METHOD AND DEVICE FOR PNEUMATICALLY DRIVING A TURBOCHARGER ROTOR IN A BALANCING MACHINE

摘要

In the method the drive power of a drive nozzle (2) is regulated by means of a stored program control device (24) with an adjustable internal regulator (25) as a function of the rotational speed of a turbocharger rotor (1) which is sensed by a rotational speed sensor (26). Parameters which are necessary for the regulating process are determined empirically by an adjustment run by adjusting the regulator (25) to a proportional behaviour with a high level of amplification Kp and by inputting the balancing rate of rotational speed as a setpoint value for the regulator (25) and monitoring and comparing the actual rotational speed with the setpoint value. If the actual rotational speed exceeds the setpoint value which has been set halving of the amplification Kp of the regulator (25) and repetition of the run until the actual rotational speed is below the setpoint value which has been set. Then adjusting the actual rotational speed to approach the setpoint rotational speed by generating an additional setpoint value additionally applying the additional setpoint value to the setpoint value and incrementing or decrementing the additional setpoint value until the setpoint rotational speed of the turbocharger rotor (1) is reached.