EARLY STAGE SYSTEM VERIFICATION

AUTHOR: Mr. Wuyin Hui
Control and Software Manager & CTO Assistant

We could foresee our products’ life -what an amazing systematic engineering!

GETEC runs for every new product a full processed development. Only if the product characteristics are meeting the product requirements, GETEC will announce the so called “system stands” status. At the beginning of a development, GETEC evaluates the engineering package with a process to judge whether the development can generate a reasonably close loop by cooperating with customer and supplier.

By this close loop target, a multi-dimensional map for the generation of requirements can be provided. This map shall contain at least two dimensions: the project phase and the development level.

The project phase can range from “concept” until the “final development package delivery” (the so called “project complete” status). The development level shall reach from system architecture definition until the detailed development disciplines for hardware, software and electronics.

GETEC classifies requirements into 3 groups:
1. Open functional requirement a product can provide to a vehicle
2. Open non-functional requirement a product shall fit into a vehicle
3. Known specified customer requirement – independent of requirement type

Requirements alignment is a first milestone. Passing this milestone GETEC starts the requirement development independently. GETEC has deep engineering experience on drivability and has multiple skills to link the engineering realization method to it. A deep benchmarking is applied to support a pre-validation of requirement setting and indication of market usage by comprehensive road load data (RLD). Deep insight could be provided by decipher the vehicle network (CAN, FlexRay or UDS) and by sensors.

This information contains the load mapping of how a driver in certain market could use the vehicle, such as transitions of powertrain states (driving mode change e.g. from EV to HEV mode) and adaptions of operation timing windows (the definition when to use which mode based on e.g. battery state of charge). In combination with non-functional requirements, such as target
market, policies & rules, NVH, cost target and package limitation the result is a full set of requirements. GETEC will develop based on this a pool of concepts including CAE calculations for its core elements’ key performance, such as e-motor map. GETECs’ excellent experience on control (from strategy mapping to detail actuator control) allows to apply the concepts to GETECs’ simulation platform. The concept pools’ result will be categorized as diverse abstraction model. Each category will be sent into GETECs’ simulation platform and stimulated by vRLD.

The result will be deeply analyzed via GETECs’ application and CAE expert team to ensure:
1. acceptable drivability of the system when applied to a vehicle
2. the provision of every system key element’s instant usage limitation or statistic usage profile

Every usage profile will be analyzed by CAE to provide the engineers a performance result of all elements.

The result leads the detailing of concept. All inputs are based on highly experienced analyzation of market / driver usage / drivability/ mature understanding of method of powertrain elements / advanced strategy prediction. With this accurate and reasonable input, all engineering force is arranged for the best solution and optimal result.

Engineering shall work for one target whereas keeping engineering work in one direction is a challenge everywhere in this industry. Therefore, GETEC merged different cultures in all departments and the result is a highly qualified engineering solution on a state-of-the-art level. GETEC provides high efficiency development, with deepest understanding of product requirements and characteristics.