Webasto는 오픈카에 사용되는 하드탑 테스팅을 위해 HBM의 catman®AP를 사용하고 있습니다.
볼보 C70 컨버터블 자동차 운전자는 이런 기분을 즐길 수 있습니다: 버튼을 누르면 탑이 열리고 - 내리시면 됩니다.
To make sure that nothing goes wrong when retracting and deploying the technically demanding hardtop system, extensive tests were made already during its development. Webasto AG, sited in Stockdorf, Germany, an international automotive supplier and developer of the retractable hardtop for the Volvo C70 convertible, relies on test and measurement equipment from HBM for this purpose. They use HBM transducers, the MGCplus amplifier system, and innovative and easy-to-use catman®AP software for recording and processing measured values.
Typical measurement tasks were:
- Stiffness measurements (complete hardtop system and components)
- Natural frequency measurements and recording of road profiles (complete hardtop system and vehicle)
- Closing speeds
- Functional tests on hardtop system and components (voltages, currents, forces, pressures, torques, angles, displacements, etc.)
…and measurement of blocking forces. Blocking forces are measured to make sure that the components of the hardtop system tolerate blocking in any intermediate position without suffering damage or subsequent impairment of functionality. Furthermore, these tests provided a basis for comparison to the FEM calculations.To enable blocking forces to be measured as conveniently as possible, Webasto tested the C-segment drive in a component test stand the following transducers were used:
- Cylinder force: U3 HBM force transducer, 10kN
- Cylinder displacement
- Cylinder pressures on piston and rod side: P8AP HBM pressure transducer, 500bar
- Blocking force at the driven rod: U3 HBM force transducer, 2kN
The diagram shows an example of the measurement quantities of pressure and force, evaluated and visualized using catman®AP.
catman®AP software is easy to use and thus facilitates Webasto’s daily work. catman®AP’s sensor database, in particular, saves time and significantly reduces error rates when setting up the amplifier. The software’s flexibility also enables Webasto to quickly respond to new measurement tasks. The second field of applications in which Webasto uses catman®AP is analysis and documentation, where the filter and frequency analysis functions provided are especially useful.
