Skip to main content

Questions tagged [feedforward]

The control path from input to output with some set transfer function.

Filter by
Sorted by
Tagged with
0 votes
0 answers

Why isn't feedforward+feedback higher performance than just feedback?

This questions related to feedforward (FF) and feedback (FB) interactions. As an example, say there's a control system keeping a car centered in a lane while driving. Say the car includes a FF sensor (...
J B's user avatar
  • 3
-1 votes
2 answers

How to apply feedforward correction to a simple three-stage amplifier?

I think I understand the principle of the feedforward error correction, but I have problems with the practice. Having a simplified structure of a three-stage amplifier made with transistors, how a ...
Northumber's user avatar
6 votes
1 answer

What electronic component does this symbol represent?

From a schematic of a feed forward converter.
Bilal Ahmed's user avatar
2 votes
1 answer

What is the function of the feedforward capacitor on the LM2596-ADJ?

I'm looking at the LM2596S datasheet and notice that on page 7 (figure 3) it recommends a "feedforward" capacitor for the adjustable variant. The example schematic on page 9 shows a ...
Polynomial's user avatar
  • 10.7k
1 vote
0 answers

Transient peaks during MOSFET switching (feed-forward)

I am working on a circuit, part of which looks like this: Signal SW is switching the MOSFET on and off such that the nodes ac+ and ac- are shorted (modulated). When SW is high to turn on the MOSFET ...
AlveyFrost's user avatar
0 votes
1 answer

A forward converter or flyback converter without voltage spikes?

I was thinking of a way to avoid voltage spikes in a flyback converter and I decided to redirect voltage spikes back to the battery, hence dampening the voltage spikes. Will this method work ...
BELSmith's user avatar
  • 146
0 votes
1 answer

Feedforward Control: Plant's Process vs Disturbance Model

I have a question on Feedforward Control in a control system, in distinguishing a Plant's Process vs Disturbance Model. Say the Plant is a motor driving a wheel of a car. There's a measurable ...
J B's user avatar
  • 3
0 votes
0 answers

Feedforward from measurable disturbance

Gff is chosen so that it completely cancels the disturbance (Gff = -Gv/P) and Lp < Lv. Is it easier to control if Tp < Tv or Tp > Tv. I am a little bit lost on how to begin here? Should I ...
LukasL's user avatar
  • 128
2 votes
2 answers

Can badly tuned Feedforward still decrease following error

Let's say we're trying to control the speed of a motor to 20 revs/sec, and we know that our controller output for that speed is approximately 5. We currently have a Proportional controller to drive ...
19172281's user avatar
  • 743
7 votes
3 answers

The term Feed-forward and its meaning?

I am trying to understand the technical meaning of the term 'feed-forward', when and where it can be used and where it cannot be used? I have seen this term in various different areas. For example: ...
alt-rose's user avatar
  • 1,469
0 votes
3 answers

How can feedforward be used with PID for motion control

In a motion control system where a motor accelerates, coasts, and decelerates (setpoint is position, not velocity!), what would be the benefit of using feedforward with PID, instead of solely PID? ...
M-R's user avatar
  • 789
2 votes
2 answers

What is the relationship between feedforward control and bandwidth?

This is a control theory question, but because there is no control theory stack exchange, I thought this was the closest appropriate location: I've been studying feedforward control system designs, ...
Izzo's user avatar
  • 2,036
1 vote
2 answers

Implementing Feedfoward from a Feedback Control System

In a standard feedback control system, you have a set point, a controller, a plant, and a sensor to enable feedback. The sensor measures the process variable (or in other words, the argument you are ...
gelman_grad's user avatar
4 votes
5 answers

Could you explain how feedforward is used in walking?

I am reading about feedforward in control system. And in this lecture, slide 49, the author says that feedforward is common in human systems. Example, walking, playing basketball, driving a car. ...
emnha's user avatar
  • 1,639