Servo System
Servo System - Related Videos
06:20
Imaging Leukocyte Adhesion to the Vascular Endothelium at High Intraluminal Pressure
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Cited by 22 •
2011
This is a method to visualise leukocyte adhesion to the endothelium in harvested pressurised vessels. The technique enables studying vascular adhesion under shear flow with differing intraluminal pressures up to 200 mmHg thus mimic-ing the pathophysiological conditions of high blood pressure.
10:41
Method to Measure Tone of Axial and Proximal Muscle
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Cited by 5 •
2011
We have developed a device (Twister) to study the regulation of tonic muscle activity during active postural maintenance. Twister measures torsional resistance and muscular responses in standing subjects during twisting of the body axis. The device can be flexibly configured to study various aspects of tonic control across the neck, trunk, and/or hips.
08:59
Modeling and Experimental Analysis of the Single-Shaft Coaxial Motor-Pump Assembly in Electrohydrostatic Actuators
0 Views •
Cited by 1 •
2022
We built a simulation model to evaluate pump flow characteristics and performance of the single-shaft coaxial motor-pump assembly in electrohydrostatic actuators and investigate the overall efficiency in a wide set of working conditions of the motor-pump assembly experimentally.
09:43
Video-oculography in Mice
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Cited by 24 •
2012
Video-oculography is a very quantitative method to investigate ocular motor performance as well as motor learning. Here, we describe how to measure video-oculography in mice. Applying this technique on normal, pharmacologically-treated or genetically modified mice is a powerful research tool to explore the underlying physiology of motor behaviors.
06:45
Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
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2022
In this paper, an adaptive filter based on a normalized least mean square (NLMS) algorithm and a rotational speed estimation method are introduced to detect the electrical and hydraulic faults of the electro-hydrostatic actuator (EHA). The efficacy and feasibility of the aforementioned methods are verified through simulations and experiments.
FAQs
Feedback is the mechanism that lets a servo system correct the difference between a commanded output and the machine’s actual response. An encoder or resolver supplies the measured position, speed, or torque, and the controller uses that information to adjust the actuator. This continuous comparison helps maintain precision when commands change or disturbances affect motion.
The controller performs the decision-making step: it calculates the error from the command and sensor feedback, then directs an actuator to reduce that error. Motors, drives, controllers, and feedback devices form the main coordinated elements. Their integration allows the machine to translate control decisions into regulated motion rather than treating each component independently.
Rapid response allows the system to follow changing commands and react to disturbances before they produce large deviations from the desired output. This behavior is important where position, speed, or torque must remain accurate during motion. In engineering systems, improved response contributes to dynamic performance, while feedback-based correction supports accuracy and repeatability.
Operation begins with a commanded position, speed, or torque. A feedback device measures the corresponding machine output, and the controller compares the measurement with the command to determine error. It then adjusts the actuator, after which the output is measured again. Repeating this sequence reduces error and keeps motion aligned with the intended result.
They are applied wherever automated motion requires accurate regulation, including robotics, CNC machinery, aerospace systems, and camera stabilization. These applications use the same feedback-based approach for different motion objectives, such as positioning, speed control, or torque regulation. Their relevance in engineering comes from combining precision, repeatability, rapid response, and efficient machine operation.
Evaluation typically focuses on how closely the machine follows its command and how consistently it responds over repeated operation. The system can provide improved accuracy and repeatability while also supporting efficiency and dynamic performance. These outcomes help engineers judge whether regulated position, speed, or torque meets the requirements of an automated machine or motion platform.