Controlling DC Motor with Microcontroller

Here’s a quick article to create a digital controller without too many theories: “PID without PhD” 

The article writes a fairly complete digital handbook, discussing from digital control theory to source code, minus Rotary Encoder & PWM. Tim Wescott, Applied Control Theory for Embedded Systems, Newnes 2006

Some problems:

Yesterday I had tinkering a few hours, the summary as follows. Some things that might make the problem:

1. Specifications Rotary Encoder, able to how many rpm?

2. Interfacing encoder into a microprocessor. Is the signal from the encoder well received in the microprocessor?

3. External interrupt settings, is it correct?

4. Time to interrupt: Does the CPU quite quickly process the data before the next interrupt comes? Is lower interruptions a priority CPU allowance?

5. Is there any other process in the microprocessor that rebutted the CPU ration?

Use of interruptions in STM32:

https://circuitdigest.com/microcontroller-projects/getting-started-with-stm32-development-board-stm32f103c8-using-arduino-ide
https://circuitdigest.com/microcontroller-projects/how-to-use-interrupts-in-stm32f103c8

Alternative Motor Driver

Alternative Motor drivers:

– TB6612FNG

– L293

– L298

-Discrete MOSFET

-Discrete BJT

DigitalWrite Slow

https://www.peterbeard.co/blog/post/why-is-arduino-digitalwrite-so-slow/

Reference

• PID without PID (PDF)
• PID without PID (EE-Times India)