Roller-to-roller conveyance control apparatus

Patent metadata

Field	Value
Publication number	US-2016340140-A1
Application number	US-201415112236-A
Country	US
Kind code	A1
Filing date	Nov 27, 2014
Priority date	Nov 27, 2014
Publication date	Nov 24, 2016
Grant date	—

Abstract

The roller-to-roller conveyance control apparatus includes an amplitude target setting unit that sets an amplitude target value of the tension deviation; an adjustment execution command generation unit that provides a command to adjust the control gain; an adjustment manipulated-variable output unit that outputs an adjustment manipulated variable; a manipulated-variable amplitude determination unit that increases the amplitude of the adjustment manipulated variable until the amplitude of the tension deviation becomes larger than the amplitude target value; and a control-gain calculation device that calculates the control gain from the amplitude and the vibration period of the tension deviation. A tension-shaft speed controller controls a tension-control-shaft motor on the basis of the line speed reference and the adjustment manipulated variable during the adjustment of the control gain.

First claim

1 . A roller-to-roller conveyance control apparatus that comprises:
a speed-shaft roller that is driven by a speed-control-shaft motor; a tension-shaft roller that is driven by a tension-control-shaft motor; a tension detector that detects a tension of a conveyed material that is conveyed between the speed-shaft roller and the tension-shaft roller; a line-speed reference setting unit that sets a line speed reference for the conveyed material; a tension-command setting unit that sets a tension command for the conveyed material; a tension controller that calculates a tension control correction command on a basis of a control gain and a tension deviation that is a difference between the tension command and the tension; a speed-shaft speed controller that controls the speed-control-shaft motor on a basis of the line speed reference; and a tension-shaft speed controller that controls the tension-control-shaft motor on a basis of the line speed reference and the tension control correction command, the roller-to-roller conveyance control apparatus comprising: an amplitude target setting unit that sets an amplitude target value of the tension deviation; an adjustment execution command generation unit that provides a command to adjust or not to adjust the control gain; an adjustment manipulated-variable output unit that outputs an adjustment manipulated variable in such a manner that a sign of the adjustment manipulated variable is reversed on a basis of a sign of the tension deviation during adjustment of the control gain; a manipulated-variable amplitude determination unit that increases an amplitude of the adjustment manipulated variable until an amplitude of the tension deviation becomes larger than the amplitude target value during adjustment of the control gain; and a control-gain calculation device that calculates the control gain from the amplitude and a vibration period of the tension deviation during adjustment of the control gain, wherein the tension-shaft speed controller controls the tension-control-shaft motor on a basis of the line speed reference and the adjustment manipulated variable during adjustment of the control gain.

2 . The roller-to-roller conveyance control apparatus according to claim 1 , wherein the manipulated-variable amplitude determination unit increases the amplitude of the adjustment manipulated variable linearly in relation to an elapsed time and causes the amplitude of the adjustment manipulated variable to be a constant value after the amplitude of the tension deviation becomes larger than the amplitude target value.

3 . A roller-to-roller conveyance control apparatus that comprises:
a speed-shaft roller that is driven by a speed-control-shaft motor; a tension-shaft roller that is driven by a tension-control-shaft motor; a tension detector that detects a tension of a conveyed material that is conveyed between the speed-shaft roller and the tension-shaft roller; a line-speed reference setting unit that sets a line speed reference for the conveyed material; a tension-command setting unit that sets a tension command for the conveyed material; a tension controller that calculates a tension control correction command on a basis of a control gain and a tension deviation that is a difference between the tension command and the tension; a speed-shaft speed controller that controls the speed-control-shaft motor on a basis of the line speed reference; and a tension-shaft speed controller that controls the tension-control-shaft motor on a basis of the line speed reference and the tension control correction command, the roller-to-roller conveyance control apparatus comprising: an amplitude target setting unit that sets an amplitude target value of the tension deviation; an adjustment execution command generation unit that provides a command to adjust or not to adjust the control gain; an adjustment manipulated-variable output unit that outputs an adjustment manipulated variable on a basis of the tension deviation during adjustment of the control gain; a manipulated-variable amplitude determination unit that increases an amplitude of the adjustment manipulated variable until an amplitude of the tension deviation becomes larger than the amplitude target value during adjustment of the control gain; a control-gain calculation device that calculates the control gain from the amplitude and a vibration period of the tension deviation during adjustment of the control gain; and an amplitude threshold setting unit that sets an amplitude threshold that is smaller than the amplitude target value, wherein the manipulated-variable amplitude determination unit increases the amplitude of the adjustment manipulated variable linearly in relation to an elapsed time when the amplitude of the tension deviation is smaller than the amplitude threshold, increases the amplitude of the adjustment manipulated variable every time a sign of the tension deviation changes when the amplitude of the tension deviation is larger than the amplitude threshold and is smaller than the amplitude target value, and causes the amplitude of the adjustment manipulated variable to be a constant value after the amplitude of the tension deviation becomes larger than the amplitude target value, and the tension-shaft speed controller controls the tension-control-shaft motor on a basis of the line speed reference and the adjustment manipulated variable during adjustment of the control gain.

4 . The roller-to-roller conveyance control apparatus according to claim 1 ,
wherein the tension-shaft speed controller controls the tension-control-shaft motor such that a rotational speed of the tension-control-shaft motor agrees with a rotational speed based on a sum of the line speed reference and the adjustment manipulated variable that increases in amplitude until the amplitude of the tension deviation becomes larger than the amplitude target value during adjustment of the control gain.

5 . A roller-to-roller conveyance control apparatus that comprises:
a speed-shaft roller that is driven by a speed-control-shaft motor; a tension-shaft roller that is driven by a tension-control-shaft motor; a tension detector that detects a tension of a conveyed material that is conveyed between the speed-shaft roller and the tension-shaft roller; a line-speed reference setting unit that sets a line speed reference for the conveyed material; a tension-command setting unit that sets a tension command for the conveyed material; a tension controller that calculates a tension control correction command on a basis of a control gain and a tension deviation that is a difference between the tension command and the tension; a speed-shaft speed controller that controls the speed-control-shaft motor on a basis of the line speed reference; and a tension-shaft speed controller that controls the tension-control-shaft motor on a basis of the line speed reference and the tension control correction command, the roller-to-roller conveyance control apparatus comprising: an amplitude target setting unit that sets an amplitude target value of the tension deviation; an adjustment execution command generation unit that provides a command to adjust or not to adjust the control gain; an adjustment manipulated-variable output unit that outputs an adjustment manipulated variable on a basis of the tension deviation during adjustment of the control gain; a manipulated-variable amplitude determination unit that increases an amplitude of the adjustment manipulated variable until an amplitude of the tension deviation becomes larger than the amplitude target value during adjustment of the control gain; and a control-gain calculation device that calculates the control gain from the amplitude and a vibration period of the tension deviation during adjustment o

Assignees

• Mitsubishi Electric Corp

Inventors

• Onodera Yasuo
• Yamamoto Tsutomu
• Kimura Masaya

Classifications

• G05B13/02

  electric · CPC title

• B65H23/1806 Primary

  in reel-to-reel type web winding and unwinding mechanism, e.g. mechanism acting on web-roll spindle · CPC title

• B65H23/18 Primary

  by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web · CPC title

• B65H23/185

  motor-controlled · CPC title

• B65H23/198

  motor-controlled {(Controlling electrical drive motors therefor)} · CPC title