#$%^&*AU2014201332A120141002.pdf#####Abstract A method is proposed for controlling a device for changing the spreading ring sector of a disc spreader which comprises a controllable metering device, a distributor disc which is arranged underneath the metering device and is provided with thrower blades, and the device for changing the spreading ring sector of the granular material on the ground. In this context, functional dependencies of a setting parameter of the device for changing the spreading ring sector on a throwing parameter are stored in a database of a control unit which is assigned to the device for adjusting the spreading ring sector, and a set point value of the throwing parameter or of the setting parameter corresponding thereto is input in the control unit. An actual value of the throwing parameter is determined using a sensor which is arranged near to the circumference of the distributor disc, after which the actual value, which is determined using the sensor, of the throwing parameter is compared with the set point value thereof in the control unit. In the case of a deviation of the actual value from the set point value by more than a maximum value the setting parameter of the device for changing the spreading ring sector is readjusted, with the result that the throwing parameter which corresponds thereto deviates from the set point value thereof by less than the maximum value. The invention provides that the functional dependencies, stored in the database, of the setting parameter on the throwing parameter take into account the type of the respective distributor disc and/or the thrower blades thereof. In addition, a disc spreader which is suitable for carrying out such a method is described.
