background knee osteoarthritis (oa) is a common joint disease and several different physiotherapy protocols have been recommended to provide pain relief and improve disability in patients with knee oa. objectives in order to find the effectiveness of local vibration application on knee oa complications, a randomized controlled clinical trial was designed to assess the changes in muscle torque, ...

In this paper the active vibration control of a four-story shear frame instrumented with piezoelectric actuators is presented. The piezoelectric actuators are hosted on the columns in two manners and the produced controlling forces by actuators are considered in the equation of motion. The smart structure modeling and control design is carried out using MATLAB software in state space form. Subs...

In this research, vibration control of national engine (EF7) using active mounts is studied for two different mounting layouts. The first layout is based on the current engine mounting of national engine (system of three passive mounts), but the hydraulic mount is substituted by an active mount. The other mounting layout contains 4 mounts, 2 of which are active ones and the others are passive m...

With the trend of lighter vehicle and more powerful engine (power plant) passengers are subjected to large vibration and harshness coming from the engine through the chassis. This paper discusses the application of active vibration control to reduce this vibration effect. Using a mass-spring-damper model which represents a passive engine mount, dynamic characteristic of the mount is obtained fo...

The present work demonstrates the successful application of a simple active vibration control procedure based on structural dynamics. Based on mathematical and structural dynamics’ theories, the appropriate locations of sensor and actuator locations of the smart structure are predicted. Also, the optimum value of actuator force which controls the structural vibrations as quickly as it is possib...

For active vibration control in linear systems, structural response of the controlled structure is the superposition of the response caused by external disturbances, which is defined as the primary response, and the response caused by the active vibration controller, which is defined as the control response. This structural vibration can be cancelled if the control response has equal amplitude ...

Abstract. Active Vibration Control (AVC) problem is successfully studied considering all the characteristics of a control problem. The controlled system consists honeycomb panel carbon fiber. Expensive devices are in general used for setting up and designing AVC this due to limitations practical implementation. In our work we point low cost solution using microcontroller that has been verified....