Emotors adopts Siemens’ Simcenter solutions

Headquartered in Carrires-sous-Poissy, France and formed in 2018 as a joint venture between Stellantis and Nidec Leroy-Somer, Emotors is an independent e-drive manufacturer. Emotors has created a series of next-generation electric drive (e-drives) units for Stellantis brands like Peugeot, Opel, DS Automobile and Jeep.

A key part of our knowledge is not just about good development being able to design and prototype next-generation e-drives for our EV customers, but also manufacturing them en masse. This is where platform development, a very well-known strategy in automotive, helps us be competitive, said Cdric Plasse, CTO of Emotors. We design many things digitally but cannot do everything with just our digital models. To be quick-to-market and accurate, we need to calibrate our models with test measurement data. Our NVH test engineers benchmarked all the tools on the market, and it appeared quite quickly that the Siemens tools were the best.

One of Emotors many challenges is meeting stringent and changing customer specifications -- especially in Noise Vibration Harshness (NVH) acoustic when tailoring a whole new range of sounds for EVs, electric drivetrains and e-drives. These include customized interior and exterior soundscapes, enhanced silent driving experiences, and pedestrian warning systems (PWS) or acoustic vehicle alerting systems (AVAS).

To meet these challenges, Emotors is using a range of solutions from Siemens, including Simcenter Testlab software for test-based engineering, combining high-speed data acquisition with integrated testing, analytics and modelling tools, Simcenter SCADAS hardware which provides a broad range of test data acquisition solutions for multi-physics measurement for acoustic, vibration, and durability engineering. Emotors is also making use of a comprehensive suite of innovative sound and vibration excitation systems designed to measure driving points and structural and vibroacoustic frequency response functions.

To meet our customers NVH requirements, we perform classic experimental modal analysis in Simcenter Testlab. We extract modal parameters, like frequency, modal shape, and damping. And provide this information to the simulation team to confidently predict the NVH behaviour of our Emotors products. The Simcenter testing solution easily takes us through the main tasks, step-by-step, from the channel setup to final measurement analysis, explains Bonaventure Ndong Gumedzoe, NVH testing manager at Emotors.