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Servo Drive & Motor Expert | VFD AC Drive Repair

Posted on 4th Feb 2023

Buy Servo Motor Online

A servo motor is a type of electric motor that is commonly used for precise control of angular position, velocity and acceleration. An inverter, on the other hand, is an electronic device that converts direct current (DC) to alternating current (AC) and regulates the output frequency and voltage.

According to CM Industry Supply Automation, a servo motor is a type of actuator that provides precise control, while an inverter is a device that converts and regulates electrical power. These two components are often used together in industrial and manufacturing applications to control the speed and position of machinery, such as conveyors and robots.

In summary, VFDs control the speed of AC induction motors while Servo Drives control the position, speed, and torque of Servo Motors.

Advantages of Servo Motors

  • Precise control: Servo motors can rotate to precise angles, making them suitable for tasks that require precise position control.
  • High Torque: Servo motors can produce a high amount of torque compared to other types of motors, making them suitable for applications that require a lot of power.
  • Speed control: Servo motors have the ability to control their speed, which is useful for applications where the speed needs to be adjusted.
  • Feedback mechanism: Servo motors come with a feedback mechanism that helps to monitor their position and make adjustments as necessary, which is essential for precise control.
  • Energy Efficiency: Servo motors are more energy efficient than other types of motors, as they only use the energy needed to complete the task at hand.
  • Durability: Servo motors are built to last, with a sturdy construction and rugged components that can withstand harsh environments and heavy use.

Most Popular Servo Motor Applications

  • Robotics: Servo motors are commonly used in robotic systems for precise control of movement and position.
  • Automation: Servo motors are widely used in industrial automation for tasks such as material handling, assembly and packaging.
  • Aerospace: Servo motors are used in aircraft and spacecraft systems for control of flaps, landing gear, and other aircraft components.
  • Medical Equipment: Servo motors are used in medical equipment such as X-ray machines, CT scanners, and MRI machines to precisely control movement and positioning of the equipment.

Servo Motor Working Principle

A servo motor is a closed-loop control system that uses feedback to control the position of a shaft. It consists of a DC motor, a gear train, a position-sensing device (usually a potentiometer), and an electronic control circuit.

The servo motor works as follows:

The control circuit receives a control signal, usually a pulse-width modulation (PWM) signal, from the user indicating the desired position of the shaft.

The control circuit compares the actual position of the shaft (measured by the potentiometer) with the desired position.

Based on the comparison, the control circuit generates an error signal and applies it to the DC motor to adjust its rotation speed.

The gear train converts the rotary motion of the motor into linear motion, causing the shaft to move.

The potentiometer senses the position of the shaft and feeds back the information to the control circuit.

The control circuit repeats the process of measuring the actual position, generating an error signal, and adjusting the motor speed until the desired position is achieved.

This closed-loop control system ensures that the servo motor accurately moves to and maintains the desired position, making it ideal for precise control applications such as robotics, automation, and control systems.

Where can you buy Servo Drives or Servo Motor?

Online marketplaces sell servo drives, even you can try manufacturer's website like Darwin Motion or you can directly contact distributors and suppliers of various brands like Lenze Drive, Siemens Drive, KEB Drive, Danfoss Drive, Yaskawa Drive etc. from CM Industry Supply Automation.

It's advisable to compare prices, features, and delivery options from different sources before making a purchase.