46results about How to "Realize dynamic testing" patented technology

The invention discloses a dual-fuel engine controller simulation test system, and is used for realizing an HIL test of an HPDI engine controller. The system includes a real-time simulator and an engine controller, wherein the real-time simulator is used for operating an environmental model, a driver model and a full vehicle model, sending vehicle environment parameters output by the environmental model, driver behavior parameters output by the driver model and each vehicle operating parameter output by the full vehicle model to the engine controller, and receiving a control signal sent by the engine controller, and continuing to operate the environmental model, the driver model and the full vehicle model according to the control signal, and the full vehicle model includes a dual-fuel engine model (including a gas circuit model, a fuel supply model, a cylinder combustion model, and a heat balance model), an accessory model, a drive system model, and a vehicle longitudinal power model. The engine controller is used for determining the operating condition of the engine according to the vehicle environment parameters, the driver behavior parameters and the vehicle operating parameters and generating and sending the control signal.

The invention discloses a device and a method for dynamically detecting recoverability of fabric wrinkles. The device comprises an air compressor, a pressure reducing valve, a solenoid valve, a cylinder and a pressing block connected orderly. The device also comprises 1, a control box which controls the solenoid valve by a relay unit and drives the cylinder to drive the pressing block on a pressing block platform by the solenoid valve so that the pressing block is driven to press against a sample on a sample fixing platform, 2, a CCD camera which is fixed vertically above the sample and is used for acquiring a video sequence or images of the sample, 3, a light source which is used for providing horizontal illumination for the CCD camera in acquisition of the video sequence or the images, and 4, a computer which is used for processing the video sequence or the images acquired by the CCD camera. The method comprises the following steps of creasing a sample in a pneumatic pressurization way, and acquiring a video sequence of recovery situation of freedom wings of the sample after pressure release by the CCD camera so that dynamic detection of recoverability of fabric wrinkles is realized.

The invention discloses an inherent frequency measuring device for 600 DEG C high-temperature thermal vibration coupling test of a high-speed cruise missile airfoil surface. The device comprises a missile airfoil surface structure test piece, a quartz lamp heating array, a vibration exciter, a ceramic extension rod, an acceleration transducer, a computer and a heat insulation baffle plate. In the high-temperature thermal vibration coupling test of the cruise missile airfoil surface, the missile airfoil surface is quickly heated by using the quartz lamp heating array and generates random vibration through the vibration exciter at the same time to form a 600 DEG C high-temperature thermal vibration coupling test environment. The rigid ceramic extension rod with high rigidity and high temperature resistance is arranged on the missile airfoil surface to guide the vibration signals on the missile airfoil surface out of the high-temperature thermal field, and the high-temperature resistant lightweight ceramic fiber heat insulation baffle plate is used for implementing thermal diffusion prevention shielding for the radiation thermal field. The normal temperature acceleration transducer arranged at the cold end of the ceramic extension rod dynamically tracks and measures the vibration signals guided to the missile airfoil structure of the normal temperature zone to acquire the change rule of the inherent frequency of the missile airfoil surface under the high-temperature thermal vibration coupling test environment; and the device provides an effective dynamic high-temperature thermal vibration coupling test means for researching and manufacturing high-speed cruise missiles.

The invention relates to an integrated test system for a battery system. The integrated test system includes an automatic detection device, a high voltage control device and a charge and discharge test device. The high voltage control device is provided with a static test channel and a dynamic test channel. The static test and dynamic test on the battery system can be realized by the control of one host computer alone, without a change in the test system, through the control of the on and off of the dynamic test channel connected between the charge and discharge device and the battery system and the control of the on and off of the static test channel connected between the automatic test device and the battery system. The comprehensive test functions are gained, and the test cost is greatly reduced while the test speed and efficiency are ensured.

The invention provides an oil film test experiment device of a plunger pair in a plunger pump and relates to the hydraulic element manufacturing field. The oil film test experiment device aims at solving the problem that plunger pairs in the existing plunger pumps are large in oil film parameter test difficulty. The oil film test experiment device comprises an inclined plate, a slipping boot, a plunger and an oil inlet pipe and also comprises a coupling, an abrasion-resistant plate, a plunger sleeve, a tensioning sleeve, a tensioning sleeve seat, a supporting frame, a connecting part, a rotating shaft and an arc-shaped sliding groove; the supporting frame comprises a connecting plate and a fixed base plate which are perpendicular to each other; the tensioning sleeve seat is fixed on the connecting plate of the supporting frame through bolts. The oil film test experiment device of the plunger pair in the plunger pump is applied to an oil film test experiment of the plunger pair in the plunger pump.

This invention relates to one memory radiation test method and its device, wherein, the device comprises radiation source, level conversion circuit, main control unit, and data input unit and system set and process unit. This invention method comprises the following steps: writing designed data on one memory device; then starting radiation source for memory intensity, set distance, set time; in testing process reading and writing data to the memory part according to read mode; real time comparing the memory part real time output value and predication value to judge whether its is right; once there is wrong data rightly recording its invalid information to find out threshold point of invalid of memory.

The invention discloses a closed-loop control-based micro-Newton order micro-thrust dynamic test table and test method. The micro-thrust dynamic test table comprises a swinging arm, a calibration coil, a calibration magnet, a calibration controller, a displacement sensor, a displacement sensor clamping piece, a PID closed-loop control module, a displacement meter controller, a damping mechanism, adriving force coil, a flexible shaft mechanism and a base, wherein the swinging arm is arranged on the base by the flexible shaft mechanism, the calibration coil is wound around an outer side of thecalibration magnet and is connected with the calibration controller, the driving force coil, the displacement meter controller and the calibration magnet are sequentially arranged on the swinging arm,the driving force coil, the displacement meter controller and the displacement sensor are connected with the PID closed-loop control module, the damping mechanism and one end, near to the driving force coil, of the swinging arm are arranged at intervals, and a to-be-measured thrust device installation station is arranged at the other end of the swinging arm. By the micro-thrust dynamic test table, the inherent frequency of the micro-thrust dynamic test table can be effectively improved, and the micro-thrust dynamic test of micro-Newton order is achieved.

The invention discloses an axial plunger pump flow distribution pair test oil membrane thickness test system and relates to the technical field of an electrically driven liquid pump. The system comprises an experiment compartment, a flow distribution disc, a cylinder flow distribution end surface, a cylinder main body, an end cover, a high-pressure oil pipe, a low-pressure oil pipe, a positioning pin, an A support bearing, a B support bearing and an oil return pipe, wherein the experiment compartment is of a casing-like structure and is internally provided with an experiment oil chamber; in the experiment oil chamber, the flow distribution disc is installed at the right end of a driving shaft; the axle center of the end cover is connected with the axle center of the cylinder main body through the positioning pin; the cylinder main body is internally provided with two plunger chambers symmetrical about the axle center; the end cover is provided with oil pipe holes at positions where the two plunger chambers are in butt-joint cooperation; one of the two oil pipe holes is connected with the low-pressure oil pipe, and the other is connected with the high-pressure oil pipe; and the cylinder flow distribution end surface is circumferentially uniformly provided with probes of three current vortex displacement sensors. A conventional flow distribution pair test simulation apparatus is simplified, and the actual pump working condition of a flow distribution pair is more accurately simulated.

The invention discloses a linear and angular displacement sensor measurement system and method, and the system comprises a servo motor, a ball screw, a nut sliding block, a screw fixing seat, a shaft coupler, an angular displacement sensor, a standard grating ruler, and a measured linear displacement sensor. The ball screw passes through the nut sliding block, and two ends of the ball screw are respectively disposed on the screw fixing seat. The servo motor and the angular displacement sensor are respectively disposed on the screw fixing seat through the shaft coupler. The ball screw rotates to drive the angular displacement sensor to make synchronous movement. The standard grating ruler and the measured linear displacement sensor are respectively driven by the nut sliding block through the magnetic force of a connection magnet. The system with comprehensive performances achieves the universal linear displacement sensor and angular displacement sensor for high-precision and high-resolution measurement, reduces the cost, and saves the occupied space.

The invention discloses a programmable electronic load. The electronic load is measured by AD after amplifying two paths of current signals by superposition. The two paths of circuits have the same structure and consist of an operational amplifier circuit, a drive circuit, a field effect transistor and an operational amplifier superposition circuit which are connected in turn respectively. A DA signal is amplified once, connected with an input end of the operational amplifier circuit with a tensile load current control signal, amplified and then output to a drive amplifying circuit; the signal is output by the drive amplifying circuit and then connected with a gate of the field effect transistor; a source of the field effect transistor is connected with a positive electrode of a power supply, while a drain is connected with a negative electrode of the power supply through current sampling resistors which are connected in series; the two ends of the current sampling resistors are connected with an in-phase input end and an inverting input end of an operational amplifier respectively; and one path of the signal is connected with the drive amplifying circuit after being output by the operational amplifier, and the other path of signal is superposed with another circuit to be amplified to perform AD measurement. By adopting superposition of two paths of current signals, dynamic test of the signal from a high end to a low end can be realized, output of any dynamic load current waveform is realized, and dynamic test speed is improved.

The disclosed testing method for vehicle reaction type brake bench comprises: fitting two braking force curves by computer, generating electric signal varied with time by means of DAC, adjusting the amplitude and impedance of signal to match with the signal from bench sensor; sending obtained two path signal to bench measuring system; comparing the result from former measuring system and known parameters to obtain the system error. This invention is efficient to both static and dynamic signal.

The invention relates to a low-temperature micro-nano indentation test system for large-stroke low-temperature drift under a microscopic assembly, belonging to the technical field of precision instruments. The low-temperature micro-nano indentation test system comprises a vacuum chamber system module, a sliding cryostat assembly and an indentation testing mechanical structure module. Large-strokequasi-static loading is carried out with a hybrid drive mode of a precision displacement drive platform and a voice coil motor in cooperation; a sample and an indenter are simultaneously cooled by a contact refrigeration method; an embedded integrated heating element and temperature measuring element are used to carry out continuous temperature varying closed-loop adjustment and weaken the influence of low temperature drift on test results; the microscopic imaging assembly is used to carry out accurate positioning of indentation locations and in-situ observation of surface topography. The low-temperature micro-nano indentation test system can be used for providing the experimental basis for studying the mechanical properties of materials in low temperature environment and the change rule of mechanical properties of materials with temperature, and has significant application value in research on the mechanical properties of key service materials of aerospace and polar and deep-sea scientific research equipment, superconducting transmission equipment, etc.

The invention relates to a power line carrier simulation operation test system and a method thereof. The system comprises a communication module support unit, a channel parameter simulation unit, a carrier signal sampling unit, a radio frequency performance detection unit, a measurement and control and man-machine interaction unit and a direct current power supply unit, wherein the communication module support unit and the channel parameter simulation unit are separately connected with communication modules to be tested; the communication modules to be tested are distributed on a master node and slave nodes; the channel parameter simulation unit is connected with the radio frequency performance detection unit through the carrier signal sampling unit; and the measurement and control and man-machine interaction unit and the direct current power supply unit are separately connected to the radio frequency performance detection unit. Compared with the prior art, the simulation system provided by the invention can provide different power line noises, access impedance and analog signal attenuation, and can reliably carry out power line carrier dynamic tests.

The invention discloses a resistance strain-type tubular pressure sensor and a pressure site test method. A sensor pipe joint comprises a thin wall circular pipe joint and a plurality of foil-type resistance strain gauges, wherein the thin wall circular pipe joint is made of a high-strength martensite material, the plurality of foil-type resistance strain gauges are pasted along an annular direction of an inner wall of the pipe joint, sensitive grids of the foil-type resistance strain gauges are same in specification, the sum of the lengths of all sensitive grids are equal to the perimeter ofthe inner wall of the pipe joint, length directions of the sensitive grids are parallel to the annular direction of the pipe joint, the sensitive grids are sequentially connected in an end-to-end manner and are arranged in a width direction along an axial direction of the pipe joint in a staggered way, and a continuous 360-degree enclosed annular strain measurement region is formed in the annulardirection of the inner wall of the pipe joint. By the sensor pipe joint, the internal pressure field of cable rope steel wire bundles can be measured, and the unfavorable influence of a soil arch effect on a traditional pressure sensor device during pressure test is eliminated; by combining a pressure test calculation method, and the size of confining pressure of a measurement point and the distribution condition of the confining pressure along each direction can be accurately obtained; and multi-point measurement can be achieved after the sensor pipe joint and a lead round pipe are connectedin series by a flexible connection piece.

The invention discloses a rock damage test experiment table under ultrasonic vibration. The experiment table comprises a guide fixing mechanism, a rock clamping mechanism, a hydraulic pressurization mechanism, an ultrasonic vibration mechanism, a rock amplitude measurement system, a sound emission measurement system and an infrared feature measurement system. According to the rock damage test experiment table under the ultrasonic vibration built by utilizing an amplitude detection technology, a sound emission technology and an infrared detection technology, dynamic testing of rock internal crack development, rock internal stress change, an attenuation condition of a stress wave in a rock and effective rock crushing depth can be realized; and the damage process of the rock under the ultrasonic vibration can be comprehensively tested in multiple aspects, and optimal rock crushing parameters under the ultrasonic action, including a frequency, a static pressure, an amplitude and the like are determined, so that the defects and the errors of a single detection method are reduced, the experiment efficiency is improved, favorable support is provided for the research of an ultrasonic rockcrushing mechanism, and the experiment table has the advantages of being accurate, convenient and economical.

The invention belongs to the technical field of power electronics, and discloses a high-voltage device dynamic parameter test circuit which comprises a high-voltage direct-current power supply, a charging and discharging relay, a bus capacitor, a load inductor, a tested element and a controller. The high-voltage direct-current power supply provides corresponding bus voltage according to a test working condition set by the upper computer; the charging and discharging relay is used for controlling charging and discharging of the bus capacitor; the bus capacitor is used for providing instantaneous power during dynamic parameter testing; the load inductor is used for providing instantaneous current under the dynamic parameter test; the tested element is switched on or switched off according to the received test signal, and the switch dynamic parameter of the tested element is tested; and the controller is used for controlling the on-off of the charging and discharging relay and triggering a double-pulse driving signal of the tested element. The invention provides a novel, convenient, safe and reliable high-voltage device dynamic parameter test means. The embodiment of the invention further discloses a high-voltage device dynamic parameter test platform and method.

The invention provides a dynamic detection system and method for a scooter, and relates to the technical field of dynamic performance detection of the scooter. A traction instruction is sent to a traction module to allow the traction module to tract a scooter to be detected to run on a simulation track when a control module receives the traction instruction of the scooter to be detected; and a camera shooting unit collects image information when the scooter to be detected runs and sends the image information to the control module; the control module performs dynamic analysis to the scooter to be detected according to image information, achieves the dynamic test to the scooter, and effectively alleviates the problem that the personal safety of consumers is threatened because of not fully testing the performance of the scooter.

The invention discloses an automatic brake test device and an autonomous vehicle dynamic brake performance test method. The automatic brake test device comprises a control part, a brake part, a brakeoperation console, a measuring device, multiple drive parts and multiple wheel parts, each wheel part comprises a wheel, each drive part is used for accordingly driving one wheel to rotate, the control part is used for controlling output power of each drive part on the corresponding wheel part, the brake part is applicable to braking of the wheels, the brake operation console comprises an automatic brake device, the automatic brake device is connected with the brake part, so as to drive the brake part to brake the wheels, and the measuring device is applicable to real-time measurement on torque and rotation speed of each wheel when the wheels brake. According to the automatic brake test device disclosed by the invention, a brake test on multiple wheels of an autonomous vehicle can be simulated and dynamic torque and rotation speed changes of each wheel can be tested in a process that the wheels brake, thus braking condition of the autonomous vehicle can be more accurately evaluated.

The invention provides a dynamic testing method, device and system for a software system. The method includes the steps that a breakpoint is set on at least one target variable value of a source code of the to-be-tested software system at a server side, and when the system runs to the target variable value corresponding to the breakpoint, the server side stops running the source code of the to-be-tested software system and sends a notification message of stopping running the source code of the to-be-tested software system to a client side; the client side receives and processes the notification message sent by the server side and feeds back a generated control instruction corresponding to the notification message to the server side; the server side executing corresponding operation after receiving the control instruction fed back by the client side, and then dynamic testing of the source code of the to-be-tested software system is achieved. By means of the dynamic testing method for the software system, dynamic testing of the software system can be performed in the system running process.

The invention discloses a test method for simulating the flowing state of oil well cement paste and integrating maintenance and test, and relates to the technical field of petroleum drilling. The method comprises the following steps of: simulating the flowing state of the cement paste in a well by using a transmission mechanism controller and a stirring mechanism, simulating the temperature and pressure environment of the cement paste in the well by using a temperature control subsystem and a pressure control subsystem, keeping the simulation environment stable, acquiring the ultrasonic propagation speed by using an ultrasonic control subsystem, converting the ultrasonic propagation speed into a set cement compressive strength value, and finally generating a set cement compressive strengthdynamic test curve graph by using a computer control system to realize the dynamic test of the set cement compressive strength. The method can simulate the actual high-temperature and high-pressure environment in the well, can simulate the flowing speed of the cement paste in the injection process by adjusting the rotating speed, and can research the influences of different rotating speeds on theset cement compressive strength.

The invention belongs to the field of fuel cell testing, and discloses an energy-saving air supply system of a fuel cell test board, which comprises a main path, the main path comprises an air filter,an air compressor, a cooler, a main path valve, a flow meter and a humidifier which are connected in sequence; the tail end of the humidifier is connected with a cathode inlet of the galvanic pile, and an outlet of the galvanic pile is connected with the back pressure valve; a branch circuit is further arranged in the test board, the branch circuit inlet connecting end is arranged between the cooler and the main circuit valve, and the branch circuit outlet connecting end is arranged between the galvanic pile and the back pressure valve; and a branch regulating valve is arranged on the branch.The system is simple in structure, energy consumption can be remarkably reduced, cost is saved, and production efficiency is improved.

The invention discloses an electronic module wedge-shaped packaging slot locking force measuring system, and aims to provide a measuring system capable of measuring the locking force of a two-degree-of-freedom wedge-shaped locking strip. The method is realized through the following technical scheme: a rectangular short base and a rectangular long base which are in vertical lap joint with each other are adopted in the test module; the end face of the formed L-shaped vertical body is provided with positioning bolts which are arranged in a linear array and linear array grooves which are perpendicular to each other and are provided with pressure sensors on the inner sides; each pressure sensor is connected with a data acquisition instrument through a wire hole in the back end of the linear array groove, and the positioning bolts are combined with the pressure sensors and inserted into check blocks below the low-heat-conduction locking strips and the high-heat-conduction locking strips to adjust the test distance; the test module uploads a measurement result to the upper computer in real time through the pressure sensor, carries out dynamic test on the locking force of the wedge-shapedlocking strip, and transmits and displays the measurement result in real time.

The invention discloses a programmable intelligent load control circuit for smart home, which comprises a main control module, a display module and a power supply module, wherein the display module and the power supply module are both connected with the main control module. The programmable intelligent load control circuit further comprises a constant current module, a constant voltage module, a selection module, a digital-to-analog conversion module and a main power dissipation circuit, wherein the constant current module and the constant voltage module are both connected with the selection module, the selection module is connected with the main power dissipation circuit, the digital-to-analog conversion module is connected with the constant current module, the constant current module, the constant voltage module, the selection module and the digital-to-analog conversion module are all connected with the main control module, and the main control module, the display module, the constant current module, the constant voltage module, the selection module, the digital-to-analog conversion module and the main power dissipation circuit are all connected with the power supply module and are powered by the power supply module. The system is good in automation degree and stability, achieves the dynamic testing of the electrical performance of the smart home, and has a good market application value.

The invention discloses an axial plunger pump flow distribution pair test oil membrane thickness test system and relates to the technical field of an electrically driven liquid pump. The system comprises an experiment compartment, a flow distribution disc, a cylinder flow distribution end surface, a cylinder main body, an end cover, a high-pressure oil pipe, a low-pressure oil pipe, a positioning pin, an A support bearing, a B support bearing and an oil return pipe, wherein the experiment compartment is of a casing-like structure and is internally provided with an experiment oil chamber; in the experiment oil chamber, the flow distribution disc is installed at the right end of a driving shaft; the axle center of the end cover is connected with the axle center of the cylinder main body through the positioning pin; the cylinder main body is internally provided with two plunger chambers symmetrical about the axle center; the end cover is provided with oil pipe holes at positions where the two plunger chambers are in butt-joint cooperation; one of the two oil pipe holes is connected with the low-pressure oil pipe, and the other is connected with the high-pressure oil pipe; and the cylinder flow distribution end surface is circumferentially uniformly provided with probes of three current vortex displacement sensors. A conventional flow distribution pair test simulation apparatus is simplified, and the actual pump working condition of a flow distribution pair is more accurately simulated.