Recently, there has been a number of experimental studies convincingly demonstrating that a suspension of self-propelled bacteria (microswimmers in general) may have an effective viscosity significantly smaller than the viscosity of the ambient fluid. This is in sharp contrast with suspensions of hard passive inclusions, whose presence always increases the viscosity. Here we present a 2D model ...

Active suspension designs rely on knowledge of system parameters such as vehicle mass to achieve their objectives of improved passenger comfort and road handling. Recently, we proposed a novel nonlinear design methodology for active suspensions, which uses a nonlinear control objective to explicitly incorporate rattlespace travel limits and prevent the suspension from hitting them. We have also...

depression is a heterogenous, multifaceted disorder with symptoms manifested at the psychological, behavioral and physiological level. therefore, present study was designed as a model to analyze the long lasting effects of methylmercury chloride in male rats with a focus on depression like behavior. male albino rats of wistar strain were exposed orally to a dose of 2 mg/kg of methylmercury chlo...

In order to identify the reasons for decrease in efficiency of vehicles equipped with traditional suspension designs and promis-ing areas improving their efficiency, an analysis was made results a review studies obtained scientific field under consideration by foreign Russian scientists. The article substantiates relevance increasing suspensions specialized trucks road trains operated difficult...

The vehicle semi-active suspension system plays an important role in improving the driving safety and ride comfort by adjusting coefficients of damping spring. main contribution this paper is proposal a PPO-based vibration control strategy for system, which designed reward function realizes dynamic adjustment according to road condition changes. More specifically, different performances caused ...

In this paper an H∞ controller is designed for a hydraulically actuated active suspension system of a half-modeled vehicle in a cascade feedback structure. Using the proposed structure the nonlinear behavior of actuator is reduced significantly. In the controller synthesis, a proportional controller is used in the inner loop, and a robust H∞ controller forms the outer loop. Two H∞ controllers a...

Suspension systems are one of the main parts vehicle that provide passenger comfort and stability, while it is difficult for conventional passive suspension to cope with vibrations which exposed. Air have a dynamic character allows good handling road comfortable ride, but in certain area this reason stiffness air must be flexibly changed. The has been developed inclusion hydraulic actuator crea...

In this study, an effective and new design method was used to determine the parameters of PID controller in order improve performance a vehicle's active suspension system suppress vibrations vehicle. method, is designed based on optimal proportional gain kp setting, taking into account settling time maximum overshoot quarter vehicle system. This obtaining other by adjusting minimize error stabl...