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Zamaraev

Optimization of an electrohydraulic actuator for a servo drive with throttle control
Engineering Education # 12, December 2013
DOI: 10.7463/1213.0637872
The paper presents a problem-solving procedure for selecting parameters of an electrohydraulic actuator in order to reduce response time and hydraulic power consumption. To perform such optimization design variables of an electrohydraulic servo drive were selected; objectives were proposed to estimate design alternatives. An example of two-criterion optimization of a servo drive with throttle control was presented. These criteria were control flow and response time. Multi-objective modification of a genetic algorithm was used to obtain a Pareto front approximation. The concept described in this paper is based on generalization of optimization methods for the electrohydraulic servo actuator known from literature references and includes new proposals on the algorithm structure
Optimization of power subsystem of electrohydraulic servo drive with throttling governing
Engineering Education # 11, November 2013
DOI: 10.7463/1113.0623966
This paper describes optimization of the power subsystem of an electrohydraulic servo drive with throttling governing. The electrohydraulic servo drive was considered together with an electrohydraulic power amplifier replaced by a proportional link. Variable parameters were selected and objective functions for design alternatives were proposed in order to optimize the electrohydraulic servo drive. An example of two-criterion optimization of the power subsystem was considered in this paper. These criteria were nearness of phase-response characteristic to the axis of abscissae and the mass to power ratio. Multi-criterion modification of genetic algorithm was used to obtain the Pareto front. The described concept is based on generalization of optimization methods for the  electrohydraulic servo drive known from literature references and includes new proposals on the structure of the optimization algorithm.
Concept of optimization of an electrohydraulic servo drive with throttle regulation
Engineering Education # 06, June 2013
DOI: 10.7463/0613.0569281
This paper presents a technique of sequential optimization of an electrohydraulic servo drive. The electrohydraulic servo drive was considered as a set of subsystems of level 1 (Lv. 1) and level 2 (Lv. 2). At level 1 the electrohydraulic servo drive was considered together with an electrohydraulic servo valve replaced with a proportional link. A two-stage nozzle-flapper servo valve with mechanical feedback from the spool to the flap was selected at level 2. Objective functions were proposed to estimate project variants of each subsystem. Optimization by investigation of parameter space using the method based on the LP-sequences or genetic algorithms were presumed to be suitable. The concept described in the article is based on generalization of methods of electrohydraulic servo actuator optimization, which are known in the literature, and includes new proposals on the structure of the optimization algorithm. 
 
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