Transport control method, a transport apparatus, and a printing apparatus
US-2018273330-A1 · Sep 27, 2018 · US
Dynamic performance and active damping methods in web winder tension control systems
US10377598B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10377598-B2 |
| Application number | US-201715435549-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 17, 2017 |
| Priority date | Feb 17, 2017 |
| Publication date | Aug 13, 2019 |
| Grant date | Aug 13, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
A control system for controlling operation of main and secondary drive units in a web winder system to provide tension control of a continuous material web is disclosed. The control system causes the main drive unit to operate in a velocity mode to set a linear velocity of the continuous material web. The control system receives inputs from tension and speed detectors in the web winder system that detect a tension and speed of the continuous material web and causes the secondary drive unit to operate in a modified torque regulated closed-loop tension control mode so as to control a tension in the web material, with the control system causing the secondary drive unit to operate according to a torque regulated closed-loop tension control mode and integrate a speed feedback loop into the torque regulated closed-loop tension control mode so as to introduce active damping into the tension control.
First claim
Opening claim text (preview).
What is claimed is: 1. A control system for controlling operation of a main drive unit and a secondary drive unit in a web winder system to provide tension control of a continuous material web as it is translated between an unwinder and winder of the web winder system, the control system having a processor programmed to: cause the main drive unit to operate in a velocity mode to set a linear velocity of the continuous material web; receive inputs from tension and speed detectors in the web winder system that detect a tension in and a speed of the continuous material web; and cause the secondary drive unit to operate in a modified torque regulated closed-loop tension control mode so as to control a tension in the web material, wherein operating in the modified torque regulated closed-loop tension control mode comprises: causing the secondary drive unit to operate according to a torque regulated closed-loop tension control mode, based on inputs from the tension detectors; and integrating a speed feedback loop into the torque regulated closed-loop tension control mode, via inputs from the speed detectors, so as to introduce active damping into the tension control. 2. The control system of claim 1 wherein the processor is programmed to cause the secondary drive unit to operate in a modified torque regulated closed-loop tension control mode according to a closed loop transfer function defined as: G ω m i sq = K a G ω m T 1 + G ω m T R 2 G F Δ v = K a + K a F t s JF t s 2 + Js + R 2 K F , where F is the actual tension, ω m is the actual speed of the winder, K a is the proportionality coefficient between electromagnetic torque and torque current, K F is the tension coefficient, G ω m T is the transfer function between speed and torque, G FΔν is the dynamic transfer function of tension, R is the real-time diameter of the winder, J is the rotational inertia of the winding block, s is a first order speed term. 3. The control system of claim 1 wherein the processor is programmed to cause the secondary drive unit to operate in a modified torque regulated closed-loop tension control mode according to an open loop transfer function defined as: G F ( s ) = K p F ( 1 + K i F s ) = K a RK F JF t s 2 + (
Assignees
Inventors
Classifications
with key characteristics based on closed loop control · CPC title
Torque e.g. braking torque · CPC title
combinations of drives · CPC title
in winding mechanisms or in connection with winding operations · CPC title
in reel-to-reel type web winding and unwinding mechanism, e.g. mechanism acting on web-roll spindle · CPC title
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- What does patent US10377598B2 cover?
- A control system for controlling operation of main and secondary drive units in a web winder system to provide tension control of a continuous material web is disclosed. The control system causes the main drive unit to operate in a velocity mode to set a linear velocity of the continuous material web. The control system receives inputs from tension and speed detectors in the web winder system t…
- Who is the assignee on this patent?
- Eaton Corp, Univ Zhejiang, Eaton Intelligent Power Ltd
- What technology area does this patent fall under?
- Primary CPC classification B65H23/044. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 13 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).