Large number and variety of variables are involved in measurement in practice. These variables may be constant with time or time varying. Measurement of the weight of an object is the example of time constant measurement. The measurement of pressure inside an I.C. engine is an example of time varying measurement. Output of a time
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Measurement is a comparison of a given unknown quantity with one of its predetermined standard values adopted as a unit. Metric system of measurement provides us with means of describing various phenomena in quantitative terms. It plays an important role in all branches of engineering and science. There are two important requirements of the measurement:
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The types of DC motors with field coils are classified as Series wound motor, Shunt wound motor, Compound motor, and Separately excited motor. Series wound motor The armature and field coils are in series. The motor exerts highest starting torque and has greatest no load speed. At light loads, the motor will run at high
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Temperature of the molten plastic is an important factor to be controlled in injection moulding. The design of cooling system operating temperature of the injection moulding is affected by the following factors. Type of polymer used. Length of flow within the impression. Wall section of moulding length of the feed system. Number of impressions in
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Extruder is one of the most common processes used to create plastic components for further processing. Extruder machine is also similar to that of injection moulding machine. The process consists of feeding the powdered plastic from the hopper into the heated chamber. A rotating screw carries the material forward and forces it out through the heated
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Blow moulds are relatively simple in design and construction when the predominant blow moulded products are bottle and container. The blow moulding process are made of aluminum or other lightweight metal. It can be either machined or cast. Requires a high degree of cooling throughout the mould. It requires several vents at parting line and
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A standard mould for injection moulding is divided in two sides: cavity side and core side. A cavity side consists of sprue and runner system through which the plastic melted from nozzle enters into the mould. A core side consists of core, de moulding system and ejection system. Since this type of mould have one
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Surveillance generally refers to monitoring or observing a person or a group of people from a certain distance, frequently, although not necessarily, comprising the use of electronic equipment and/or other technological devices. Wireless surveillance balloon equipment is typically used in warfare and/or in counter-insurgency operations to monitor the activities of an enemy from a distance,
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Engineering design is a complex process which involves interaction between many skills and discipline. In traditional design, the components are designed through mechanical, hydraulic or pneumatic components and principles. But in a mechatronics approach, mechanical, electronics, computer technology and control engineering principles are included to design a system. Figure shows the schematic of traditional and
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The mechatronics system design process consists of the following stages. Stage 1: Need for design The mechatronics system design process begins with a need. Needs are usually arise from dissatisfaction with an existing situation. Needs may come from inputs of operating or service personal or from a customer through sales or marketing representatives. They may
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