Control Theory used in practice
Physical interpretation of impulse response and its transfer function

I have tried to verify how the function g(t) in the time domain between system inputs and outputs has characteristics depending on the input signal. For this verification, we need an impulse response, so let's start with the main points about an impulse signal. Impulse response is not something we are usually aware of when […]

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Feedback control
Tutorial to Feedback Control [ARM used in Practice]

Control Theory Used in Practice What comes to mind when you hear the word "Control"? Although the image may vary from person to person, many people probably imagine programming robots and other devices to operate as envisioned. The kind of control I will be discussing in this site is not so-called sequence control, in which […]

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Motion Control Applications
Build a pulse-following positioning servo control system using Microcontroller

So far, I have realized positioning motion control using the acceleration command method as a method to follow a motor position trajectory created in advance, and confirmed the effectiveness of this operation. Many actual motor positioning servo systems give pulses as positioning commands. Therefore, in this article, I will try to realize a positioning system […]

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Motion Control Applications
Build a positioning control servo system of DC motor using Microcontroller for practical use

In the previous issue, I applied the PI control method, High-gain feedback method, and 2-degrees of freedom robust method introduced on this site to realize practical speed servo operation with MCU using the LEGO EV3 motor as a theme, and verified the characteristics of each method on an actual device. This time, as a further […]

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Motion Control Applications
Build a speed servo control system for DC motor using Microcontroller for practical use

So far, I have checked the characteristics of each of the LEGO EV3 motor using DC motor with step response (constant value input) of various control methods. In actual operation, the motor is not only used at a constant speed, but is also used in many applications for so-called servo operation, in which acceleration and […]

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Motion Control Applications
Build a robust speed control system for DC motor using Microcontroller for practical use

I will try to apply PI speed control and 2-degree of freedom robust control to a LEGO EV3L motor with an encoder attached to the load side through gears to verify their operating characteristics and effects. I would like to actively adopt these controls if they are easy to implement and effective, even for simple […]

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Motion Control Applications
Build a practical speed feedback control system for DC motor using Microcontroller

With a commercially available driver, the speed of a voltage-controlled DC motor can be easily controlled in an open loop according to the duty ratio when a PWM pulse output from MCU is given. The speed is almost proportional to the duty ratio, but this is the case under no-load operating conditions. The limitation of […]

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Motion Control Applications
Speed control of DC motors using Microcontroller PWM output [Open-loop control]

Using the L-motor of the LEGO® MINDSTORMS EV3, the STM32Nucleo board will actually operate the motor. The EV3 motor has a built-in encoder, so you can not only monitor the speed, but also get feedback for more advanced operation. First, as a starting point for motion control using MCU, I would like to try open […]

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Control Theory used in practice
Fundamentals of Feedback Control using Microcontroller [Extra Edition]

The inverted pendulum is a typical teaching tool of modern control theory. The information that is generally available is either too academic or too much trial-and-error, and there is not much that has been systematically verified so that even beginners can understand it. Application of Modern Control Theory What is an inverted pendulum? Wheeled inverted […]

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Control Theory used in practice
Actuator
Fundamentals of Feedback Control using Microcontroller [Advanced]

In "Fundamentals of Feedback Control using Microcontroller [Application]" I explained PID control, which is used in practice based on classical control theory. PID control is easy to use in the field when the model to be controlled is relatively simple, because the gain can be set sensibly. However, when the influence of parts that could […]

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