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    • 5. 发明公开
    • METHOD FOR PERFORMING AN ACTIVE PROFILING OF A SOUND EMITTED BY AN ENGINE AND CORRESPONDING PROFILING SYSTEM
    • 程序积极分析的实现发动机辐射噪声及相应的系统PROFILING
    • EP3038102A1
    • 2016-06-29
    • EP15201755.4
    • 2015-12-21
    • Magneti Marelli S.p.A.
    • MARCELLI, AntonioARMENI, SaverioNESCI, Walter
    • G10K15/02F01N13/00
    • H04R29/00F01N1/065F01N9/00F01N9/005F01N2900/0412G10K15/02G10K2210/12822G10K2210/3025G10K2210/3032G10K2210/51H04R2499/13Y02T10/47
    • Described herein is a method for performing an active profiling of the sound emitted by a vehicle engine (11) that issues first acoustic waves (EW) along a primary path (13) of propagation of acoustic waves, in particular an exhaust duct,
      said method comprising:
      injecting (160), via an acoustic-wave diffuser (16), into a secondary propagation path (17) that merges in said primary path (13), second acoustic waves (MW), which are able to combine with said first acoustic waves (EW) in a merge point in said primary propagation path (13) and to generate (170) third resulting acoustic waves (RW); and
      generating (110, 120, 130, 140, 150) a driving signal (SP) for said diffuser (16) by regulating (110, 120, 130) the amplitude of harmonics of said driving signal (SP) as a function of reference acoustic waves (TW) and of a workpoint (WP) of the engine (11). This regulation operation (110, 120, 130) comprises calculating (110) equalization coefficients (α 1 , ..., α M ) to be applied to the amplitudes of said harmonics of said driving signal (SP) via a self-tuning procedure (200), which comprises comparing (260) said reference acoustic waves (TW) with a simulation (SRW) of said resulting waves (RW), said simulation (SRW) being obtained by applying (230) to a simulation (MSW) of the second acoustic waves (MW) a model (H) of the secondary propagation path (17).
    • 在所描述的是用于对由车辆发动机发出的声音的活性分析的方法(11),并沿着弹性波的传播的主路径(13)的问题的第一声波(EW),导管特别用尽,所述方法 包括:通过注射(160)在弹性波散射(16)转换成次级传播路径(17)的确在所述主路径合并(13),第二声波(MW),其能够与所述第一结合 声波(EW)在所述主传播路径的合并点(13)和产生器(170)所得到的第三声波(RW); 以及生成(110,120,130,140,150)通过调节(110,120,130)。所述的高次谐波的振幅驱动信号(SP)作为参考的函数的驱动信号(SP),用于所述扩散器(16) 声波(TW)和发动机(11)的工作点(WP)的。 这种调节手术(110,120,130)包括:计算(110)的均衡系数(±1,...,±M)将被施加到所述的谐波的幅值经由自调谐过程驱动信号(SP) (200),其包括比较(260)所述参考声波(TW)与所述得到的波(RW),所述仿真(SRW)的模拟(SRW)通过施加(230)到的模拟(MSW)而获得 第二声波二次传播路径(17)的(MW)的模型(H)。
    • 6. 发明公开
    • METHOD FOR RECOGNIZING THE DRIVING STYLE OF A DRIVER OF A LAND VEHICLE, AND CORRESPONDING APPARATUS
    • EP3498559A1
    • 2019-06-19
    • EP18210037.0
    • 2018-12-04
    • Magneti Marelli S.p.A.
    • ARMENI, SaverioNESCI, WalterD'AMATO, AntonioPIANESE, CesareARSIE, Ivan
    • B60W40/09B60W50/00
    • Described herein is a method for recognizing the driving style of a driver of a land vehicle, of the type that envisages acquiring (110) information (DI) on the dynamics of the vehicle from sensors and calculating, as a function of said information on the dynamics of the vehicle, a class of membership of the driving style ( stl ) of the driver.
      The method comprises:
      - analysing said information (DI) on the dynamics of the vehicle in order to identify start of an event of recognition of a manoeuvre (mvr) and to start (cmd) a procedure of recognition (30) of the event that comprises:
      - reconstructing (140) a manoeuvre (mvr) performed by the driver by computing components of displacement of the vehicle ( X g ( t ), Y g ( t )) as a function of the information on the dynamics of the vehicle (DI) arranged in a displacement time series ( mvr x , mvr y ) that represents a reconstruction of said manoeuvre ( mvr ) ;
      - identifying (140) the manoeuvre performed ( mvr ), by comparing said displacement time series ( mvr x , mvr y ) with models (tp) of time series corresponding to pre-determined manoeuvres stored in a database, in particular by applying a Dynamic-Time-Warping procedure;
      - defining (210) regions in a cartesian plane having as axes a lateral acceleration ( a lat ) and a longitudinal acceleration ( a long ), in particular manifolds (S1, S2, S3);
      - computing (220) cost functionals ( J cmft , J nrm , J sprt ) for the three driving styles, which calculate a distance between points defined by values of acceleration in said cartesian plane of said manoeuvre ( mvr ) and the boundary of each of the three manifolds (S1, S2, S3); and
      - recognising (230) the driving style ( stl ), on the basis of said cost functionals.