Optimal Active Control of Structures Using a Screw Jack Device and Open-Loop Linear Quadratic Gaussian Controller
A screw jack is a device which converts input torque into amplified axial force, capitalizing on the device's gearbox mechanism. Traditionally used in auto repair shops, the screw jack has been studied for the first time for active structural control. The dynamic properties of the device were i...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2019-04-01
|
| Series: | Frontiers in Built Environment |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/article/10.3389/fbuil.2019.00043/full |
| _version_ | 1818285658057211904 |
|---|---|
| author | Ali Noormohamed Oya Mercan Ali Ashasi-Sorkhabi |
| author_facet | Ali Noormohamed Oya Mercan Ali Ashasi-Sorkhabi |
| author_sort | Ali Noormohamed |
| collection | DOAJ |
| description | A screw jack is a device which converts input torque into amplified axial force, capitalizing on the device's gearbox mechanism. Traditionally used in auto repair shops, the screw jack has been studied for the first time for active structural control. The dynamic properties of the device were investigated using open loop control, and the screw jack was found to have a high delay between command and measured force. Numerical simulations and parametric studies of SDOF systems with an LQG-controlled screw jack showed improvements to structural performance at four different levels of control effort. Loop simulation method experiments were conducted under seven ground motion records—benefits to structural response were dependent on the type of earthquake, with greater benefits observed for records with greater low-frequency content. Future work should investigate the types of structures and earthquakes for which the screw jack is most impactful using real-time hybrid simulation. |
| first_indexed | 2024-12-13T01:12:11Z |
| format | Article |
| id | doaj.art-02db5e0f83a443f6af72332c82773e31 |
| institution | Directory Open Access Journal |
| issn | 2297-3362 |
| language | English |
| last_indexed | 2024-12-13T01:12:11Z |
| publishDate | 2019-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Built Environment |
| spelling | doaj.art-02db5e0f83a443f6af72332c82773e312022-12-22T00:04:25ZengFrontiers Media S.A.Frontiers in Built Environment2297-33622019-04-01510.3389/fbuil.2019.00043442427Optimal Active Control of Structures Using a Screw Jack Device and Open-Loop Linear Quadratic Gaussian ControllerAli NoormohamedOya MercanAli Ashasi-SorkhabiA screw jack is a device which converts input torque into amplified axial force, capitalizing on the device's gearbox mechanism. Traditionally used in auto repair shops, the screw jack has been studied for the first time for active structural control. The dynamic properties of the device were investigated using open loop control, and the screw jack was found to have a high delay between command and measured force. Numerical simulations and parametric studies of SDOF systems with an LQG-controlled screw jack showed improvements to structural performance at four different levels of control effort. Loop simulation method experiments were conducted under seven ground motion records—benefits to structural response were dependent on the type of earthquake, with greater benefits observed for records with greater low-frequency content. Future work should investigate the types of structures and earthquakes for which the screw jack is most impactful using real-time hybrid simulation.https://www.frontiersin.org/article/10.3389/fbuil.2019.00043/fullactive controllinear quadratic gaussianscrew jackstructural controlearthquake engineeringvibration control |
| spellingShingle | Ali Noormohamed Oya Mercan Ali Ashasi-Sorkhabi Optimal Active Control of Structures Using a Screw Jack Device and Open-Loop Linear Quadratic Gaussian Controller Frontiers in Built Environment active control linear quadratic gaussian screw jack structural control earthquake engineering vibration control |
| title | Optimal Active Control of Structures Using a Screw Jack Device and Open-Loop Linear Quadratic Gaussian Controller |
| title_full | Optimal Active Control of Structures Using a Screw Jack Device and Open-Loop Linear Quadratic Gaussian Controller |
| title_fullStr | Optimal Active Control of Structures Using a Screw Jack Device and Open-Loop Linear Quadratic Gaussian Controller |
| title_full_unstemmed | Optimal Active Control of Structures Using a Screw Jack Device and Open-Loop Linear Quadratic Gaussian Controller |
| title_short | Optimal Active Control of Structures Using a Screw Jack Device and Open-Loop Linear Quadratic Gaussian Controller |
| title_sort | optimal active control of structures using a screw jack device and open loop linear quadratic gaussian controller |
| topic | active control linear quadratic gaussian screw jack structural control earthquake engineering vibration control |
| url | https://www.frontiersin.org/article/10.3389/fbuil.2019.00043/full |
| work_keys_str_mv | AT alinoormohamed optimalactivecontrolofstructuresusingascrewjackdeviceandopenlooplinearquadraticgaussiancontroller AT oyamercan optimalactivecontrolofstructuresusingascrewjackdeviceandopenlooplinearquadraticgaussiancontroller AT aliashasisorkhabi optimalactivecontrolofstructuresusingascrewjackdeviceandopenlooplinearquadraticgaussiancontroller |