An Optimum Design Approach Using Active and Semi-Active Suspensions for 3-D Vehicle Models

2000 ◽  
Author(s):  
M. Bouazara ◽  
M. J. Richard
Keyword(s):  
Mathematical Model ◽  
Dynamic Behavior ◽  
Optimum Design ◽  
Active Suspension ◽  
Design Approach ◽  
Road Vehicles ◽  
Active Suspensions ◽  
Seat Position ◽  
Non Linear ◽  
Suspension Models

Abstract The primary purpose of this paper is to analyze the effects of vibrations on the comfort and stability of road vehicles as observed in the variation of different parameters such as suspension coefficients, road disturbances and the seat position. The conducting of this study required the development of a mathematical model to simulate the dynamic behavior of a 3-D vehicle. This model makes it possible to efficiently use various types of non-linear suspensions such as active and semi-active suspensions. The results obtained from the simulation of the 3-D vehicle demonstrated that the use of active and semi-active suspension models on road vehicles proved to be beneficial for comfort without unduly compromising stability.

Nonlinear Identification of a PUMA Manipulator Arm MA2000

2014 ◽  
Vol 704 ◽  
pp. 288-292
Author(s):  
Diana Katheryn Poveda Rodríguez ◽  
Villamizar Mejía Rodolfo ◽  
Jose Jorge Carreño Zagarra
Keyword(s):  
Mathematical Model ◽  
Fourier Series ◽  
Linear Model ◽  
Dynamic Behavior ◽  
Nonlinear Model ◽  
Angular Position ◽  
Nonlinear Identification ◽  
Non Linear ◽  
Manipulator Arm ◽  
Finite Sum

This article deals with the tuning of a simplified non-linear model that represents the dynamic behavior of the manipulator arm PUMA MA2000, where excitation signals formed by a finite sum of harmonics Fourier series were used in order to obtain arm dynamical responses. Initially, non-linear mathematical model is derived by using the Euler-Lagrange notation, and then a simplified nonlinear model is obtained and tuned by using the experimental angular position measurements for waist, shoulder and elbow robot joints.

Toward Electronic Work Design

1988 ◽  
Vol 32 (11) ◽  
pp. 622-626
Author(s):  
Yung-Hui T. Lee
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Objective Function ◽  
Dynamic Behavior ◽  
Linear Constraints ◽  
Work Design ◽  
Manual Lifting ◽  
U Statistics ◽  
Non Linear ◽  
Work Done

The dynamic behavior of a musculoskeletal link system in manual lifting is simulated by a mathematical model which contains a non-linear objective function and a set of linear, as well as non-linear constraints. The model was developed based upon the hypothesis that an individual performs the lifting motion following the principle of minimizing mechanical work done. The simulation model demonstrated that the associated differences between the predicted motion and the measured motion is biomechanically feasible and the accuracy is adequate enough with an average U statistics ranging from 0.012 to 0.2 09.

Robust Design of 4-Position Motion Generation and Application on Front End Loader

2012 ◽  
Vol 220-223 ◽  
pp. 736-739
Author(s):  
Wei Xiang Qian
Keyword(s):  
Mathematical Model ◽  
Optimum Design ◽  
Robust Design ◽  
Design Approach ◽  
Engineering Practice ◽  
Motion Generation ◽  
Robust Solution ◽  
Kinematic Accuracy ◽  
Front End ◽  
The Mathematical Model

A robust design approach of 4-position motion generation is presented, and it is applied in the design of front end loader. The mathematical model of optimum design based upon the engineering requirements has been established, by which feasible robust solution regions adhering to conventional constraints and kinematic accuracy requirements can be visually represented. It guides designers to synthesize robust mechanisms that ensure every design condition. The example of front end loader demonstrates that the process of searching the optimal robust mechanism is more intuitive, highly accessible and easy to be applied in engineering practice.

Imprecision of Laboratory Determinations and Diagnostic Accuracy: Theoretical Considerations

1974 ◽  
Vol 13 (03) ◽  
pp. 151-158 ◽  
Author(s):  
D. A. B. Lindbebo ◽  
Fr. R. Watson
Keyword(s):  
Mathematical Model ◽  
Diagnostic Accuracy ◽  
Diagnostic Process ◽  
Clinical Laboratories ◽  
Non Linear ◽  
Theoretical Considerations ◽  
Made In

Recent studies suggest the determinations of clinical laboratories must be made more precise than at present. This paper presents a means of examining benefits of improvement in precision. To do this we use a mathematical model of the effect upon the diagnostic process of imprecision in measurements and the influence upon these two of Importance of Diagnosis and Prevalence of Disease. The interaction of these effects is grossly non-linear. There is therefore no proper intuitive answer to questions involving these matters. The effects can always, however, be calculated.Including a great many assumptions the modeling suggests that improvements in precision of any determination ought probably to be made in hospital rather than screening laboratories, unless Importance of Diagnosis is extremely high.

Glycemia monitoring

1998 ◽  
Vol 2 ◽  
pp. 23-30
Author(s):  
Igor Basov ◽  
Donatas Švitra
Keyword(s):  
Diabetes Mellitus ◽  
Mathematical Model ◽  
Numerical Methods ◽  
Differential Equations ◽  
Blood Sugar ◽  
Self Regulation ◽  
Physiological System ◽  
Non Linear ◽  
The Mathematical Model

Here a system of two non-linear difference-differential equations, which is mathematical model of self-regulation of the sugar level in blood, is investigated. The analysis carried out by qualitative and numerical methods allows us to conclude that the mathematical model explains the functioning of the physiological system "insulin-blood sugar" in both normal and pathological cases, i.e. diabetes mellitus and hyperinsulinism.

scholarly journals MODELING AND PRODUCTIVITY PREDICTION OF THE COMPANIES-INTERNAL CROWDSOURCING-BASED IDEATION

2021 ◽  
Vol 1 ◽  
pp. 2147-2156
Author(s):  
Pavel Livotov
Keyword(s):  
Mathematical Model ◽  
Finite Number ◽  
Research Question ◽  
Performance Function ◽  
Non Linear ◽  
Series Of Experiments ◽  
Productivity Prediction ◽  
A Company

AbstractThe internal crowdsourcing-based ideation within a company can be defined as an involvement of its staff, specialists, managers, and other employees, to propose solution ideas for a pre-defined problem. This paper addresses a question, how many participants of the company-internal ideation process are required to nearly reach the ideation limit for the problems with a finite number of workable solutions. To answer the research question, the author proposes a set of metrics and a non-linear ideation performance function with a positive decreasing slope and ideation limit for the closed-ended problems. Three series of experiments helped to explore relationships between the metric attributes and resulted in a mathematical model which allows companies to predict the productivity metrics of their crowdsourcing ideation activities such as quantity of different ideas and ideation limit as a function of the number of contributors, their average personal creativity and ideation efficiency of a contributors’ group.

Optimum Design of Non Linear Power FET Amplifiers

1987 ◽  
Author(s):  
C. Guo ◽  
M. Camiade ◽  
D. Rousset ◽  
A. Cessey ◽  
J. Obregon ◽  
...  
Keyword(s):  
Optimum Design ◽  
Non Linear
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