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    • 4. 发明专利
    • Driveline Modeller
    • GB2566368A
    • 2019-03-13
    • GB201814779
    • 2018-09-11
    • ROMAX TECH LIMITED
    • BARRY JAMESGEORGE GRANTJAMES DAYSHARAD JAINANNABEL SHAHAJKATHRYN TAYLOR
    • G06F17/50
    • A parametric description of the driveline is used to create a thermal model of the Driveline, allowing calculating a heat distribution for one or more components of the driveline and determination of a resulting deflection of component. A driveline performance metric calculated based on the determined deflection of the one or more components can then be made. A structural meshed model may be used to determine the thermal deflection, which may then be used to recalculate the thermal model, and a loop-end condition used to determine whether to update the parameters in the model. As a result, a performance metric such as efficiency can be calculated. Fluid temperature associated with the driveline may be input from a sensor, a drive cycle for different environmental conditions, and the thermal model calculate power loss for the components and operating misalignment (gear and bearing stress, fatigue, scuffing (using lubricant temperature), stiffness, planetary gear load sharing, calculated due to transmission error, torque ripple and stator radial forces) calculated.
    • 9. 发明专利
    • Planetary gearset
    • GB2550986A
    • 2017-12-06
    • GB201617550
    • 2016-10-17
    • ROMAX TECH LIMITED
    • BARRY JAMESMICHAEL PLATTENSHARAD JAINKATHRYN TAYLORCHRISTOPHER HALSEMAIK HOPPERT
    • G06F17/50
    • A method for designing a planetary gearset meeting one or more design targets, comprising the steps of specifying a size and ratio of the gearset, specifying a number of planets, calculating all valid combinations of tooth numbers and planet numbers that satisfy one or more constraints, selecting a starting combination, calculating a value for a design target for the gearset and modifying one or more macro-geometry parameters. The macro-geometry parameters are chosen so that the positive effects of one parameter on the design target counteract any negative effects of another macro-geometry parameter. This method produces a planetary gearset meeting one or more design targets. The design target may be for bending strength wherein the last step comprises calculating bending strengths for the gear teeth and comparing with the target design, modifying the macro-geometry parameters when outside of the design target. The macro-geometry parameters may relate to the module and comprise reducing power loss by reducing contact length between two meshing teeth and increasing bending strength by increasing either one of the pressure angle, helix angle, face width or centre distance. The method can be implemented on a computer system as part of a computer-aided engineering system.