U3 Robotics and VR

Question 1

o Virtual Reality (VR)

Answer 1

Virtual reality is the product of attempts by computer designers to use the computer to mimic waking reality. One might think of it as a technologically mediated reality.

Question 2

o window VR systems

Answer 2

A computer screen provides a portal onto an interactive, 3-D world. Desktop computers are often used and users sometimes wear 3-D glasses for stereoscopic effects.

Question 3

o mirror VR systems

Answer 3

The users look at a projection screen and see an image of themselves moving in a virtual world. Video equipment is used to record the user’s body. A computer superimposes a cut-out image on a computer graphic background.

Question 4

o robot characteristics

Answer 4

1. Programmable A robot should be able to store and execute programs, paths whether the program be on tape, floppy disk, or a computer chip.
2. Multi-functional A robot should be able to perform more than one type of task by executing different programs.
3. Transport A robot should be able to move itself or other objects tasks from place to place.
4. Tools A robot should include tools for carrying out the operations it is programmed to perform.
5. Variable programmed A robot should be able to store and follow the sequential movements needed to complete its task.
6. Specific manufacturing A robot should be able to complete its tasks without relying on human intervention and repeat the tasks exactly as required as often as necessary.
7. Manipulate A robot should be able to handle and manipulate objects in various ways, including gripping and rotating the objects with which it must work.

Question 5

o kinaesthetic sense

Answer 5

the senses of position and movement of the body, senses we are aware of only on introspection

Question 6

o perceptual illusions

Answer 6

consistent and persistent discrepancies between a physial state of affairs and its representation in consciousness. It is argued that for the most part these discrepancies occur mainly as a consequence of the activation of perceptual processes by contrived, artificial stimuli

Question 7

o perceptual constancy

Answer 7

the tendency of animals and humans to see familiar objects as having standard shape, size, colour, or location regardless of changes in the angle of perspective, distance, or lighting.

Question 8

o LERT Classification System

Answer 8

The LERT classification system uses the type of motion produced by each robot axis as a basis for classifying the robot.The four basic motions are linear, extensional, rotational, and twisting (LERT).

Question 9

o robotic effectors

Answer 9

Effector is another name for actuator.

What is an end effector?
End effectors are devices attached to the working end of a robotic arm or device. They include grippers, tools and switches.

Question 10

o robotic actuators

Answer 10

Actuators are devices that carry out a mechanical action of the robot under the control of a signal. They perform the actual work of the system, such as a pump stopping, a switch being moved or a light beam being turned on. Some common actuators are electric motors, solenoids and stepping motors.

Actuators allow movement such as an arm or a leg type of motion. Actuators can also be used to help hold items.