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The role of sensor systems for mechanical manufacturing is generally composed of sensing, transformation/conversion, signal processing, and decision making, as shown in Figure 1.3-1. The output of the sensor system is either given to the operator via a human-machine interface or directly utilized to control the machine. Objectives, requirements, demands, boundary conditions, signal processing, communication techniques, and the human-machine interface of the sensor system are described in this section. . | Sensors in Manufacturing. Edited by H.K. Tbnshoff I. Inasaki Copyright 2001 Wiley-VCH Verlag GmbH 24 1 Fundamental ISBNs 3-527-29558-5 Hardcover 3-527-60002-7 Electronic 1.3 Sensors in Mechanical Manufacturing - Requirements Demands Boundary Conditions Signal Processing Communication Techniques and Man-Machine Interfaces T Moriwaki Kobe University Kobe Japan 1.3.1 Introduction The role of sensor systems for mechanical manufacturing is generally composed of sensing transformation conversion signal processing and decision making as shown in Figure 1.3-1. The output of the sensor system is either given to the operator via a human-machine interface or directly utilized to control the machine. Objectives requirements demands boundary conditions signal processing communication techniques and the human-machine interface of the sensor system are described in this section. 1.3.2 Role of Sensors and Objectives of Sensing An automated manufacturing system in particular a machining system such as a cutting or grinding system is basically composed of controller machine tool and machining process as illustrated schematically in Figure 1.3-2. The machining command is transformed into the control command of the actuators by the CNC Fig. 1.3-1 Basic composition of sensor system for mechanical manufacturing Fig. 1.3-2 Role of sensors in automated machining system 1.3 Sensors in Mechanical Manufacturing I 25 controller which controls the motion of the actuators and generates the actual machining motion of the machine tool. The motion of the actuator or the machining motion of the machine tool is fed back to the controller so as to ensure that the relative motion between the tool and the work follows exactly the predetermined command motion. Motion sensors such as an encoder tacho-generator or linear scale are generally employed for this purpose. The machining process is generally carried out beyond this loop where finished surfaces of the work are actually generated. Most .
