Auto Gear Teeth Burnishing Machine Using Servo Control

A typical vehicle transmission is comprised of between five and six gear sets and a series of gear trains that allows a driver to control how much power is delivered to the vehicle without changing how fast the engine runs. This transmission makes noise such as burrs, nicks, high points and heat treat scales are the leading causes of noise in power transmission. There are many different causes of gear noise, all of them theoretically preventable. Unfortunately, the prevention methods can be costly, both in equipment and manpower. If the design of the gear and its application are appropriate, in theory all that is necessary is to have a tight control on the process of producing the finished gear. In reality, there are many variables that can cause a process, no matter how well-controlled, to deteriorate, and thus cause errors, some of which will cause a gear to produce unwanted noise when put to use. The effective way to eliminate this noise the process known as "Gear Burnishing". The proposed system uses gear shaving cutter as a master for burnishing or deburring operation of gear teeth with servo mechanism (includes servo motor and servo drivers), Programmable logic controller (PLC), Human machine interface (HMI) to remove gear inaccuracies and so as to reduce or eliminate transmission noise and provide more life and reliability to transmissions in vehicles resulted into noise free vehicles.

Feasibility Analysis of Novel Maglev EDM by Comparing with Conventional Micro EDM

The Micro EDM is the most suitable machining process in the miniaturization of products at present era. The attainment of close precision is the primary obligation in miniaturization or micromachining. Especially in machining of hard-to-cut materials like titanium alloy. Such alloys are applied in several cutting-edge high-quit applications due to extraordinary properties. Current work presents an exploratory analysis of novel Maglev EDM while machining of commercially used pure titanium alloy (CP-TI). The work outlook is to establish the viability of novel Maglev EDM by comparing the with similar range of micro EDM. The pure DC power is employed with the conjunction of Maglev lucidity to refine the shortcomings of the conventional micro EDM. The novel technology deals with prime concerns of conventional micro EDM and cracked deficiencies like delay response of mechanical actuator and a servo mechanism. The Novel technology uses the logical arrangement of permanent and electromagnet to dealt with inadequacies like short-circuiting and arcing. The results of state of art novel technology proclaimed the improved Material removal rate (MRR), which are lying in the average range of 76.6 µgm/min, whereas the specific energy and surface roughness are observed 33.4 Joule/ microgram and 4.3 µm respectively.

Simulacija i odstranjivanje stick-slip efekta servosistema sprovodnog aparata hidraulične turbine

Friction is a repeatable and undesirable problem in hydraulic systems where always has to be a tendency for its removal. In this paper, the friction model is presented through which the most accurate results are achieved and the way of friction compensation, approached trough technique presented with the mathematical model of a hydraulic cylinder of a hydro turbine wicket gate controlled by a servomechanism. Mathematical modelling of a servo mechanism and hydraulic actuator, and also the simulation of hydraulic cylinder as a part of a hydro turbine wicket gate hydraulic system where the stick-slip phenomenon is present between the system components that are in contact is presented. Applied results in this paper and the theory behind them precisely demonstrate under what circumstances the stick-slip phenomenon appears in such a system. The stick-slip effect is simulated using Simulink and Hopsan software and the analysis of the results are given in this paper. Removal of the stick-slip effect is presented with the design of a cascade control implemented to control the behaviour of the system and remove the appearance of a jerking motion.

Performance Improvement of a Conventional Hydraulic Elevator by Using Electro-Hydraulic Servo Mechanism

An electro-hydraulic elevator is a new type of enhanced elevators that are used in low-rise buildings that do not exceed more than three floors. In this paper, an electro-hydraulic servo system for controlling the speed of a hydraulic elevator prototype by using a proportional valve and PID controller was investigated theoretically and experimentally. A three floors elevator prototype model with 76cm height was built including hydraulics components and electrical components. The elevator system is fully automated using the Arduino UNO board based Data Acquisition (DAQ) system. LabVIEW software is used to control the hydraulic elevator system through L298 DC drive via the DAQ board. The best PID gains was obtained experimentally. The elevator system prototype could be emplimented for educational purposes; such as learning the undergraduate students in the Electromechanical Engineering Department in the University of Technology how to structuring the electro-hydraulic elevator as well as the appropriate control strategy.

Analysis and Verification of Finite Time Servo System Control with PSO Identification for Electric Servo System

Electric servo system (ESS) is a servo mechanism in a control system of an aircraft, a ship, etc., which controls efficiency and directly affects the energy consumption and the dynamic characteristics of the system. However, the control performance of the ESS is affected by uncertainties such as friction, clearance, and component aging. In order to improve the control performance of the ESS, a control technology combining particle swarm optimization (PSO) and finite time servo system control (FTSSC) was introduced into ESS. In fact, it is difficult to know the uncertain physical parameters of the real ESS. In this paper, the genetic algorithm (GA) was introduced into PSO and the inertia weight was improved, which increased the parameter optimization precision and convergence speed. A new feedback controller is proposed to improve response speed and reduce errors by using FTSSC theory. The performance of the controller based on PSO identification algorithm was verified by co-simulation experiments based on Automatic Dynamic Analysis of Mechanical Systems (ADAMS) (MSC software, Los Angeles, CA, USA) and matrix laboratory (MATLAB)/Simulink (MathWorks, Natick, MA, USA). Meanwhile, the proposed strategy was validated on the servo test platform in the laboratory. Compared with the existing control strategy, the control error was reduced by 75% and the steady-state accuracy was increased by at least 50%.

Study on Cruise Control System for Two Wheelers using Pawl and Ratchet Mechanism

Cruise control is a system to control the speed of motor vehicle automatically at certain speed. This is a servo mechanism that takes over the throttle of the vehicle to maintain a steady speed set by the driver, as it is an optional feature for high end variant cars. In this project we are going to implement cruise control concept for two wheelers, In order to avoid continuous acceleration for very long time when we are for long distance rides. We have planned to invoke this concept using electro-mechanical components like IR sensors, Driving mechanism (motor linkages) and pawl ratchet.