An Approach to Synthesis of a Class of Electric Drives with Dual-Zone Speed Control

Abstract

An approach to dual-zone speed control of DC motor electric drives is presented in this paper. The new point is that in the syntheses of controllers a combination between setting of closed-loop system poles (modal control) and optimal control through the quadratic quality criterion minimization is applied. Optimal modal control is achieved whereat a new type of complex criterion for selection of the functional is used. This approach allows taking into consideration the controlled object parameters' change at determination of the optimal modal controller coefficients when speed is regulated above the rated value. The research carried out as well as the results obtained can be used in the design, optimization and tuning of such types of drive systems

Functional Control Synthesis of Single-Phase Low Power Motor Drives

“…The behavior of motor drive with single-phase commutated series-wound motor is described by the following differential equation system [3,14,[19][20][21][22][23]:…”

Study of spindle drives for boring machines

“…In [11] a DC electric drive system with dual-zone speed regulation is presented, where control shift is a function of the motor back EMF voltage. Using an appropriate vector-matrix description of the controlled object, in [12] an optimal modal speed controller for the first zone is synthesized, as well as an adaptive optimal modal controller of the back EMF voltage for the second speed zone. To improve the electric drive performance an adaptive speed controller with switchable structure is developed [13].…”

Performance Improvement of a Type of Turning Machines

“…Various electric drives are analyzed to choose appropriate solutions meeting the static and dynamic characteristics of the respective machine axes and spindle [4]- [9]. A number of electric drives for some coordinate axes and spindles have been studied by means of computer simulation and experimentally [10]- [13].…”