Industrial automation runs on two basic wheels known as “Precise” and “Reliable motion” the backbone that ensures operational efficiency and productivity. At the core of these systems lies the actuator, a crucial device that transforms commands into tangible movement. Without actuator motors, industries can’t achieve successful operations.
Though actuators do not make headlines as frequently as artificial intelligence and machine learning, yet their importance is unparalleled in the contemporary industrial world. Actuators serve as vital components in countless devices, transforming the way we interact with technology in both commercial and residential settings.
Actuators are essential to daily life at home, unlike many high-tech developments mostly utilized in industrial applications. For example, consoles and cabinets designed to hold televisions operate smoothly, allowing users to access their devices easily with a simple button press. Additionally, to enhance functionality and convenience, TV lifts and adjustable tabletops are equipped with actuators, making it easy for users to adjust them using electric switches or buttons.
ETI Systems is a leading supplier dedicated to providing innovative and reliable solutions, setting the standard for actuator technology.
In this guide, we’ll explore what actuators are, their role in industrial automation, and how they differ from other components. We’ll also cover the various types of actuators, their applications, and practical tips for selecting the right one for your needs.
What Does Actuator Mean?
An actuator is a mechanical device that transforms various types of energy into movement. This energy can originate from sources such as electricity, hydraulic pressure, or compressed air. Depending on its specific use, the movement produced by an actuator can be either linear (straight-line) or rotary (circular).
Actuators play a crucial role in the instrumentation systems that drive modern machines. These devices enable machines to engage with their environment in various ways.
In industrial settings, actuators bridge the gap between a control signal and the physical action needed to execute a task. For instance, when a control system sends a signal to open or close a valve, the actuator does the heavy lifting, enabling the motion.
Actuator vs. Motor: How Are They Different?
Motors are electromechanical devices that transform electrical energy into continuous rotational motion. They are mostly employed as power sources for equipment, allowing for operations like pumping, fans, and conveyor belts that need constant rotation14.
Conversely, actuators transform different energy types—such as hydraulic, pneumatic, or electrical—into mechanical motion. They are made to carry out particular tasks, frequently under control, like lining up a robotic arm26 or opening a valve.
Types of Actors & Motors
Motors are distinguished by their capacity to run at high speeds and for prolonged periods of time. They provide constant rotating movement.13.
Although actuators can produce both linear and rotary motion, they usually concentrate on precise positioning within a constrained range (e.g., 90°, 180°). They are designed for regulated motion rather than constant rotation136.
Role in Industrial Automation
In industrial automation systems, both motors and actuators are essential components:
Many automated systems rely on motors as their main power source. Motors power necessary equipment and permit operations that need constant power. Due to their high speed, motors are appropriate for jobs like material handling and assembly line operations.
Actuators are essential for control systems to carry out commands. Applications like robotics, valve control, and other mechanisms that need accurate placement make it possible to control movements precisely. This accuracy is essential for industrial processes to remain safe and efficient.
Actuator vs. Sensor: Key Differences
In industrial automation, sensors and actuators are essential parts that play different but complimentary functions. For systems to be designed and operated effectively, it is essential to comprehend their distinctions.
Definitions
Sensors are instruments that assess and identify physical characteristics or circumstances in the surroundings and then translate these observations into electrical impulses. They supply information for control and monitoring systems.
Actuators are machines that efficiently convert electrical orders into mechanical motion by receiving control signals from a system, typically electrical, and responding with physical actions or movements.
Key Differences
| Parameter | Sensor | Actuator |
| Function | Converts physical characteristics into electrical signals. | Converts electrical signals into physical actions. |
| Input Source | Receives input from environmental changes. | Receives input from the system’s control signals. |
| Output Generation | Generates electrical signals for processing by systems. | Generates mechanical movement or other physical outputs. |
| Type of Output | Electrical signals (e.g., voltage, current). | Mechanical actions (e.g., motion, heat). |
| Placement | Typically located at the input of a system. | Usually positioned at the output of a system. |
Types of Actuators and Their Applications
Actuators are available in a variety of types, each designed for specific functions within industrial automation. One of the most prevalent types include;
Electric actuator
Electric actuators are valued for their precision and efficiency. They are essential components in automation systems that demand precise control, making them ideal for applications such as robotic arms and actuator valves.
Their ability to provide accurate responses positions electric actuators as a top choice for modern industrial processes.
Advantages:
- Highly precise
- Low maintenance
- Energy-efficient for continuous use
Hydraulic Actuators
Pressurized liquid is what hydraulic actuators use to produce strong motion. They are perfect for heavy-duty uses such as large-scale industrial machines or construction equipment.
Benefits:
- Easily manages large loads
- dependable under challenging conditions
Pneumatic Actuators
Pneumatic actuators use compressed air to provide dependable, fast motion. They are frequently encountered in fields like packaging and fluid control, where quickness and lightweight designs are crucial.
Benefits:
- Quick reaction times
- economical for light-duty operations
Mechanical Actuators
Levers and gears are examples of physical mechanisms used by mechanical actuators to generate motion. These are easy to use, long-lasting, and perfect for simple systems.
Benefits:
- Little upkeep
- Simple design
Applications of Actuators in Industrial Automation
Innumerable industrial processes depend on actuators. They are particularly strong in the following two areas:
Systems for Fluid Control
Actuators operate valves to control the flow of gases or liquids in fluid control systems. In industries such as water treatment and oil processing, an electronic valve actuator ensures safe and effective fluid management by precisely adjusting valve positions in pipelines.
Systems of Motion
Actuators drive robotic arms, conveyor belts, and positioning systems in motion systems. These applications are indispensable for sectors like logistics and automobile manufacturing, where accuracy and speed are crucial.
Mistakes To Avoid When Buying An Actuator
Choosing the wrong actuator motor can lead to unexpected downtime and even critical equipment failure in industrial automation. Here are a few pitfalls to avoid:
Mistake 1 – Ignoring Load Requirements:
Using an actuator motor that can’t handle the system’s load can lead to breakdowns, underperformance, and even safety hazards in operational processes. Always ensure the actuator is rated for the specific load requirements to maximize effectiveness.
Mistake 2 – Overlooking Environmental Conditions:
Factors like temperature, humidity, and exposure to corrosive substances can severely impact actuator motor performance over time. Consider these conditions to select an actuator that can withstand harsh environments, ensuring longevity and reliability.
Mistake 3 – Choosing the Wrong Motion Type:
Not all industrial automation applications require the same motion—linear or rotary. Selecting the wrong motion type can complicate operations, resulting in inefficiencies and increased costs. Always assess your application’s specific movement needs before deciding.
Actuator Replacement: When Is It Necessary?
Actuators ultimately need to be replaced, even the greatest ones. Wear and tear can diminish efficiency over time, and new technology may make older versions outdated. When it’s time for a replacement, look for
- Visible wear or damage
- Sluggish response times
- Increased maintenance needs
- Compatibility issues with upgraded systems
In the long term, replacing antiquated actuators with more contemporary models can lower operating costs and improve performance.
Customized Approaches to Enhance Performance
Standard actuators do not always satisfy the particular requirements of each industrial application. We can solve specific needs with tailored solutions, such as meeting strict load requirements or adapting to harsh locations.
For instance, a specially designed electric valve actuator can manage certain difficulties in fluid control systems, guaranteeing smooth operation and integration. Working with reliable manufacturers guarantees that your actuators are long-lasting and produce reliable results.
Trust ETI Systems for Your Actuator Needs
Actuators are essential for industrial automation, bringing systems to life and ensuring smooth, efficient operations. Their applications are diverse and impactful, from fluid control to motion systems. Understanding the differences between actuators, motors, and sensors—and knowing how to select the right type—can significantly enhance your processes.
We at ETI Systems have been honing our skill for decades. Our actuators are constructed with your unique requirements, longevity, and accuracy in mind. We are here to support the success of your company, whether you require a hydraulic system, an electric actuator, or a customized solution.
Together, let’s fuel your industrial automation’s future. For additional information or to view our entire selection of actuator solutions, get in touch with us right now.