IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0756595
(2010-04-08)
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등록번호 |
US-8805553
(2014-08-12)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
2 인용 특허 :
20 |
초록
▼
A method for dynamically controlling the output of a computerized manufacturing process includes storing a product target parameter in a computer memory of a computer system associated with the manufacturing process equipment. Control limit values for a product delivery statistic are provided and a
A method for dynamically controlling the output of a computerized manufacturing process includes storing a product target parameter in a computer memory of a computer system associated with the manufacturing process equipment. Control limit values for a product delivery statistic are provided and a product delivery parameter is continually monitored and values are stored in the computer memory. A unit product over-delivery amount is determined from the difference between the product delivery parameter and the product target parameter. A cumulative over-delivery amount is determined by summing the difference up to the current sequence number between monitored value for the previously-produced unit products and the product target parameter. A net difference is then determined between the unit product over-delivery target parameter and the cumulative over-delivery amount. A predetermined modifier is provided and the net difference is adjusted by the predetermined modifier to obtain a control limit adjustment, and the control limits are adjusted by the control limit adjustment.
대표청구항
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1. A method for controlling an output of a computerized manufacturing process, the method comprising: storing a product target parameter (TW) for a unit process in a computer memory of a computer system associated with manufacturing process equipment;storing control limit values (CL) in the computer
1. A method for controlling an output of a computerized manufacturing process, the method comprising: storing a product target parameter (TW) for a unit process in a computer memory of a computer system associated with manufacturing process equipment;storing control limit values (CL) in the computer memory for a product delivery statistic (Ra) of the product target parameter (TW);storing a unit product over-delivery target parameter (OT);monitoring a unit product delivery parameter (LW) for the unit process and continually storing values in the computer memory for the product delivery parameter and a sequence number of unit products produced;calculating a unit product over-delivery parameter (PO) by determining the difference between the unit product delivery parameter (LW) and the product target parameter (TW);determining a cumulative over-delivery amount (BO) for a number of previously produced unit products in a processor of the computer system up to a current sequence number;determining a net difference between the unit product over-delivery target parameter (OT) and the cumulative over-delivery amount (BO) in the processor of the computer system;providing a predetermined modifier (CLAM) that represents a fractional amount of the unit product over-delivery target parameter (OT) and adjusting the net difference by the predetermined modifier to obtain a control limit adjustment (CLA); andadjusting the control limit values (CL) by the control limit adjustment (CLA) to obtain adjusted control limits and processing additional unit products through the unit process using the adjusted control limits. 2. The method of claim 1, wherein monitoring a product delivery parameter comprises monitoring at least one of a product unit weight, a product unit volume, or a product unit moisture content. 3. The method of claim 1, wherein determining the cumulative over-delivery amount (BO) comprises summing a difference between the product delivery parameter (LW) for a number of previously produced unit products and the product target parameter (TW). 4. The method of claim 1, wherein adjusting the difference by a predetermined modifier (CLAM) comprises multiplying the difference by the predetermined modifier (CLAM). 5. The method of claim 1, wherein providing a predetermined modifier (CLAM) comprises: a) selecting a value for the predetermined modifier (CLAM);b) applying the value to change the control limit values (CL) to provide adjusted control limits;c) observing changes in the product delivery statistic (Ra) relative to the adjusted control limits for a predetermined time period, if the product delivery statistic (Ra) moves outside of the adjusted control limits, selecting a new value for the predetermined modifier (CLAM); andd) repeating steps b) and c) until the product delivery statistic (Ra) stays within the adjusted control limits for the predetermined time period. 6. The method of claim 1, wherein the computerized manufacturing process comprises a food product slice process, and wherein storing a product target parameter (TW) comprises storing a weight of a predetermined number of slices, and monitoring a product delivery parameter (LW) comprises determining the weight of the predetermined number of slices and communicating the weight to the computer system. 7. The method of claim 6, further comprising regulating a pressure delivery of a food product to a casting belt to maintain the cumulative over-delivery parameter (BO) within the adjusted control limits. 8. The method of claim 6, further comprising regulating a push distance of a block of food product in the slice process to maintain the cumulative over-delivery parameter (BO) within the adjusted control limits. 9. The method of claim 6, further comprising regulating a pressure delivery of food product in an extruder to maintain the cumulative over-delivery parameter (BO) within the adjusted control limits. 10. The method of claim 1, wherein the computerized manufacturing process comprises a food product container filling process, and wherein storing a product target parameter (TW) comprises storing a weight of a predetermined number of food product portions, and monitoring a product delivery parameter (LW) comprises determining the weight of the predetermined number of food product portions and communicating the weight to the computer system. 11. The method of claim 10, further comprising regulating the delivery of food product portions to staging units in a bagging drop system to maintain the cumulative over-delivery parameter (BO) within the adjusted control limits. 12. The method of claim 10, further comprising regulating the delivery of food product portions to volumetric staging units in a piston chamber to maintain the cumulative over-delivery parameter (BO) within the adjusted control limits. 13. The method of claim 10, further comprising regulating the delivery of food product portions to volumetric staging units in auger chamber to maintain the cumulative over-delivery parameter (BO) within the adjusted control limits. 14. The method of claim 10, further comprising regulating the delivery of liquid food product portions to volumetric staging units in a bottling process to maintain the cumulative over-delivery parameter (BO) within the adjusted control limits. 15. The method of claim 1, wherein the computerized manufacturing process comprises a cooking process, and wherein storing a product target parameter (TW) comprises storing a value for moisture content of a predetermined number of cooked food product portions, and monitoring a product delivery parameter (LW) comprises determining the moisture content of the predetermined number of food product portions and communicating the moisture content to the computer system. 16. A method for controlling an output of a computerized manufacturing process, the method comprising: storing a product target parameter (TW) for a unit process in a computer memory of a computer system associated with manufacturing process equipment;storing control limit values (CL) in the computer memory for a product delivery statistic (Ra) of the product target parameter (TW);storing a unit product over-delivery target parameter (OT);monitoring a product delivery parameter (LW) for the unit process and continually storing values in the computer memory for the product delivery parameter and a sequence number of unit products produced;determining a cumulative over-delivery amount (BO) in the processor of the computer system by summing the difference between the product delivery parameter (LW) and the product target parameter (TW) for a number of product units previously produced up to a current sequence number;determining a net difference between the cumulative over-delivery amount (BO) and the unit product over-delivery target parameter (OT) in a processor of the computer system;providing a predetermined modifier (CLAM) that represents a fractional amount of the unit product over-delivery target parameter (OT) and adjusting the net difference by the predetermined modifier to obtain a control limit adjustment (CLA);adjusting the control limit values (CL) by the control limit adjustment (CLA) to obtain adjusted control limits; andusing the computer to regulate product delivery to a staging system within the manufacturing process, so as to maintain the product delivery statistic (Ra) within the adjusted control limits for the unit process. 17. The method of claim 16, wherein monitoring a product delivery parameter comprises monitoring at least one of a product unit weight, a product unit volume, a product unit moisture content, a product unit pH value, or product unit chemical concentration. 18. The method of claim 16, wherein providing a predetermined modifier (CLAM) comprises: a) selecting a value for the predetermined modifier (CLAM);b) applying the value to change the control limit values (CL) to provide the adjusted control limits;c) observing changes in the product delivery statistic (Ra) relative to the adjusted control limits for a predetermined time period, if the product delivery statistic (Ra) moves outside of the adjusted control limits, selecting a new value for the predetermined modifier (CLAM); andd) repeating steps b) and c) until the product delivery statistic (Ra) stays within the adjusted control limits for the predetermined time period. 19. A method for controlling a continuous manufacturing process comprising: determining a cumulative over-delivery amount by summing a difference between a measured parameter for a number of previously produced unit products from a unit process and a target parameter for the unit process;determining a net difference between a target over-delivery amount and the cumulative over-delivery amount; andadjusting process control limits (CL) for a product delivery statistic of the unit products by providing a predetermined modifier (CLAM) that represents a fractional amount of the target over-delivery amount and multiplying the net difference by the predetermined modifier (CLAM) to obtain adjusted control limits for the unit process. 20. The method of claim 19 further comprising regulating product delivery to a staging system within the manufacturing process, so as to maintain the product delivery statistic within the adjusted control limits. 21. The method of claim 19, wherein providing a predetermined modifier comprises: a) selecting a value for the predetermined modifier (CLAM);b) applying the value to change the process control limits (CL) to provide the adjusted control limits;c) observing changes in the product delivery statistic (Ra) relative to the adjusted control limits for a predetermined time period, if the product delivery statistic (Ra) moves outside of the adjusted control limits, selecting a new value for the predetermined modifier (CLAM); andd) repeating steps b) and c) until the product delivery statistic (Ra) stays within the adjusted control limits for the predetermined time period. 22. The method of claim 19, wherein summing a difference between a number of previously produced unit products and the target parameter comprises monitoring a sequence number for the unit products produced and summing the difference up to a current sequence number.
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