This paper presents the design fabrication and characterization of a piezoresistive 6 degree of freedom force and torque sensor to be used in micro manipulation. The mechanical structure of the device consists of seven suspended beams and a calibration structure, which can be replaced by micro manipulation tools such as micro grippers or probes. The geometry of the beam and the location of the piezoresistors in the structure are optimized to reduce crosstalk and improve the sensitivity. A linear regression model is fitted to the calibration data to extract the force and torque from the resistance variations detected in the piezoresistors. The device has been fabricated with an IC compatible process and successfully characterized. Aspects of control implementation concerning a joint torque sensor are discussed and a technique to its correction and calibration is presented. 6level control scheme is used for the intrinsic to the 6 time scale dynamics of the system. For the first part of the system dynamics joint model is presented. Based on this model, two variants of torque control loop are developed and their terms of application are outlined.

There are many different spark plug designs available in the market now a day. Understanding the differences between them is beneficial in helping the engine to run properly and efficiently. Spark plug and mode failure is a systematic tool for identifying the effects or consequences of a potential product or process failure and to eliminate or reduce the change of failure occurring, Detection rating and risk priority number (RPN) are some parameters, which are to be determine. These are the steps taken during design phase of equipment to ensure that the reliability requirements have been properly allocated and that a process for continuous improvement exists. Here the spark plug and mode failure (SPMF) technique is applied on the spark plug operation and defects are found. This work serves as a failure prevention guide and also would improve the reliability of spark plug operation and thus ensuring the effective vehicle performance.

A wet clutch, which is an oil-lubricated friction type device, a torque transmission or torque holding device. It is commonly employed in a planetary gear-based automatic transmission system. Wet clutch is also found as a vehicle launch device. Although the wet clutch technology has been around years. In this paper an automobile clutch plate system is designed and analysis requirement of clutch high torque and high control accuracy and batter design. The paper deal with design friction clutch and analysis. The measurement result show that the torque efficiency and accuracy improve and system is working credibly and stable to improve the engagement quality of clutch plate. The purpose of a clutch is to initiate motion or increase the velocity of body generally by transferring kinetic energy from another motion body. The mass being accelerated is generally a rotating inertial body’

This paper describes review on performance study and characteristic of two spark plugs. Two spark ignition engine two stroke spark ignition engines have high exhaust emissions and low brake thermal efficiency due to the short circuiting losses and incomplete combustion, which occur during idling and at part load operating condition fuelled by gasoline and natural gas.