Steuereinrichtung für einen in der Resonanzfrequenz schwingenden Schwingförderer

摘要

The invention relates to a control device for a vibrating conveyor (2) which can be excited by a magnet device (3) and has a power section (1) which is connected upstream of the magnet device (3). A sensor (19) produces a signal which corresponds to the vibration of the vibrating conveyor (2) and is supplied to the control circuit (10) as the actual value. A setting, which is predetermined by means of a setting device (23), for the vibration is compared with the actual value. The power section (1) controls the magnet device (3) of the vibrating conveyor (2) in accordance with the difference determined from the setting/actual value comparison, such that the actual value corresponds to the setting. The natural resonant frequency of the vibrating conveyor (2) is determined in that a predetermined frequency range is moved through during the allocation of a specific setting, and the difference between the setting and the actual value is determined for each frequency, and in that the frequency corresponding to the smallest difference is defined as the natural resonant frequency of the vibrating conveyor (2).