Today’s machine builders confront a new era of risks, as globalisation increases competition and the internet rapidly disseminates information about products and markets. The highest priority for designers of performance-driven machinery is to reduce the various risks confronted across the machine design, development and maintenance lifecycle.
In areas where removing water is not an option, slip hazards increase tenfold, and to prevent injuries serious considerations have to be made to stop visitors, employees or even you falling foul of potential slips and falls. Anti-slip tape —such as that available from Heskins — is a suitable back-up to your slip prevention methods, with the ability to apply it on any surface that may require some reinforcement.
As Cedrat explains in this paper, the permanent magnet synchronous motor (PMSM) is becoming popular in high-performance applications as compared with other types of AC motors. A short circuit between turns is the most critical fault in a machine; it is quite difficult to detect and almost impossible to remove. There are a number of techniques used to detect turn-to-turn faults.
This paper from Cedrat Technologies is devoted to the presentation of adaptive impact absorbers applied as aircraft landing gears. The presented work discusses a possibility of utilisation of active dampers based on piezo-actuators and magnetorheological fluids (MRF) as the actuator for the proposed system. Control issues of an impact absorption system are widely presented.
The measurement of moisture in natural gas is an important parameter for the processing, storage and transportation of natural gas globally. Natural gas is dehydrated prior to introduction into the pipeline and distribution network. However, attempts to reduce dehydration result in a reduction in ‘gas quality’. Consequently, to strike the right balance, it is important that the water component of natural gas is measured precisely and reliably.
The advantages of using adhesives over mechanical fasteners have been well documented. They include distribution of load and stress over wider surface areas, elimination of joint fatigue, improved impact resistance, reduction in finishing, and aesthetic enhancement. According to this white paper from Intertronics, design engineers will earn the gratitude of their production engineering colleagues if they can specify or allow for a light-curing adhesive.
There are many advantages to packaging two-component adhesives in convenient cartridges for use with static mixers. Two-component adhesive end users want their cartridges to be clean and free of leaks with the capability to dispense the adhesive to fit the intended application. This paper concentrates on the ways filling a cartridge can affect dispensing performance.
In order to maximise the performance of sensors, attention should be paid to the selection of the humble cable that connects the sensor with its instrumentation. As this article in the ‘Mike Might Know’ series from Sherborne Sensors explains, sensors — particularly those based upon strain gauges — have very low levels of output often in the micro-volt region. Noise pick-up must be minimised to ensure accurate results.
A tutorial on SAR type analogue-to-digital converters (ADCs), this application note from Linear Technology contains detailed information on several 12-bit circuits. Comparator, clocking and pre-amplifier designs are discussed. A final circuit gives a 12-bit conversion in 1.8µsec. Appended sections explain the basic SAR technique and explore digital-to-analogue considerations.
In recent years, the requirement for accurate virtual design has grown constantly. However, greater computational efficiency means less time to get results while performing rapid, detailed analyses on a device. The overall goal is to have a streamlined, automated and customised model creation and simulation process. This is even more important with FEM software, where simulation run times are usually very high.
The benefits of IP convergence, such as enhanced efficiency, improved manageability and lower cost of ownership, have long been the driving force behind the growth in the number of industrial Ethernet deployments for supervisory and control level applications. According to studies conducted by IMS Research, the global number of industrial Ethernet nodes at supervisory and control levels will continue to grow at an average rate of 15 per cent from 2010 to 2015. However, the number of ...
A new tip-tilt mechanism based on low-voltage piezoelectric actuators has been designed by Cedrat Technologies to answer the high level of stability required for the Earthcare satellite. The Beam Steering Assembly aims to deviate a pulsed high-energy UV laser beam to compensate for misalignment between the emission and reception paths of ATLID with a very high stability and resolution.
There exists a dangerous misconception regarding the ‘arc rating’ of infrared (IR) windows or viewing panes. Many reliability and maintenance professionals are under the impression that an IR window will protect them in the event of an arc blast; still others are under the impression that installing IR windows will turn non-arc-rated switchgear or electrical equipment into ‘arc-rated’ cabinets. Neither are the case and both misconceptions must be corrected because they present very ...
For many automated fluid dispensing processes, high-speed jetting technology is a new and innovative alternative to traditional, needle-based contact dispensing. Because high-speed jetting is non-contact (the jet valve never contacts the product or surface), it offers a higher degree of flexibility and can be used in a wider variety of applications that otherwise would require a costly Z-axis system with height-sensing and positioning functionality. True high-speed jetting is made possible ...
This application note from Linear Technology describes some of the unique IC design techniques incorporated into a fast, monolithic power buffer, the LT1010. Also, some application ideas are described such as capacitive load driving, boosting fast op amp output current and power supply circuits.