Actuation

Actuation refers to the process of converting energy into motion in various systems and devices. It’s a crucial component in a myriad of technologies, ranging from simple mechanisms to complex machinery.

Actuation is the mechanism of initiating and controlling movements in various systems, which could be mechanical, electrical, hydraulic, or pneumatic, among others. This concept is widely used in industries like robotics, automotive, aerospace, and manufacturing. It encompasses a wide range of components and techniques designed to convert various forms of energy into physical motion.

Process and Industrial Valves 2007

UK-based supplier of compressed air and fluid processing systems, Thorite, has produced two new process product catalogues, each designed to make the selection of components from a variety of top quality manufacturers fast and straight forward.

Actuation packages

The Chergui gas field, located on and around Kerkennah Island, near Sfax, Tunisia, was discovered as part of the West Kerkennah exploration permit granted in the late 1970's with preliminary reserves estimates of 50 billion standard cubic feet (SCF) under the anticipated development programme.

Swagelok SK multipurpose ball valves

EXm rated valve actuation coil

Alcon Solenoid Valves' new EXm rated valve actuation coil is providing precise dosing control for a new additive injection system designed specifically to handle the integration of biofuels into the domestic fuel market at the refinery.

Rotork wins valve actuation contract

Rotork Fluid Systems has received an order for the actuation of valves in the feed gas preparation area of the Pearl GTL project.

New SIPOS service brochure

A new brochure from SIPOS Aktorik provides comprehensive details of the company’s service and support for its variable speed actuation technology.

ETV100 linear actuators

The new ET Electrothrust range of ETV100 linear actuators from Parker Electromechanical is derived from the proven ET100 electric cylinder and uses the same basic design in combination with higher performance key components.

Smart positioning with HART protocols

UK-based manufacturer Midland-ACS, has developed a control system capable of operating in the harsh environment of gas turbine heat recovery systems destined for the Al Shaheen oil field in Qatar.

Rotork orders for gas developments

In the latest of several similar contracts in the Middle East, Rotork electric, hydraulic and pneumatic actuators have been ordered for two major new gas developments in the UAE.

316SS disc

Tomoe, a butterfly valves, actuation and control systems company, has launched its new 316SS stainless steel disc.

Actuation

The primary devices that carry out actuation are called actuators. These can be categorized as:

  1. Mechanical Actuators: Convert rotary motion to linear motion or vice versa, often using gears, rails, or screws.
  2. Electric Actuators: Utilize electric motors to generate motion, controlled by varying voltage, current, or electromagnetic fields.
  3. Hydraulic Actuators: Use the pressure of a liquid (usually oil) to induce motion, often to generate high forces in heavy machinery.
  4. Pneumatic Actuators: Operate using compressed air or gas to create motion, often found in industrial automation setups.
  5. Thermal or Magnetic Actuators: Leverage thermal expansion or magnetic fields to generate motion, usually in micro or nano-scale applications.

2. Control Systems

These systems are essential in regulating the functioning of actuators, often utilizing feedback loops to maintain precision and efficiency. They may include:

  1. Manual Controls: Simple interfaces like levers or switches to control actuators.
  2. Automatic Controls: Utilize sensors and microcontrollers to automatically control the actuation process.
  3. Software Interfaces: Complex control setups involving software platforms integrated with hardware components to enable sophisticated control strategies.

3. Power Sources

Different actuation systems require different power sources, which could range from electrical batteries, hydraulic pumps, or pneumatic compressors.

Applications

Actuation finds its application in various fields:

  1. Robotics: In the control of robotic arms, legs, or other appendages.
  2. Aerospace: Utilized in the functioning of various components like flaps, landing gear, and engines.
  3. Automotive: In control systems like power steering, braking systems, and throttle control.
  4. Industrial Machinery: In machines used for manufacturing, packaging, and other industrial processes.
  5. Healthcare: In devices like prosthetics and other healthcare equipment.
  6. Consumer Electronics: In gadgets and appliances, for functions like zooming in cameras or adjusting settings.

Future Trends

With advancements in technology, actuation systems are expected to become more sophisticated, incorporating features like:

  1. Internet of Things (IoT): Integration with IoT for smarter and more connected control systems.
  2. Artificial Intelligence (AI): Incorporating AI for predictive maintenance and automated control strategies.
  3. Miniaturization: Development of smaller and more compact actuators for use in micro and nano-scale applications.

Conclusion

Actuation is a dynamic and evolving field, playing a critical role in modern technology and industry. It encompasses a wide range of components, systems, and techniques that convert energy into physical motion, finding applications in a variety of sectors and continually evolving to incorporate new advancements and innovations.