Electronic monitoring device for a torque generator coupled to a load-constituting machine, and process for determining the torque and for testing the torque generator

Abstract

Abstract A torque generator, e.g. a vehicle motor on a test bed, which torque generator is coupled to a load-constituting machine, is subjected to natural vibrations which affect its difficult-to-measure internal moment. To test the torque generator, an electronic model of the vibratory test bed is used which requires the internal moment of the load-constituting machine and a value for the internal moment of the torque generator. This torque-generator moment MV' is sensed at a controller REG whose desired value is the measured shaft moment or the measured torque-generator speed and whose corresponding actual value is supplied by the electronic model. The model advantageously contains a static model Stat' which calculates a static shaft moment value MZ' for the steady state of the elastic vibration and a dynamic model Dyn' which supplies the simulated values of the shaft moment MW' or the speed nV'. Via a frequency identification IDF from the shaft-moment actual value MW, its natural frequency omega for balancing the dynamic model as well as a frequency-dependent dephased damping signal E can advantageously be formed. Elastic natural vibrations of the test bed can thereby be dampened, and the torque generator can be tested under realistic conditions, including elastic natural vibrations occurring in actual operation. <IMAGE>

Inventors

• 👤 Felix Dr. Blaschke

Bibliographic Details