Patent classifications
G01M17/06
COMPUTER-AIDED METHOD AND DEVICE FOR PREDICTING SPEEDS FOR VEHICLES ON THE BASIS OF PROBABILITY
The invention relates to a computer-aided method for generating a drive cycle for a vehicle which is suitable for simulating a driving operation, in particular a real driving operation. The computer-aided method comprises establishing a state vector of the drive cycle for a current time interval from a past speed curve, providing an acceleration prediction model, determining an acceleration value in consideration of probabilities resulting from the acceleration prediction model and the state vector, integrating the determined acceleration value over the current time interval in order to obtain a predicted speed value for a next future time interval, and appending the predicted speed value to the past speed curve in order to generate the drive cycle. Furthermore, the invention relates to a device for generating a drive cycle for a vehicle which is suitable for simulating a driving operation, in particular a real driving operation, and means for establishing a state vector of the drive cycle for a current time interval from a past speed curve, means for determining an acceleration value in consideration of probabilities resulting from the acceleration prediction model and the state vector, means for integrating the determined acceleration value over the current time interval in order to obtain a predicted speed value for a next future time interval, and means for appending the predicted speed value to the past speed curve in order to generate the drive cycle.
COMPUTER-AIDED METHOD AND DEVICE FOR PREDICTING SPEEDS FOR VEHICLES ON THE BASIS OF PROBABILITY
The invention relates to a computer-aided method for generating a drive cycle for a vehicle which is suitable for simulating a driving operation, in particular a real driving operation. The computer-aided method comprises establishing a state vector of the drive cycle for a current time interval from a past speed curve, providing an acceleration prediction model, determining an acceleration value in consideration of probabilities resulting from the acceleration prediction model and the state vector, integrating the determined acceleration value over the current time interval in order to obtain a predicted speed value for a next future time interval, and appending the predicted speed value to the past speed curve in order to generate the drive cycle. Furthermore, the invention relates to a device for generating a drive cycle for a vehicle which is suitable for simulating a driving operation, in particular a real driving operation, and means for establishing a state vector of the drive cycle for a current time interval from a past speed curve, means for determining an acceleration value in consideration of probabilities resulting from the acceleration prediction model and the state vector, means for integrating the determined acceleration value over the current time interval in order to obtain a predicted speed value for a next future time interval, and means for appending the predicted speed value to the past speed curve in order to generate the drive cycle.
MULTI-DEGREE-OF-FREEDOM IMPEDANCE FIXTURE FOR AUTOMATED FREQUENCY RESPONSE FUNCTION MEASUREMENTS
System and methods for characterizing a response of a structure-under-test to applied excitation forces using a test fixture. The fixture is selectively coupleable to the structure-under-test and is configured to hold the structure-under-test at a known position and in a known orientation relative to the fixture. A plurality of excitation devices and response sensors are coupled to the fixture. Excitation forces applied to the fixture by the excitation devices are conveyed by the fixture to the structure-under-test and each response sensor measures a dynamic response indicative of a response of the structure-under-test and the fixture to the applied excitation force. A controller receives response sensor data and applies a mathematical coordinate transformation to project the forces and moments corresponding to the applied excitation and the measured dynamic responses to a target point of the structure-under-test and to calculate a system response function based at least in part on the projection.
MULTI-DEGREE-OF-FREEDOM IMPEDANCE FIXTURE FOR AUTOMATED FREQUENCY RESPONSE FUNCTION MEASUREMENTS
System and methods for characterizing a response of a structure-under-test to applied excitation forces using a test fixture. The fixture is selectively coupleable to the structure-under-test and is configured to hold the structure-under-test at a known position and in a known orientation relative to the fixture. A plurality of excitation devices and response sensors are coupled to the fixture. Excitation forces applied to the fixture by the excitation devices are conveyed by the fixture to the structure-under-test and each response sensor measures a dynamic response indicative of a response of the structure-under-test and the fixture to the applied excitation force. A controller receives response sensor data and applies a mathematical coordinate transformation to project the forces and moments corresponding to the applied excitation and the measured dynamic responses to a target point of the structure-under-test and to calculate a system response function based at least in part on the projection.
SYSTEM FOR MEASURING REAL-TIME AERODYNAMIC DRAG
The invention relates to a system for measuring real-time aerodynamic drag of a moving vehicle, for example, a bicycle and rider. The system comprises a processor and a non-transitory computer medium for storing data. Further, it comprises a single, compact, multi-port measurement system (MPMS) comprised of at least two differential pressure sensors electrically connected to the processor and the non-transitory computer-readable medium, wherein the processor is configured to convert a first differential air pressure from a first sensor to a wind speed, and to convert a second differential air pressure from a second sensor to a wind direction. The system further comprises a plurality of sensors for detecting forces, including barometric pressure, air temperature and relative humidity, distance, and speed, surrounding the moving vehicle. The plurality of sensors are electrically connected to the processor and the non-transitory computer-readable medium, and also store data.
System and method for inspecting vehicle pull
A system for inspecting vehicle pull of a vehicle includes: a sensor monitoring device that collects information for vehicle pull inspection from a sensor installed in the vehicle; a travel path measurement device that measures a travel path of the vehicle in a vehicle pull measurement section; and a vehicle pull analysis device that determines whether the vehicle passes the vehicle pull inspection, based on the sensing information collected from the sensor monitoring device and travel path measurement information collected from the travel path measurement device.
System and method for inspecting vehicle pull
A system for inspecting vehicle pull of a vehicle includes: a sensor monitoring device that collects information for vehicle pull inspection from a sensor installed in the vehicle; a travel path measurement device that measures a travel path of the vehicle in a vehicle pull measurement section; and a vehicle pull analysis device that determines whether the vehicle passes the vehicle pull inspection, based on the sensing information collected from the sensor monitoring device and travel path measurement information collected from the travel path measurement device.
Vehicle wheel alignment measurement system camera and ADAS calibration support structure
A support structure having a vertical element supporting a set of cameras associated with a vehicle measurement or inspection system together with at least one target structure required for realignment or recalibration of onboard vehicle safety system sensors. A camera crossbeam carried by the support structure locates the set of cameras as required to view a vehicle undergoing measurement or inspection. The target structure is affixed to the vertical element of the support structure, at an elevation suitable for observation by at least one vehicle onboard sensors during a realignment or recalibration procedure. A set of rollers facilitates positioning of the target structure on a supporting floor surface during a realignment or recalibration procedure.
Vehicle wheel alignment measurement system camera and ADAS calibration support structure
A support structure having a vertical element supporting a set of cameras associated with a vehicle measurement or inspection system together with at least one target structure required for realignment or recalibration of onboard vehicle safety system sensors. A camera crossbeam carried by the support structure locates the set of cameras as required to view a vehicle undergoing measurement or inspection. The target structure is affixed to the vertical element of the support structure, at an elevation suitable for observation by at least one vehicle onboard sensors during a realignment or recalibration procedure. A set of rollers facilitates positioning of the target structure on a supporting floor surface during a realignment or recalibration procedure.
VEHICLE POWER STEERING TEST SYSTEM CONTROL
In an exemplary embodiment, a test system is provided for testing a power steering system for a vehicle, the test system including a motor, one or more sensors, and a processor. The one or more sensors are configured to obtain sensor data pertaining to the motor. The processor is coupled to the one or more sensors and to the motor, and is configured to: determine, using the sensor data, a desired position of the motor for providing a desired amount of torque to the power steering system in order to reach one or more target behaviors: an inertia target, a spring target, a damper target, or a friction target for the power steering system; and provide instructions for the motor to move to the desired position for providing torque to the power steering system.