Space Robotics

                          Robot is a system with a mechanical body, using computer as its brain. Integrating the sensors and actuators built into the mechanical body, the motions are realised with the computer software to execute the desired task. Robots are more flexible in terms of ability to perform new tasks or to carry out complex sequence of motion than other categories of automated manufacturing equipment. Today there is lot of interest in this field and a separate branch of technology ‘robotics’ has emerged. It is concerned with all problems of robot design, development and applications. The technology to substitute or subsidise the manned activities in space is called space robotics. Various applications of space robots are the inspection of a defective satellite, its repair, or the construction of a space station and supply goods to this station and its retrieval etc. With the over lap of knowledge of kinematics, dynamics and control and progress in fundamental technologies it is about to become possible to design and develop the advanced robotics systems. And this will throw open the doors to explore and experience the universe and bring countless changes for the better in the ways we live.

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Speech Recognition

                          Language is man's most important means of communication and speech its primary medium. Speech provides an international forum for communication among researchers in the disciplines that contribute to our understanding of the production, perception, processing, learning and use. Spoken interaction both between human interlocutors and between humans and machines is inescapably embedded in the laws and conditions of Communication, which comprise the encoding and decoding of meaning as well as the mere transmission of messages over an acoustical channel. Here we deal with this interaction between the man and machine through synthesis and recognition applications.
The paper dwells on the speech technology and conversion of speech into analog and digital waveforms which is understood by the machines
Speech recognition, or speech-to-text, involves capturing and digitizing the sound waves, converting them to basic language units or phonemes, constructing words from phonemes, and contextually analyzing the words to ensure correct spelling for words that sound alike. Speech Recognition is the ability of a computer to recognize general, naturally flowing utterances from a wide variety of users. It recognizes the caller's answers to move along the flow of the call.
We have emphasized on the modeling of speech units and grammar on the basis of Hidden Markov Model. Speech Recognition allows you to provide input to an application with your voice. The applications and limitations on this subject has enlightened us upon the impact of speech processing in our modern technical field.

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Contactless Energy Transfer to a Moving Actuator

                          Most high-precision machines are positioning stages with multiple degrees of freedom (DOF), which often consist of cascaded long- and short-stroke linear actuators that
are supported by mechanical or air bearings. Usually, the long stroke actuator has a micrometer accuracy, while the submicron accuracy is achieved by the short-stroke actuator. To build a high-precision machine, as much disturbances as possible should be eliminated. Common sources of disturbances are vibrations, Coulomb and viscous friction in bearings, crosstalk of multiple cascaded actuators and cable slabs.A possibility to increase throughput, while maintaining accuracy is to use parallel processing, i.e. movement and positioning in parallel with inspection, calibration, assembling, scanning, etc. To meet the design requirements of high accuracy while improving performance, a new design approach is necessary, especially if vacuum operation is considered, which will be required for the next generation of lithography
machines. A lot of disturbance sources can be eliminated by integrating the cascaded long- and short-stroke actuator into one actuator system.

Since most long-stroke movements are in a plane, this can be done by a contactless planar actuator. A contactless planar actuator or planar motor is supported by magnetic bearings that levitate the actuator platform, while controlling all six DOF of the platform. Long-stroke linear
movement in 2D is also provided by the magnetic bearing while small translations in height and small rotations remain possible. Magnetic bearings can also operate in vacuum. Parallel processing requires power on the platform to drive the actuators on the platform. In order to remove as much disturbances as possible, the power transfer needs to be contactless, i.e. without wires from the ground to the platform. A coil topology and geometry for a contactless
energy transfer system is proposed for energy transfer to a planar moving platform. The platform is equipped with permanent magnets and is levitated and propelled by a matrix of coils, which are fixed to the ground. Such a planar actuator is currently under investigation at Eindhoven University of Technology. The aim of this research project is to transfer energy to the moving platform continuously and at every position in order to enhance the functionality of the platform, while maintaining the advantages of operating without contact and cables slabs.

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P-ISM (Pen-style Personal Networking Gadget Package)

                          P-ISM (“Pen-style Personal Networking Gadget Package”), which is nothing but the new discovery, which is under developing, stage by NEC Corporation. P-ISM is a gadget package including five functions: a pen-style cellular phone with a handwriting data input function, virtual keyboard, a very small projector, camera scanner, and personal ID key with cashless pass function. P-ISMs are connected with one another through short-range wireless technology. The whole set is also connected to the Internet through the cellular phone function. This personal gadget in a minimalist pen.

P-ISMs are connected with one another through short-range wireless technology. The whole set is also connected to the Internet through the cellular phone function. They are connected through Tri-wireless modes (Blue tooth, 802.11B/G, and Cellular) which are made small and kept in a small pen like device.

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