136 results about "Speed test" patented technology

A network device includes a storage device, a processor and a hardware acceleration circuit. The storage device is arranged to store program codes. The processor is arranged to load and execute the program codes to perform the following operation: during a network speed test period, calculating at least one transmission parameter. The hardware acceleration circuit is arranged to provide a function of hardware-accelerated packet processing, wherein during the network speed test period, the hardware acceleration circuit is further arranged to refer to the at least one transmission parameter to self-generate a plurality of packets and send the plurality of packets to another network device for network speed test.

The invention belongs to the technical field of aero-engine component test environment construction, and provides a dynamic variable speed air inlet channel test method and system under continuous air supply and exhaust conditions, and the method comprises the steps: constructing a spray pipe profile, a tester spray pipe inlet and outlet pressure ratio, air supply and exhaust pressure and a sub-model which is continuously adjusted along with the speed and is used for balancing the flow; inputting a dynamic change requirement of a target speed along with time in a continuous variable speed test under the condition of not stopping air supply into each control sub-model, and establishing a variable speed regulation model of a spray pipe profile, a pressure ratio of an inlet and an outlet of a tester spray pipe, air supply and exhaust pressure balance, a test piece posture and the like along with time in combination with a control rule of each execution mechanism; and a continuous variable-speed flow field meeting variable-speed and time requirements under the condition of uninterrupted air supply and extraction is carried out. According to the method, the blowing test with the speed continuously and dynamically changing can be carried out under the conditions of not stopping air supply and not interrupting operation of a tester, and reliable test data support is provided for design and optimization of an air inlet channel of an advanced aircraft.

Disclosed is a system (200) and a method (500) for performing a network speed test. The method comprises controlling an application interface of a user device (110) to display options related to configurability of speed test parameters. The speed test parameters are then configured in response to the input corresponding to the displayed options. The speed test parameters are provided to a backend service deployed on a server of the servers (250). The network speed test is then performed, using a microservice (240) associated with the backend service, on a transport layer protocol. A result of the network speed test is transmitted to a port of the user device (110).

The invention relates to a method and system for predicting the maximum rotating speed of a power turbine after an engine loses load, and belongs to the field of aviation gas turboshaft engines. The method comprises the following steps that a pressure signal of a gas compressor outlet of the engine, a pressure signal of a main oil way of a fuel oil distribution device and a pressure signal of an auxiliary oil way of the fuel oil distribution device are obtained; performing a simulation over-rotation test under the maximum state of the engine, and obtaining a fuel oil rule of the maximum state over-rotation of the engine according to a test result; carrying out segmented iterative calculation on the rotating speeds of the power turbine at different time points in the maximum state over-rotating process of the engine to obtain a relationship between the rotating speeds of the power turbine and time; and according to the relationship between the power turbine rotating speed and time, the maximum power turbine rotating speed in the maximum state overrunning process of the engine is obtained. According to the method, the response time, the fuel attenuation rule and the torque change rule of the over-rotation protection system are fully considered, and the maximum rotating speed under the condition of shaft breakage of the engine can be accurately predicted.

This invention provides a testing device and method for testing the maximum driving speed of a weapon station artillery piece. The testing device includes a testing box and a laser pointer. The laser pointer is coaxially mounted on the muzzle. The testing box contains a power module, a maximum driving speed test board for elevation and azimuth, and a maximum driving speed test board for azimuth. Four photosensitive modules and a stopwatch are arranged on the same panel of the testing box. Two photosensitive modules are symmetrically arranged at the top and bottom and left and right positions of the panel, respectively, to convert the received laser signals into electrical signals and transmit them to the maximum driving speed test board for elevation and azimuth or the maximum driving speed test board for azimuth, thereby controlling the start or end of the stopwatch. Based on the elevation and azimuth angles and the stopwatch display time, the maximum driving speed of the artillery piece for elevation downward and upward, and azimuth left and right is calculated. The device of this invention has high testing efficiency and accurate test results, overcoming the problems of complex and error-prone existing testing processes.

A bearing limit rotation speed test data acquisition device comprises a base for fixing a to-be-tested bearing and a main shaft penetrating through the to-be-tested bearing. The main shaft is connected with the power mechanism, and the rotating speed is controlled by the controller; a plurality of axial loading oil cylinders for applying axial loading force to an outer ring of the bearing are arranged on one side of the bearing to be measured, a temperature sensor in contact with the outer ring of the bearing is arranged on the base, and the axial loading oil cylinders are connected with a pressure sensor for measuring loading pressure; output signals of the temperature sensor and the pressure sensor are connected to the data acquisition unit; the data acquisition unit is provided with a timing unit and a storage unit used for storing the temperature value measured by the temperature sensor and the time value of the timing unit in an associated manner. The data acquisition device is used for acquiring and storing related data, so that the incidence relation between the temperature change of the bearing and the time can be conveniently obtained through related historical detection data, and the problem that the overall time consumption of the test is too long due to the fact that independent repeated tests are needed after the parameters of the bearing are adjusted each time can be solved.

The invention relates to the technical field of rubber product processing control, and discloses a control method and system for a sealing ring automatic production line, and the control method for the sealing ring automatic production line comprises the steps: constructing an equipment reference resistance curve in a no-load state; the servo press is controlled to execute a micro-speed steady-state exhaust sequence, and the position locking state is maintained at the closed tail end; calculating a net rheological torque in combination with the reference curve, and extracting a contact displacement drift amount, an in-situ vulcanization rate index and a stress relaxation rate; according to the parameters, the filling stability and the rubber material rheological state are judged, and a process correction instruction is generated. According to the method, physical and chemical characteristics are accurately decoupled from servo torque signals through a micro-speed test and position locking mechanism, closed-loop control over foreign matter risks, filling quality and vulcanization degree is achieved through multi-dimensional parameters, and the problem of quality instability caused by rubber fluctuation in sealing ring production is effectively solved.

A network device includes a storage device, a central processing unit (CPU), a hardware acceleration circuit, and a network processing unit (NPU). The storage device stores program codes. The CPU loads and executes the program codes to deal with a control function of a network speed test. The hardware acceleration circuit provides hardware-accelerated packet forwarding. The NPU interacts with the control function performed by the CPU, and deals with processing of data packets used for the network speed test. Transmission of the data packets between the network device and another network device is performed through the NPU and the hardware acceleration circuit, without intervention of the CPU.

A network device includes a storage device, a central processing unit (CPU), a hardware acceleration circuit, and a network processing unit (NPU). The storage device stores program codes. The CPU loads and executes the program codes to deal with a control function of a network speed test. The hardware acceleration circuit provides hardware-accelerated packet forwarding. The NPU interacts with the control function performed by the CPU, and deals with processing of data packets used for the network speed test. Transmission of the data packets between the network device and another network device is performed through the NPU and the hardware acceleration circuit, without intervention of the CPU.

The utility model discloses a novel high -speed test mechanism of 0BB, including bottom plate and install the carousel and IV detection subassembly on bottom plate, the outside shaping of carousel has four stations, and both sides of every station all are installed with adsorption subassembly, and one side of IV detection subassembly installs detection camera, and the front end of IV detection subassembly is installed with XYT adjusting platform, and both sides of XYT adjusting platform all are provided with vertical adjusting seat, and the installation board is connected between two vertical adjusting seats, and the support seat is installed on the installation board, and the PCB vacuum support board is locked on the support seat. This novel high -speed test mechanism of 0BB is transferred to the top of PCB vacuum support board by carousel after the photograph of camera, and the lower surface of silicon wafer is detected after the rise of PCB in the position adjustment of PCB vacuum support board, and the stability of silicon wafer is improved by the adsorption of silicon wafer, and the smooth operation of IV detection is guaranteed.

The invention discloses a machine tool performance testing method and device, a medium, a program product and electronic equipment, the machine tool performance testing method is applied to a machine tool, and the machine tool comprises a main body and a cutting part installed on the main body. The machine tool performance test method comprises the following steps: controlling a cutting piece to perform multiple cutting operations on a test original piece under the condition that a machine tool test condition is met so as to process the test original piece into a test workpiece; the cutting operation comprises the steps that the cutting part is controlled to cut the test original part based on a preset path to form a cutting hole and a step, and the step comprises side edges perpendicular to each other and side edges parallel to each other; wherein in the at least two times of cutting operation, the rotating speeds of the cutting piece are different. According to the machine tool performance testing method, the machine tool controls the cutting part to adopt different rotating speeds in at least two times of cutting operation, the limitation of a traditional constant rotating speed test is overcome, and a more real and comprehensive evaluation basis is provided for the comprehensive performance of the machine tool.

The utility model relates to the technical field of sensor supports, and provides a speed test sensor support for a circuit breaker, which is connected by matching a ball head with a connecting buckle, can quickly and conveniently adjust the angle of a speed sensor in a test process, ensures that the speed sensor is quickly aligned with a test position, and reduces the adjustment time, thereby improving the overall test efficiency. The testing personnel can complete the speed test more efficiently; by adopting the connecting frame, the crab clamp and the connecting buckle, the connecting buckle is locked by utilizing the clamping knob and the hand screw, the bracket can stably fix the speed sensor, and the data error caused by the movement of the bracket in the testing process is avoided. The clamping knob and the arc-shaped handle can more conveniently lock or loosen the connecting buckle; by adding the connecting rod and the connecting buckle, the support can cover the speed sensor in a larger range.

The invention discloses a method for generating a five-time flying shear curve of an electronic cam, and the method comprises the steps: firstly importing a D0 parameter into an S0 pre-calculation module, and obtaining a D1 synchronous segment parameter and a D1 ascending segment parameter; if the short-period characteristic in the J0 is met, a short-period starting point dimensionless speed test and optimization module in the S1 is called, and a result is imported into a waiting-section-free flying shear curve generation module in the S4 to obtain a key point; if the J0 is not in accordance with the short-period characteristics in the J0 and the J1 is forced to have no waiting section, calling an S2 long-period no-waiting section resolving module, importing a result into an S4 no-waiting section flying shear curve generation module to obtain a key point when a solution exists, and reporting an error in S5 when the solution does not exist; and if J0 medium-short period characteristics are not met and J1 accepts a waiting section, a long-period rising section adjusting module S3 is called, and a result is imported into a waiting section flying shear curve generating module S6 to obtain a key point. According to the method, various working conditions in the five-time flying shear curve generation process are fully considered, and the optimal curve can be generated within the range set by a user.

The invention provides a simulation system and method for predicting road transportation capacity in a rock-fill dam field based on vehicle speed. The simulation system comprises a vehicle speed monitoring module, a vehicle speed data set, a vehicle speed space-time prediction module and a road transportation evaluation module. The vehicle speed monitoring module is used for deleting data of an abnormal track of a transport vehicle, and deleting repeated data and isolated data to generate first standard vehicle speed data; the vehicle speed data set adopts a regional range to divide first standard vehicle speed data to obtain a vehicle speed training set, a vehicle speed verification set and a vehicle speed test set; the vehicle speed space-time prediction module is used for establishing time and space relevance of each node of a vehicle speed training set, a vehicle speed verification set and a vehicle speed test set to obtain second standard vehicle speed data; and the road transportation evaluation module outputs the road transportation capacity according to the second standard vehicle speed data and a road segment saturation flow method. The construction road transportation capacity evaluation system can accurately evaluate the construction road transportation capacity.

The invention provides an in-speed test design method beneficial to time sequence optimization. The in-speed test design method comprises the following steps: S1, a chip design stage, a comprehensive stage and a test vector generation stage: a buffer is arranged in a netlist; s2, a back-end design stage: no buffer exists in a netlist output by a back end; s3, manually modifying the netlist, and adding a buffer; s4, a form verification stage: comparing that the functions of the netlist are the same before and after the addition of the buffer; s5, a test vector generation stage: inputting a netlist containing a buffer; and S6, a simulation verification stage, wherein no buffer exists in the verified netlist. By using the method, the chip can reach faster frequency; the balance of the clock network can be ensured, the structure of the clock network can be simplified, the possibility of errors is reduced, and the process is simpler; the clock path is inserted into an inverter to optimize the time sequence, and the power consumption is lower than that of an inserted buffer; the size of the chip can be reduced by deleting unnecessary buffers, and the production cost is saved; and the correctness is ensured.

The embodiment of the invention discloses a forward collision test analysis method and device, electronic equipment and a storage medium, and the method comprises the steps: executing an active emergency braking simulation task of a vehicle active emergency braking system according to a preset test scene case and a preset test speed, and collecting test feedback data; determining a test index attribute value corresponding to the at least one test index dimension based on a preset test scene case, a preset test speed, the test feedback data and a pre-trained collision result analysis model; and determining a target test attribute corresponding to the active emergency braking simulation task based on the test index attribute value corresponding to each test index dimension, so that the transformation of the vehicle active emergency braking system test from traditional manual evaluation to intelligent and efficient analysis is realized on the whole. The test efficiency of the vehicle active emergency braking system and the accuracy of the test result are improved.

The invention provides a large-size engine acceleration test connecting system which comprises a speed test connecting system, a base connected with a centrifugal machine mounting table top, a base and centrifugal machine connecting through hole, a pressing plate penetrating hole, a front hoop and base connecting through hole, a front hoop, a test piece first connector fixing cover plate and a test piece second connector fixing cover plate. The device comprises a base, a rear hoop, a rear hoop and base connecting through hole, a test piece joint mounting groove, a test piece joint adjusting push plate and a push plate adjusting threaded hole. The connecting system ensures that the test piece is uniformly stressed in the test load applying direction through the screw rod adjusting mechanism, and the failure mechanism of the test piece in an overload environment is prevented from being confused due to damage caused by concentrated stress of a local bearing structure of the test piece. And an anti-overturning device is designed, so that the overturning risk caused by the test magnitude of resisting the test piece far exceeding the gravity of the test piece is improved, and the test safety is ensured.

This invention relates to a multi-point concurrent UDP bandwidth measurement method, apparatus, and storage medium, applied in the field of network communication technology. It includes: concurrently connecting a client to multiple speed test servers and aggregating and calculating test data from all paths, effectively avoiding interference from momentary congestion of a single network path or load bottlenecks of a single server on the measurement results, enabling the measurement results to more realistically and stably reflect the client's local network access limit capacity; employing a two-stage rate control algorithm combining "target verification and binary search," first attempting to verify the user's expected target bandwidth. If network conditions are good, the test can be completed in one go, greatly improving efficiency; if the target is not achieved, binary search is used to quickly approach and converge to the limit bandwidth value within a fixed number of rounds. This automated detection process significantly improves testing efficiency and automation.

The present application belongs to the technical field of test environment construction of aero-engine components, and provides a dynamic variable-speed inlet test method and system under continuous air supply and extraction conditions, the method comprising: constructing a nozzle profile, a test device nozzle inlet and outlet pressure ratio, and a speed-continuous adjustment sub-model of air supply and extraction pressure and flow balance; inputting the dynamic change requirement of the target speed with time during continuous variable-speed test under non-stop air condition into each control sub-model, combining the control law of each actuator, establishing a variable-speed control model of the nozzle profile, the test device nozzle inlet and outlet pressure ratio, the air supply and extraction pressure balance, and the test piece attitude with time, and performing continuous variable-speed flow field under the conditions of uninterrupted air supply and extraction to meet the variable-speed and time requirements. The method can perform speed-continuous dynamic change blowing test under the conditions of non-stop air and uninterrupted test device operation, and provides reliable test data support for advanced aircraft inlet design and optimization.

The present invention discloses a hybrid vehicle joint debugging test method, device, and system. The method includes calculating the current actual vehicle speed based on the actual output shaft speed fed back by a dynamometer; calculating the power opening according to the operating condition output of the current target vehicle speed and the current actual vehicle speed; transmitting the power opening to the hybrid vehicle control device so that the vehicle control device controls the operation of the powertrain according to the power opening; receiving the powertrain output torque collected by the dynamometer and calculating the output shaft target speed based on the output torque; transmitting the output shaft target speed to the dynamometer so that the dynamometer drives the output shaft of the powertrain to rotate according to the output shaft target speed. This embodiment accurately calculates the actual vehicle speed during joint debugging tests on a hybrid test bench, enabling the actual vehicle speed to automatically follow the target vehicle speed test and accurately control the output shaft speed.

The utility model relates to the technical field of rehabilitation platform testing, and particularly discloses a speed testing device based on a weight loss gait rehabilitation platform, which comprises a running machine, a speed testing device and a driving device, the mounting assembly is arranged on the running belt, the mounting assembly comprises a mounting head, and a moving part and a limiting part matched with the moving part are mounted on the mounting head; according to the speed testing device based on the weight-losing gait rehabilitation platform, the installation assembly is arranged on the running belt, the optoelectronic switch convenient to disassemble is arranged on the installation assembly, the optoelectronic switch is also arranged on the running machine, and when the optoelectronic switch on the running belt moves to the position corresponding to the optoelectronic switch on the running machine, the optoelectronic switch can be conveniently disassembled. The photoelectric switch can receive an electric signal once, the actual speed of the running belt can be calculated according to the electric signal receiving time and the running perimeter, the actual speed of the running belt is compared with the set speed, and therefore whether the weight reduction platform body breaks down or not is detected.

The invention relates to the technical field of image recognition, in particular to a printing slip fault diagnosis method and system based on image recognition. The method comprises the following steps: controlling a printer to execute a variable speed test in a no-load and impressing unit contact state, and determining a stress relaxation time constant of a rubber roller based on a theoretical linear speed and an actual surface speed of the rubber roller; collecting a printing breadth image sequence and a main shaft encoder signal, calculating a dense optical flow field of each frame of image, and executing spatial statistical pooling processing on the dense optical flow field to obtain a one-dimensional visual speed signal; and calculating an accumulated phase containing rubber roller lag compensation by utilizing the stress relaxation time constant, and obtaining a phase domain speed signal by utilizing the accumulated phase and the one-dimensional visual speed signal, so as to carry out grading diagnosis and closed-loop feedback control on the printing machine by utilizing the phase domain speed signal. According to the technical scheme, slippage fault diagnosis can be carried out on the printing machine.

The present disclosure provides system (102) and method (300) for enabling speed test of internet connection using a mobile application. The mobile application selects an appropriate server and initiates the data transfer by sending and receiving packets of data to and from the server. The data size and duration of the test can vary, but larger sample sizes generally provide more accurate results therefore multiple threads with increasing buffer size are used during the test time. The system measures the time it takes for the data transfer to complete in both the upload and download directions. The timing is crucial for determining the speeds. A speed test empowers users with the ability to measure, evaluate, and understand the performance of the internet connection. Thus, enabling the users to make informed decisions and ensure they receive reliable and satisfactory internet service.

A network device includes a storage device, a central processing unit (CPU), a hardware acceleration circuit, and a network processing unit (NPU). The storage device stores program codes. The CPU loads and executes the program codes to deal with a control function of a network speed test. The hardware acceleration circuit provides hardware-accelerated packet forwarding. The NPU interacts with the control function performed by the CPU, and deals with processing of data packets used for the network speed test. Transmission of the data packets between the network device and another network device is performed through the NPU and the hardware acceleration circuit, without intervention of the CPU.

The invention relates to the technical field of heat-sensitive sensor testing, in particular to a response speed testing system and method based on a heat-sensitive sensor, and the system comprises a product testing platform, a testing management unit, a calibration supervision unit, a dynamic step unit, a frequency testing unit and a testing processing unit. According to the method, analysis is preliminarily carried out from the aspect of test interference, so that the test interference is locked and fed back, the influence of test interference items on the following heat-sensitive sensor test is reduced, analysis is further carried out from the aspect of calibration of the heat-sensitive sensor in an information progressive mode, the subsequent test precision is improved, and the test efficiency is improved. And analysis is deeply carried out from two points of a dynamic step test and a frequency response test in an information feedback mode, that is, whether the response speed of the heat-sensitive sensor is qualified or not is comprehensively evaluated, so that the response speed test accuracy and credibility of the heat-sensitive sensor are improved, and reasonable management on the heat-sensitive sensor is facilitated.

The invention belongs to the field of aviation lubricating oil pump design, and relates to a high-altitude low-rotating-speed test verification device and method for a lubricating oil pump. Comprising a motor, a lubricating oil pump, a first oil tank, a second oil tank, a first pressure adjusting device, a second pressure adjusting device, a first valve, a second valve, a flowmeter, a temperature sensor and a pressure sensor. Valves, flow meters, sensors, pressure adjusting devices and the like of corresponding loops are arranged on different pump stages of the lubricating oil pump to monitor an oil tank; the high-altitude low-rotation-speed test can be carried out on the lubricating oil pump, the related performance does not need to be verified after the lubricating oil pump is assembled to the engine, whether the lubricating oil pump cannot achieve the expected function performance or not can be found in time, and engine test or work failure caused by the fact that the lubricating oil pump cannot adapt to the whole machine working condition after being assembled to the engine is avoided.

A network device includes a storage device, a central processing unit (CPU), a hardware acceleration circuit, and a network processing unit (NPU). The storage device stores program codes. The CPU loads and executes the program codes to deal with a control function of a network speed test. The hardware acceleration circuit provides hardware-accelerated packet forwarding. The NPU interacts with the control function performed by the CPU, and deals with processing of data packets used for the network speed test. Transmission of the data packets between the network device and another network device is performed through the NPU and the hardware acceleration circuit, without intervention of the CPU.

The present invention discloses a method and system for optimizing the energy efficiency of special equipment, and relates to the field of data processing technology. The method includes: determining a variable frequency drive, performing variable frequency drive modeling, and generating a variable frequency drive simulation model; collecting load constraint information to perform load division and generate multiple test loads; inputting multiple test loads into the variable frequency drive simulation model to perform different uplink speed tests and calculate corresponding energy efficiency indicators for optimization, and generate multiple optimal operating speeds; when the target special equipment is in a non-peak operating zone, automatically sensing the load and matching it with multiple optimal operating speeds to generate a target operating speed; performing uplink energy efficiency optimization control through the variable frequency drive at the target operating speed. The method solves the technical problem in the prior art that special equipment cannot effectively optimize energy efficiency when the load changes, and intelligently matches the optimal operating speed through the variable frequency drive under different load conditions, thereby achieving the technical effect of improving the energy efficiency of special equipment and reducing energy consumption.

A network device includes a network interface hardware circuit, a storage device, and a processor. The network interface hardware circuit receives packets from another network device. The network interface hardware circuit includes a counter and a proactive packet dropping circuit. The counter counts the packets during a period of network speed test, wherein the packets include first packets and second packets. The proactive packet dropping circuit proactively drops the second packets during the period of network speed test. The storage device stores a program code. The processor loads and executes the program code to perform the following operation: during the period of network speed test, reading packet count values of the counter that are generated at different time instants to calculate a number of received packets at the network device within a time interval between the different time instants.

The utility model discloses a test platform for reducing system backpressure during high-speed test of a gearbox pump. The test platform comprises a main loop system. The main loop comprises a first hydraulic set, a servo valve set and a flow dividing control module, and the first hydraulic set serves as a hydraulic power source and a preliminary pressure control part of the test platform and is formed by sequentially connecting a pump, an overflow valve, a filter element and a flow component. The pump provides required hydraulic energy for the whole test platform, the overflow valve follows the pump and adjusts and limits the maximum pressure of the system, the filter element filters hydraulic oil, impurities and pollutants are removed, oil is kept clean, system abrasion is reduced, the service life of a hydraulic element is prolonged, and test accuracy is ensured. And the flow part controls and adjusts the flow of the hydraulic oil according to test requirements. The servo valve group is arranged at the liquid outlet end of the filter element and comprises two servo valves which are connected in parallel, and an oil path of one servo valve is connected with an electromagnetic valve in parallel.