The objective of this project is to devise an online control policy for a particular multi-legged robot. The conceptual robot named robotic all-terrain surveyor (RATS) has 12 legs equally distributed over a spherical surface, approximately the size of a soccer ball. The objective of this system is to have the capability to circumvent complex obstacles through rough terrain. Each leg consists of...

This work presents a new electrolysis-based microelectromechanical systems (MEMS) diaphragm actuator. Electrolysis is a technique for converting electrical energy to pneumatic energy. Theoretically electrolysis can achieve a strain of 136 000% and is capable of generating a pressure above 200 MPa. Electrolysis actuators require modest electrical power and produce minimal heat. Due to the large ...

In minimally invasive surgery, tactile feedback is lacking. A tactile display, consisting of a matrix of micro-actuators, represents tactile sensations on the fingertip. Miniaturising powerful, dynamic and accurate actuators with a sufficient stroke and bandwidth is a considerable challenge. The use of pneumatics is promising due to the potential for high power density. This paper discusses a p...

conveying velocity, pipe wear, and particle degradation. An experimental study has Yuji Tomita addressed the characteristics of swirling flow pneumatic conveying (SFPC) for the Professor, total pressure drop, solid flow patterns, power consumption, and additional pressure Department of Mechanical Engineering, drop. Polystyrene, polyethylene, and polyvinyl particles with mean diameters of 1.7, K...

Among the power drills (Electrical/Pneumatic/Battery) used in Orthopedic surgery, battery drill has got several advantages. Surgeons in low resource settings could not routinely use Orthopedic battery drills (OBD) due to the prohibitive cost of good drills or poor quality of other drills. "Hardware" or Engineering battery drill (HBD) is a viable alternative to OBD. HBD is easy to procure, rugge...

Wave energy production is one of the most environmentally benign ways to generate electricity. For building of the power stations, that using sea wave motion to generate hydro-pneumatic pressure, which is then transformed into electricity, is necessary to know the characteristics of the sea waves in the interest area. To obtain realistic estimated wind-generated waves for the bottom topography,...

BACKGROUND Treatment of achalasia is focused on decreasing the resting lower esophageal sphincter by either pneumatic dilation or surgical myotomy. When patients symptomatically relapse after one or more pneumatic dilations, then one explanation is to consider the possibility of pseudoachalasia as the diagnosis. CASE REPORT We present a rare case of an elderly patient with a presentation of c...

BACKGROUND To investigate the incidence of pulmonary embolism and risk factors for this condition after obstetric and gynecologic surgery, as well as the efficacy of intermittent pneumatic compression. METHODS A total of 6,218 patients operated at Keio University Hospital excluding obstetric or infertility-related surgery and uterine cervical conization were evaluated retrospectively to deter...

Perioperative nurses are likely to encounter the use of pneumatic tourniquets in a variety of operative and invasive extremity procedures. Use of a pneumatic tourniquet offers an opportunity to obtain a near-bloodless surgical field; however, the use of tourniquets is not without risk. Unfavorable outcomes include pain, thrombotic events, nerve compression injuries, and disruption of skin integ...