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US 10,650,176 B2Granted
Driveline modeller
AssigneeRomax Technology Limited
InventorBarry James
Life of this patent
Estimating the term…
Abstract
A method of computer aided engineering for designing a driveline comprises the steps of: creating a single parametric description of the driveline; analysing the parametric description for performance using one or more failure modes; and optimising performance by amending the parametric description and repeating the analysing step.
Claims20
A method of computer aided engineering for producing a design for a driveline of a vehicle, the method comprising the steps of:
- a) providing a parametric description of the driveline design as a single common source of data for a plurality of failure mode analyses of one or more components of the driveline in which the parametric description comprises data sets relating to form, function, properties and operating conditions of the driveline or components thereof, wherein the driveline comprises an electric motor/generator and a gearbox that are defined as a single system, and wherein the driveline transmits power to enable the vehicle to be driven;
- b) receiving a user selection of a failure mode of a component of the driveline, the failure mode providing an indication that the driveline has not met a performance target of the vehicle;
- c) selecting data from the data sets of the parametric description appropriate to a complexity of analysis of the selected failure mode indicating that the driveline has not met the performance target of the vehicle;
- d) analysing the selected data to obtain performance information of the driveline;
- e) providing the user with the performance information;
- f) repeating steps b) to e) for at least one further user-selected failure mode to obtain the performance information of the driveline from the plurality of failure mode component analyses wherein selecting data for the at least one further user-selected failure mode analyses comprises selecting data from different data sets than those data sets from which data is selected for the selected failure mode;
- g) receiving a modification of the design from the user;
- h) updating the parametric description and repeating steps c) to e);
- and
- i) repeating steps g) and h) until the design meets the performance target,
- wherein the step d) comprises deriving one or more mathematical models from the parametric description, whereby data used to derive a mathematical model of the one or more mathematical models for the plurality of failure mode analyses is derived from the single common source of data,
- wherein the mathematical model is a dynamic model of an electro-mechanical driveline and is excited by more than one of the following sources:
- (i) transmission error from gears;
- (ii) torque ripple from the electric motor/generator;
- (iii) radial electro-mechanical loads from the electric motor/generator.
12 more elements
A non-transitory computer readable storage medium encoded with instructions that, when executed by a processor, cause the processor to perform a method of computer aided engineering for producing a design for a driveline of a vehicle, comprising the steps of:
- a) providing a parametric description of the driveline design as a single common source of data for a plurality of failure mode analyses of one or more components of the driveline in which the parametric description comprises data sets relating to form, function, properties and operating conditions of the driveline or components thereof, wherein the driveline comprises an electric motor/generator and a gearbox that are defined as a single system, and wherein the driveline transmits power to enable the vehicle to be driven;
- b) receiving a user selection of a failure mode of a component of the driveline, the failure mode providing an indication that the driveline has not met a performance target of the vehicle;
- c) selecting data from the data sets of the parametric description appropriate to a complexity of analysis of the selected failure mode indicating that the driveline has not met the performance target of the vehicle;
- d) analysing the selected data to obtain performance information of the driveline;
- e) providing the user with the performance information;
- and
- f) repeating steps b) to e) for at least one further user-selected failure mode to obtain the performance information of the driveline from the plurality of failure mode component analyses,
- wherein selecting data for the at least one further user-selected failure mode analyses comprises selecting data from different data sets than those data sets from which data is selected for the selected failure mode,
- wherein the step of analysing includes using a mathematical model which is a dynamic model of an electro-mechanical driveline and is excited by more than one of following the sources:
- (i) transmission error from gears;
- (ii) torque ripple from the electric motor/generator;
- (iii) radial electro-mechanical loads from the electric motor/generator.
9 more elements
A method of computer aided engineering for producing a design for a driveline of a vehicle, the method comprising the steps of:
- a) providing a parametric description of the driveline design as a single common source of data for a plurality of failure mode analyses of one or more components of the driveline in which the parametric description comprises data sets relating to form, function, properties and operating conditions of the driveline or components thereof, wherein the driveline comprises an electric motor/generator and a gearbox that are defined as a single system, and wherein the driveline transmits power to enable the vehicle to be driven;
- b) receiving a user selection of a failure mode of a component of the driveline, the failure mode providing an indication that the driveline has not met a performance target of the vehicle;
- c) selecting data from the data sets of the parametric description appropriate to a complexity of analysis of the selected failure mode indicating that the driveline has not met the performance target of the vehicle;
- d) analysing the selected data to obtain performance information of the driveline;
- e) providing the user with the performance information;
- and
- f) repeating steps b) to e) for at least one further user-selected failure mode to obtain the performance information of the driveline from the plurality of failure mode component analyses wherein selecting data for the at least one further user-selected failure mode analyses comprises selecting data from different data sets than those data sets from which data is selected for the selected failure mode,
- wherein the step of analysing includes using a mathematical model which is a dynamic model of an electro-mechanical driveline and is excited by more than one of the following sources:
- (i) transmission error from gears;
- (ii) torque ripple from the electric motor/generator;
- (iii) radial electro-mechanical loads from the electric motor/generator.
8 more elements
Dependencies are inferred from the claim text.