In this study, the active force cancellation performance of a robust H∞ controller is investigated on a near resonance vibrating system consisting of a rotating machine hard mounted on a flexible base. This configuration and phenomenon can be present in vehicle engine mounts. The model of the vibrating system was first identified experimentally. The uncompensated system frequency response is then used to design the controller. The control objective is to reduce the system (RMS) gain. The effectiveness of the controller has been demonstrated experimentally through implementation on a digital signal processor. Results show reductions of the measured RMS transmitted forces at different mount locations when the machine is operated at speeds near the principal mode of vibration. However at frequency where the vibration is not significant, the reduction in transmitted force level can be minimal.
- Inderscience Publishers
- Active force cancellation of a near resonance vibrating system ...
When only the best is good enough - Case Study
Recycling areas: Aluminium Company name: Alutrade Limited Located: Oldbury and Redditch, UK Founded: 1986 Employees: 100 Alutrade is one of the largest recyclers of aluminum extrusion scrap in the UK. They operate from a modern 100,000 square foot factory in the Birmingham area (Oldbury and Redditch). The central location coupled with a fleet of new vehicles, enables Alutrade to offer a 24 hour free collection service throughout the UK. The company is recognised as one of the countries leading aluminum...
University plans to provide 50 napkin incinerators to educational institutions
Trichy: Bharathidasan University has planned to provide 50 electrical sanitary napkin incinerators (ESNIs) worth about Rs 21 lakh to schools and colleges. In this connection, the university has signed a memorandum of understanding with BHEL, Trichy.Twenty-five electrical sanitary napkin incinerators were supplied to the identified institutions during the first phase that began last year.BHEL, under its corporate social responsibility (CSR) scheme, signed an agreement on Thursday with the Bharathidasan University&rs...
GHS Label Requirements
While the initial December 1, 2013 training deadline for the revised Hazard Communications Standard (HCS) has come and gone, companies are still responsible for providing employees with on-going safety data sheets and GHS label training. With this in mind, we thought it would be helpful to provide a recap of the six elements that are now required on a GHS label.In conjunction with updating your company’s hazard communications program, and updating all of your safety data sheets to meet the new 16 Section...
Learn how peak gas generators improved LC-MS analysis at Syngenta Crop Protection LLC - Case Study
Lou Mayer, Technical Expert at Syngenta Crop Protection LLC, a company which strives to transform how crops are grown to enable growers to make better use of available resources, explains how two nitrogen generators from Peak Scientific have improved LC-MS analysis at the organization. Name: Lou Mayer Title: Technical Expert Company: Syngenta Crop Protection LLC Location: North Carolina, USA Typically what is the focus of your LC-MS analysis - what sort of applications? Low level residue analysis of...
Free White Paper on FTIR Gas Analysis
Gasmet has prepared a White Paper on the simultaneous measurement of multiple gases in a wide variety of applications using FTIR (Fourier Transform InfraRed) technology. With the ability to measure almost any gas, FTIR monitoring technology is employed in an enormous variety of applications including Continuous Emissions Monitoring, Stack Testing, Process Control, Industrial Hygiene, Emergency / First Response, Greenhouse Gas Monitoring, Carbon Capture, Fire Testing, Research and many more. The same FTIR...