In this paper, we introduce an efficient subgradient extragradient (SE) based method for solving variational inequality problems with monotone operator in Hilbert space. many existing SE methods, two values of are needed over each iteration and the Lipschitz constant or linesearch is required estimating step sizes, which usually not practical expensive. To overcome these drawbacks, present inertial algorithm adaptive estimated by using approximation local without running a linesearch. Each...

Dynamic response is a key parameter for the engineering applications of MR damper. However, time has many different definitions, and which leads to confusion measurement. Commonly, damper in new-designed status focused, instance after long-time use or standing-still not been proposed. In this paper, influence on by investigated, shows that largely lengthened. Next step, measurement will be optimized, consideration.

The alternating direction method of multipliers (ADMM) is an effective for solving two-block separable convex problems and its convergence well understood. When either the involved number blocks more than two, or there a nonconvex function, nonseparable structure, ADMM directly extend version may not converge. In this paper, we proposed ADMM-based algorithm multiblock optimization with structure. We show that any cluster point iterative sequence generated by critical point, under mild...

China FSAE race introduced formula racing gradually in the university campus order to make have better ride comfort, handling and stability. Design strength analysis of suspension were also proposed. Firstly, according whole layout racing, mode was selected, both front rear unequal push rod type double wishbone independent suspensions. Secondly, main parameters orientation structure preliminarily designed. The wheels alignment selected with all kinds stiffness, damping coefficient, followed...

Flow noise regeneration from perforated tube muffler element was measured on the self-developing test bench, relationship model total sound power of flow and structure parameters work condition established. Its were solved making use hyper static least square method. Using effect factors generation discussed. Result shows that reducing diameter part length is favor reduction noise, ratio expansion chamber have less noise. After analyzing spectrum it displayed with increase velocity projected...

The active vibration control of beam is researched by using piezoelectric constrained damping structure. energy characteristic each layer for the smart completely expressed based on finite element method and shearing movement relationship described ADF model. Then structure mechanics model dynamic parameters established. Applying displacement error signal, an adaptive filter controller designed. Under different outside disturbance, responses with are analyzed. It shows that can have good...

In order to obtain the parameters of viscoelastic damping material model, namely GHM, which account for frequency dependence and allow time-domain analysis composite structure, a new optimization algorithm is composed particle swarm optimization(PSO) sequential quadratic programming (SQP) presented . The results are compared with those standard rheological model fractional derivative as well experiment results. show that hybrid can better optimum solution have fast convergence , it will...

A multi-body dynamic rigid-flexible coupling model of an in-wheel motor vehicle is built. This based on a particular class-A car. An overall investigation the influence unsprung mass ride comfort conducted. With increment mass, decreased. The degradation wheel load performance most obvious. Suspension parameters are optimized and Response Surface Method. suspension deflection using improved significantly, while body vertical acceleration increased slightly.

Simulation of a permanent magnet synchronous motor (PMSM) servo system which was based on active disturbance rejection controller (ADRC) presented in this paper. A new Monte-Carlo method for parameter tuning invented, different values and their corresponding dynamic performance. What's more, according to the simulation results system, ADRC has advantages speedy response, no overshoot, high accuracy strong robustness against variations load disturbance. Finally, examples were provided...

Based on two-microphone transfer function method, the measuring method of incident sound power in duct is introduced, The special test equipment built, and measurement program written, effect factors are analyzed. Results shown that temperature, flow velocity, microphone spacing deviation complex reflection coefficient influences less program. Transmission loss perforated tube muffler with no measured using program, comparison carried out results finite element they agrees well, regeneration...

A new type of electromagnetic linear actuator for vehicle active suspension system is designed. Combined with the finite element analysis tool and induction principle, model mathematic are built up individually. Based on simulation results, a prototype developed. By comparison results experimental data, it shows correctness design model.