10. High Efficiency
Fast Response
easily maintainable
Durable
Cost efficient
EEE 1317
11. Heating effect in LDR
Lasting
Notification for any types of object
EEE 1317
12. This Laser Security System is very useful in high command security place
Hostel
Hospitals
Institutions
Buildings
a
13. IEEE spectrum ( May 2009), the 555 was
selected as one of the” 25 Microchips that
shook the world”.
Adel S. Sedra & Kenneth C.
Smith.,”Microelectronics Circuit 6th edition”
D. patranabis,” Sensors and Transducers”
2nd edition.
Kogelnik, H., and Li, T., "Laser beams and
resonators," Appl. Opt., vol. 5, Oct. 1966.
Diffenderfes, Robert (2005). Electronic
Devices: System and Applications. New
Delhi: Delimar. p. 480. ISBN 978-
1401835149
EEE 1317
Typical max speeds: 3-5 m/s with 1 micron resolution, 5+ m/s (>200 ips) with less resolution
Budget is main restraint on controller bandwidth
Higher stiffness (spring rate), though limited by motor peak force, available current, and feedbakc resolution
Linear encoders are usually around $500 for 100 mm travel encoder, cost increases with length. Rotary encoders are relatively inexpensive – tend to be under 100 dollars
No mechanical reduction between motor and load, thus servo response (bandwidth) must be faster. Includes higher encoder bandwidth and servo update rates
Linear motors are not compact force generators when compared to rotary motor with transmission offering mechanical advantage. Example 3/8” diam. Ball screw produces 100 lb of thrust, while 15 lb of linear thrust typically requires 2” x 1.5” cross section.
Heat management techniques such as air and water cooling options (both common, popular) have to be applied
Suppose it’s traveling at 3 m/s and loses power. Without resistance, it will quickly reach end of end of system, mechanical stops.
Linear encoders are usually around $500 for 100 mm travel encoder, cost increases with length. Rotary encoders are relatively inexpensive – tend to be under 100 dollars
No mechanical reduction between motor and load, thus servo response (bandwidth) must be faster. Includes higher encoder bandwidth and servo update rates
Linear motors are not compact force generators when compared to rotary motor with transmission offering mechanical advantage. Example 3/8” diam. Ball screw produces 100 lb of thrust, while 15 lb of linear thrust typically requires 2” x 1.5” cross section.
Heat management techniques such as air and water cooling options (both common, popular) have to be applied
Suppose it’s traveling at 3 m/s and loses power. Without resistance, it will quickly reach end of end of system, mechanical stops.
