Abstract: A method is provided for determining the throughput of a parallelepiped agricultural baler. The baler has a feed duct communicating between a crop pick-up assembly and a baling chamber and the feed duct serves as a pre-compression chamber to accumulate crop to a predetermined density before the crop is transferred to the baling chamber. The transfer of the crop from the feed duct (pre-compression chamber) to the baling chamber is accomplished by a stuffer mechanism actuated in response to a crop density sensor associated with the feed duct (pre-compression chamber). The baler further has a plunger mechanism that compresses the crop into a column to form a bale in the baling chamber. The invention senses when the crop in the feed duct (pre-compression chamber) has reached a predetermined density for transfer to the baling chamber and when the plunger has attained a home position that allows for transfer of crop from the feed duct (pre-compression chamber) into the baling chamber.

Abstract: A large rectangular baler includes pick-up and packer rotors, a pivotable stuffer, a plunger head, a knotter shaft and a needle yoke, and tension panels that are all driven hydraulically and independently controlled through electrically controlled valves that actuate the various hydraulic power devices used to power the various functions. An electronic control unit is coupled to each of the control valves and receives feedback signals from the controlled functions which are compared with values representing desired function results so as to further control the valves to attain the desired results. In addition to the feedback signals from the powered functions, signals from a bale length sensor and a ground speed sensor are also coupled to the electronic control unit for use in controlling the powered functions.

Abstract: A large rectangular baler includes pick-up and packer rotors, a pivotable stuffer, a plunger head, a knotter shaft and a needle yoke, and tension panels that are all driven hydraulically and independently controlled through electrically controlled valves that actuate the various hydraulic power devices used to power the various functions. An electronic control unit is coupled to each of the control valves and receives feedback signals from the controlled functions which are compared with values representing desired function results so as to further control the valves to attain the desired results. In addition to the feedback signals from the powered functions, signals from a bale length sensor and a ground speed sensor are also coupled to the electronic control unit for use in controlling the powered functions.