White Papers, Catalogs, Case Studies and Resources for Engineers and Professionals
To ensure clarity of signal from your encoder, and avoid excessive electrical noise, there are several options and installation considerations to take into account. This white paper will focus on strategies and ways to reduce noise and signal distortions to ensure the signal from your encoder remains clean and uncorrupted.
Let’s take a look at a practical tuning exercise and take a closer look at the real effect of the various gains. Digital servo drive and motor with encoder feedback will be used to illustrate the effects of the various gains, as well as to provide some practical guidelines.
One of the best ways to evaluate PID tuning, is to look at the step response of a system.
Primatics was contracted to design and build a 5-axis, high precision sorter system. Two of the axes were to be in a gantry form of a 500 mm travel Y, Y’ with a 1300 mm travel X cross axis supported by the Y carriages. The X carriage was to carry a 50 mm travel Z axis which in turn would carry the customer’s 9 kg tool set. The gantry was to be built on a granite plate supported by a welded steel frame with the Y & Y’ axes elevated above the plate on 171.5 mm tall granite risers on the right & left sides. A cable management system from the granite plate to the Z axis for the customer’s tools was also to be provided. The budget for the overall system was moderate.
Feedback is used in closed loop systems in applications across all markets to control speed and/or position, and it has an important role in keeping equipment operating smoothly and accurately. This guide provides an overview on open and closed loop systems, hall sensors, and also covers encoder options, resolvers, and more.
Incremental encoders are used on motors and equipment as feedback devices to determine position and direction of machinery. Motor controllers can also use position information from the encoder to commutate the motor and calculate velocity for speed control. The incremental encoder is a critical component that provides important data necessary for the precise control of a variety of motion systems. This paper describes the output of a typical incremental encoder.
Traditionally, reflective encoders have been considered a lower end option used when cost was more important than options. Whether needing high CPR, an index channel or compact sizes, it’s time to reevaluate reflective technology. New encoders are still economical but now offer improved performance with the availability of many output configurations.
Requirements vary according to the application, so finding the matching encoder is not an easy thing. As a remedy, Baumer offers a modular encoder platform. The incremental encoders of the OptoPulse series are available in all common flange designs, with solid or hollow shafts up to 15 mm, several connection options and max. 5000 line counts per revolution.
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Find out how POSITAL’s UBIFAST programming tool can be used to configure IXARC incremental and hybrid incremental/absolute encoders, right at the job site. Get the performance characteristics you need, quickly and conveniently.  |
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Incremental encoders are used on servo motors as feedback devices to determine position and direction. Motor controllers can also use the position information from the encoder to calculate velocity for speed control. The incremental encoder is a critical component that provides important data necessary for the automatic control of a variety of motion systems.  |
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Worldwide applications use feedback for speed and/or position control. Feedback’s important role in the machine is to make sure that the machine delivers performance, precision, and accuracy. The following presents guidelines on how to select feedback for an application.
A feedback sensor must be capably of measuring the correct control variable ie speed, direction, position, with sufficient resolution. In general, guidelines suggest resolution 10 times higher than the specified accuracy of the variable being monitored. Feedback is usually mounted on the motor; however some applications use feedback directly on the load. This introduces mechanical play and dead times. A high quality control should be used to allow for compensation of these potential situations.