Does a DI Controller Improve Recovery Time Compared to No Controller?

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  • #1
Sam Groves
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If we use a DI controller the error doesnt get better.Regarding the error it is the same as we didnt have any controller at all.But does the DI controller improve the recovery time or not to not having any controller at all?
 
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  • #2
Hi,

Can you please read your post and agree that telepathy is required to make sense of it ?
Do present us with a complete case instead of leaving us guessing ...
Thanks !

##\ ##
 
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  • #3
Sam Groves said:
If we use a DI controller the error doesnt get better.
Maybe you have forgotten the P of PID.
In your case, being proportional may be important because there is an I or D, inherent in the control loop.
The right answer will be obvious, once you know the right question.

“The only interesting answers are those which destroy the question”. —Susan Sontag
 
  • #4
BvU said:
Hi,

Can you please read your post and agree that telepathy is required to make sense of it ?
Do present us with a complete case instead of leaving us guessing ...
Thanks !

##\ ##
What do you mean?
 
  • #5
Sam Groves said:
What do you mean?
What are you trying to control ?
 
  • #6
BvU said:
Hi,

Can you please read your post and agree that telepathy is required to make sense of it ?
Do present us with a complete case instead of leaving us guessing ...
Thanks !

##\ ##
What do you mean
Baluncore said:
What are you trying to control ?
A 1st order ot a 2nd order system.
 
  • #7
Given the great specificity of your posts, I'm confident that the answer is something, something, something.
 
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  • #8
Sam Groves said:
A 1st order ot a 2nd order system.
This is like extracting teeth.
OK. Let's start at the beginning.
Was your failed attempt at a DI controller, implemented in software, in analogue electronics, or in something completely different ?

Later, we may ask, how you selected the time constants, or on what make and model hardware the controller runs. But let's not get ahead of ourselves, or we will not have all of January to think about it.
 
  • #9
Sam Groves said:
If we use a DI controller the error doesnt get better.Regarding the error it is the same as we didnt have any controller at all.But does the DI controller improve the recovery time or not to not having any controller at all?
Please provide more information. Currently no one has any idea what you're asking. Imagine we don't know what a DI controller is or what you're doing with it.
 
  • #10
This is the sort of subject where if you can't ask a question that experts can understand, you won't understand the answer.

Having said that, my general advice is to ditch the "D" part ASAP. It will just confuse you, and it's likely you don't need it anyway.
 
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  • #11
DaveE said:
This is the sort of subject where if you can't ask a question that experts can understand, you won't understand the answer.

Having said that, my general advice is to ditch the "D" part ASAP. It will just confuse you, and it's likely you don't need it anyway.
Yeah I agree I think PI controllers are the best.
 

Related to Does a DI Controller Improve Recovery Time Compared to No Controller?

What is a DI controller?

A DI (Direct Injection) controller is an electronic device used in various systems, such as automotive engines and industrial processes, to manage and optimize the direct injection of fuel or other substances. It ensures precise control over the injection timing, quantity, and pressure, leading to improved efficiency, performance, and emissions control.

How does a DI controller improve system performance?

A DI controller improves system performance by providing precise control over the injection process. This precision allows for optimal combustion, which enhances power output, fuel efficiency, and reduces emissions. It also enables better response to changing conditions, such as load and speed, ensuring consistent performance.

What are the benefits of using a DI controller compared to no controller?

Using a DI controller offers several benefits compared to having no controller. These benefits include improved fuel efficiency, reduced emissions, enhanced engine performance, better responsiveness, and the ability to fine-tune the system for different operating conditions. Without a controller, the system may suffer from inefficiencies, higher emissions, and reduced performance.

Can a system without a DI controller still function effectively?

While a system without a DI controller can still function, it will likely be less efficient and have higher emissions compared to a system with a controller. The lack of precise control over the injection process can lead to suboptimal combustion, resulting in reduced performance and increased fuel consumption. In modern applications, especially in automotive engines, a DI controller is essential for meeting stringent efficiency and emissions standards.

Are there any drawbacks to using a DI controller?

One potential drawback of using a DI controller is the increased complexity and cost of the system. The controller itself, along with the necessary sensors and actuators, adds to the overall expense and requires more sophisticated maintenance. However, the benefits in terms of efficiency, performance, and emissions typically outweigh these drawbacks, making DI controllers a worthwhile investment in most applications.

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