y-direction position adjustment assembly and fixed, and a boring bar on the simulating facing head and a boring bar on the facing head of the machine tool are fixedly connected; a group of cutting force is set, pretightening bolts in the Y-direction cutting force loading assembly and the cutter rotation-direction cutting force loading assembly are tightened through a torque wrench, so that friction force in the cutting force loading assemblies is equal to the set cutting force, and friction force needs to be read out after the tightening torque is calculated according to the formula M=KFd / mu due to the fact that the friction force cannot be directly read; the machine tool is started and runs machining programs, the actual operation state of the machine tool is simulated really under the force bearing condition, and the performance of the machine tool under the current cutting force condition is tested.

The invention discloses a method and device for detecting the performance of an optical fiber cable. The method is that the performance detecting device for an optical fiber cable calculates the nominal optical power of the corresponding optical fiber cable according to the nominal optical power and attenuation parameters of the optical amplifier board corresponding to each section of the optical fiber cable ; and compare the actual optical power of each section of optical fiber cable obtained from the network management server with the nominal optical power of the corresponding optical fiber cable respectively, and use the optical fiber cable whose comparison result is not within the preset normal attenuation value range as Optical fiber cables with performance hazards; output the detection results of all optical fiber cables with performance hazards. By adopting the technical solution of the present invention, through the optical fiber cable performance detection device, the identification of the optical fiber cable with potential performance hazards is determined, and no manual calculation is required to determine the optical fiber cables with potential performance hazards, thereby effectively improving the performance detection efficiency of optical fiber cables and greatly reducing the cost of performance detection. Improved performance detection accuracy.