University of Vigo posted this:New wheel slip reset controller for brake systemsThe main motivation for using reset control is the overcoming of fundamental limitations or trade-offs of conventional controllers: with the conventional controllers if we want a fast braking response, the system is fragile and sensitive to uncertainties; and if we want a robust system, this requires slower braking actions. Reset control is a novel technique that achieves more robust and fester braking responses in a way that no other conventional controller is able to produce.
UATEC - Unidade de Transferência de Tecnologia posted this:Variable flow pump for longitudinal displacementA Portuguese University has developed an invention consisting of a new concept of flow variation in a vane pump that allows to bypass the concepts now patented and used. This invention therefore relates to a variable displacement vane pump and the variations in the fluid’s flow rate conveyed by the pump for a given rotation is achieved by changing a longitudinal length of the chambers, and not by changing the eccentricity between the ring and the rotor. This is the main difference between this and the variable flow vane pumps currently available. The university is looking for companies that develop and produce oil pumps to license this technology.
DIT Hothouse posted this:iSeal: Advanced Surface Treatment for Protection against TribocorrosionThis invention is based on the application of a hybrid organic/inorganic treatment onto an exposed surface – either as a stand-alone treatment or as a sealant. The treatment is applied using an electrochemical deposition technique, allowing for the development of conformal coatings, irrespective of design complexity. Layer thicknesses are low (10-100nm) but resistance in corrosive marine environments indicate corrosion rates comparable to technologies currently employed by the aerospace and automotive industries. Corrosion rates are reduced by between 103 and 105 times, dependant on the nature of the porous coating. Tests on metallic coatings indicated a reduction in corrosion rates of approximately 103-104 while tests on ceramic coatings indicated a reduction in corrosion rates of approximately 105. By applying the hybrid treatment as a sealant treatment onto a porous wear resistant coating, concerns regarding the effect of mechanical damage are dramatically reduced. In addition, surface roughness levels are similar to electropolished finishes.
Universidad de Alcalá-OTRI posted this:Portable device to measure the displacement maps on surfaces in the three spatial directionsA Spanish research group from the Department of Signal Theory and Communications of the University of Alcalá along with a Spanish research group from the Department of Mechanical and Mining Engineering of the University of Jaén has developed a portable optoelectronic device to measure the displacement of each surface element in an object when is subjected to deformation. In particular, the device allows obtaining maps of long range displacement (greater than mm) in dynamic regime (in real time). Thus this system is very useful in the experimental study of the materials’ mechanical properties, especially if they suffer large deformations at high speed. It is a computationally simpler alternative and more inexpensive than the digital mapping technique for 3D images which is currently the only one allowing such measures. The group seeks licensing agreements, collaborative and commercial agreements with technical assistance.
UNIVERSIDAD DE ALICANTE posted this:Noble metal-free ceria-based diesel soot combustion catalyst, suitable for gas purification in Diesel engine exhaustsThe developed catalyst does not use Pt, which leads to a cheaper product. The resulting catalyst shows equal or even better performance as Pt catalysts. Following the patented procedure of synthesis, the catalyst produced has a lower particle size. This leads to higher surface per particle and therefore, a better ratio yield when interacting in oxidation reactions, leading to a higher oxygen production rate.
Universidad de Cádiz posted this:New nanostructured catalyzers without noble metals and with low content in lanthanidesSince the 1990's, the mixed oxides of cerium and zirconium have replaced cerium oxide in the composition of the three-way catalyzers used in the automotive industry. The fundamental reason for this is the improved textural behaviour of the oxides of Ce/Zr, compared with the effectiveness of cerium oxide. These mixed oxides are also more effective in the exchange of oxygen with the medium. The Oxygen Storage Capacity (OSC) of the compound is therefore the key property for its application as a component in catalyzers. However, the rare earth metals which are the critical component of these catalyzers have currently increased considerably in price, due to greater demand and limited supply from the few exporting countries. The research group working in this field has been able to obtain nanostructured oxides of Ce/Zr and Ce/Zr/Y with low content in Ce that present very good oxygen storage properties. In addition, costly noble metals are not employed in their formulation, which represents an important economic advantage.
UATEC - Unidade de Transferência de Tecnologia posted this:Planar diamond thermistors for harsh environments: applied to temperature measurements in combustion and jet engines for the automobile and aerospace industry, lasers, fuel cells and in biological and aggressive chemical environmentsThe new diamond thermistors can be used for temperature measurements in harsh environments such as aggressive chemicals at high temperature or in biological media due to their inertness. Furthermore, the sintered ceramic substrate guarantees superior adhesion and resistance to fracture under high mechanical loads. The fabricated temperature sensitive diamond surface comprises well adhered ohmic contacts deposited on the backside of the dielectric ceramic substrate. This configuration prevents interaction between the temperature sensitive surface and the surrounding environment which is essential for biochemical devices applications. Furthermore, the planar geometry of the disclosed thermistor maximizes the contact region between the temperature sensitive surface and any solid flat surface on which it is placed. In this way, improved response times are obtained comparing to traditional round shaped thermistors.
Universidad de Alcalá-OTRI posted this:New Active Assisted Driving Systems based on Computer Vision and Laser.- These systems support the conduction as an alert to the conductor in situations of imminent danger or when the conduction is not suitable. - The developed systems show a high capacity of anticipation and a percentage of false alarms practically null. - The group has developed several types of techniques of attendance to the conduction based fundamentally on vision by computer and laser.
UNIVERSIDAD DE ALICANTE posted this:Energy absorbing device in motor vehicle collisionsResearchers at the University of Alicante have devised a system to partially absorb the energy generated in a crash involving at least one motor vehicle traveling at a high or medium speed. It is a passive protection system for vehicles which absorbs the maximum amount of mechanical energy in a crash with minimal added weight and volume. Assumes additional protection that enhances the vehicle's passive safety, minimizing the consequences of a collision for the passengers. The system has an innovative design that allows placing it in different positions inside the vehicle or making structural parts and is manufactured with advanced materials. Innovative aspects The system is designed to provide protection that goes beyond the current regulations for passenger cars, as it is able to absorb a larger proportion of the mechanical energy generated in a collision. Also improve the passive safety of vehicles (vans, trucks) or special vehicles (ambulances, fire trucks, armored vehicles) in circulation. It also provides substantial improvements for heavy duty vehicles, contrary to what is happening now should be able to absorb themselves much of the energy produced in a collision with a vehicle lighter, thereby minimizing the potential damage that may occur in people who travel light vehicle. The system consists in several stages which act consecutively on impact, absorbing energy in a gradual and proportional to the energy generated in the collision, which is a lower acceleration on passengers, thereby reducing the potential injuries. Less weight, volume and system size compared to traditional structural systems, through the use of advanced materials: tensile filaments that act in case of collision, thermosets broken links which act by absorbing the impact energy generated in the fiber and combined with high strength composite metal / polymer composite micro / nanostructures
RAMOT at Tel Aviv University Ltd. posted this:Miniature Air Vehicle Controlled and Propelled by Active Flow ControlMiniature Air Vehicle Controlled and Propelled by Active Flow Control Project ID : 9-2007-79
RAMOT at Tel Aviv University Ltd. posted this:Automatic Flow Control for increasing drag in aircraft wingsAutomatic Flow Control for increasing drag in aircraft wings Project ID : 9-2013-548
RAMOT at Tel Aviv University Ltd. posted this:Effective cooling of ICs with microchannel heatsinkA miniature heat sink containing microchannels for extremely effective forced air cooling of high power electronic devices. Multiple vortex rings are generated and propagate along the channels. This causes optimum mixing of the air which leads to enhanced heat removal from the hot device. Due to the small size of the microchannel, a large number of such channels can be placed over a given heat generating surface in a single layer or multiple layers (the thickness of a layer is less than 1mm) to yield a very high heat removal rate within a very small size heat sink. The channels can also be integrated as separate layers in a 3-D electronic circuit architectures, located between layers of heat generating components to effectively remove heat and resolve hot-spot regions. Project ID : 9-2012-279
RAMOT at Tel Aviv University Ltd. posted this:autonomous pressure relieving aids for wheelchair patientsThe present invention provide a seat cushion for an individual suffering from loss of sensation in the buttocks but having sensation in higher regions of the trunk. The cushion may be used, for example, in individuals who have undergone spinal cord injury (SCI). The cushion of the invention provides tactile stimulation to regions of the surface of the individual’s body where the individual has retained tactile sensitivity (e.g. above the SCI level) to induce the individual to shift his sitting position. The cushion thus provides tactile sensory compensation, by transferring the sense of weight-bearing pressures from an insensitive body site which bears bodyweight loads (e.g. a body site affected by a neural injury) to a different, sensitive site which is not necessarily weight-bearing at the time. By repetitively shifting the location of the tactile stimulation, the cushion promotes frequent changes in posture, which tend to reduce the risk of pressure ulcers. Project ID : 8-2011-265