The images below are an experimental setup being fabricated to verify that two-scale command shaping (TSCS) mitigates noise, vibration, and harshness (NVH) issues during internal combustion engine (ICE) restart. The setup consists of a 23.4 HP Kohler three-cylinder diesel ICE coupled to a GVM210 permanent magnet AC electric machine (EM) produced by Parker. A Sevcon inverter is used to control the EM. The EM of the setup is coupled through a spur gear coupling to the ICE with the output shafts mounted with self-aligning pillow block bearings, which is shown in the second image.
The angular velocity oscillations within the powertrain are measured with an incremental magnetic encoder produced by RLS; whereas, oscillations of the setup are measured with a Polytec Portable Digital Vibrometer. In addition to validating TSCS, the experimental setup can be used to explore the efficacy of the RLS and EKF parameter estimation techniques in determining fundamental ICE parameters.