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Servo Drive Amplifier

Drive Amplifier courtesy QuickSilver Controls
 

A drive or amplifier to transform the control signal from the motion controller into a higher power electric current or voltage that is presented to the actuator. Newer "intelligent" drives can close the position and velocity loops internally, resulting in much more accurate control.

Usage

A servo drive receives a command signal from a control system, amplifies the signal, and transmits electric current to a servo motor in order to produce motion proportional to the command signal. Typically the command signal represents a desired velocity, but can also represent a desired torque or position. A sensor attached to the servo motor reports the motor's actual status back to the servo drive. The servo drive then compares the actual motor status with the commanded motor status. It then alters the voltage frequency or pulse width to the motor so as to correct for any deviation from the commanded status.

In a properly configured control system, the servo motor rotates at a velocity that very closely approximates the velocity signal being received by the servo drive from the control system. Several parameters, such as stiffness (also known as proportional gain), damping (also known as derivative gain), and feedback gain, can be adjusted to achieve this desired performance. The process of adjusting these parameters is called performance tuning.

Although many servo motors require a drive specific to that particular motor brand or model, many drives are now available that are compatible with a wide variety of motors.

Applications

Servo systems can be used in:

CNC machining

Factory automation

Robotics

 
 

 


Some of our Drive Amplifier Sponsors include...


Advanced Micro Controls Inc

AMCI is a leading manufacturer of specialized position sensing and motion control technology for PLC-based automation systems. AMCI’s unique approach to PLC integration makes it easy for customers to add full motion control to their PLC without having to buy separate software.

Aerotech, Inc

Designer and manufacturer of high quality motion control, linear motion, positioning and robotic systems.

Electromechanical Automation Div - Parker Hannifin

Parker Hannifin offers a wide range of machine and motion control systems to meet any application need.

TRINAMIC Motion Control

Trinamic's state-of-the-art ICs, modules, and PANdrive smart motors enable today's software engineers to quickly and reliably develop highly precise drives that work efficiently, smoothly, and quietly. The accessible, flexible, and easy to use toolkits make world's most powerful technology as easy as 1-2-3.

Technosoft

Technosoft is a leading motion control technology company specialized in the development, design and manufacture of motion control products and custom motion systems. Technosoft is distinguished in its focus on innovative design based on the latest control technology.

© Content credits: Some of this page uses material from en.wikipedia.org .