225 results about "Hardware in loop simulation" patented technology

The invention provides a multifunctional simulation system for automatic driving. The multifunctional simulation system comprises a virtual vehicle module, a virtual chassis control module, a virtualroad module, a virtual traffic module, a time control unit module and a visualized interactive interface module, the virtual road module provides cartographic information for an automatic driving algorithm and the virtual traffic module, the virtual traffic module provides road conditions including vehicles, pedestrian, traffic lights and the like for the automatic driving algorithm, the automaticdriving algorithm communicates with the virtual vehicle module through a virtual chassis so as to obtain vehicle information and send vehicle control instructions, a visualized interactive interfacesends human-computer interaction information to the simulation system and displays system information in a visualized three-dimensional effect, and finally, the time control unit module controls intervals of simulation time of the simulation system comprising the automatic driving algorithm. Data interfaces of the virtual modules are kept consistent with those of a real system, so that multifunctional modes, including hardware-in-loop simulation, of the simulation system can be realized.

The invention discloses a simulation test bed for an automatic gearbox controller. The test bed comprises a host computer, a real-time object machine, a signal generating and measuring part, an engine electric controller and a plurality of electromagnetic valves, wherein the host computer, the real-time object machine, the engine electric controller and the electromagnetic valves are connected with the signal generating and measuring part respectively; the host computer downloads a simulation model of an automatic transmission vehicle dynamic assembly to the real-time object machine; an engine model, an automatic gearbox model and a whole vehicle dynamic model are integrated in the simulation model of the automatic transmission vehicle dynamic assembly; the simulation model of the automatic transmission vehicle dynamic assembly contains hardware-in-the-loop of the gearbox controller and hardware-in-the-loop of the engine electric controller to form a virtual vehicle gearbox controller develop simulation platform close to a real vehicle, can greatly improve the developing test efficiency of the gearbox controller under a condition of ensuring the software quality of the gearbox controller. The invention also discloses a method for establishing the simulation model of the automatic transmission vehicle dynamic assembly.

A fault diagnosis method for power electronic circuits based on optimizing a deep belief network, including steps. (1) Use RT-LAB hardware-in-the-loop simulator to set up fault experiments and collect DC-link output voltage signals in different fault types. (2) Use empirical mode decomposition to extract the intrinsic function components of the output voltage signal and its envelope spectrum and calculate various statistical features to construct the original fault feature data set. (3) Based on the feature selection method of extreme learning machine, remove the redundancy and interference features, as fault sensitive feature data set. (4) Divide the fault sensitive feature set into training samples and test samples, and primitively determine the structure of the deep belief network. (5) Use the crow search algorithm to optimize the deep belief network. (6) Obtain the fault diagnosis result.

The invention discloses a hardware-in-the-loop simulation system of an automatic mechanical transmission (AMT) controller, which comprises a LABCAR system, wherein the LABCAR system comprises a gasoline engine vehicle model, the gasoline engine vehicle model comprises a vehicle submodel, the vehicle submodel comprises an automatic transmission case submodel, and the automatic transmission case submodel comprises a signal collection model, a transmission system model, an execution mechanism model and a shift-level processing model. The invention also discloses a method for the hardware-in-the-loop simulation system to automatically test the AMT controller. Due to the adoption of the hardware-in-the-loop simulation system and the method, the interaction between vehicles and the AMT controller can be actually simulated, so different tests can be performed on the AMT controller.

The invention discloses an anti-rollover warning control method and system for vehicles and a hardware-in-the-loop simulation method. The anti-rollover warning control method for vehicles comprises following steps: obtaining current motion state parameters of a vehicle and then calculating vehicle rollover indexes; determining and obtaining vehicle rollover warning time according to rollover conditions and a threshold value of the rollover warning time and completing calculation of one warning period; finally, according to the rollover warning time value, determining whether there is risk of rollover; when there is the risk of rollover, performing corresponding brake control. The anti-rollover warning control method provided in the invention is reasonable; accurate and efficiency anti-rollover warning can be achieved; timely and reasonable brake control are adopted to mitigate the drive burden of drivers. Besides, by means of the provided hardware-in-the-loop simulation method based onthe anti-rollover warning control system, the anti-rollover effect of the anti-rollover warning control system can be accurately simulated.

The invention discloses an in-loop simulation test system and test method for a vehicle management system. The test system comprises a hybrid power system stand and an in-loop test bench for being in communication connection with a vehicle management system to be tested. The hybrid power system stand comprises an engine and a main motor which are mutually connected as well as a load dynamometer which is connected with the main motor. By enabling an actual hybrid power drive system to be combined with a conventional hardware-in-loop simulation system, the vehicle management system to be tested is allowed to be in a real vehicle power drive system in a simulation manner, thereby improving vehicle management system software development quality and precision, reducing real vehicle road test times, reducing development time and cost, and reducing road test process risk; meanwhile, vehicle power performance test can be achieved; and through matching optimization of the power system, the whole performance of the vehicle is improved.

Apparatus for providing real-time data to a hardware-in-the-loop simulator for an automotive vehicle. The apparatus includes a test vehicle having at least one sensor which generates an output signal representative of a condition of the vehicle. A wireless transmitter such as a cellular phone on the motor vehicle receives the sensor output signal as an input signal and transmits that output signal to a computer network. A simulator data server receives the data from the computer network and provides that data to the hardware-in-the-loop simulator.

The invention relates to a four-wheel drive pure electric vehicle hardware-in-the-loop simulation experimental system. The system comprises a drive motor and controller subsystem, an electric dynamometer and controller subsystem, torque and rotational speed sensors, a vehicle dynamic model real-time simulation subsystem and a signal detection and analysis subsystem. The system achieves pure electric vehicle four-wheel independent drive via the motor and controller subsystem, and achieves simulation of vehicle travel load via the electric dynamometer and controller subsystem. Vehicle dynamic response is achieved by operating a real-time simulation model through a real-time controller, and signal input, output and conditioning of a vehicle control unit are achieved by the aid of an FPGA (field programmable gate array). The system is capable of performing hardware-in-the-loop simulation for four-wheel drive pure electric vehicles to achieve rapid development and product testing of a vehicle drive system, and has the advantages of energy saving, safety, rapidness and low cost.

The invention discloses a dSPACE-based motor control hardware-in-the-loop automatic test system and method. The system includes a to-be-tested object motor controller, a hardware-in-the-loop simulation platform and an automatic test system platform; the hardware-in-loop simulation platform includes a real-time processor, an IO board card, test management software, and the like, wherein the real-time processor is connected with the to-be-tested motor controller through the IO board card and operates a virtual motor model to simulate the operating state of a motor; and the automatic test platform includes a keyword driving module, a test case editing module, a Robot Framework automatic test framework, a test execution module, and a test report output module. With the dSPACE-based motor control hardware-in-the-loop automatic test system and method of the invention adopted, the logic function of the to-be-tested motor controller can be tested automatically; the strategy response of fault injection can be verified; the startup of the automatic test system can be controlled through command line statements; a test report can be automatically generated; automatic testing can be realized ina real sense; and a sound test process of an enterprise can be established. The automatic test system can be conveniently integrated with an existing open-source Jenkins regression test system.

The invention discloses a method and a system of electronic control unit (ECU) hardware-in-loop simulation automated testing. The method comprises the following steps: a test form is filled in so that one or a plurality of test form cases, an automation code is run to enable the form test cases to generate executable files for testing, the test is executed, and a test report is generated. An automated interpreter code is needed to design only once and is permanently effective, and an automated testing development engineer is enabled to be out of a lot of test case code translation work. By adoption of a form test case development mode, the method and the system of ECU hardware-in-loop simulation automated testing are simple, efficient, universal and flexible, and cost performance is high and practical. After a lot of form tests are developed by a testing project, corresponding executable test cases are generated by queue with one key and are automatically executed with one key, so that hardware-in-loop (HIL) automated testing of the ECU is achieved in the real sense.

The invention provides a hardware-in-the-loop simulation platform for energy management strategies of a plug-in hybrid electric vehicle. The hardware-in-the-loop simulation platform comprises a PC upper computer, a vehicle control unit, a line concentrator, a VT system real-time simulation system, CANoe software, MotoTune software, a brake pedal, an accelerator pedal and a key switch. According to the platform, the PC upper computer constructs a plug-in hybrid electric vehicle model through MATLAB/Simulink, and a real-time simulation core is generated; the real-time simulation core is downloaded to VTSystem by the CANoe software; a vehicle energy management strategy is established by MotoHawk software and is downloaded to the vehicle control unit by the MotoTune software. The PC upper computer monitors and evaluates the bus environment by the aid of the CANoe software. Compared with an existing hardware-in-the-loop simulation platform, the hardware-in-the-loop simulation platform has the advantages that the energy management strategy development efficiency of the plug-in hybrid electric vehicle is improved and the like.

The invention relates to a testing method and system of auxiliary driving vehicle hardware in loop simulation. Information fusion and decision are conducted through a to-be-tested intelligent controller according to corresponding scene information, a lateral dynamics command is sent to a driver model of the hardware in a loop simulation platform, a longitudinal dynamics command is sent to a wholevehicle control unit, then the longitudinal dynamics command is sent to a whole vehicle dynamics model through the whole vehicle control unit, the driver model and the whole vehicle dynamics model respectively response to the lateral dynamics command and the longitudinal dynamics command, thus present vehicle gesture information is generated, the present vehicle gesture information is compared with standard vehicle gesture information, and testing situation of the hardware in loop simulation is judged. According to the testing method and system of the auxiliary driving vehicle hardware in loopsimulation, joint simulation is conducted on the to-be-tested intelligent vehicle controller and the whole vehicle control unit, the simulation platform is constructed according to a real vehicle system, the simulation reduction degree and precision are improved, and the problems that testing period of a real vehicle is long, the efficiency is low, the cost is high, and testing is influenced by factors such as scene and weather limiting are solved.

The invention relates to a hardware in-loop simulation test system for a traffic signal control system, and relates to the technical field of traffic signal control and traffic simulation, for overcoming the defects that a practical signal control system cannot support prior evaluation and traffic simulation software can not simulate a timing scheme of the signal control system in real time. The test system consists of the traffic signal control system, signal conversion equipment and a traffic simulation module, wherein one-to-one or one-to-many data transmission between the signal conversion equipment and a signal machine and between the traffic simulation module and the signal conversion equipment can be realized by wire/wireless connection. The signal conversion equipment can be interface equipment which independently runs, or an input/output card on a main board of a computer, or a universal interface assembled on the signal machine and the computer. The data transmission takes the signal conversion equipment as a bridge, vehicle detecting information is transmitted to the signal machine by the traffic simulation module, and signal timing information is transmitted to the traffic simulation module by a traffic signal controller.

The invention discloses a hardware-in-the-loop test bench based on an electromechanical braking system, which is divided into a software part, a real-time platform, a signal processing part and a hardware part, wherein the real-time platform consists of a host and target machines 1 and 2; the host and the target machines 1 and 2 are connected by a wireless network; the signal processing part consists of first and second data acquisition cards with the model of PCL-818HD, third and fourth data acquisition cards with the model of PCL-727, a fifth data acquisition card with the model of PCI-6601 and a V/F conversion module; the first and second data acquisition cards with the model of PCL-818HD and the third and fourth data acquisition cards with the model of PCL-727 are connected with the target machines 1 and 2 by an ISA bus; the fifth data acquisition card with the model of PCI-6601 is connected with the target machine 2 by a PCI bus; and the hardware part comprises an EMB actuator controller, an EMB actuator, a force sensor, a revolution transmitter and a current sensor.

The invention discloses a hardware in-loop simulation system for comprehensive optimization control of main power and manipulation of a ship. The system comprises a virtual ship motion simulation system, a ship main power and manipulation comprehensive optimization controller, a ship steering and main engine console, a ship monitoring simulation system, a system scheduling server and an Ethernet, wherein the virtual ship motion simulation system, the ship main power and manipulation comprehensive optimization controller, the ship monitoring simulation system and the system scheduling server exchange data with each other through the Ethernet respectively; and the ship main power and manipulation comprehensive optimization controller is directly connected with the ship steering and main engine console through analogue level. Because a user of the invention can set different ship parameters such as length of the ship, draft and block coefficient and sea condition parameters such as wind wave strength, direction and the like on a user interface provided in the ship monitoring simulation system as required, the control simulation effects of various types of ships under various sea conditions can be simulated.

The invention discloses a method for carrying out integrated testing on an intelligent driving vehicle. The method comprises the following specific steps: (1) realizing a model in-loop simulation testunder a virtual test scene for an intelligent vehicle control strategy and algorithm; (2) realizing a software in-loop simulation test under a virtual test scene for a code generated or handwritten by the model; (3) downloading the model code to the target hardware to realize hardware in-loop simulation test under the virtual test scene; (4) mounting the controller on the intelligent vehicle to realize vehicle in-loop simulation test under the virtual test scene; and (5) mounting the controller on the intelligent vehicle to realize real vehicle test under a real scene, wherein the test scenein the step (1)-(4) is to reuse the same virtual test scene. According to the method, different simulation technologies based on the same test scene are shared in the project development process of asingle ECU of the intelligent vehicle, so that the function and performance of the controller are well verified, and the safety and reliability of the vehicle in the actual driving process are ensured.

The invention provides a hardware-in-loop simulation based wind power unit modeling method. The method comprises the following steps: establishing a pneumatic mechanical model of a wind power unit; establishing a power generator converter model of the wind power unit; and establishing an external power grid model. According to the hardware-in-loop simulation based wind power unit modeling method provided by the invention, the modeling of the pneumatic mechanical model of the wind power unit, the power generator converter model of the wind power unit and the external power grid model is finished, and a real-time simulation interactive technology is provided based on the models, so that the authenticity and timeliness of simulation of the whole wind power unit are ensured and the authenticity of a wind power unit control policy and running characteristics of parts is ensured; and a true power grid condition can be simulated in a lab environment to simulate true running characteristics of the wind power unit, and especially the completeness of a practical main control policy of the wind power unit can be tested.

The invention provides a wind turbine generator control system hardware in-loop simulation and test platform. The platform comprises a computer equipped with GH Bladed software, an RTDS, a communication PLC and a control system of a wind turbine generator, wherein a wind model of the wind turbine generator, a mechanical model and a pneumatic model are established in the GH Bladed software, an electrical model of the wind turbine generator is established in the RTDS, an electric power electronic switch model is employed to support current transformer controller hardware in-loop simulation, bidirectional real-time communication between the GH Bladed software and the RTDS is realized through the communication PLC, the control system of the wind turbine generator employs a control system configuration of an actual fan blower, is realized through employing a physical controller and comprises a main control PLC and a current transformer controller, a main control algorithm of the wind turbine generator is operated through the main control PLC, and same functions as an actual set main controller are performed; a current transformer control algorithm is operated through the current transformer controller, and pulse width modulation pulses of a current transformer and a protection circuit of the current transformer are outputted. The platform is advantaged in that the platform can be used for testing commercial main controllers and current transformer controllers.

The invention belongs to the field of semi-physical simulation tests, and particularly provides an HILS (hardware-in-the-loop simulation) test bed for an electromechanical brake booster and a testing method. The test bed comprises a PC (personal computer), a real-time simulation platform, a hardware platform and a signal collection and emission platform, wherein the PC is connected with the real-time simulation platform through a high-speed special bus with a cable serving as a medium; the signal collection and emission platform is connected with the PC on the basis of a TCP/IP (transmission control protocol/internet protocol) through a local area network and performs signal communication with the hardware platform through a sensor. The HILS test bed is a real-time simulation platform unit, tests of hardware of the electromechanical brake booster, an automobile dynamics simulation model, an ESP (electronic stability program) of an automobile and actuator equipment in a simulation loop can be realized, and the problem that an existing test stand cannot perform testing, calibration, algorithm improvement and subjective assessment of pedal feeling on the electromechanical brake booster in a concentrated manner is solved.

The invention relates to a hardware-in-the-loop simulator and a hardware-in-the-loop simulating method. The hardware-in-the-loop simulator is connected with a driving device and is used for hardware-in-the-loop simulating a motor, a mechanical device and a transmission system connected with the motor. The hardware-in-the-loop simulating method comprises steps of obtaining motion signal and corresponding data measured by a sensor according to driving signal of the driving device, the model of the motor and the model of motion shaft of the motor through a motion simulating unit; and simulating output signal of the sensor through an output unit according to the data measured by the sensor, and feeding back the simulated output signal to the driving device. The hardware-in-the-loop simulator and implement way of the method can be adapted to signal simulation of different type of sensors and can conveniently simulate a motion control system using digital sensor, such as an encoder or an interferometer and the like as a feedback device.