Control loop for finding initial translator position of linear synchronous motor

This article presents a simple and reliable method for controlling the relative orientation between the two magnetic fields of a permanent magnet synchronous motor. Finding the initial (at motor powering- up time) value of this relative location is essential for the proper operation of the motor. After showing the system controllability, the utilized feedback control loop finds this initial relative orientation quickly and accurately. Further, using the proposed method allows considerable cost saving, as a transducer that is usually used for this purpose can be eliminated. The cost saving is most obvious in the case of linear motors and angle motors with large diameters. The way the problem is posed is an essential part of this work, and it is the reason behind the apparent simplicity of the solution. The method proposed relies on a single sensor, and it was tested when a relative encoder was used.

A loop-shaping approach to intelligent control

In this paper, we propose a loop-shaping approach to in telligent control with dynamically constructed neurocon troller. In the proposed control scheme, the process uncer tainly is reduced in the controller rather than in the process, without explicit identification of the process under control. The inherent noise/distrurbances in the process are utilized to satisfy persistency of excitation condition. The use of a reference model in form of a filter allow the frequency response of the closed-loop to be adapted in line with the changes in frequency response of the filter. The approach is evaluated on the example of control of polymerization reactor with promising results.

Closing the loop on student evaluations

It is generally agreed that good teaching is dependent on the nature of the learning goals and the quality of the environment in which learning takes place1,2. If this is the case, then planned as opposed to unplanned variations in learning experiences are the hallmark of good teaching. This raises a complex set of relations between assuring and improving teaching within an institution. The essential question for a University is: how do we assure that learning is maximised in all given contexts?

Benchmarking the use of student feedback was identified as a priority project at the ATN annual conference in February 2002. This paper presents a number of issues arising from a study of practices across the ATN in relation to collecting, analysing and using student feedback. The project involved working with those responsible for teaching and learning improvements at the operational level to identify strategies for a systematic approach to the use of student feedback for improving communication of actions arising from results.

The framework for the inquiry involved an exploration of student feedback systems as they operate for different cohorts of students, differing measures (or constructs), and at different levels within institutional structures. The framework also explored the various tracking and reporting systems by which results generated from student feedback systems at each level were utilised to develop strategies for improving teaching and learning. Findings from the study were used to inform recommendations in relation to internal practices within each University, as well as initiatives for benchmarking student evaluation results across universities within the ATN network.

Heartbeat loop (SUSPENSE style)

Heartbeat Loop is an audio loop of a bass sound emulating a heartbeat. A good piece for suspense.

Halloween church bells loop SFX

A sound effect of a creepy styled church bell that loops.

To say goodbye loop

A composition that has a deep and longing feel to it. It evokes loss and love and features guitar, drums, synths and gated vocals in the bridge.

(Joyful pop-rock) heaven (mandolin rock) LOOP

A short and uplifting composition (looped) that is joyful in tone. Heaven is a track that is predominantly played on a real electro-acoustic mandolin - a versatile and sweet sounding instrument that punches above its weight to create a modern pop rock sound. The other sounds are a sampled bass, drums and a synth pad.

Agitate loop 01

Agitate Loop 1 is an instrumental piece featuring some experimental sounds (a crystal wine glass being tapped and a plastic wrapper being ripped and processed) and more traditional sounds piano/guitar and synths (several pads and a drum beat) put together to create an atmosphere of tension.

Agitate loop 02

Agitate Loop 02 is an instrumental piece featuring some experimental sounds (a crystal wine glass being tapped and a plastic wrapper being ripped and processed) and more traditional sounds piano/guitar and synths (several pads and a drum beat) put together to create an atmosphere of tension.

All change COUNTRY MUSIC loop

All Change Loop is a country & western instrumental featuring rhythm guitar, lead banjo, rhythm banjo, fiddle and upright bass with a wooden barn echo.