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Stirling power generating system, which has the advantages of multiple energies applicable and high efficiency, is promising for aerospace applications. As the main part of Stirling power generating system, single-phase oscillating permanent-magnet linear machine (PMLM) is investigated in this paper. Firstly, the electromagnetic performances, such as no-load back electromotive force (EMF) and thrust,...
A study on haptic feedback of the master side for an interventional surgical robot system plays a critical important role in the master-slave vascular interventional surgery robot system with haptic feedback, and accuracy control of force feedback is an important means to improve accuracy of the vascular interventional surgery robot teleoperation. Focus on the problem of lacking haptic feedback and...
Neurological intervention surgery (NIS) is surgery branch vascular interventional surgery, one kind of the minimally invasive. And it has become the mainstream of the treatment in the cerebrovascular disease. Robotic surgery system with the functions of haptic feedback and the doctor-patient separation has enormous significance for the development of NIS. However, in previous studies, the haptic feedback...
Robotically controlled steerable guidewire navigation systems has been paid much attention to, because it can allow the surgeons to be released from radiation and heavy radiation protection garments, reduce radiation exposure, increase precision and stability of motion, and add operator comfort. The aim of the study was to improve the precision of axial motion, rotational motion and force measurement,...
Minimally invasive interventional surgery shows its advantages compared to traditional operation. The master-slave robotic system technology can further significantly improve the accuracy, efficiency and safety of this complicated and high risk operation. However, one of the critical issues in the robotic system, guide wire force feed-back, needs more research. The mechanical structure of the salve...
The interventional surgery is a minimally invasive treatment, which uses the modern high technology. It takes the special catheter, guide wire and other precision instruments to import in the body to do the pathological diagnosis and local treatment under guide of medical imaging equipment. Interventional surgery has excellent characteristics like no operation, small trauma, rapid recovery, etc. It...
During cardiovascular and cerebrovascular interventional surgical procedure, the accuracy of guide wire advance is particularly important for the success rate and safety of surgery, a single PID controller can't adapt to the complex surgical situations, the performance of the system has much room for improvement. In this paper, a fuzzy PID control algorithm with guide wire feedback force was proposed...
Lighting control in smart buildings and homes can be automated by having computer controlled lights and blinds along with illumination sensors that are distributed in the building. However, programming a large building light switches and blind settings can be time consuming and expensive. We present an approach that algorithmically sets up the control system that can automate any building without...
Force regulation is a challenging task of forceps used for robot-assisted surgical manipulation. To avoid excessive force applied on soft tissues, sophisticated sensors with computerized precise control are often required. Without using additional electronic elements, this paper presents a passive mechanism to maintain a constant contact force between forceps jaw tips and tissues given a pre-specified...
We present a two-axis microelectromechanical systems (MEMS) lens aligner with a 260 μm × 220 μm translation range that positions a 6.35 mm lens with focal length f = 12.1 mm for alignment compensation of free-space optical interconnects (FSOIs) between computer servers separated by 50 mm spacing. Efficient ultrasonic linear piezoelectric motors (PMs) provide actuation with zero power required to hold...
In electrospinning, the addition of salts results in a higher charge density on the surface of jet. The theoretical analysis shows that the relationship between radius r of jet and the axial distance z from nozzle follows an allometric law in the form r ~ z-0.5 in case of full surface charge, and the scaling exponent becomes larger when the jet has part surface charge. Theoretical analysis also showed...
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