<span>In this paper, efficiency maximization of induction motor variable frequency speed regulation system based on torque per power (TPP) index is proposed. The detail the mathematical model considering iron loss and rotor field orientation, relationship between ratio slip presented. functional derived, derivative obtained to find optimal corresponding maximum value. simulation experimen...

Abstract The energetic advantages of series and parallel elastic actuators have been characterized in the literature considering different systems tasks. These characterizations usually determine energy consumption a specific system during task generalize poorly. This paper proposes an characterization actuators, following analytical approach, rather than data-driven one. In particular, this wo...

X.efficiency theory challenges the maximization postulate of standard economic theory. This paper shows that X-inefficiency is. at times, as much as 30 times greater than allocative inefficiency and suggests reasons for the existence of X-inefficiency—-i.e., (a) incomplete employment contracts, (b) discretionary effort, and (c) nonmaximization of profits. [The Social Sciences Citation Index® (S...

This study was conducted in Mouteh grinding circuit. Mouteh gold processing plant is located in Esfahan province,center of Iran, close to Mouteh open pit mine. One of the main problems in this circuit is low efficiency grinding operation. In this study, first grinding circuit and its performance parameters are evaluated. Laboratory and corrected operating Bond work index subsequently were calcu...

In this paper, we solve higher index differential algebraic equations (DAEs) by transforming them into integral algebraic equations (IAEs). We apply collocation methods on continuous piece-wise polynomials space to solve the obtained higher index IAEs. The efficiency of the given method is improved by using a recursive formula for computing the integral part. Finally, we apply the obtained algo...