Difference between Stepper and Servo Motor | Servo और Stepper Motor कैसे काम करता है ?

NO MORE ratta maar

7 Jul 202111:54

Summary

TLDRThe video script discusses the differences and similarities between servo motors and standard motors, focusing on their applications and control mechanisms. It explains how servo motors, unlike standard motors, require a power supply and a controller to function. The script delves into the construction and control of servo motors, emphasizing their precision and the closed-loop system that provides feedback for accurate operation. It also touches on the cost-effectiveness of servo motors due to their ability to control speed and position with high precision, making them ideal for various applications like robotics and 3D printing.

Takeaways

😀 The video discusses the differences and similarities between servo motors and universal motors, focusing on their applications and how they operate.
🛠️ Servo motors are crucial in many applications, especially in robotics, where precise control of motion is required.
🔌 The script explains that universal motors cannot be powered by a power supply and are controlled by a microcontroller and driver that manage the power supply to the motor.
🔄 The discussion highlights the importance of understanding the construction and control methods of motors, especially servo motors, for effective operation.
🔩 The video script mentions that servo motors are used in applications requiring free size control, such as rotating 10 degrees or more, depending on the requirement.
🏎️ It compares the operation of motors in different scenarios, like the example of a motor that stops immediately when the power supply is cut, due to the inertia of its parts.
🔧 The script delves into the technical aspects of motors, explaining the difference between stepper motors and servo motors, and how they are classified and used in various systems.
💡 The video emphasizes the concept of closed-loop systems in servo motors, where feedback from the motor is used to control its operation, as opposed to open-loop systems.
⚙️ It explains how components like encoders and control circuits are integrated into servo motors to create a system that can accurately control the motor's rotation.
📊 The script also touches on the economic aspect, noting that servo motors are more expensive due to the precision control they offer compared to stepper motors.

Q & A

What is the main topic discussed in the video?
-The main topic discussed in the video is the differences and similarities between servo motors and universal motors, their applications, and how they work.
Why are servo motors considered important in the context of the video?
-Servo motors are considered important because they are frequently asked about in motor-related questions, especially when it comes to special motor categories.
What is the role of a microcontroller in controlling a motor?
-A microcontroller acts as an intermediary between power supply and the motor, controlling the motor's operation and ensuring it functions as intended.
How does the video explain the concept of a closed-loop system in motors?
-The video explains that a closed-loop system in motors involves feedback mechanisms, such as a potentiometer, which provides information about the motor's rotation to the control circuit, allowing for precise control.
What is the difference between a servo motor and a universal motor as discussed in the video?
-The video suggests that while both are types of motors, servo motors are part of a closed-loop system that provides feedback for precise control, whereas universal motors may not have such feedback mechanisms and are considered open-loop systems.
How does the video describe the construction and control of a servo motor?
-The video describes the construction of a servo motor involving components like a motor, encoder, and control circuit. It is controlled using a driver and microcontroller, which manage power supply and ensure the motor operates within desired parameters.
What is the significance of the number of poles in a motor as mentioned in the video?
-The number of poles in a motor determines its speed and torque characteristics. More poles typically result in higher torque but lower speed, which is an important consideration in motor design and application.
How does the video differentiate between different types of DC motors?
-The video differentiates DC motors by their construction, winding, and principles of operation. It mentions various types like induction motors, brushless DC motors, and stepper motors, each with distinct characteristics.
What is the function of a gear box in the context of motor control as discussed in the video?
-A gear box is used to adjust the speed and torque of a motor. It can increase or decrease the speed and torque according to the requirements of the application, allowing for better control and performance.
How does the video explain the cost difference between servo motors and other types of motors?
-The video explains that servo motors are more expensive due to the additional components and systems they require, such as encoders, control circuits, and drivers, which enable closed-loop control and precise operation.
What is the purpose of a potentiometer in a servo motor system as described in the video?
-A potentiometer in a servo motor system provides feedback to the control circuit about the motor's position and rotation. This feedback is crucial for closed-loop control systems to ensure the motor operates accurately and as intended.

Outlines

00:00

🔧 Understanding Servo Motors and Their Applications

The first paragraph delves into the intricacies of servo motors, contrasting them with standard motors. It emphasizes the importance of understanding the differences and similarities between these motors, especially in the context of interviews and technical discussions. The paragraph explains that servo motors are controlled by a microcontroller or driver, which manages the power supply to the motor. It also touches on the practical applications of servo motors, such as in robotics and automation, where precise control is required. The discussion highlights the unique construction and control mechanisms of servo motors, which allow for precise movement and positioning, unlike standard motors that cannot be powered on and off without stopping.

05:02

🔄 Exploring Closed-Loop Systems in Servo Motors

The second paragraph focuses on closed-loop systems, which are crucial for the operation of servo motors. It explains the concept of a closed-loop system using the analogy of a bike ride, where the rider adjusts the speed based on feedback from the speedometer. The paragraph contrasts closed-loop systems with open-loop systems, where feedback is not used to adjust the operation. It details how servo motors use feedback from potentiometers to adjust their operation, ensuring precise control. The discussion also covers the components of a servo motor system, including the motor, gears, encoders, and control circuits, which work together to provide the desired movement and positioning.

10:02

🛠 Advanced Configurations and Applications of Servo Motors

The third paragraph discusses advanced configurations of servo motors, including their use in 3D printers and other technologies. It explains how servo motors can be adapted for various applications, such as controlling the speed and direction of a 3D printer's movements. The paragraph also touches on the importance of understanding the technical aspects of servo motors, such as their wiring and control systems, for effective use in different machines and devices. The discussion highlights the versatility and adaptability of servo motors, which can be configured for a wide range of tasks and environments.

Mindmap

Keywords

💡Servo Motor

A servo motor is a rotary actuator that allows for precise control of angular position, typically used in robotics and automation. In the context of the video, the servo motor is discussed as a key component in various applications due to its ability to provide precise control over movement. The script mentions how servo motors are used in applications requiring specific degrees of rotation, such as in robotics where precise movement is crucial.

💡Microcontroller

A microcontroller is a small computer on a single integrated circuit that can be programmed to perform specific tasks. In the video script, the microcontroller is mentioned as a device that interfaces with the servo motor, controlling its operation by managing the power supply and issuing commands to achieve desired movements.

💡Feedback

Feedback in control systems refers to the return of a portion of the output signal to the input, which is used to correct the system's behavior. The script explains how feedback is crucial in closed-loop systems like servo motors, where the control system receives information about the motor's position and adjusts accordingly to ensure precise movement.

💡Encoder

An encoder is a device that converts information from one form or format to another, often used to provide feedback on position, velocity, or sometimes even acceleration. In the video, encoders are discussed as part of the servo motor system, where they provide feedback on the motor's position to the control circuit, aiding in precise control.

💡Control Circuit

A control circuit is an electrical circuit that manages the operation of a device or system, often involving the use of sensors, controllers, and actuators. In the context of the video, the control circuit is integral to the servo motor system, interpreting signals from encoders and other sensors to manage the motor's operation.

💡Closed-Loop System

A closed-loop system is one where the output of the system is measured and used as feedback to control the system's operation. The video script emphasizes the importance of closed-loop systems in servo motors, where feedback from encoders and other sensors allows for precise and accurate control of the motor's movement.

💡Open-Loop System

An open-loop system is one where the system's operation is not controlled by feedback from its output. The script contrasts open-loop systems with closed-loop systems, explaining that while open-loop systems are simpler and less expensive, they lack the precision and control afforded by feedback mechanisms.

💡Stepper Motor

A stepper motor is a type of brushless motor that divides a full rotation into a number of equal steps, allowing for precise positioning. The video script discusses stepper motors in comparison to servo motors, highlighting their use in applications where high precision is not as critical as cost-effectiveness.

💡Torque

Torque is the force that can cause an object to rotate around an axis. In the context of the video, torque is an important characteristic of motors, as it determines the motor's ability to move or hold a load. The script mentions how the control system can adjust the motor's torque to achieve desired movement.

💡Gearbox

A gearbox is a transmission device that changes the speed and torque of a motor. The script refers to gearboxes as part of the servo motor system, where they can be used to increase the torque and reduce the speed of the motor, allowing for greater control and efficiency in certain applications.

Highlights

Discussing the differences and similarities between servo motors and universal motors.

Explaining the importance of understanding servo and universal motors in interviews.

Describing how servo motors are controlled by a microcontroller and a driver.

Mentioning the application of servo motors in robotics for precise control.

Highlighting the free-size control provided by servo motors in various applications.

Exploring the construction and control methods of servo motors that enable precise movement.

Discussing the concept of closed-loop systems in servo motors and their importance.

Differentiating between stepper motors and servo motors in terms of control and feedback.

Comparing the construction and winding of DC motors with servo motors.

Explaining the classification of motors and the principles behind their operation.

Discussing the cost-effectiveness of servo motors due to their control systems and components.

Describing the open-loop system of stepper motors and their lack of feedback mechanism.

Mentioning the precision control provided by servo motors due to their closed-loop system.

Exploring the use of encoders and control circuits in servo motors for accurate positioning.

Discussing the role of gear boxes in servo motor systems for speed and torque control.

Comparing the feedback mechanism in servo motors to the human body's sensory feedback.

Highlighting the versatility of servo motors in various applications like 3D printers and CNC machines.

Providing insights into the construction and control of stepper motors for precise movement.

Discussing the importance of understanding the principles of motor operation for effective control.