#5 2011

CONTENTS № 5

Discussing a Subject…

Motion, displacement, and positioning control

Introduction

Grigoriev S.N., Andreev A.G., Martinov G.M.  Development prospect of cross-platform computer numerical control systems for high-tech equipment

The paper analyzes and substantiates the need of cross-platform solutions in the field of computerized numerical control (CNC). The development vector of modern control systems is determined, the base architecture of cross-platform CNC system kernel is offered. The specificity of various applied solutions based on PCNC systems is explained and illustrated with examples.

Keywords: cross-platform CNC system, control of peripheral devices, fieldbuses, cutting tool diagnosis, industrial robot control system.

Kukharenko S.Yu.  SIMATIC components for drive control and positioning systems

Standard and custom elements from SIMATIC hard-/software toolkit for motion, positioning, and drive control tasks are overviewed.

Keywords: displacement, positioning and control, drives, smart modules, process controllers.

Fomin E.I.  Measuring systems from HEIDENHAIN

Performance data, features, functionalities, and advantages of HEIDENHAIN's measuring systems are discussed. Basic system types are presented, novel technologies improving measurement quality and precision are described.

Keywords: instrument scale, sensing head, linear displacement sensor, rotation angle sensors, gage rod, photoelectric principle, transforming and interference sensing techniques, incremental and absolute measurements.

Tikhonov A.O., Likhanov P.S.  Diagnosis and tuning tools for ServoCon NC system

The paper presents the architecture of ServoCon NC system and describes the features of the control interfaces. It discusses the software tools intended for building the configuration and interactive parameter tuning of ServoCon NC system and the drives manipulated by this controller. The interactive tuning presumes the availability of a toolkit enabling the parametrization of all system`s axes, the analysis of transients performance both in the NC system ands in the system's actuators, the estimation of the complex dynamic error and system response speed.

Keywords: numerical control system, motion control, servo drive, digital interfaces, real time, transient, milling.

Burkov A.P., Krasil`nikyants E.V.  Design concepts of motion control system software

The problems related with the concept of software development for motion control systems intended for process units automation are discussed. Possible ways of hard- and software implementation of such systems are outlined. A design concept of a motion control system based on automaton implementation of logical control and motion control programs (PLC and PMC) by means of a virtual machine is offered. An implementation example of the automaton programming of PLC on the Forth programming language is adduced.

Keywords: motion control system, software, virtual machine, automaton description, programming language.

Martinova L.I., Pushkov R.L., Kozak N.V., Trofimov E.S.  Synchronization and precise axes positioning in NC system

The architecture and the specificity of synchronization and precise axes positioning subsystems in an open modular NC system are discussed. Practical results of solving these problems are discussed with examples from gear-milling machines and a coordinate inspection machine. Motion control features in the machines with portal layout of actuator motion axes.

Keywords: numerical control, working accuracy, axes synchronization, electronic gear-box, master and slave drives, gear milling, free kinematics.

Krasovsky A.A., Antonov A.Yu.  Motion control and positioning of a stepper motor

The paper discusses the opportunity of motion and positioning control for a stepper motor at various operating modes using digital outputs of ADC-DAC connected to a PC. The prototype was implemented in ZETView SCADA.

Keywords: stepper motor, SCADA system, automatic control systems.

Krasil`nikyants E.V., Varkov A.A., Tyutikov V.V.  Control system for a manipulation robot

Design concepts of a modern control system for a manipulation robot are formulated. The approaches to hard-/software architecture development are described, and the new IntNCR control system is presented.

Keywords: control system, manipulation robot, hardware, software, motion control.

Plikhunov V.V., Kovalenko A.V., Shlesberg I.S., Oreshkin O.M.  Investigation and choice substantiation of the control system configuration for a laser-plasma surface treatment unit

The automation of laser-plasma surface treatment control is discussed. Comparative analysis of basic functional models of equipment control systems is undertaken. Key equipment items are identified, and hard-/software components for treatment process automation are selected.

Keywords: numerical control, control system, laser, scanner, laser-plasma treatment.

Nezhmetdinov R.A., Sokolov S.V., Obukhov A.I., Grigoriev A.S.  Enhancement of numerical control systems' functionality for mechano-laser treatment control

The multipurpose architecture of a NC system for control of mechano-laser equipment is considered. The specificity of of NC systems application for controlling various kinds of laser processing, such as selective laser sintering of powder materials and laser engraving by low-frequency laser impulses, is examined. The multioperational machining center based on the hybrid technology combining traditional machining with laser processing is considered as an example of NC system application for controlling complex mechano-laser equipment.

Keywords: laser, NC systems, engraving, layer-by-layer synthesis, scanner, deflector, mechanolaser treatment

Mescheryakov V.A., Denisov I.V.  Operation algorithm of an adaptive neuro-fuzzy control system for jib crane operation

An information processing algorithm for jib crane operation is offered. The algorithm is implemented in the adaptive network-based fuzzy inference system (ANFIS). The system simulates human operator's actions during load positioning. The control action synthesis algorithm underlies the operation of the automatic control system.

Keywords: adaptive system, fuzzy logic, neuron network, jib crane.

EtherCAT simplifies precision cutting "in the air"

The paper describes the operation of Jentschmann 3796 combined welding-cutting unit from Jentschmann AG, Switzerland, its control system based on a PC and Beckhoff's EtherCAT technology, and precision positioning system.

Keywords: welding-cutting unit, positioning system, servodrive, dynamic control.

Robotized manipulations without a specialized robot guidance system

With the example of Manipulations and Robotics bench from Lenze the paper shows the possibility of using the machine control hardware for manipulator mechanism control.

Keywords: manipulations, robots, kinematics, controller, I/O system, interfaces.

Embedded NC system

Arkhipov V.S.  Automation of processing and analysis of information about machine reliability

Basic design concepts of applied software for reliability analysis of mass-consumption mechanical engineering products (reliability engineer's workstation) are discussed. The software is intended for the storage, analysis, and processing of reliability data and the calculation of reliability indicators per custom algorithms. The software developed in MS Excel environment enables the automation of the full set of reliability control tasks at the enterprise level. Aimed at tractor-building, it can be easily adjusted to adjacent industries.

Keywords: reliability, mechanical engineering, automation of information processing and analysis, applied software.