#$%^&*AU2014200705A120140828.pdf#####Abstract A method for regulating the actual mass flow of spreading material of a regulated metering unit of a disc spreader with a distribution disc associated with the metering unit is proposed, wherein a target mass flow of spreading material is determined depending on at least a plurality of spreading parameters and said target mass flow is input to a computer-based regulating device as a reference value. On the one hand a sensor-determined controlled variable representative of the actual mass flow, on the other hand the sensordetermined actual revolution rate of the distribution disc or of a shaft in the drive train itself is also input to the control device, whereupon in a regulating mode of the regulating device the deviation of the actual mass flow of spreading material from the target mass flow is determined and an actuating variable representative of the opening position of the metering unit is generated depending on the actual revolution rate of the distribution disc or of the shaft in the drive train itself in order to readjust the metering unit to the target mass flow. The invention provides that the regulating device is set into a control mode or a control mode of a control device is activated during changes of the sensor-determined revolution rate of the distribution disc or of the shaft in the drive train itself and/or while the signal-to-noise ratio of the sensor-determined controlled variable is below a minimum signal-to-noise ratio, wherein in the control mode an actuating variable representative of the opening position of the metering unit is generated independently of the sensor-determined controlled variable in order to control the metering unit of thedistribution disc independently of said controlled variable.
