Abstract: Disclosed is a nut welding automation system configured to automatically weld different types of nuts to holes formed in a metal-processed product using a robot. The system may reduce an error rate with respect to products by preventing omission of a nut or welding of a wrong type nut so that reliability in administration of the welding process may be secured and overall productivity may be improved.

Abstract: Provided is a press process automation system for a metal plate using an auto-robot. The press process automation system includes a loading unit configured to provide a stack in which a plurality of metal plates are stacked in a height direction thereof, a first robot which is coupled to the metal plate disposed on the loading unit, a table unit which is disposed at a lower position than the first target position, and determines whether the number of the metal plates is one, a second robot configured to vacuum-adsorb an upper surface of the metal plate disposed on the table unit, and a press mold unit including a lower mold which is vertically disposed at a lower position than the third target position and on which the metal plate is mounted, and an upper mold which is vertically moved from above the lower mold.

Abstract: Disclosed is a nut welding automation system configured to automatically weld different types of nuts to holes formed in a metal-processed product using a robot. The system may reduce an error rate with respect to products by preventing omission of a nut or welding of a wrong type nut so that reliability in administration of the welding process may be secured and overall productivity may be improved.

Abstract: Provided is a press process automation system for a metal plate using an auto-robot. The press process automation system includes a loading unit configured to provide a stack in which a plurality of metal plates are stacked in a height direction thereof, a first robot which is coupled to the metal plate disposed on the loading unit, a table unit which is disposed at a lower position than the first target position, and determines whether the number of the metal plates is one, a second robot configured to vacuum-adsorb an upper surface of the metal plate disposed on the table unit, and a press mold unit including a lower mold which is vertically disposed at a lower position than the third target position and on which the metal plate is mounted, and an upper mold which is vertically moved from above the lower mold.

Abstract: The present invention relates to a pre-processing apparatus using nonuniform quantization of a channel reliability value and a low density parity check (LDPC) decoding system. The pre-processing apparatus can present degradation in performance and be embodied simply by performing decoding pre-process by estimating a discrete channel reliability value (Lc*) through nonuniform quantization of a channel reliability value based on a relations between a bit error rate (BER) estimated through a simulation performed in advance and a standard deviation (?) of channel noise within a predetermined range of noise estimation error and p, and bit-shifting a receiving signal as much as a discrete channel reliability value. The pre-processing apparatus includes: a channel reliability measuring unit, a nonuniform quantizing unit, a sign bit adding unit, a bit shifting unit.

Abstract: The present invention relates to a pre-processing apparatus using nonuniform quantization of a channel reliability value and a low density parity check (LDPC) decoding system. The pre-processing apparatus can present degradation in performance and be embodied simply by performing decoding pre-process by estimating a discrete channel reliability value (Lc*) through nonuniform quantization of a channel reliability value based on a relations between a bit error rate (BER) estimated through a simulation performed in advance and a standard deviation (?) of channel noise within a predetermined range of noise estimation error and p, and bit-shifting a receiving signal as much as a discrete channel reliability value. The pre-processing apparatus includes: a channel reliability measuring unit, a nonuniform quantizing unit, a sign bit adding unit, a bit shifting unit.