Servoassisted

Servoassisted denotes a class of systems in which a servo mechanism provides controlled actuation that augments human effort or autonomous operation. In a servoassisted device, a feedback loop continually compares the desired state with the actual state, using measurements from sensors (such as encoders or force sensors) to drive a servo motor or actuator. The result is smoother motion, higher precision, and the ability to operate at higher speeds or with less manual effort.

Typical components include the sensor, a controller (often PID-based), and an actuator. In use, an operator or a higher-level controller specifies a target position, speed, or force. The servo system then applies torque or linear actuation to minimize error, while compensating for disturbances such as loads or friction.

Applications span manufacturing and robotics, for example servoassisted machining where servo motors govern feed and tool motion; servoassisted steering or braking in vehicles, where a motor or hydraulic servo provides additional assist; and servoassisted prosthetics or exoskeletons that translate user intent into motion with added torque.

Advantages include improved accuracy, repeatability, and responsiveness; reduced operator fatigue and higher throughput. Limitations involve extra complexity, cost, maintenance, and the risk of unintended motion if control systems fail. Proper design, testing, and safety interlocks are essential.

Historically, servo technology matured with the rise of feedback control in the 20th century, underpinning CNC machines, robotics, and automated equipment. The term servoassisted is used across industries to denote augmentation rather than replacement of human input.

See also: servo motor, feedback control, CNC, automation.