HBM's PMX industrial amplifier system enables the automotive industry to carry out engine tests much more efficiently. Two of the main advantages of the PMX are its immunity to the noise encountered in industrial environments, and the precision it brings to process control.
The aim is to continually improve the performance of today's and tomorrow's engines, so that they can meet future energy efficiency standards, and also to enable major innovations to increase the quality of testing and manufacturing. HBM Test and Measurement has designed the PMX measurement system for this purpose, a precise, noise-insensitive measurement platform for test benches to improve engine efficiency.
New filtering and scaling options for the torque measurement range enable the system to be used precisely over part of the measurement range. The torque transducer can be scaled in the PMX using two procedures: either using the polynomial characteristic, a highly accurate method, or using the characteristic table, with automatic detection of the direction of rotation.
HBM has integrated a CASMA (Crank Angle Synchron Moving Average) filter into the PMX with a sliding average calculated according to the angle of rotation. This new-generation filter makes it possible, for example, to calculate the moving average as a function of crankshaft angle, in order to determine the torque distribution across cylinders.
The PMX generates characteristic quantities such as power, mean value and peak value in real time, and even performs torque regulation using a PID controller. Combined with HBM's high-performance torque transducers, the PMX amplifier measurement system and its open communication interfaces enable efficient test procedures in the automotive sector.
Learn more: www.hbm.com/fr