Concentrating plants thickening circuits and return water systems design problem areas

2016 ◽  
pp. 58-62
Author(s):  
A. V. Bauman ◽  
Keyword(s):  
Design Problem ◽  
Systems Design ◽  
Water Systems ◽  
Return Water

A Systems Approach to Structural Topology Optimization: Designing Optimal Connections

1996 ◽  
Author(s):  
Tao Jiang ◽  
Mehran Chirehdast
Keyword(s):  
Topology Optimization ◽  
Design Problem ◽  
Large Scale ◽  
Optimization Problem ◽  
Systems Design ◽  
Mathematical Programming Problem ◽  
Structural Topology Optimization ◽  
Structural Topology ◽  
Topology Optimization Problem ◽  
Wide Range

Abstract In this paper, structural topology optimization is extended to systems design. Locations and patterns of connections in a structural system that consists of multiple components strongly affect its performance. Topology of connections is defined, and a new classification for structural optimization is introduced that includes the topology optimization problem for connections. A mathematical programming problem is formulated that addresses this design problem. A convex approximation method using analytical gradients is used to solve the optimization problem. This solution method is readily applicable to large-scale problems. The design problem presented and solved here has a wide range of applications in all areas of structural design. The examples provided here are for spot-weld and adhesive bond joints. Numerous other potential applications are suggested.

scholarly journals Towards Design of Quasilinear Gurvits Control Systems

2019 ◽  
Vol 18 (3) ◽  
pp. 678-705
Author(s):  
Anatoly Gaiduk
Keyword(s):  
Nonlinear Systems ◽  
Nonlinear Control ◽  
Equilibrium Point ◽  
Control Systems ◽  
Design Problem ◽  
Systems Design ◽  
Nonlinear Control Systems ◽  
Proved Theorem ◽  
Control Systems Design ◽  
Nonlinear Plants

The design problem of control systems for nonlinear plants with differentiated nonlinearity is considered. The urgency of this problem is caused by the big difficulties of practical design of nonlinear control systems with the help of the majority of known methods. In many cases, even provision by these methods of just stability of equilibrium point of a designing system represents a big challenge. Distinctive feature of the method of nonlinear control systems design considered below is the use of the nonlinear plants models represented in a quasilinear form. This form of the nonlinear differential equations exists, if nonlinearities in their right parts are differentiated across all arguments. The quasilinear model of the controlled plant allows reducing the design problem to the solution of an algebraic equations system, which has the unique solution if the plant is controlled according to the controllability condition provided in the article. This condition is similar to the controllability condition of the Kalman’s criterion. Procedure of the nonlinear control systems design on a basis of the plant’s quasilinear models is very simple. Practically, it is close to the known polynomial method of the linear control systems design. The equations of the nonlinear systems designed with application of the plant’s quasilinear models also can be represented in the quasilinear form. The basic result of this article is the proof of the theorem and the corollary from it about conditions of the asymptotical stability at whole of the equilibrium point of the nonlinear control systems designed on a basis of the plant’s quasilinear models. For the proof of the theorem and consequence, the properties of simple matrixes and known theorems of stability of the indignant systems of the differential equations are used. A way of the stability research of the equilibrium point of the quasilinear control systems based on the proved theorem is illustrated by numerical examples. Computer simulation of these systems verifies correctness of the hypoyhesis of the proved theorem. Obtained results allow applying the method of nonlinear systems design on a basis of the quasilinear models for creation of various control systems for plants in power, aviation, space, robotechnical and other industries.

SOUth TOTO acoustic measurement facility (STAFAC) in-water systems design

OCEANS 2008 ◽  
2008 ◽  
Author(s):  
Phil DeNolfo ◽  
Mike Harrison ◽  
Hugh Thomson ◽  
Mark Greise
Keyword(s):  
Systems Design ◽  
Water Systems ◽  
Acoustic Measurement ◽  
Measurement Facility

scholarly journals Resilient by design: the case for increasing resilience of buildings and their linked food-energy-water systems

Elem Sci Anth ◽  
2018 ◽  
Vol 6 ◽  
Author(s):  
Iris Tien
Keyword(s):  
Systems Design ◽  
Building Design ◽  
Business Case ◽  
Water Systems ◽  
Economic Incentives ◽  
Integrated Network ◽  
Design Elements ◽  
Food Energy ◽  
Design Practices ◽  
Resilient Design

The resilience of buildings and food, energy, and water systems (FEWS) to natural or manmade disruptions are closely linked. The resilience of a building goes beyond the safety of its structural elements and must include the resilience of its supporting systems and the services they supply. The resilience of FEWS, in turn, can increase through design elements of a building that affect generation and storage of FEW resources. In this commentary, I discuss increasing the resilience of buildings and their linked FEWS—improving their resistance, absorption, restoration, and adaptive capacities—through new integrated systems design practices. I begin with a discussion of the current state of building design at the FEW nexus. I then use the prior establishment and current use of sustainability design objectives as an analogue to developing and implementing resilience design objectives. I review progress and limitations of specific drivers for increasing resilient design practices, including economic incentives, regulations, extralegal programs and initiatives, and societal incentives. My recommendations for leveraging these drivers to increase resilient design include: for economic incentives, quantify the costs and benefits to make the business case for resilience; for formal regulations, specify increased building requirements with performance-based resilience objectives; for extralegal initiatves, integrate these resilience objectives with existing certification programs and award designs that address FEWS as an integrated network rather than as disparate systems; and for societal incentives, demonstrate public benefit to shift societal perceptions of resilience. Together, these actions will motivate the design of more resilient building and FEW systems to increase their longevity, performance, and robustness.

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