Search Results

Supplier said customizable traction-motor approach can optimize projects for preferred outcomes in range, cost and sustainability.

Model Enables More Standards to be Converted to Digital

Abstract To address the torsional vibration caused by impact conditions in electric vehicles (EVs), such as deceleration belts and road irregularities, a comprehensive electromechanical coupling dynamics model is developed. This model includes the dynamic behavior of the permanent magnet synchronous motor (PMSM) and the gear transmission system in the EV’s electric drive system. The study aims to investigate the electromechanical coupling dynamics and vibration characteristics of the system under impact conditions. Based on this, an innovative active damping control strategy is proposed for the EV’s electric drive system when subjected to impact conditions. This strategy incorporates active disturbance rejection current compensation (ADRCC) to achieve a speed difference of zero at two ends of the half-shaft as the tracking control target, and compensating current is superimposed on the original given current of the motor controller.

These general operator precautions apply to off-road work machines as defined in SAE J1116, and Agricultural Tractors as defined in ANSI/ASAE S390, Nov 2004. These should not be considered as all-inclusive for all specific uses and unique features of each particular machine. Other more specific operator precautions not mentioned herein should be covered by users of this recommended practice for each particular machine application.

This SAE Aerospace Information Report (AIR) supplements ARP4754B by identifying the crucial elements to be considered when constructing the development assurance plans described in Chapter 3 (Development Planning) of ARP4754B for integrated systems. This AIR presents a collection of lessons learned from past certification programs involving integrated systems. This AIR is not guidance for system integration technologies.