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Piezo Controller Thermal Stability Comparison

Piezo controller design can have a significant effect on thermal stability, causing excessive error in precision motion applications. In this technical note, we briefly describe some techniques used for controlling thermal effects and compare the thermal stability of Aerotech’s piezo control electronics with a competitive design. Thermal stability is paramount in any precision process. Thermal…

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Advanced Motion Control Optimizes Mechanical Micro-Drilling

In micro-drilling process equipment, the most popular ways to create microvias (blind or buried vias with a diameter ≤150 µm) are mechanical drilling and laser drilling. Mechanical drilling is mainly used in larger apertures such as PCBs or IC substrates. Laser drilling is mainly used in finer apertures such as silicon wafers, ceramic substrates and…

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Part-Speed Position Synchronized Output

Part-Speed Position Synchronized Output (PSO) is a new tracking mode for Aerotech’s PSO advanced controller feature. Part-Speed PSO commands high-speed, low-latency output pulses based on the commanded vector velocity. Extending PSO Capabilities Aerotech’s PSO controller feature has long been used by industrial and research users alike to command their process tool – a laser, sensor,…

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High-Bandwidth Force Control

Traditionally, linear stages are used with encoders to position to precise points in a motion profile. These encoders are used for both positioning and, in the case of brushless servomotors, for motor commutation as well. However, in certain applications like material press-bonding, position is not as important as force. When binding two materials together, if…

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Advanced Motion Control for Precision Drum Writing

Precision mechanical equipment, integrated advanced controls, laser control features and software come together to advance the state-of-the-art in drum writing. High precision roll-to-roll manufactured drums are used to produce everyday items sold around the world. For example, these drums are used to manufacture credit card security holograms as well as special films to increase a…

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Synchronizing Position Synchronized Output (PSO) with Mode Locked Lasers

Many lasers are limited to firing pulses based on an internal clock source and cannot be asynchronously triggered from an external signal such as Aerotech’s Position Synchronized Output (PSO) feature. One approach to working with this laser type is to set the pulse width of the PSO output to be the same as the period…

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Aerotech’s EasyTune Advanced Autotuning Tool

When a user finds that the accuracy of a motion control application is low, such as unacceptable following error due to friction, low frequency disturbance, etc., they will normally first increase the servo loop gains to reduce the following error. Unfortunately, this “quick fix” can result in excess gains that make the system unstable. In…

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Motion Control with Precision Noncontact Displacement Sensors

Introduction Noncontact displacement sensors are used in measurement applications where surfaces or processes do not allow contact and demand high precision. Capacitive, confocal, eddy-current and laser triangulation sensors have proven themselves in applications that incorporate motion systems. Noncontact sensors are available in many different versions. However, sensor range decreases significantly as the required precision increases.…

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Line Following in the Packaging Industry

Sophisticated control capabilities and servomotors are the next logical advances to replace stepper motors in typical line following packaging applications. There are many variations of line following applications within the packaging industry including labeling, cut-to-length, fly cutting, lane diversion, rotary knife and more. All of these line following applications have the same machine functions at…

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Customized Relationships and Coordinated Motion with AXISSTATUSFAST

Many applications require custom coordinated relationships between a system parameter or ancillary motion equipment and the motion of the primary machine mechanics. Likewise it is common to need custom kinematic transformations between a virtual programming coordinate frame and that of the real mechanics. Aerotech’s AXISSTATUSFAST command is an ideal tool to program these relationships and…

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