En

Developing innovative solutions effectively

“Schmidhauser AG is a member of the Lenze Group and a competence center for customer-specific drive controllers. With 55 employees at the headquarters in Romanshorn, Switzerland, the company provides a diverse range of services in product development (hardware, software, and power electronics). At the end of 2006, Schmidhauser decided to develop its mobile drive controllers for vehicles with the Embedded UML Studio from Willert Software Tools. The tool is based on Rational Rhapsody® and is focused on target platforms with small memory Footprints. The main factors driving the decision were the high quality requirements that must be met by safety-relevant components of Schmidhauser. “

Model Driven Development with Rational Rhapsody® in C – drive controllers for vehicles

Details

The development of safety-relevant components to meet stringent quality requirements is demanding. Schmidhauser AG meets this challenge successfully with Model Driven Development and Rational Rhapsody® from IBM. A conversation with Peter Bode, Project Manager for Mobile Drives.

Related products

IBM Rational Rhapsody

Responding better to customer needs

For Peter Bode, only Rhapsody® was under consideration from the beginning – especially because of its leading options for modelling and full automatic code generation. “Often we are confronted with the situation that product requirements have not yet been completely defined at the beginning of the project. With Rhapsody®, we can represent new functionalities graphically and present various possibilities for a solution to our customers. This allows us to respond flexibly and address needs much better.”

Success-critical advantages

“Many of the products we develop must meet extremely stringent requirements in terms of quality and electromagnetic compatibility. In addition to the advantages already mentioned, significantly better product quality is therefore a critical success factor for us.” Other advantages cited by Peter Bode are

  • significantly higher efficiency
  • easy training for new employees
  • simpler software maintenance
  • better consistency when changes are made and
  • the fact that the documentation, model, and code are always at the latest level.

Accompanied project start-up

To be able to work efficiently in a short amount of time, three employees attended a relevant tool training session before Rhapsody® was introduced. A coach ensured seamless tool integration into existing infrastructures on site. The first development project was completed within nine months: two auxiliary unit inverters for the EvoBus Citaro Diesel Hybrid Bus. Currently there are three products developed with Rhapsody® on the market.

Lessons learned

On-site support coordinated by EVOCEAN was important for ensuring an efficient start. “The five-day Embedded UML Studio start-up training was also worth its weight in gold,” adds Peter Bode. “I would recommend Rhapsody® at any time. Today we are able to concentrate on the actual problem of an application. We are today significantly more efficient than in projects in which we’re not yet using Rhapsody®.”

Looking ahead

Something Peter Bode would like in the future is an integrated solution for “Performance Testing” in the embedded software on the target platform. The next goal is for additional savings in time and money. “So far we have invested primarily in improving quality. Now we would like to improve our time to market and reduce costs by about 30%. I’m convinced that we’re on the right path with Rhapsody®.”

Used technologies

Before Project

UML

Viso

IDE

Tasking/Keil

RTOS

Internal Development

Target Processor

ST 10 / DSP TI F28xx

Debugger

Hitex

After Project

UML

Embedded UML Studio - Rhapsody

IDE

Tasking/Keil

RTOS

Embedded OO-RTX

Target Processor

ST 10 / DSP TI F28xx

Debugger

Hitex / PLS UDE

Used technologies

Before Project After Project
UML Viso Embedded UML Studio - Rhapsody
IDE Tasking/Keil Tasking/Keil
RTOS Internal Development Embedded OO-RTX
Target Processor ST 10 / DSP TI F28xx ST 10 / DSP TI F28xx
Debugger Hitex Hitex / PLS UDE

Customers about our services

Schmidhauser AG

"A picture is worth a thousand words. Thanks to Rational Rhapsody® models, we can discuss new functionalities much better with our customers – even without knowledge of the code."

Peter Bode

Project Manager Mobile Drives