Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 33 | MEMS-based Feedback Controller |
Jianbo Xu Peiheng Yao Zhiyuan Xie |
Xuyang Bai | design_document2.pdf final_paper1.pdf proposal1.pdf |
Binbin Li |
| **TEAM MEMBERS: ** Jianbo Xu[jianbox2] Peiheng Yao[peiheng5] Zhiyuan Xie[zx30] **TITLE OF THE PROJECT: ** MEMS-based Feedback Controller **PROBLEM: ** Seismic activity can cause significant damage to buildings and infrastructure. Vibrations caused by seismic activity can result in a range of problems, such as structural damage, equipment failure, and even collapse, which can lead to serious safety risks and financial losses. A feedback controller can help to mitigate these risks by providing a mechanism for actively controlling the vibrations of the building model. The controller receives feedback from sensors that measure the vibration of the building model and uses this information to adjust the input to the shake table. This allows the controller to actively suppress the vibrations of the building model, reducing the risk of damage or failure. **SOLUTION OVERVIEW: ** We are aiming to develop a feedback controller for this purpose involves designing a control algorithm that can accurately and efficiently control the vibration of the building model. The model response is measured by a MEMS-based accelerometer, which is a type of accelerometer that uses micro-electromechanical systems (MEMS) technology to measure acceleration. **SOLUTION COMPONENTS: ** Reading circuit: we need to design the reading circuit that can completely know how the capacitor of MEMS accelerometer changed. We can use some RC circuit like the RC latch to save the signal and then transmit it to another place. What we need to do is to lower the delay of this process. Wireless system: It can connect the circuit with our computer. This system allows us to import the data into computer, where the further data processing occurs. There’re two solutions in this wireless system, one is using the Bluetooth wireless system to transmit the data, the advantage is that it’s convenient and we’re familiar with the use of Bluetooth. We can use the Arduino module like HC-05 or HC-42 to make it possible. The mechanical part: To imitate the image from the description, we need to place four rods on the system and place the MEMS accelerometer on the surface. And keep it stable to avoid the intrinsic vibration, which will cause the error in our system. Data processing program: To simulate the vibration of the building or other vibrations, we need to precisely capture and analyze data collected. It can be built using Simulink, MATLAB. After our computer got the data, like signals. We need to process it by filtering some signal of different type of wavelength and fetch what we need to create the feedback controller system. **CRITERIA FOR SUCCESS: ** Reliability: Feedback controller can detect seismic excitation correctly, and overall weight is no more than 10% of the floor mass Accuracy：It can make reaction to a slight vibration. Selectivity: Maximum acceleration of floor response is no more than 0.01 g under various seismic excitations. |
|||||