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Utveckling av ett två-axligt bildsensorstabiliseringssystem

Lindell, Nicklas LU and Knutsson, Albert (2020) In CODEN:LUTEDX/TEIE EIEM01 20201
Industrial Electrical Engineering and Automation
Abstract (Swedish)
Even the simplest cameras today house a plethora of impressive mechatronic systems. One of the key systems that determines the camera performance is the image stabilization, as involuntary hand movements during exposure can produce unsharp images. One way to compensate is by an internal image sensor stabilization system.

This thesis describes the design and implementation of a 2 degrees of freedom balanced stabilizing system for a camera image sensor using small linear dc actuators. The purpose is to develop a new system that fits into a new camera model. Empty space is hard to find in modern cameras, and the size of the available space affects the system design greatly. Thus both the design of the mechanical system and the design of... (More)
Even the simplest cameras today house a plethora of impressive mechatronic systems. One of the key systems that determines the camera performance is the image stabilization, as involuntary hand movements during exposure can produce unsharp images. One way to compensate is by an internal image sensor stabilization system.

This thesis describes the design and implementation of a 2 degrees of freedom balanced stabilizing system for a camera image sensor using small linear dc actuators. The purpose is to develop a new system that fits into a new camera model. Empty space is hard to find in modern cameras, and the size of the available space affects the system design greatly. Thus both the design of the mechanical system and the design of the actuators go hand in hand.

The simulation tools Comsol and FEMM are used to evaluate actuators with regards to size, material, force production, force linearity, power consumption and hall effect sensor compatibility.
Position sensing of the system is implemented using a differential hall effect sensor setup to minimize temperature impact on measurements. By placing hall sensors in pairs and modifying the results using simple arithmetics, the linear sensing range can be increased and the temperature dependence greatly decreased.

The results are a CAD model for a mechanical system that fits within the given design space, two optimized actuator concepts, and a 3D printed experimental set up for evaluating force production and position sensing.

Actuators are built and tested in experimental assemblies. A scale of 1:1 mechanical assembly was built which can be further developed to make a fully working prototype. (Less)
Please use this url to cite or link to this publication:
author
Lindell, Nicklas LU and Knutsson, Albert
supervisor
organization
alternative title
Development of a two axes image sensor stabilizing system
course
EIEM01 20201
year
type
H3 - Professional qualifications (4 Years - )
subject
publication/series
CODEN:LUTEDX/TEIE
report number
5438
language
Swedish
id
9024542
date added to LUP
2021-04-26 13:11:46
date last changed
2021-04-26 13:11:46
@misc{9024542,
  abstract     = {{Even the simplest cameras today house a plethora of impressive mechatronic systems. One of the key systems that determines the camera performance is the image stabilization, as involuntary hand movements during exposure can produce unsharp images. One way to compensate is by an internal image sensor stabilization system.

This thesis describes the design and implementation of a 2 degrees of freedom balanced stabilizing system for a camera image sensor using small linear dc actuators. The purpose is to develop a new system that fits into a new camera model. Empty space is hard to find in modern cameras, and the size of the available space affects the system design greatly. Thus both the design of the mechanical system and the design of the actuators go hand in hand.

The simulation tools Comsol and FEMM are used to evaluate actuators with regards to size, material, force production, force linearity, power consumption and hall effect sensor compatibility. 
Position sensing of the system is implemented using a differential hall effect sensor setup to minimize temperature impact on measurements. By placing hall sensors in pairs and modifying the results using simple arithmetics, the linear sensing range can be increased and the temperature dependence greatly decreased.

The results are a CAD model for a mechanical system that fits within the given design space, two optimized actuator concepts, and a 3D printed experimental set up for evaluating force production and position sensing. 

Actuators are built and tested in experimental assemblies. A scale of 1:1 mechanical assembly was built which can be further developed to make a fully working prototype.}},
  author       = {{Lindell, Nicklas and Knutsson, Albert}},
  language     = {{swe}},
  note         = {{Student Paper}},
  series       = {{CODEN:LUTEDX/TEIE}},
  title        = {{Utveckling av ett två-axligt bildsensorstabiliseringssystem}},
  year         = {{2020}},
}