397 results about "Hardware-in-the-loop simulation" patented technology

A method of running a target device in a hardware-in-the-loop network simulation via a host computer may include launching a network application on a host computer each having a protocol stack and a network device connected to a simulated network of target devices, interposing, on the host computer, a target device interface and adaptor between the protocol stack and the network device and transferring data and control information between the network application and the target device via the network device, whereby the target device runs on the host computer as if the target device were running directly on a host computer having a network device directly compatible with the target device.

The embodiment of the invention provides an in-loop rapid simulation test system of an unmanned vehicle. The system comprises: a virtual simulation test subsystem used for generating a virtual test scene and transmitting a pavement state control instruction to a test bench control subsystem; the test bench control subsystem used for simulating a pavement state, as well as estimating the driving performance of the unmanned vehicle according to driving parameters of the unmanned vehicle; and an unmanned vehicle control subsystem used for performing driving control on the unmanned vehicle according to the virtual test scene. The above system adopts the simulation test mode of combining the virtual reality technology with the hardware in-loop, so that a controllable, repeatable and effective in-loop rapid simulation test of the unmanned vehicle can be achieved indoors; and furthermore, all extreme or special road conditions are exhausted as much as possible, so that the safety and the reliability of the unmanned vehicle before start off can be fully guaranteed. The embodiment of the invention further provides an in-loop rapid simulation test method of the unmanned vehicle.

The invention provides an electric bus integrated control hardware in-loop test platform and a test method. The electric bus integrated control hardware in-loop test platform is formed by an air source component, a line control air brake system, a conventional brake component, a driving control component, a signal simulation component, a target machine, and a host computer based on line control air brake, and the electric bus integrated control hardware in-loop test method comprises an acceleration test, a brake test and a steering test. According to the test platform and the test method, accurate adjustment of the brake pressure of four wheels is realized through front and rear axle proportion relay valves and four ABS solenoid valves in a line control air brake system, and integrated control of electric buses is realized with the combination of signal simulation components including a two-degree-of-freedom rotation platform and a wheel speed simulation motor and the corresponding test method.

A hardware-in-the-loop (HIL) electrical grid simulation system and method that combines a reactive divider with a variable frequency converter to better mimic and control expected and unexpected parameters in an electrical grid. The invention provides grid simulation in a manner to allow improved testing of variable power generators, such as wind turbines, and their operation once interconnected with an electrical grid in multiple countries. The system further comprises an improved variable fault reactance (reactive divider) capable of providing a variable fault reactance power output to control a voltage profile, therein creating an arbitrary recovery voltage. The system further comprises an improved isolation transformer designed to isolate zero-sequence current from either a primary or secondary winding in a transformer or pass the zero-sequence current from a primary to a secondary winding.

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 relates to an automobile double-clutch automatic speed changer hardware-in-the-loop simulation test bed; a host machine establishes a digital simulation mathematical model of multiple working conditions of the automobile and converts the digital simulation mathematical model into a C code format, the C code format is received and downloaded to a CPU by a target machine through an Ethernet, an electric control unit controls an executive motor of the two clutches and the executive motor of a synchronizer, and the displacement of the clutch is received through a PCL board card in order to control the operation of the digital simulation model of various working conditions of the automobile stored in the target machine and the information fed back by the target machine. The invention has the advantages of realizing the hardware-in-the-loop of a TCU and an actuator, the more accurate prediction results of various control parameters, optimizing the control parameters of extremely dangerous situations in the prophase of research and development of a DCT electronic control system, simplifying the test environment, and the tested various performances and gained optimization parameters closer to the real vehicle test.

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.

A system and method for efficiently and effectively simulating hardware-in-the-loop testing of a wireless communications network. The system and method employs an optical matrix-vector multiplier (MVM) for performing optical signal processing to simulate radio frequency (RF) signal propagation characteristics in a mobile wireless communications network. Specifically, the system and method employs an optical modulator, which is adapted to modulate optical energy with signal energy, such as radio frequency (RF) signal energy, propagating from a first group of transceivers of the network to form a vector of optical signals. The optical matrix-vector multiplier (MVM) receives the vector of optical signals, and has a matrix of optical channel weights which are modifiable in accordance with desired parameters to represent at least on parameter of the wireless network. The optical MVM is further adapted to output signals based on the received vector of optical signals and the optical channel weights. The system and method further employs a detector device, adapted to detect the output signals and to provide the output signals as an output vector of signals to a second group of transceivers of the network.

The invention discloses a hardware-in-the-loop test system for a whole vehicle controller for an electric vehicle and a test method. The hardware-in-the-loop test system comprises a whole electric vehicle controller, a fault injection hardware unit, an SCALEXIO, and a vehicle simulating module, a vehicle driving animation simulating module and a vehicle state operating and monitoring module in a computer. Connection and communication among the SCALEXIO, the fault injection hardware unit and the whole electric vehicle controller is achieved through a wire harness, and connection and communication between the SCALEXIO and the computer is achieved through a network line; through the corresponding SCALEXIO software in the computer, SCALEXIO channel selection is achieved, and communications of a vehicle simulating model, vehicle driving animation and vehicle state operation and monitoring interact in the computer. The hardware-in-the-loop test system can effectively save the development time and reduce the development cost of the whole vehicle controller, can achieve performance testing on the whole vehicle controller under the limit driving condition of the vehicle, can achieve systematic, integrated and automatic testing on the whole vehicle controller and generate a test report, effectively reduces the testing cost and improves the testing efficiency.

Methods and apparatus are provided for managing test procedures for a hardware-in-the-loop (HIL) simulation environment. The apparatus comprises an input interface for receiving input from a user, a first processor coupled to the input interface and in operable communication with the HIL simulation environment. The first processor is configured to generate a test sequence comprising a plurality of test procedure references based on input from the user, wherein each test procedure reference corresponds to a test procedure that comprises instructions for issuing commands to, and receiving data from, the HIL simulation environment, and sequentially execute each referenced test procedure within the generated test sequence in cooperation with the HIL simulation environment, in response to a command from the user.

The invention relates to an automotive anti-lock braking and braking energy feedback integration control hardware-in-the-loop test bed, which comprises a front braking gas path, a rear braking gas path, and a braking control unit, wherein the front braking gas path comprises a gas source, a gas storage cylinder and a front braking feedback regulation valve which are orderly and serially connected, and a gas outlet end of the front braking feedback regulation valve is connected with two gas paths which consist of a front ABS electromagnetic valve, a front braking gas chamber and a front brake respectively and are serially connected; the rear braking gas path comprises a gas source, a gas storage cylinder and a rear braking feedback regulation valve which are orderly and serially connected, and a gas outlet end of the rear braking feedback regulation valve is connected with two gas paths which consist of a rear ABS electromagnetic valve, a rear braking gas chamber and a rear brake respectively and are serially connected; and the braking control unit comprises pressure sensors, a wheel speed sensor, a host, an Autobox, a data acquisition and signal emission system connected with the Autobox, an electronic control unit and a bench. The test bed can simulate mixed-power commercial vehicles with air pressure braking systems, and perform braking control and research on the mixed-power commercial vehicles.

The invention provides a fault self-diagnosis system for an ABS/ESC and a HIL (Hardware-in-the-Loop) automation testing system thereof. The fault self-diagnosis system at least comprises a system basic hardware self-diagnosis module which carries out fault detection and diagnosis on basic hardware of the ABS/ESC, a CAN communication module which realizes CAN communication and fault detection processing, a fault detection and failure protection monitoring module which carries out monitoring analysis so as to determine each fault in the ABS/ESC and execute corresponding failure protection according to the fault, a fault diagnosis service module which is used for providing diagnosis service, an ABS/EBD function control module, a YSC function control module and a TCS function control module which are system function modules and are in charge of arbitrating and deciding a corresponding failure protection strategy when a system fault happens, and a fault warning module which is used for sending fault warning signals. The fault self-diagnosis system of the invention can carry out thorough fault self-diagnosis and failure protection on the ABS/ESC system, and due to the HIL (Hardware-in-the-Loop) testing system, full automation integrated verification test on the ABS/ESC fault self-diagnosis system can be realized.

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 relates to a detecting system and method for virtual synchronous generator grid connection based on hardware-in-the-loop simulation. The detecting system comprises the following sequentially connected parts: an upper computer, a lower computer simulator, an I/O module, a controller for a virtual synchronous generator to be tested and a digital waveform recorder. The detecting system for virtual synchronous generator grid connection based on hardware-in-the-loop simulation can provide system modeling and simulation for various types of virtual synchronous generators and different types of energy storage units, photovoltaic power generation units and wind turbines of the generators. As a new detecting method for grid connection performance of a power generation unit of a virtual synchronous generator, the detecting method can perform system-level hardware-in-the-loop simulation detection on the basis of completing the mathematical modeling for the virtual synchronous generator to be tested, the integration level is high, and the detecting requirement for grid connection performance of virtual synchronous generators of different voltage levels in the market can be met.

The invention discloses a method for synchronous acquisition, storage and playback of vehicle-mounted video and bus data. The method is used for development and tests of a vehicle-road cooperative system. The method can be used for synchronous acquisition of information of driving states of a tested vehicle in various working conditions and information of road transportation environments. Starting conditions for triggering data acquisition can be set by a testing person. After a test, recorded data can be led in and played back synchronously, and a test scene can reappear. The recorded data can be used for controlling development and debugging of an algorithm and a hardware in-loop test of a controller so as to ensure conformity and repeatability of the test scene, reduce workload of an actual vehicle test, shorten a developing cycle, and save developing cost.

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 application discloses a Hardware In The Loop (HITL) simulation system and a communication method therefor. The HITL simulation system includes a PC machine, a first entity physical layer device, a second entity physical layer device, and an HITL simulation interface. The PC machine comprises a virtual network simulation environment. The first entity physical layer device and the second entity physical layer device are connected with the virtual network simulation environment through the HITL simulation interface. The protocol conversion between virtual data packages sent by the PC machine and entity data packages sent by the first entity physical layer device and the second entity physical layer device is realized through the HITL simulation interface, so that the bi-directional information interaction between a network simulation system and the entity physical layer devices is realized. Ad hoc network functions of the sending, reception, and relay forwarding of terminal nodes are realized through a bi-physical layer model of mapping nodes. The entity physical layer devices, used as the terminal nodes, can participate in a network self-organization process, and satisfy an HITL simulation demand of the ad hoc network.

The invention discloses an electric bus composite braking hardware-in-the-loop test platform and method based on an electronic-controlled braking system. The test platform is composed of a gas-generating component, the electronic-controlled braking system, a traditional barking component, a wheel speed simulation component, a single chip microcomputer controller, an upper computer and a target machine. The hardware-in-the-loop test platform takes a third generation electronic-controlled braking system of the WABCO company as a basis and combines related hardware and software, so that precise adjustment of braking pressure of front and rear axles and four wheels is achieved, and the control problem of normal braking and emergency braking of an electric bus is solved through a regenerative braking control strategy and an ABS control strategy; by means of the test platform and method, combined testing of the electronic-controlled braking system and a regenerative braking system of the electric bus is achieved.

The invention discloses a teaching scientific-research experiment platform for a hardware-in-the-loop intelligent track and belongs to the technical field of mechanical electrical integration . In the invention, a supervisory computer software module in a computer is used for analyzing and processing status information of the track and gives control instructions to the track. The computer exchanges data with a communication system through a computer communication interface. The supervisory computer software module analyzes and extracts the status information of the track after receiving the status data frames of the car, and synthesizes the control instructions to form control instruction data frames before the supervisory software module dispatches the control instruction data frames. An intelligent track system carries various sensors and motion execution units of a track model. The information acquired by the sensors is synthesized into status data frames of the track and dispatches the status data frames to the communication system. After the intelligent track system receives and analyzes the control instruction data frames from the communication system, the smart track system extracts effective control instruction information, and outputs the control signals of a motor and a control actuator to control the motor and the control acutator. The invention can be used for simulation and demonstration of scientific research experiments.

The invention discloses a scientific research teaching device based on a multi-rotor aircraft. The scientific research teaching device comprises a multi-rotor aircraft on which a sensor group is installed, a ground computer in which simulation software is installed, and a ground power supply, wherein the multi-rotor aircraft can realize the actions such as hovering, elevation, steering, flying front, back, left and right under the control of the ground computer; the ground power supply is used for supplying power to the aircraft constantly; and the ground control computer adopts an advanced computer language to realize the sensor information fusion and an aircraft control algorithm. The scientific research teaching device is strong in cruising ability and has the advantages of being strong in experiment design flexibility, diversified in algorithm design, based on a development environment and hardware-in-loop technique of an advanced PC (Personal Computer) and an advanced language, easy to handle, short in development period and the like; and the scientific research teaching device can be used in scientific research and teaching experiments of automatic control theories and aircraft navigation theories.