Research Development of Energy Efficient Water Hydraulics Manipulator for Underwater Application

The paper presents research development of water hydraulics manipulator test rig for underwater application at Center for Advance Energy Research, Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka. The test rig is designed in order to study the effectiveness of using water hydraulics system for underwater manipulation application. With objective to promote sustainability and energy saving, the manipulator system is targeted for usage in an underwater scenario, possibly on a small submarine or underwater remotely operated vehicle (ROV). Underwater vehicles normally utilize the use of oil hydraulics for propulsion, manipulation and instrument control. The research on underwater manipulator that uses the surrounding sea water itself as the power and energy carrier for control is now possible with the current development in water hydraulics technology

Slip Flow Coefficient Analysis in Water Hydraulics Gear Pump For Environmental Friendly Application

Water hydraulics is the sustainable option in developing fluid power systems with environmental friendly approach. Therefore, an investigation on water-based external gear pump application is being conducted, as a low cost solution in the shifting effort of using water, instead of traditional oil hydraulics in fluid power application. As the gear pump is affected by fluid viscosity, an evaluation has been conducted on the slip flow coefficient, in order to understand to what extend the spur gear pump can be used with water-based hydraulic fluid. In this paper, the results of a simulated study of variable-speed fixed displacement gear pump are presented. The slip flow coefficient varies from rotational speed of 250 RPM to 3500 RPM, and provides volumetric efficiency ranges from 9 % to 97% accordingly

Position Control Mathematical Modelling and Operational Evaluation of Tele-operated Electro-hydraulic Actuator (T-EHA)

Abstract. This study deals with a master-slave system for a tele-operated electro-hydraulic actuator (T-EHA) that focuses on a hydraulic system to remotely control a mini excavator. Tele-operation using such system is useful for tele-operation support of heavy construction and road restoration, typically in post-disaster areas. This paper presents the current development of position control electro-hydraulic actuator for such remote tele-operation application. A 2.4 GHz radio-controlled transmitter and receiver unit, which is also known as the master, has been utilized as the remote controller for an electro-hydraulic actuator. The electro-hydraulic actuator, which serves as the slave has been fabricated by using a tie-rod cylinder, and coupled with a 24 VDC electro-hydraulic valve. Position control mathematical modelling and operational evaluation have been studied with regard to the tele-operated electro-hydraulic actuator

Design and development of high performance hand dryer

In general, current hand dryers are lacking in term of performance because they are less effective or require longer time to dry. One alternative is to use tissue papers to dry hands but this option requires expensive running cost for toilet owners and they have a negative effect to the environment. There are effective hand dryers such Dyson Airblade or Mitsubishi Jet Towel but they are expensive. In this study a new concept of hand dryer technology has been developed. It is a new form factor design which contributes to less cost which improved efficiency. The development of the new hand dryer follows a structured product design and development phases which begins with the identification of customers’ needs and ends with a concept testing of a prototype. The new development hand dryer can function as specified with less components involved in the fabrication. This new hand dryer effectively dries both hands in less than 15 seconds and fulfils a part of National Sanitation Foundation (NSF) Protocol P335 criterion for effective hand dryer standard. It creates more value as having less carbon footprint and high energy efficiency due to no heating element being used and avoiding the use of tissue papers. The significant benefits are more on affordability and low operating cost

Development of infinite qualitative model framework for consumer product aesthetic design

Most engineering design processes today are more focused on functional aspects of product design and do not take aesthetic elements into account. Therefore, they are often difficult to use, unattractive, and/or do not solve the intended problems. As for the designers, they are not well-equipped to properly include aesthetic considerations during their design process, even though the advantages are widely acknowledged. This study proposes an Infinitive Qualitative Method (IQM) that effectively combines together theories from multiple disciplines such as social sciences, mechanical engineering design, industrial design and marketing management. The need for the new design framework is more pronounced for small manufacturing companies due to limited resources and also a lack of design skills among their small workforces. In fact, this research study is motivated by discussions and suggestions by the owners of two small companies producing consumer products within the local manufacturing industry in Malaysia. The IQM framework consists of two main components: product design and product development. The product design process includes an exploratory phase comprised of three stages: vision, ideation, and 3D conceptual. As for aesthetics, it is fully embedded within these stages by using established aesthetic design tools. Conversely, for the product development process, it explains the progress from multiple disciplines that have been adapted to ensure an efficient development process for the product. Ultimately, both of these components are interlinked with each other at a point in the framework where the product design component provides a theoretical design foundation for various stages of progress before engineering, manufacturing, and marketing teams take in-charge. The validation of the IQM design framework is achieved through triangulation analysis of results from a conducted survey, controlled experiment, and full-scale case study. IQM design framework adapts the best combination of design tools and methods with a novel approach that can potentially lead to a much better-quality product design. The study's significant finding is that this design method will provide a simple, easy, yet comprehensive way for design engineers to create well-designed products. IQM addresses the lack of proper aesthetic considerations in current product design methods

Direct Modelling CAD Technology Comparative Review In Efficiency And Productivity For Product Development Process

Direct modelling is a new CAD technology that enables model geometry construction by pushing, pulling or twisting which emphasis to solve the constraint issues made by the current technology. Ideally it is more efficient and productive in accomplishing a part of product development process. Parametric modelling is set as the benchmark. This study is about comparing productivity and efficiency of both modelling by mean of counting mouse button clicks as representing speed for accomplishing the task. The review also taking into account several qualitative aspects during the process. Consequently, direct modelling is proven better from the parametric modelling for this scenario

Position Control Mathematical Modelling and Operational Evaluation of Tele-operated Electro-hydraulic Actuator (T-EHA)

Abstract. This study deals with a master-slave system for a tele-operated electro-hydraulic actuator (T-EHA) that focuses on a hydraulic system to remotely control a mini excavator. Tele-operation using such system is useful for tele-operation support of heavy construction and road restoration, typically in post-disaster areas. This paper presents the current development of position control electro-hydraulic actuator for such remote tele-operation application. A 2.4 GHz radio-controlled transmitter and receiver unit, which is also known as the master, has been utilized as the remote controller for an electro-hydraulic actuator. The electro-hydraulic actuator, which serves as the slave has been fabricated by using a tie-rod cylinder, and coupled with a 24 VDC electro-hydraulic valve. Position control mathematical modelling and operational evaluation have been studied with regard to the tele-operated electro-hydraulic actuator

Simulation And Experimentation Of Water Hydraulics Technology For Automatic Traditional Cookies Production

This study proposes a low-cost water hydraulics food processor for a traditional cookies production. The objective of this project is to introduce the design and the working principle of the water hydraulics-driven food processor, and to simulate production process performances and capabilities. The basic design is similar to that of a traditional food processor. It consists of an electrical motor, an inverter, a triplex pump, two directional control valves and cylinders. Simulation software is used to design and simulate the movement of the machine. Electro-mechanical relays and timers are used in the machine development, to balance the requirement for a low cost and modern machine automation. PLC is used in the testing of the machine. Water is used as the pressure medium for the system. Cartesian robotics movement is applied for the system, with one cylinder controlling the batches of the cookies, and the other handling the cookies extrusion system. The system is simulated with respective flow and pressure