Systems and methods for controlling a conveyor system during product changeovers

Patent metadata

Field	Value
Publication number	US-10289104-B2
Application number	US-201815987484-A
Country	US
Kind code	B2
Filing date	May 23, 2018
Priority date	Sep 30, 2013
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

System for controlling a conveyor system in a wallboard production line, including a computer processor and a deadband tuning module for controlling at least one of a line speed of a conveyor belt, a foam air amount for a slurry, and an amount of water deposited into a mixer. The deadband tuning module calibrates and sets a hysteresis threshold value based on input data of at least one of the line speed, the foam air amount, and the amount of water. The input data is collected over a predetermined period. A database is provided for storing at least one statistical information of the input data during the predetermined period. The deadband tuning module determines a deadband range based on the hysteresis threshold value and the at least one statistical information using the processor.

First claim

What is claimed is:

1. A system for controlling a conveyor system in a wallboard production line, comprising:
a computer processor;
a deadband tuning module for controlling at least one of a line speed of a conveyor belt, a foam air amount for a slurry, and an amount of water deposited into a mixer;
wherein said deadband tuning module calibrates and sets a hysteresis threshold value based on input data of at least one of said line speed, said foam air amount, and said amount of water, said input data being collected over a predetermined period;
a database for storing at least one statistical information of said input data during the predetermined period; and
wherein said deadband tuning module determines a deadband range based on said hysteresis threshold value and said at least one statistical information using the processor.

2. The system of claim 1 , wherein said deadband tuning module determines said hysteresis threshold value based on at least one of minimum, maximum, average, and standard deviation values of said input data.

3. The system of claim 1 , wherein said deadband range is calibrated and overridden manually for locking in said deadband range at a desired offset from a predetermined value based on said input data.

Assignees

• United States Gypsum Co

Inventors

• Dellangelo Scott M
• Wykoff Robert

Classifications

• B28B19/0092

  to webs, sheets or the like, e.g. of paper, cardboard · CPC title

• G05B19/4189 Primary

  characterised by the transport system · CPC title

• B28B17/0081 Primary

  Process control · CPC title

• B28B11/24 Primary

  for curing, setting or hardening (processes for influencing or modifying the setting or hardening ability of mortars, concrete or artificial stone compositions, in general C04B40/00) · CPC title

• Y02P80/40

  Minimising material used in manufacturing processes · CPC title