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Gear Noise and Vibration Episode 1 Part 4 docx

Gear Noise and Vibration Episode 1 Part 4 docx

... involute 25 pitch error microns I I I I I I I I I I I I I I I I I I I I I I I I I I I -25 1 revolution Fig 4.4(a) Spurious readings of adjacent pitch error due to eccentricity. Trang 3The all-important ... helix corrections. In this discussion, end relief is used to describe a relief which is typically linear and is restricted to a short distance at either end of the helix, whereas crowning applies ... Fig 4.8 Sketch of effects of reliefs and misalignment on helix match. Trang 8pitch line ' root I wheel I involute pinion root negative tip reliefs set to zero combined tip relief I one baie pitch

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Gear Noise and Vibration Episode 1 Part 5 docx

Gear Noise and Vibration Episode 1 Part 5 docx

... interference proportional to damping coefficient times velocity divided by tooth stiffness (line 30) 20 10 0 time in milliseconds Fig 5.3 Prediction of contact force variation with time with helical gear. ... Trang 10-150 ex c "5, -170 10 time in milliseconds 20 Fig 5.4 Prediction of variation of pinion displacement with time. The total mesh force ff is generated in line 33 and is stored for plotting ... There is considerable simplification if we take the linear axis along the line of thrust and ignore any motion perpendicular as being small since it is only due to (small) friction effects which

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Gear Noise and Vibration Episode 1 Part 6 docx

Gear Noise and Vibration Episode 1 Part 6 docx

... bearing eccentricities As mentioned previously in section 1.6, universities, if required, can provide equipment, advice and guidance, undertake full investigations of problems, or can train personnel ... complex In addition, at low frequencies the equal and opposite quasi-static forces at wheel and pinion bearings tend to cancel so there is negligible vibration to measure None of this affects audible ... from 100 MQ, assisting stability of the output against sudden disturbances An alternative change is to use a 200 pF (1 %) capacitor in parallel with the 100 MQ resistor to increase sensitivity

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Gear Noise and Vibration Episode 1 Part 7 pps

Gear Noise and Vibration Episode 1 Part 7 pps

... rarely a limitation It can be avoided by using multiplying circuits [7] as in the original system but measurement is then influenced by vibration Results can also be obtained by using an approximate ... Measurement 105T.E I.E 1 revolution T.E 1 revolution T.E 1 revolution T.E 1 revolution I revolution Fig 7.9 Variation of T.E with speed due to internal dynamics. Trang 7Running up and down the ... so a friction or belt drive is used This tends to limit the rig dynamics severely and also the drive is no longer an exact ratio The drive ratio can usually be approximated with sufficient accuracy

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Gear Noise and Vibration Episode 1 Part 8 pdf

Gear Noise and Vibration Episode 1 Part 8 pdf

... II /I I 1 maxfreq of interest N ' 1 1 ii ii 1 1 1 r ii i i i t 20 Hz T sample frequency filter characteristic 4kHz 5kHz frequency 15kHz Fig 8.5 Typical frequency ranges for data recording and ... unlike using acceleration which is tiny at low frequencies or displacement which is miniscule at high frequencies Trang 7constant velocity regionlimiting displacement region limiting acceleration ... more time than is needed for a set of tests for noise investigation or development purposes If condition monitoring is being investigated then 44 hours is likely to be insufficient and techniques

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Intelligent Vehicle Technology And Trends Episode 1 Part 1 potx

Intelligent Vehicle Technology And Trends Episode 1 Part 1 potx

... references and index ISBN 1-58053-911-4 (alk paper) 1 Intelligent Vehicle Highway Systems I Title II Series TE228.3.B57 2005 2005041095 388.3′12—dc22 British Library Cataloguing in Publication Data Bishop, ... Satellite Positioning in Support of CVHS 191 9.4.2 LAVIA: The French Project of Adaptive Speed Limiter 196 9.5 Cooperative Intersection Collision Avoidance (ICA) 199 Trang 139.7.1 Traffic Assistance ... University; Michael Lambie of Meritor-WABCO; Hiroshi Makino and Takashi Nishio of MLIT in Japan; Meny Benady of Mobileye; the National Highway Traffic Safety Administration; Kenichi Egawa, Hiroshi

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Intelligent Vehicle Technology And Trends Episode 1 Part 2 pptx

Intelligent Vehicle Technology And Trends Episode 1 Part 2 pptx

... in fatalities by 2020 in fatalities compared to 1996 (2007) No road fatalities United Kingdom 40% reduction in fatalities and serious injuries (for nonmotorways) 10% reduction in minor injuries ... following sections describe some visions being promoted by research institutes and governments worldwide, beginning with safety-focused visions and then expanding into more holistic visions > 10,000,000 ... Asia-Pacific in fatalities in crashes 50% reduction in fatalities 50% reduction in all crashes Europe European Commission 50% reduction in fatalities cars equipped with ADAS in fatalities 40% reduction

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Intelligent Vehicle Technology And Trends Episode 1 Part 3 pot

Intelligent Vehicle Technology And Trends Episode 1 Part 3 pot

... automatically deliver a light beam of optimal intensity to maximize the illumination of oncoming road curves and bends Next generation adaptive lighting systems will use satellite positioning and digital ... driving environment, leaving any interpretation or action to the driver’s judgment Adaptive headlights provide better illumination when the vehicle is turning; night vision provides an enriched ... 53.1.1 Parking AssistParking-assist systems help drivers in avoiding the minor “dings” that can come with parking maneuvers This is particularly true in urban areas in Europe and Japan in which

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Intelligent Vehicle Technology And Trends Episode 1 Part 4 ppt

Intelligent Vehicle Technology And Trends Episode 1 Part 4 ppt

... studies on intervehicle communications For instance, NIAIST has defined the “ITS view-aid system,” described further in Chapter 12, in which driver monitoring is integrated with driver assistance ... from 1991 to 1995 and established the technolog-ical feasibility of crash-avoidance systems During phase 2 (1996–2000), design principles and guidelines were established and demonstration vehicles ... limit warning system using communications between the road and vehicles, and an intelligent automatic driving vehicle, which will be capable of platooning with other automated vehicles Additional

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Intelligent Vehicle Technology And Trends Episode 1 Part 5 docx

Intelligent Vehicle Technology And Trends Episode 1 Part 5 docx

... Within the United States, two states—California and Minnesota—have maintained significant and ongoing IV research programs Their activities are briefly outlined here California [38] The California ... and funding of precompetitive scientific level work, such as driver workload studies One example of a unique scientific investigation in the United States is the natu-ralistic driving studies sponsored ... automotive industry activity in the IV domain The following sections provide an indication of the driver support philosophies and emphasis areas for these major industry play-ers The information is

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Intelligent Vehicle Technology And Trends Episode 1 Part 6 doc

Intelligent Vehicle Technology And Trends Episode 1 Part 6 doc

... technology to the IV arena 5.2.1 Aisin Group [31, 32] Aisin is the second largest automotive supplier in Japan and consists of several sub-sidiaries, including Aisin Seiki Co Ltd and the IMRA R&D ... sensing, and collision mitigation Its current 24-Ghz radar unit is shown in Figure 5.7 Hella participated in European 5FW projects focusing on night vision and radar frequency allocations and is ... sensing, collision mitigation braking, lane departure warning, pedestrian recognition, and parking assist IBEO is cooperating with mirror systems supplier Lang Mekra for surveillance in near field

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Intelligent Vehicle Technology And Trends Episode 1 Part 7 ppsx

Intelligent Vehicle Technology And Trends Episode 1 Part 7 ppsx

... provides a continuous indication to the driver of vehicle position within the lane, via a simple graphical display Per Figure 6.2, lane position is shown as a vertical “dash” character moving ... Warning Field Operational Testing [19–22] In 2001, U.S DOT partnered with the University of Michigan Transportation Research Institute, Visteon Corporation, Navteq, and Assistware in a field ... (left) and combination processing and driver interface unit (right). (Source: AssistWare Technology.) Trang 2LDWS introduced by Infiniti and Citroën Autovue is sold as an integrated system installed

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Intelligent Vehicle Technology And Trends Episode 1 Part 8 docx

Intelligent Vehicle Technology And Trends Episode 1 Part 8 docx

... braking in a typical car is 1.0g) In cases where the closing rate to the vehi-cle ahead is high and the braking authority of the host vehivehi-cle is insufficient to avoid a collision, audible ... lidar-based ACC system, for instance, automatically disables if the driver switches the windshield wipers beyond the “intermittent” setting, as this is an indication of precipitation potentially ... ability to perceive the forward path is enhanced immensely Without night vision, the timing of a pedestrian coming within view of the headlights may give the driver very little response time if

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Intelligent Vehicle Technology And Trends Episode 1 Part 9 pot

Intelligent Vehicle Technology And Trends Episode 1 Part 9 pot

... protection function Honda Inspire Collision mitigation braking system Radar Audible alert plus impulsive braking .5 Pretensioning seatbelts President Intelligent brake assist ystem Lidar Audible ... information Limitations are intentionally built into this first generation system so as to increase detection reliability For instance, while the tech-nology is capable of detecting heat-emitting objects ... introduced in Chapter 4 Work began in 2004 and is addressing a full range of crash avoidance modalities In particular, the APALACI subproject is developing advanced precrash and collision mitigation

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Intelligent Vehicle Technology And Trends Episode 1 Part 10 doc

Intelligent Vehicle Technology And Trends Episode 1 Part 10 doc

... detection with digital maps showing intersection locations offers a high potential for alerting drivers to red traffic signals and warning them if they are not slowing appropriately With stop signs, ... object identi-fication, classiidenti-fication, and tracking; generation of environmental models; and situation analysis An example of the results of the perception process would be to classify a situa-tion ... sensors) to sup-port applications such as stop-and-go driving assistance Initially, the perception steps of object detection, track initialization, tracking, and data association are per-formed The

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Intelligent Vehicle Technology And Trends Episode 1 Part 11 pot

Intelligent Vehicle Technology And Trends Episode 1 Part 11 pot

... approaching the intersection Vehicle position, velocity, and heading; Warning Intersection collision warning Warns drivers when a collision at an intersection is probable Traffic signal status, timing, ... vehi-cle speed and braking status Traffic signal status and timing Traffic signal stopping location Traffic signal directionality Road surface condition Weather condition Stop sign violation ... DSRC Applications Based on Vehicle-to-Vehicle Communications Application Function Data communicated Range (m) Cooperative forward collision warning Aids the driver in mitigating or avoiding a forward

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Machinery Components Maintenance And Repair Episode 1 Part 2 pdf

Machinery Components Maintenance And Repair Episode 1 Part 2 pdf

... within a processingfacility The well-designed preventive maintenance and equipment recordssystem is built around failure of equipment description data Through thisfile, equipment inspection intervals ... creating safetyhazards, its position within the processing train or because of laws orcodes governing equipment inspection in certain cases Trang 5The system aids in scheduling inspection activities ... maintenancepersonnel—sometimes provide substantial justification for computersystems Improved equipment reliability, with resulting reductions in equipmentdowntime and improvements in plant throughput, are obvious

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Machinery Components Maintenance And Repair Episode 1 Part 3 ppsx

Machinery Components Maintenance And Repair Episode 1 Part 3 ppsx

... Planners, and also mechanical and maintenance supervisors provide machinery related data and support to the senior machinery specialist and turbotrain T/A engineers involved in planning and execution ... subject of on-line or off-line cleaning is beyond the scope of this text, but it is well worth considering in specific situations as it is a real time and money saver The bearings, journals, and ... Dozens of distinct types of resins are commercially available, and the term epoxy resin is generic It now applies to a wide family of materials Both solid and liquid resins are available * E

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Machinery Components Maintenance And Repair Episode 1 Part 4 doc

Machinery Components Maintenance And Repair Episode 1 Part 4 doc

... skid cavities To reduce this fire hazard it is common to provide open-ings between cavities for oil drainage With the usual inconsistencies ingrout level, complete oil drainage is not possible ... resulting in a poorinstallation Furthermore, when the mortar is cold, it is viscous and verydifficult to place tem-Conventional Grouting Concrete Characteristics Foundation design and machinery installation ... concrete and steel It is important that thethermal expansion coefficient of epoxy mortar approach that of concreteand steel in order to minimize edge lifting on foundation corners and tominimize stress

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Metal Machining - Theory and Applications Episode 1 Part 10 ppt

Metal Machining - Theory and Applications Episode 1 Part 10 ppt

... 1 192 Advances in mechanics Table 6 .1 Particular values of coefficients and variables in equation (6. 41) Case i dS / i lim 1 ,i lim 2 ,i A θ ,i t 1e ,i f cos ψ 11 dx′ x′ 1 x′ 2 A major ——— cos η ′ c f ... chip formation. Z′ is parallel to z and z′, still in the cutting direction, but X′ is normal to, and Y′ is in, the plane containing the cutting and chip velocities. In terms of the chip flow direction ... lim 2 ,i t 1e ,i A sh = S ∫ A q ,i ——— dS′ i (6. 41) i= l lim 1 ,i sin f e A number of special cases have been introduced in Figure 6 .15 . In Figure 6 .15 (a), for example, there are four intervals indicated...

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