Remote Control cars

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B-Tech Project Patent
Department of Mechanical Engineering
Suman Chandrawat 2001498 Group 03
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B-Tech ProjectStudy of Performance Related
Measures in Automotive Assembly Lines
ByBiswas Shivdsasani (2002)
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• Introduction
• Framework developed using Technique for Order
  
• Performance by Similarity to the Ideal
  Solution
• (TOPSIS)
• Measures the performance on the basis of sixteen
  
• different attributes and ranks the
  alternatives
• Framework has been supported by two
  questionnaires
• designed to obtain information for priorities
  of
• different attributes, factors and sub factors

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• The Performance Evaluation System
• Listing the Attributes
• Understanding the Attributes
• Functional evaluation of Attributes
• Human Factors

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Listing the Attributes

• Process Design
• Line balance
• Test strategies
• Productivity
• Material Handling
• Maintenance policy
• Work in process management
• Parts procurement

• Parts feeding
• Human factors
• Line size
• Line layout
• Information system
• Competitive advantage
• Safety
• Environmentability

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Understanding the Attributes

• Attributes must be consistent with the
• strategic goals of the companys business
• plan.

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Functional evaluation of Attributes

• Line Flow and Configuration
• Line Operation
• Material logistics
• Productivity and quality
• Information management

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Human Factors

• Various factors and sub factors help in
• understanding
• human behavior, abilities, limitations etc.
• other characteristics to design of tools,
  machines, systems, tasks, jobs
• To design environment for more productive, safe,
  comfortable and effective use of the human
  resources on assembly lines
• These factors and sub factors have been evaluated
  using AHP.

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• Weighted evaluation for human characteristics
• Psychological aspects
• Physiological and anatomical Aspects
• Group factors
• Individual differences
• Psycho Physiological state variables
• Task related factors

• Weighted evaluation for display and control
  design
• Input devices
• Visual Displays
• Auditory displays
• Other modality display
• Display and control characteristics

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Weighted evaluation for information,
Presentation, and communication

• Error prevention recovery
• Design of documents and procedure
• User system features
• Language design
• Database organization and data retrieval

• Visual Communication
• Auditory and other communication modalities
• Choice of communication media
• Person-machine dialogue mode
• System feedback

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Weighted evaluation for Workplace and Equipment
design

• General workplace design and building
• Workstation design
• Equipment design
• Work environment
• Illumination

• Noise
• Vibration
• Whole body movement
• Climate
• Atmosphere
• Other environmental issues

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TOPSIS analysis
A Process Design B Line balance C Test
strategies D Productivity E Material
Handling F Maintenance policy
G Work in process management H Parts
procurement I Parts feeding J Human factors K
Line size
L Line layout M Information system N
Competitive advantage O Safety P
Environmentability
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• Limitations
• It is not suitable for measuring the impact of
  product
• variety on the performance of the assembly
  line.
• It does not include the competitors perspective,
  the
• effects of market condition or the operational
  
• conditions of the assembly line.
• Although the results obtained are relevant for
  assembly
• lines across the spectrum of automobile
  manufacturing
• companies, some amount of subjectivity might
  have
• crept into the results inadvertently.

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Remote Control cars
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Introduction

• Remote control- controlling a machine, or some
  function of a machine at a distance, either wired
  or wireless
• Communication to their respective devices via
  infrared signals and a few via radio signals.

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Remote Control Technology

• Military purposes
• Zenith Space Command- the first modern wireless
  remote
• Transistor - made possible cheaper electronic
  remotes
• Semiconductors -using radio technologies

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Mechanism

• Use of radio signals to remotely control model
  car
• Pulse Width Modulation (PWM) or Pulse Position
  Modulation (PPM)
• Actuate the various control surfaces using
  servomechanisms.
• R/C systems - Proportional control

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New Techniques

• "Digital Proportional" computerized digital
  bit-stream signal to the receiving device
• Bit error checking capabilities of the data
  stream

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Remote Control Cars

• A radio controlled car is a powered model car
  driven from a distance by a hand-held radio
  transmitter which sends its control information
  to the car's onboard radio reciever
• Model Car
• Radio Transmitter
• Radio receiver

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Transmitter

• Propagates an electromagnetic signal such as
  radio.
• Components
• Power supply
• An oscillator
• Amplifier for audio(AF), intermediate frequency
  (IF) and radio frequency (RF)
• Sends information to an observer (reciever)

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Receiver

• An electronic device that receives a radio signal
  from an antenna.
• Decodes the signal for use.

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Model Car
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Model Car

• Scale miniatures of real production vehicles
• In plastic, die-cast metal, resin, even wood
• Modeled by electric engine or gas powered systems
  

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Electric motor

• Electrical energy into mechanical motion
• Motors based on other
• Motor contains electromagnets that are wound on a
  frame
• Electromechanical phenomena, such as
  electrostatic forces and the piezoelectric
  effect, also exist
• The force is described by the Lorentz Force Law.

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Drawbacks of Electric cars

• Need to perform extra maintainence to keep the
  performance level up
• Allowed to cool down between runs to avoid
  demagnetizing the permanent magnets

On road electric with body removed
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Internal combustion engine

• Powered by the expansion of hot combustion
  products of fuel.
• A piston internal combustion engine
• Rotary combustion engine

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Applications of Remote control cars in Navigation
and Remote Tracking

• Autonomous Underwater Vehicles (AUV)
• Isurus a REMUS (Remote Environment Measuring
  UnitS) class AUV.
• Coastal waters monitoring
• Can accommodate a wide range of oceanographic
  sensors.

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Thank you !