36results about "Vehicle testing" patented technology

The invention discloses a performance testing system and method for an autonomous vehicle. The method comprises the steps: obtaining a testing demand, and generating an offline testing parameter and/or online testing parameter according to the testing demand, wherein the offline testing parameter is used for configuring the offline simulation test of equipment on a to-be-tested vehicle, and the online testing parameter is used for configuring the real drive test of the to-be-tested vehicle; carrying out the offline simulation test of the to-be-tested vehicle based on the offline testing parameter, and obtaining a testing result; carrying out the real drive test of the to-be-tested vehicle based on the online testing parameter, and obtaining a testing result. The system and method providedby the invention can achieve the integrated test, comprising the offline test and the real drive test, of the autonomous vehicle according to the actual testing demand. Compared with the prior art, the system and method can obtain a more accurate and complete testing result.

A method is provided for a control system. The method may include obtaining data records associated one or more input variables and one or more output parameters, and selecting one or more input parameters from the one or more input variables. The method may also include generating a computational model indicative of interrelationships between the one or more input parameters and the one or more output parameters based on the data records, and determining desired respective statistical distributions of the one or more input parameters of the computational model.

The invention provides a multifunctional power electronics test system for electromobile. The system comprise a main controller and eight distributed modules, namely, a motor driving subsystem, a battery management subsystem, a power battery pack, a simulated battery pack, a charging device, a DC/DC/AC module, a motor measuring device and an adjustable load, and each distributed module comprises a microcontroller; the main controller controls the microcontrollers of the distributed module to control the whole system; the microcontrollers of the distributed modules is in data communication with the main controller to upload data to the main controller; the battery management system, the power battery pack, the simulated battery pack and the charging device form a charging closed-loop control subsystem; the motor driving subsystem, the adjustable load and the motor measuring device form a motor closed-loop control subsystem; and the main controller receives and records state and power feature data of the charging device, the power/simulation battery pack, the battery management subsystem and the motor driving subsystem, and displays, calculates and analyzes the data in real time.

The invention discloses an automobile hand brake fatigue test rack. The test rack is provided with a traction cable (18), a traction pulley (17), a traction poise (19), a hand brake operating cylinder (4) and a hand brake button cylinder (5), wherein a time relay and a travel switch are arranged in a control circuit of the automobile hand brake fatigue test rack; and the travel switch is a limit position travel switch of the hand brake operating cylinder (4). By using the technical scheme, the ascending process of the cylinder is controlled by the time relay and the travel switch together, and the ascending time of the cylinder is controlled by the time relay; a deflation device is adopted during loading of force on a ratchet and a tooth plate to guarantee that the load is fully loaded onthe ratchet and the tooth plate; the loading time is controlled by the time relay and can be flexibly adjusted according to a standard requirement; and the test rack has high universality and is suitable for generalization and application.

Embodiments of the disclosure relate to a test simulation method and apparatus, a computer storage medium, and an electronic device. In the embodiments of the disclosure, a feedback result of a firstcontroller is collected, the position change amount of a vehicle is determined according to the feedback result and the corresponding position update is performed. In this way, the corresponding testprocess can be completed only on a specific platform, without requiring a vehicle under test to actually travel on the road.

A system and method for providing remote access to an on-board aircraft system provides establishing communication between an aircraft server that is located within the aircraft and a remote computer that is located outside of the aircraft. In the aircraft, a request is received to establish a remote session between the remote computer and the aircraft server. A passcode is generated in the aircraft, and is transmitted from a first communication device that is collocated with the aircraft to a second communication device that is collocated with the remote computer. The passcode is then transmitted from the remote computer to the aircraft server and, upon receipt of the passcode by the aircraft server, the remote computer is provided with remote access to the on-board aircraft system.

A driver-state detection system and method with an accelerator pedal control function detects a driver's state and controlling an accelerator pedal to prevent an accident. The driver-state detection system with an accelerator pedal control function includes a driver-state detector detecting a driving state of a driver and determining whether the driver is carelessly driving a vehicle or not, a pedal controller receiving an operation signal from the driver-state detector, a vehicle state detector determining whether the vehicle is driven or stopped, based on ambient signals of the vehicle, an operation pedal installed to receive operation signals from the pedal controller and the vehicle state detector, and a vibration generator installed on the operation pedal and provided to generate or cancel a vibration of a motor.

The invention relates to a method for researching influence of a floating plate wave suppression structure for inhibition of forced fluctuation of liquid in a tank on driving safety of a vehicle. Experimental researches are conducted by use of a method of ANSYS FLUENT fluid dynamics analysis software in combination with a physical simulation test; and the application of the fluid dynamics analysissoftware provides a certain reference for establishment of a physical simulation test bench and setting of a test program. The method is characterized by comprising the following steps of (1) the ANSYS FLUENT fluid dynamics analysis software; and (2) the physical simulation test bench of the floating plate wave suppression structure. The method has the advantages that, compared with a fixed wavesuppression plate, the floating plate wave suppression structure is creatively adopted to inhibit liquid in a tank of a liquid tank truck from fluctuating forcedly, the parameter of the floating platewave suppression structure and an influence factor of forced fluctuation of the liquid in the tank are associated to establish a liquid-in-tank floating plate wave suppression structure fluid dynamics model. The model is not involved in previous forced fluctuation of the liquid in the tank and the method is a development and creation in the research method.

The invention discloses a device for detecting the static and dynamic strength of an automobile transmission bearing. Both sides of a test chamber in a front-rear direction are radially provided withradially loaded electric cylinders and lubricating oil heating devices, and the output shafts of the radially loaded electric cylinders are connected with a radial loading device, and the oil outletsof the lubricating oil heating devices are connected with an oil inlet of the test chamber through an insulating oil pipe. The oil outlet of the test chamber is in series connection with a first refrigerator through an oil pipe, and then is connected with oil return ports of the lubricating oil heating devices. Electric main shafts and the radially loaded electric cylinders are respectively arranged at both sides of the test chamber in the left and right direction. The output shafts of the electric main shafts are connected with the test shaft through a shaft coupler, and the output shafts ofthe axially loaded electric cylinders are connected with the axial loading devices. The device can simulate the transmission oil temperature, can control temperature and flow rate and has the functionof displaying flow at all times. The device realizes the detection of the load strength of the bearing of the automobile transmission under the static condition and the dynamic strength detection ofthe high-temperature dynamic rotation. The detection result is accurate and reliable and the detection efficiency is high.

The invention relates to a conversion device for a shift quality test of an automatic transmission vehicle. The conversion device is composed of a first raising rod and a second raising rod, wherein the upper part of the first raising rod is extended with the second raising rod, and the first raising rod and the second raising rod are coaxial; a first hole is formed in the center of the first raising rod, a second hole is formed in the center of the second raising rod, and the first hole communicates with the second hole; the diameter of the second hole is smaller than that of the first hole,and a rubber sleeve is arranged at the lower segment in the first hole; two corresponding threaded holes are formed in the two sides of the first raising rod, and a through hole is formed in the second raising rod; the threaded holes are used for fastening the connection with a gearbox shift raising rod, and the through hole is used for inserting a pull rod and raising the gearbox shift raising rod. The conversion device can meet the vehicle test requirements that the raising rod needs to raise to unlock P catch. The range of application of shift quality measuring equipment is expanded, and meanwhile the tooling manufacturing cost is also saved.

Data recording systems (100) and methods (400) for synchronizing data of a plurality of different data types on a single packet (300). The methods involve: receiving the data and an audio frame containing voice data and timing data communicated over a plurality of channels; generating, in response to the reception of the audio frame, a combined packet on which the audio frame and at least a portion of the data are time synchronized to each other; and substantially simultaneously storing the combined packet in a primary data store and a secondary data store of a data recorder for subsequent use in reconstructing events leading up to a crash of a land vehicle, aircraft or vessel. The portion of data may include data link data, flight data and/or image/video data. The channels may include a cockpit channel and a plurality of pilot channels.

The invention relates to the electromechanical field and particularly relates to a tractor chassis two-machine loading running-in test stand. The test stand includes a base, a traction input mechanism, an input lifting adjusting mechanism, a test piece mounting mechanism and a loading mechanism which are mounted on the base, and further includes a real-time data detection and processing system anda PLC automatic control system, wherein the mechanisms and the system are connected with a tractor chassis test piece. The tractor chassis two-machine loading running-in test stand is advantaged functions of synchronous running-in, real-time detection and cleaning purification are achieved, the hidden fault risk is eliminated, the integral quality of a tractor is improved, the energy source is saved, production efficiency is improved, and online loading running-in, real-time detection, cleaning purification and PLC automatic control are achieved.

The invention relates to the field of vehicle road simulation tests, and particularly relates to a complete vehicle road test room vehicle travelling channel device. The technical scheme is that two ends of a cross beam (1) are directly and fixedly installed on a pit wall (9), and two ends of a longitudinal beam (2) are installed on central sections of the pit wall (9) and the cross beam (1) respectively; platform modules are installed between the longitudinal beam (2) and the pit wall (9); an actuator (8) is installed on a ground pit; each platform module comprises a plurality of bearing units (3) which are parallel to each other and a connection component (4); and the connection component (4) is vertical with the bearing units (3) and is fixedly connected with the bearing units (3). The device provided by the invention has the beneficial effects that the cross beam and the longitudinal beam are adopted to construct a main bearing structure of the whole device; a safety channel is provided for a vehicle which is driven to a predetermined position of the test through the platform modules, and a problem that a heavy vehicle is not convenient for hoisting is solved; adjusting requirements of wheels spans and wheel bases of different vehicle are satisfied, and versatility is possessed; the structure is simple, installation and connection are convenient; and the device is suitable for various kinds of road simulation test rooms.

The invention provides a vehicle simulation test scene construction method and device, and can provide simulation test scenes for intelligent automobiles, automatic driving automobiles, and connected automobiles. According to the method, after a first entity is selected from an ontology model based on a to-be-tested task, one or more second entities associated with the first entity are automatically selected from the ontology model based on a preset entity association relationship in the ontology model, and a simulation test scene is constructed based on the selected first entity and the one or more second entities, so that the situation of missing or more entities in the process of constructing the simulation test scene based on manually selecting entities by testers in the prior art is avoided, and the accuracy of constructing simulation test scenes is improved.

The invention discloses a fixing device for automobile rubber and plastic part production detection, which comprises a mounting base, an electric lifting support, an electric turntable, a cylinder and a fixing platform, wherein the mounting base is internally provided with a battery pack; the electric lifting support is arranged above the mounting base through a mounting seat; the upper end of the electric lifting support is provided with the electric turntable through a bolt; the edge of one side above the fixing platform is provided with a first mounting plate; one side of the first mounting plate is provided with the cylinder through a long-neck bolt; one side of a first fixing ring is provided with a first fixing plate; one side of a second mounting plate is provided with a second fixing ring through a mounting part; and one side of the second fixing ring is provided with a second fixing plate. Through mounting a series of structures, the fixing device can facilitate detection during the automobile part production detection.

The invention discloses a damping detection device of a dialing button of an air outlet of a vehicle air conditioner with an automatic correction function, and belongs to the field of detection equipment. In the damping detection device disclosed by the invention, a damping detection mechanism comprises a translation mechanism, a clamping mechanism, a correction and linear push-pull detection mechanism, and a rotation twisting force detection mechanism, the translation mechanism is installed on a bottom plate, the clamping mechanism is installed on the translation mechanism and can sequentially move on a feeding station, a correction station, a push-pull force detection station and a rotation twisting force detection station under the drive of the translation mechanism, and the correctionand linear push-pull detection mechanism and the rotation twisting force detection mechanism are both installed on the bottom plate. In the damping detection device of the dialing button disclosed bythe invention, the dialing button of the air outlet of the vehicle air conditioner is subjected to automatic correction, left and right push-pull force detection and upper and lower rotation twistingforce detection in sequence, no manual correction of the dialing button is needed, the automation degree in the detection process is high, the detection efficiency is high, the detection data are moreaccurate, and the operation is simple and convenient.

The present invention provides an autonomous vehicle lane change monitoring method and lane change monitoring system, wherein the lane change monitoring system comprises at least a reference vehicle, a test road, a network communication device, and a control platform, wherein the reference vehicle and the to-be-tested vehicle traveling on the test road, wherein the control platform sends a control instruction to the reference vehicle and the to-be-tested vehicle through the network communication device for the to-be-tested vehicle to change lane on the test road when appropriate, the driving data of the to-be-tested vehicle is transmitted to the control platform through the network communication device, so as for the control platform to evaluate the lane change performance of the to-be-tested vehicle based on the driving data.

The invention provides an automobile fatigue durability test system and an automobile, which relates to the technical field of automobiles. The automobile fatigue durability test system comprises a microcontroller, and a sensor unit and a memory which are connected with the microcontroller, wherein the sensor unit comprises a first sensor group and a second sensor group, the first sensor group comprises a plurality of sensors arranged at a spindle nose position of a wheel for acquiring road spectrum information; and the second sensor group comprises a plurality of sensors mounted on an automobile body vertically above the spindle nose position, and the sensors are used for acquiring response information of the automobile body to the road spectrum information; and the microcontroller is configured to read a signal of each sensor, and send the signal of each sensor to the memory for storage. The automobile comprises the automobile fatigue durability test system. The automobile fatigue durability test system and the automobile enable the automobile fatigue durability test to go through the whole life cycle of the automobile.

The invention discloses an automobile gear shifting noise detection method and device, a readable storage medium and electronic equipment. A sound pick-up is arranged in an automobile, a vibration sensor is arranged on a gearbox shell, and a flywheel, an input shaft constant mesh gear and an output shaft constant mesh gear of a gearbox are each provided with a rotating speed sensor; the method comprises the following steps: determining an effective test time range in which gear shifting noise is located; determining the time corresponding to the peak value of the vibration signal in the dynamic gear shifting working condition test within the effective test time range to obtain target time; acquiring a rotating speed signal of each rotating speed sensor in the dynamic gear shifting working condition test, and reading clutch torque data of the whole vehicle; time ranges corresponding to all gear shifting stages in the gear shifting process are determined according to the rotating speed signals and the clutch torque data; and determining the gear shifting stage corresponding to the time range to which the target time belongs as the stage of generating the gear shifting noise. According to the method, the reason causing the gear shifting noise in the vehicle can be analyzed so as to guide rectification and control of the gear shifting noise problem of the whole vehicle.

The invention discloses a novel floating disc for testing a truck positioning instrument, which comprises a support, a bottom plate and a base, the bottom end surface of the base is connected with a rolling body through a bolt, the base is slidably mounted on the bottom plate through the rolling body, the support is mounted on the upper surface of the base, a rotating roller is rotatably mounted on the support, a driven wheel is arranged at one end of the rotating roller, a first air cylinder and a motor are installed on the portions, located on the two sides of the rotating roller, of the upper surface of the base, the output end of the motor is connected with a driving wheel, and the driving wheel and the driven wheel are in transmission connection through a synchronous belt. The novel floating disc has the advantages that the problem of dynamic testing in truck wheel positioning can be solved, the testing precision is improved, and the structure is compact.

The invention discloses a brake test device for a two-wheeled motorcycle. The brake test device comprises a main drive system, a loading system, a wheelbase adjustment system, a chassis and an electric control system. A front roller and a rear roller of the main drive system are linked by a trapezoidal telescopic drive shaft; a motor is connected to one side of the rear roller in a length direction; and an inertia roller is connected to one side of the front roller in a length direction. Auxiliary rollers in the loading system are arranged at the two sides of the front roller and the rear roller respectively. The part of the front roller in the main drive system is installed at the wheelbase adjustment system; and the loading system is installed at the wheelbase adjustment system. A rotational speed torque sensor is arranged at one end of the rear roller of the main drive system; the rotational speed torque sensor and a pressure sensor arranged at the loading system are connected withthe electric control system. The main drive system, the loading system, and the wheelbase adjustment system are installed on the chassis. With teh wheelbase adjustment system, motorcycle testing withdifferent wheelbases is realized.

The invention discloses a rollover test platform of a power grid communication support vehicle, and relates to the technical field of rollover test.The rollover test platform comprises a moving mechanism, the top of the moving mechanism is connected with an adjusting assembly, the moving mechanism comprises a track and a side frame, and the bottom end of the interior of the track is connected with a plurality of first sliding strips; the outer part of each group of first sliding strips is slidably connected with a first sliding block, the outer parts of the plurality of groups of first sliding blocks are jointly connected with a mobile platform, the two groups of side surfaces in the side frame are connected with second sliding strips, and the adjusting assembly is adjusted by moving the communication support vehicle to the test platform. The communication support vehicle and the test platform are in an inclined state, the counterweight block falls down by releasing the adsorption of the electromagnet to the counterweight block, so that the mobile platform is pulled by the two groups of steel wire ropes outside the two groups of guide pulleys to quickly move, the communication support vehicle is pushed out of the surface of the test platform, and the damage condition of the communication support vehicle is checked.

The invention provides an actual road emission RDE evaluation method suitable for any test boundary, and the method comprises the steps: carrying out a chassis dynamometer RDE emission test under the condition of a fixed test boundary and a fixed whole vehicle test cycle specified by a standard, and measuring an RDE emission value EB under the condition of the fixed test boundary and the fixed RDE 95-C test cycle; determining N main influence factors which have the maximum influence on RDE emission and the value range of each main influence factor; determining a correction function of each main influence factor on the RDE emission value; determining each correction coefficient in the correction function corresponding to each main influence factor through a rotating hub test; determining an actual RDE emission value under the test boundary to be evaluated; determining an RDE emission target value under the test boundary to be evaluated; solving an emission risk coefficient based on the actual RDE emission value ER and the RDE emission target value under the to-be-evaluated test boundary; and performing risk judgment on the to-be-evaluated test boundary based on the elimination risk coefficient.