Symtavision has helped BMW in verifying their new Active Front Steering System. System reliability was of utmost importance. SymTA/S helped meeting performance
requirements and optimizing the ECU.

See also the slides from EUROFORUM "SW im Automobil", 2007.

Automotive ECU suppliers building an Engine Control ECU must consider crank-shaft synchronous tasks and ISRs in combination with other RPM- and angle-dependent dynamic influences. SymTA/S helps verifying the correct timing and optimizing it over the entire RPM range, at the same time significantly reducing test and measurement time.

Chassis controller dead times and jitters have a significant influence on the quality and stability of the embedded control. Function and software developers have to guarantee that the final timing behavior does not exceed the required bounds.

SymTA/S supports designers throughout the whole software development by detecting and visualizing critical end-to-end timing situations, and by indicating the timing correctness of a given design variant.

FlexRay is often proposed as the simple way to eliminate timing problems by using deterministic frame timing. However, the actual signal timing depends on much more incl. the interaction of the bus schedule with the basic software and the ECU functions, resulting in complex end-to-end timing chains.

By analyzing key influences such as over- and under-sampling, synchronous and asynchronous ECUs, and signal jitter, SymTA/S ideally supports FlexRay network design.
 

An automotive manufacturer wants to extend the lifetime of its existing CAN-based design. However, a growing number of vehicle functions further increases traffic on an already loaded bus. SymTA/S helps optimizing for bandwidth utilization and responsiveness.

Event-triggered frames disturb cyclic CAN schedules in dynamic domains such as body and comfort electronics. The dynamic load is inherently non-deterministic, challenging CAN analysis and complicating CAN design, in which frames must meet deadlines and jitters must be in an acceptable range.

SymTA/S determines the static and dynamic CAN bus performance in various situations. The possibility to perform “what-if” analyses quickly, in combination with efficient dynamic load models, let SymTA/S users compare key timing parameters of frames in several dynamic load situations. SymTA/S users can safeguard and optimize CAN timing also in the presence of triggered or mixed frames.

Aerospace systems need to be both extremely reliable and costoptimal over the lifetime of an aircraft. A major challenge is the increasing complexity due to more electronic functions, a high degree of integration, new technologies and the planning of future extensions.

Wrong decisions early in the design can cost many millions and delay a program for months or years.

Timing Analysis predicts and verifies the performance of a system and finds problems caused by a lack of resources. Bottlenecks, risks and reserves are found early, enabling systematic optimization and early-warning of problems during development.

covering

• Symtavision Solutions for Complex Real-time Systems
• Products and Services for Automotive

and showcasing two Automotive application example

• Software Design for ECUs
• Network Dimensioning for CAN Buses and Gateways

beschreibt

• Symtavision Lösungen für komplexe Echtzeitsysteme
• Produkte und Services für Automotive

sowie zwei Applikations-Beispiele aus dem Automotive-Bereich

• Software-Entwicklung für Steuergeräte
• Netzwerk-Dimensionierung von CAN–Bussen und Gateways