Product name
AMD for horizontal vibration
model number
AMDV-50sl (Vibration mass 50 kg type)
This device is used to reduce horizontal (uniaxial) environmental vibration, such as wind vibration, in buildings. The attached acceleration sensor detects the horizontal vibration of the object, and by tuning the vibration mass to the vibration, the system absorbs and suppresses the horizontal vibration of the object. AMD for vertical vibration isthis way (direction close to the speaker or towards the speaker)
Product Overview
forte
- Compared to TMD (tuned mass damper), a large effect can be obtained with a small vibration mass.
- It is more compact (smaller in flat area) than TMD, allowing for greater flexibility in installation space.
- Because of active control, it is also possible to control for vibration with multiple peak frequencies.
- The product can be divided into pieces of size and weight that can be carried in by an elevator, eliminating the need for large-scale construction work.
- Construction can be done after the building is constructed, while the tenant is still operating.
structure
elements
It consists of a vibration mass, frame (body and base), electromagnetic brake, servomotor, acceleration sensor, and control panel.
principle
Vibration of the vibration control target (floor, etc.) is monitored by acceleration sensors, control calculations are performed in real time to reduce the vibration, and the actuator drives the vibration mass.
The program is also tuned to match the characteristics of the measured floor and other items.
(technical) specification
| model number | Vibration mass [kg] | Actuator maximum control force [N] | Equipment size [mm] | Mass [kg] | Frequency range [Hz] |
| AMDH-1000sb | 1000 | 7000 | 1845×1100×1160H | Approx. 1800 | 0.5～3.5 |
AMDV-50sl (Vibration mass 50 kg type)
The main unit and control panel are separate.
AMD device body
(Cover 180 kg)
control panel
Example of Construction
Example of rooftop installation on a certain building (AMDH-1000sb)
Actual simulation results
Time history waveform of a 9-story building subjected to external wind forces
Occupant Performance Rating (2018) 1 rank improvement, with vibration acceleration reduced by 1/2.
Related Pages
AMD vs TMD In-depth Comparison
This report compares AMD (Active-Mass-Damper) and TMD (Tuned-Mass-Damper), which are commonly used for vibration control of building floors, in terms of features, cost, and maintainability.
Introduction of related useful contents
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Downloadable Materials
Introduction to Horizontal AMD
Features, benefits, and specifications of horizontal AMDs, which are compact in size, reduce unpleasant horizontal sway, and can be installed after measures & while in existing buildings.
⇒Let's look at some of the materials
Introduction to AMD Series
This page introduces the features and installation examples of AMDs, which solve various vibration problems with power in a space-saving manner. We summarize the key points of AMD, which can deal with a wide range of unpleasant vibrations such as walking vibration, equipment-machine vibration, and vertical vibration at live performances, etc.
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AMD Questions Resolved! Frequently Asked Questions Q&A -Floor Shaking Countermeasures
Frequently asked questions about TMD are summarized in a Q&A format. Please use it as a reference for product selection and countermeasures.
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Past Webinars on Demand
Would you like to diagnose & improve that floor shaking problem with Yacmo's AMD?
The causes of floor sway and the basics of effective vibration control as a countermeasure are explained, and several examples of improvements made by AMD are presented.
Simple Selection Method for Wind Vibration Damping Devices (AMD, TMD)
Among the vibration control devices widely known as wind and microvibration countermeasures for habitability of building structures, this section explains how to determine simple specifications for passive-type TMDs and active-type AMDs.
[New Product] Compact size AMDs that can be used after the fact are introduced.
We will introduce our new compact-sized horizontal AMDs that can be used as post-construction measures for new products to address wind, traffic, and other vibration problems related to habitability that have occurred after the completion of construction of mid- and high-rise buildings.