Shock absorber, regenerative suspension, mechanical motion rectifier, rack and pinion etc. Energy harvesting and regeneration from the vibration of. Control of an automotive electromagnetic suspension system. Regenerative braking refers to a system in which the kinetic energy of the vehicle is stored temporarily, as an accumulative energy, during deceleration, and is reused as kinetic energy during acceleration or running. Explore electricity generating shock absorber with free download of seminar report and ppt in pdf and doc format. Electromagnetic regenerative suspension system for ground. Study of a semi active electromagnetic regenerative. Genshocktechnology is a fully active system for cars which will combine dynamics, safety, and comfort characteristics with minimum energy consumption. A passive suspension system has the ability to store energy via a spring and to dissipate it via a damper.
In recent years, electromagnetic suspension ems system has drawn worldwide attention. Section 3 the evaluation of the hprss system performance and damping characteristics is presented. A vehicle suspension system is a complex vibration system having multiple degrees of freedom. As a baseline vehicle a bmw 530i is used, for which a retro. We can also notice that the oscillation of active suspension system is less than passive system and settling time is also less. To design a control system for this actuator, a model. The manufacturing cost of the new system is estimated to be 40% lower. Suspension systems serve a dual purpose contributing to the vehicles road holdinghandling. Electromagnetic suspension system linkedin slideshare. Thus, this conventional passive suspension system usually designed is based on certain criteria of the vehicle which the suspension will be installed. Furthermore, already existing ideas for regenerative suspension systems using electromagnetic generators are explained and compared. The morryde independent suspension system allows for automotive style toe and camber wheel alignment. The regenerative energy suspension system gaurang tiwari, dr.
Therefore, its difficult to achieve good performance with a passive suspension system. Rubber bushings are commonly used in the inner ends of front control arms and rear control arms. Also, regenerative braking has caught the eye of major researchers in the last few decades and its most important application is the braking system on electric trains and vehicles. Above all, the amount of energy dissipation and the potential. Suspension systems serve a dual purpose contributing to the cars road holding handling and braking for good active safety and driving pleasure, and keeping vehicle occupants comfortable and reasonably well isolated from road noise, bumps, and vibrations, etc. The harvested electrical energy can be stored andor used to control the same vibration and provide ride comfort for the passengers. From regenerative suspension to electromagnetical suspension. Figure 1 shows the structural scheme of a semiactive. The system is controlled by active electronics which optimize damping, which the inventors claim also results in a smoother ride compared to a conventional suspension. Classification of suspension systems suspension system active hydraulic pneumatic electro magnetic passive foengineeringandtechnology jamiamilliaislamia 4 5. Design and experiment study of a semiactive energy. Review of methods for energy harvesting from a vehicle. Section 3 the evaluation of the hprss system performance and damping characteristics is. An energyregenerative suspension system request pdf.
Main advantage of electromagnetic regenerative shock absorber is that possible integration with active or semi active suspension system called electromagnetic suspension. The factor affecting the harness of this energy is elaborated. Other systems that are connected with the brake system include the parking brake, electronic control systems like the abs or the epd system, etc. On the contrary, electromagnetic regenerative suspension transforms the shock energy into electric energy that is more convenient to store and reuse, and has high performance, increased efficiency, less space requirements, and so on 10. Block diagram of mechanical regenerative system mechanical regenerative system consists of a rack and pinion assembly which will convert the linear motion of wheel to rotary motion. Electromagnetic suspension system prepared by bilal hasan syed 6th semester b.
Struts, mounts and springs, control arms and ball joints, just to name a few. The hybrid system combines this energy regenerative system and active control in order to achieve good performance of vibrations reduction with little energy consumption. Information is provided on the fundamentals and inspection procedures for wheeled vehicle steering systems. Audi regenerative shock absorber recaptures energy stephen edelstein august 15, 2016 comment now. The typical brake system consists of disk brakes in front and either disk or drum brakes in the rear connected by a system of tubes and hoses that link the brake at each wheel to the master cylinder. The main drawback of the regenerative braking principle is that it is not a continuous energy recovery system. In a vehicle, it reduces the effect of travelling over rough ground, leading to improved ride. A typical regenerative suspension system is as shown in fig1. Then, the novel active system was modeled and simulated to show the performance improvement in ride comfort in its electrical motor mode. Simulation of a regenerative electromagnetic vehicle. There are a variety of components that make up the suspension system. In reality, many world war ii tanks, and mainly postwar tanks, implemented one or another variety of regenerative steering which made them lose significantly less speed when turning. Another system has been developed by a team at new york state university. Always adjust the camber first, followed by the toe.
Regardless voltage condition, the new dcdc converter. Important factors that affect the shockabsorbing and regenerative characteristics of the suspension system are studied. Enormous energy regeneration potential of the suspended driven motor is excavated. Simulation of a regenerative electromagnetic vehicle suspension by fabio tarantini a thesis submitted to the faculty of graduate studies through the department of mechanical, automotive and materials engineering in partial fulfillment of the requirements for the degree of master of applied science at the university of windsor. Energy harvesting and control of a regenerative suspension. An energy regenerative vehicle suspension system development, optimization, and improvement by bo huang m. An alternative regenerative braking system is being developed by the ford motor company and the eaton corporation. Wiring of whole system through which electricity is being.
International automotive supplier continental is basing its new cps series chassis height sensor on the as5162, a magnetic position sensor from specialist manufacturer ams. Suspension system wear can upset the operation of the steering system and change wheel alignment angles. Suspension system functions to isolate the vehicle from disturbances so that the driver can keep control of the vehicle, without causing discomfort to passengers system should minimize vertical motion, as well as pitch and roll movements, as the vehicle passes over an irregular road, performs turning. Two short videos that show regenerative suspension system on the intertronic gresser patent page, there are two short videos, and more information about their regenerative suspension system. The shock absorbers duty is to absorb or dissipate energy.
The pressure in the air bellows, depending on the load the vehicle carries, is ideal for use in controlling automatic loadsensitive braking. Performance evaluation and damping characteristics of hydro. A suspension system or shock absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. Proper service and maintenance of these components greatly increase roadability, reliability, and vehicle life. The nice people at intertronic gresser have taken the shock absorbing energy regeneration concept and improved it into a full suspension energy regeneration system. This allows you to manage your rvs tire wear as effectively as you manage your tow vehicle. Air suspension bellows are used as elastic constructional elements. Figure 3 the independent suspension system front view over the years, many types of independent suspension system have been tried to develop such as macpherson, double wishbone, multilink, trailing arm and swing axle. Four wheel drive on which suspension system is assembled. The regenerative suspensions have attracted much attention in recent years for the improvement of vibration attenuating performance as well as the reduction of energy dissipation. The wheeled vehicle steering systems subcourse, part of the light wheel vehicle mechanic mos 63b skill level 3 course, is designed to teach the knowledge necessary to develop the skills for servicing and maintaining steering systems. Constructing control system for active suspension system. Design evaluation of a two wheeler suspension system for. According to running test results, the new system has damping performance equal to or over that of the conventional system.
Although there have been several regenerative shock absorber developments over the past decade, including lineartubular electric motors and hydraulic actuator based systems, cost and. Along with suspension parts, many other pieces of the car affect the suspension system, such as the tires. For a suspension system the goal of ride comfort conflicts with the restriction of staying within the limits of suspension travel, or rattle space the distance between the car body and the tyre which is restricted to the suspension travel limit. This project helped us to know the periodic steps in completing a project work. When the vehicle travels on rough road, it will operate the regenerative system and harvest the kinetic energy from the suspension vibration and convert to. Review on energy regenerative suspension systems for vehicles. Regenerative shock absorber in the vehicle suspension system. Multiobjective optimisation of active and semiactive. Energy harvesting, bi directional switch mode rectifier, direct acdc converter, regenerative skyhook control, regenerative suspension system. I will do this a bit differently considering what is this forum like, and begin with a very quick summary of what this is about in simple words that anyone can understand, so, tl. Regenerative suspension system hprss, it is organized as follows.
These are then compared using a fitness function as a measure. Also explore the seminar topics paper on electricity generating shock absorber with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production. A regenerative suspension system is introduced in the vibration exciter assembly to attenuate or eliminate the energy generated by the excitation. Us20060016629a1 us11183,472 us18347205a us2006016629a1 us 20060016629 a1 us20060016629 a1 us 20060016629a1 us 18347205 a us18347205 a us 18347205a us 2006016629 a1 us2006016629 a1 us 2006016629a1 authority us united states prior art keywords vehicle excess electrical capacity electrical suspension system prior art date 2004. Steering system and suspension design for 2005 formula saea. How to diagnose problems with your suspension system. The purpose of the suspension system is to isolate the vehicle body from the road inputs. Since these two elements cannot add energy to the system this is called as a passive suspension system. Introduction the suspension systems are used in vehicle to support weight of vehicle body and to isolate the vehicle chassis from road disturbances.
However, in a passive suspension system with a soft spring, movements will be high, while using hard springs causes hard moves due to road roughness 1218. Active automotive suspension systems have been under development for a number of years with recent introductions of various versions. This paper considers an electromagnetic regenerative suspension system erss that recovers the kinetic energy originated from vehicle vibration. First fully regenerative active suspension system by zf. This project regenerative suspension system is designed with the hope that it is very much economical and help full to all vehicles to produce the compressed air. Conventional shock absorbers simply dissipate this energy as heat when used in an electric vehicle or hybrid electric vehicle the electricity generated by the shock absorber can be diverted to its powertrain to increase battery. The obtained results indicated that, for the hydropneumatic suspension system, the values of dlc at 3rd axle of vehicle are reduced by 388.
Unlike traditional suspension systems which suppress the vibrations by dissipating the vibration energy into waste heat, the regenerative suspension with energy harvesting shock absorbers can convert the traditionally wasted energy into electricity. A suspension system can be considered active when an outside power source is used to alter its characteristics, and these systems can be placed into one of three 3 different categories. The regenerative suspension systems have attracted much attention in recent years for the improvement of vibrating attenuating performance and reduction of energy dissipation. Above all, the amount of energy dissipation and the potential of energy. The regenerative suspension system functions by reciprocating part of the system. Proceedings of the world congress on engineering 20 vol iii, wce 20, july 3 5, 20. They can be connected to just about any type of suspension system listed on this page. The energy dissipated by the suspension system is harvested by supercapacitors. An electric motor which converts the magnetic effect into electricity.
Its parameters are generally fixed, being chosen to achieve a certain level of compromise between road holding, load carrying and comfort. Regenerative active suspension system with residual energy for in. Abstractthe amount of energy dissipated in the suspension system has brought several studies to harness the energy that was considered to be a waste previously. The net power control of hydraulicelectricity energy. Regenerative braking is a small, yet very important, step toward our eventual independence from fossil fuels. There are four bolts per wheel, which allow for these adjustments. This allows them to be removed, twisted round a few splines and reinserted, which can be used to raise or lower a car, or to compensate for the natural sag of a suspension system over time. A highefficiency regenerative shock absorber considering twin ball. The semiactive energy regenerative suspension system proposed in this paper is composed of a spring, an energy regenerative damper, an energy regenerative circuit and an energy storage element.
Suspension systems which is a main part of assembly. And methods the suspension system of the wheeled vehicle equipped with thehighvoltage power storage unit includes following components figure 1. Although there have been several regenerative shock absorber developments over the past decade, including lineartubular electric motors and hydraulic actuator based systems, cost and complexity have delayed large scale deployment in series production. An active suspension system has the ability to store, dissipate and to introduce energy to the system. The system has inherent advantages over steel springs. Air suspension system seminar report,pdf,ppt,doc,topics. Abstract regenerative shock absorber is a type of suspension system that converts parasitic intermittent linear motion and vibration into useful. Renewable energy technologies, particularly in electric vehicles evs. Pdf fabrication and testing of electromagnetic energy. Conclusion as electromagnetic shock absorbers can be able to deliver almost continuous energy it can be used as a source of energy regenerative system it can be installed in the vehicles with less modification in the conventional suspension systems the amount of energy regenerated depends on the velocity of vehicle, roughness of the surfaces etc. Index termsvehicle suspension, energy regeneration, electromagnetic. Development of mechanism for recovery of lost energy of. It is concluded that a suspension system using an electromagnetic generator coupled with a magnetorheological mr damper is the most optimal when looking at e ciency, cost, robustness and environmental impact.
Electricity generating shock absorber seminar report. Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. Sep 03, 20 first fully regenerative active suspension system by zf first fully regenerative active suspension system by zf. Suspension system nonlinear asymmetrical shock absorber. Pdf energy harvesting from suspension systems using. Research article design and static magnetic analysis of. Compared with the passive suspension system, the rms value for vehicle body acceleration is reduced by mor e than 31%, and energy consumption is. With hpa, when the driver steps on the brake, the vehicles kinetic energy is used to power a reversible pump, which sends hydraulic fluid from a low pressure accumulator a kind of storage tank inside the vehicle into. With regenerative braking technology reaching maturity, manufacturers are studying other forms of energy regeneration, amongst these.
Hydropnumatic suspension it is a type of automotive suspension system, invented by citroen the purpose of this system is to provide a soft, comfortable, yet wellcontrolled ride quality. Steering system and suspension design for 2005 formula saea racer car a dissertation submitted by cristina elena popa in fulfilment of the requirements of courses eng4111 and 4112 research project towards the degree of bachelor of engineering mechanical submitted. The basic part of a passive suspension system is a damper and a coil spring. A novel energyregenerative active suspension for vehicles. The ces system is triggered by a powerful electronic control unit ecu. The stability of the steering system and the transfer of the braking forces are improved since all wheels always have good adhesion to the road surface. This system belt or camshaft driven pump from the engine to pressurize a special hydraulic fluid. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. This paper considers an electromagnetic regenerative suspension system erss that recovers the kinetic energy originated from vehicle vibration, which is previously dissipated in traditional shock absorbers. The conventional vehicle suspension dissipates the mechanical vibration energy in the form of heat which waste considerable energy. Energy generation by suspension system ravindra bhoite1, somanath jadhav2, akshay jape3, vikram phadatare4, amardip jadhav5 1, 2,3,4,5department of mechanical engineering, sietc, paniv, maharashtra, india. The net power control of hydraulicelectricity energy regenerative suspension. Regenerative braking is commonly used in hybrids and electric cars to recover energy normally lost. A regenerative active suspension system, sae technical paper series, 910659 1991 1295.
Us20060016629a1 us11183,472 us18347205a us2006016629a1 us 20060016629 a1 us20060016629 a1 us 20060016629a1 us 18347205 a us18347205 a us 18347205a us 2006016629 a1 us2006016629 a1 us 2006016629a1 authority us united states prior art keywords vehicle excess electrical capacity electrical suspension system prior art date 20040723 legal status the legal status is an assumption and is not a. It can also be used as a controllable damper that can improve the vehicles ride and handling performance. Active suspension system for passenger vehicle using active. The job of a car suspension is to maximize the friction between the tires and the road surface, to provide steering stability with good handling and to ensure the comfort of the passengers. A regenerative shock absorber is a type of shock absorber that converts parasitic intermittent linear motion and vibration into useful energy, such as electricity. Section 2 describes the general setup and working principle for the hydropneumatic suspension system and the effect of the hydraulic rectifier. Design and testing of regenerative suspension system. The energy storage element is just used for storing energy instead of powering the linear motor. Integral to the performance of any active suspension system are the sensors that monitor critical functions for processing by the control unit. Ohlins racing, ces is a semiactive suspension system that continuously adjusts damping levels according to road conditions and vehicle dynamics, such as speed, turning and cornering, delivering comfort without sacrificing the safety of sure handling. First fully regenerative active suspension system by zf first fully regenerative active suspension system by zf. Article pdf available december 2015 with 694 reads. Hydraulic system is most expensive as it requires number of additional components for successful operation like turbine, hose pipes, flow meter etc.
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