scholarly journals Development of Ryerson’s Hyperloop Pod Systems Using a Modular and Systematic Approach

2021 ◽  
Author(s):  
Mohammed Mohiuddin Khan
Keyword(s):  
Systematic Approach ◽  
Transportation Industry ◽  
Time Data ◽  
Revolutionary Change ◽  
Linear Induction ◽  
Braking System ◽  
High Speeds ◽  
Mission Control ◽  
Fail Safe ◽  
Fully Functioning

Ryerson International Hyperloop is a special projects team with the intent of developing a fully functioning Hyperloop Pod. The team believes in driving revolutionary change within the transportation industry, with the greater cause of saving time, and to help make Canadian cities more accessible. The Pod was designed using a systematic approach with modularity and reliability as major foci. Its design featured an innovative, student researched and developed linear induction based MagDrive, and MagLev systems for propulsion and levitation. The braking system featured a fail-safe pneumatic deployment system to facilitate braking at high speeds as well as a wireless “Keep Alive” command. The onboard hyperionics is entirely composed of student researched and developed components which provides an expansive communication range and the ability to transmit real time data back to the mission control through all states and stages of the Pod’s run.

scholarly journals Development of Ryerson’s Hyperloop Pod Systems Using a Modular and Systematic Approach

2021 ◽  
Author(s):  
Mohammed Mohiuddin Khan
Keyword(s):  
Systematic Approach ◽  
Transportation Industry ◽  
Time Data ◽  
Revolutionary Change ◽  
Linear Induction ◽  
Braking System ◽  
High Speeds ◽  
Mission Control ◽  
Fail Safe ◽  
Fully Functioning

Ryerson International Hyperloop is a special projects team with the intent of developing a fully functioning Hyperloop Pod. The team believes in driving revolutionary change within the transportation industry, with the greater cause of saving time, and to help make Canadian cities more accessible. The Pod was designed using a systematic approach with modularity and reliability as major foci. Its design featured an innovative, student researched and developed linear induction based MagDrive, and MagLev systems for propulsion and levitation. The braking system featured a fail-safe pneumatic deployment system to facilitate braking at high speeds as well as a wireless “Keep Alive” command. The onboard hyperionics is entirely composed of student researched and developed components which provides an expansive communication range and the ability to transmit real time data back to the mission control through all states and stages of the Pod’s run.

Synthesis and Balancing of Cam-Modulated Linkages

1987 ◽  
Author(s):  
P. Pracht ◽  
P. Minotti ◽  
M. Dahan
Keyword(s):  
Systematic Approach ◽  
Kinematic Chain ◽  
Path Generation ◽  
Industrial Manipulator ◽  
High Speeds ◽  
Structural Error ◽  
Mass Balancing ◽  
Four Bar Linkage ◽  
Robotic Applications ◽  
Class Of Functions

Abstract Linkages are inherently light, inexpensive, strong, adaptable to high speeds and have little friction. Moreover the class of functions suitable for linkage representation is large. For all these reasons numerous recent works deal with the problem of design mechanisms for robotic applications, but very often in terms of components such as gripper, transmission, balancing. We investigate a new application for linkages, using them to design industrial manipulator. The selected mechanism for this application is a four bar linkage with an adjustable lengh for exact path generation. This adjustment is performed by a track or cam which is substituted to a bar. By this mean, we define a cam-modulated linkage which possess superior accuracy potential and is capable of accomodating of industrial design restrictions. Such a kinematic chain is free from structural error for path generation and the presence of the track introduces the flexibility and versality in the usefull four bar chain. The synthesis technique of cam modulated linkage utilizes loop closure equations, envelop theory to find the centerline and the profile of the track. These techniques provide a systematic approach to the design of mechanism for path generation when extreme accuracy is required. In order to complete an contribution, we take in consideration the static balancing of the synthesized manipulator. To achieve static mass balancing we use the potential energy storage capabilities of linear springs, and integrated it with the non-linear motion of mechanism to provide an exact value of the desired counter loading functions. Examples are worked to demonstrate applications of these procedures and to illustrate the industrial potential of spring balancing and cam-modulated linkage.

scholarly journals Linear Induction Motors without Longitudinal Edge Effect

2019 ◽  
Vol 5 (2) ◽  
pp. 60-69 ◽  
Author(s):  
Vladimir A. Solomin ◽  
Andrei V. Solomin ◽  
Anastasia A. Chekhova ◽  
Larisa L. Zamchina ◽  
Nadezda A. Trubitsina
Keyword(s):  
Edge Effect ◽  
Induction Motors ◽  
Magnetic Levitation ◽  
Track Structure ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
High Speeds ◽  
Longitudinal Edge ◽  
Secondary Element ◽  
Linear Induction Motors

Background: At high speeds of motion of the magnetic-levitation transport (MLT), linear induction motors (LIM) have a secondary longitudinal edge effect (SLEE). SLEE occurs when magnetic field of inductor interacts with the currents of the secondary element (SE) outside the MLT crew. SLEE reduces the efficiency of traction LIM. Therefore, the task of reducing the influence of SLEE is relevant. Aim: Development and research of a linear induction motor without a secondary longitudinal edge effect. Methods: To achieve this aim, new designs of linear induction motors have been proposed, which do not have a SLEE. The secondary element of the LIM (track structure of the MLT) is made of cylindrical conductive rods installed with the possibility of rotation. Traction LIM of the MLT equipped with two brushes that close the rods of the SE within the length of the inductor. When the MLT crew moves, the rods outside the inductor are not closed by brushes and there is no current in them. There will be no SLEE. Another method to solve this problem is using reed switches to close and open the rods of the secondary element. Results: The possibility of increasing the efficiency of the LIM has been achieved.

Prototype of Distributed Electro-Hydraulic Braking System and its Fail-Safe Control Strategy

2013 ◽  
Author(s):  
Zhizhong Wang ◽  
Liangyao Yu ◽  
Yufeng Wang ◽  
Changxi You ◽  
Liangxu Ma ◽  
...  
Keyword(s):  
Control Strategy ◽  
Braking System ◽  
Safe Control ◽  
Fail Safe

High Speed Testing of the Hollow Roller Bearing

1981 ◽  
Vol 103 (1) ◽  
pp. 1-5 ◽  
Author(s):  
W. L. Bowen ◽  
T. W. Murphy
Keyword(s):  
High Speed ◽  
Roller Bearing ◽  
Test Machine ◽  
Bending Fatigue ◽  
Speed Test ◽  
High Speeds ◽  
Full Complement ◽  
Safe Condition ◽  
Fail Safe ◽  
Cooling Ability

This bearing with its preloaded, hollow rollers has the qualities required for high speed operation. Roller hollowness improves cooling ability and its lighter weight reduces the centrifugal force against the raceway. Preloading between inner and outer races for 360 deg insures good roller guidance and minimizes roller skidding. However, the problems of operating a full complement of rollers at very high speeds were unknown. Also, limitations caused by roller bending fatigue needed investigation. To answer these questions, a high speed test machine was constructed and a hollow roller test bearing was designed for operation at 3 million DN. This paper describes the construction of a high speed test cell and subsequent testing of a full complement, preloaded, 115 mm hollow roller bearing. Testing culminated in a successful endurance test of 1000 hours at 26,100 RPM (3 million DN). The results verified several advantages regarding roller stability and antiskidding qualities as well as demonstrating a unique fail-safe condition.

scholarly journals Sensorless Driving/Braking Control for Electric Vehicles

Actuators ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 22
Author(s):  
En-Ping Chen ◽  
Jiangfeng Cheng ◽  
Jia-Hung Tu ◽  
Chun-Liang Lin
Keyword(s):  
Electric Vehicles ◽  
Pulse Width Modulation ◽  
Functional Flexibility ◽  
Emergency Braking ◽  
Braking System ◽  
System A ◽  
High Speeds ◽  
Antilock Braking System ◽  
Braking Control ◽  
The Cost

A sensorless driving/braking control system for electric vehicles is explained in the present paper. In the proposed system, a field-oriented control (FOC) was used to integrate driving and braking controls in a unified module for reducing the cost of hardware and simultaneously incorporating functional flexibility. An antilock braking system can swiftly halt a vehicle during emergency braking. An electromagnetic reverse braking scheme that provided retarding torque to a running wheel was developed. The scheme could switch the state of the MOSFETs used in the system by alternating the duty cycle of pulse width modulation to adjust the braking current generated by the back electromotive force (EMF) of the motor. In addition, because the braking energy required for the electromagnetic braking scheme is related only to the back EMF, the vehicle operator can control the braking force and safely stop an electric vehicle at high speeds. The proposed integrated sensorless driving and electromagnetic braking system was verified experimentally.

Paper 6: Application of the Linear Induction Motor to High-Speed Transport

1966 ◽  
Vol 181 (7) ◽  
pp. 83-100 ◽  
Author(s):  
F. T. Barwell ◽  
E. R. Laithwaite
Keyword(s):  
Induction Motor ◽  
High Speed ◽  
Linear Motor ◽  
Linear Induction ◽  
Linear Induction Motor ◽  
Left Behind ◽  
High Speeds ◽  
High Acceleration ◽  
Air Resistance ◽  
Conventional Machine

High-speed ground transport (150 m/s) to be effective over limited distances also requires high acceleration. Were the power required to overcome air resistance and achieve adequate acceleration provided by conventional means, bulk and mass would be excessive. The linear induction motor offers considerable advantage at high speeds, it is not limited by centrifugal force and is independent of adhesion. A high overhead rating is possible as heat is left behind in the reaction rail. Output of a double-sided machine may be expected to reach 7 lb/in2 (44 500 N/m2) of effective pole face and the system is equally effective in braking. The principle of operation is described. To be efficient the current which is ‘in phase’ with the applied voltage must be made as large as possible compared with the magnetizing current, operation must be at low values of slip and the surface speed of the travelling field should be high. Thus a quantity known as the ‘goodness’ of a machine may be described by the expression where μ0 is permeability of free space; ρr is surface resistivity of rotor; p, pole pitch; g, total effective air gap in the magnetic circuit; and Vs is surface speed of travelling field = synchronous speed of vehicle. Because of the simplicity of the construction, g is necessarily larger than would be the case for a conventional machine and ρr is less favourable. However, these can be compensated for by increasing p with a suitable adjustment of frequency and the effect of the term Vs is such that the linear motor becomes better the higher the speed at which it is required to operate. Tests on a linear motor at Gorton are described and some of the mechanical problems of applying linear propulsion to railways are discussed.

Disassembly Planning and Timing Through a Petri Net Approach

2008 ◽  
Author(s):  
Han P. Bao ◽  
ChunHsi Lei
Keyword(s):  
Petri Net ◽  
Systematic Approach ◽  
Sustainable Manufacturing ◽  
Research Community ◽  
Time Data ◽  
Major Task ◽  
Disassembly Process ◽  
Disassembly Plan ◽  
Disassembly Planning

Disassembly planning and costing is a major task in the achievement of sustainable manufacturing. This paper presents a systematic approach to identify the feasible ways to disassemble a product then to select the most economical one using reliable time data gathered from experimental and practice-oriented sources. The disassembly process is modeled after the Petri Net approach, a technique that has proven to be fairly popular with the research community in the last few decades. The result of our systematic approach is a reliable derivation for a time-effective disassembly plan.

The Skid-Resisting Properties of Wet Surfaces at High Speeds: Exploratory Measurements with a Small Braking Force Trailer

1956 ◽  
Vol 60 (542) ◽  
pp. 83-94 ◽  
Author(s):  
C. G. Giles ◽  
F. T. W. Lander
Keyword(s):  
Braking System ◽  
High Speeds ◽  
Braking Force

The effectiveness of any braking system is ultimately limited by the point at which the wheels lock and slide over the surface on which the stop is being made. When surfaces are clean and dry the adhesion with a rubber tyre is high enough to meet most requirements of braking without risk of skidding. In wet, or in icy conditions, however, adhesion may be reduced to such an extent that, even with efficient brakes, stopping distances are greatly increased and dangerous conditions can arise. Under wet conditions there are special difficulties. Different surfaces may have very different skid-resisting properties and, in addition, when surfaces are wet, the adhesion with a tyre depends on speed, generally diminishing as speed is raised.

scholarly journals Investigations for broadband internet within high-speed trains

2005 ◽  
Vol 3 ◽  
pp. 247-252 ◽  
Author(s):  
I. Gaspard ◽  
G. Zimmermann
Keyword(s):  
High Speed ◽  
Systematic Approach ◽  
Internet Access ◽  
Long Distance ◽  
Multimedia Services ◽  
Broadband Internet ◽  
Channel Simulation ◽  
High Speeds ◽  
High Speed Trains ◽  
Terminal Equipment

Abstract. Broadband IP-based multimedia services are rapidly growing and there is the trend to use these services everywhere. Due to the fact that passengers in long distance high speed trains have a very comfortable environment to use their own terminal equipment, e.g. laptops with IEEE802.11×WLAN capability, it seems to be very promising to deliver broadband internet into trains. The challenge is the land-train connection where a high bit data rate link, e.g. 1Mbps in average in up- and downlink, has to be provided to enable several users within the train broadband internet access at the same time even at high speeds of the train. This paper describes a systematic approach starting at basic propagation measurements in a typical train environment and ending up with lab investigations by means of hardware channel simulation for different existing radio technologies which are candidates for the land-train connection.

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