Motomiya Y.,Hitachi Ltd. |
Matsuoka A.,Rail Systems Company |
Yukinobu A.,Mechanical Engineering Research Center
Hitachi Review | Year: 2013
OVERVIEW: The Gran Class is the first new grade of passenger car to be introduced since the Shinkansen began operating. Its design needed to provide not only a luxurious interior, but also an extraordinary experience that would justify the additional cost of a premium seat. Hitachi had collaborated with the East Japan Railway Company to develop the design of the new Gran Class passenger car for the E5 "Hayabusa" used on the Tohoku Shinkansen. The aim was to provide an unprecedented travel experience. The initial design work involved visualizing how passengers would use the car. This was followed by the formulation of scenarios covering different travel experiences that were then used to determine passengers' latent requirements and subjective values. The final step was to develop the style of service and interior that would satisfy the requirements identified from the scenarios. In producing this design for an unprecedented premium passenger car, Hitachi found that it needed to trial a variety of different methodologies and to utilize manufacturing techniques with a high degree of craftsmanship.
Nakatsu K.,MOTOR Information Systems |
Suzuki H.,Electronic Control Systems |
Nishihara A.,Mechanical Engineering Research Center |
Sasaki K.,Mechanical Engineering Research Center
Hitachi Review | Year: 2012
OVERVIEW: Realizing a sustainable society will require a reduction in CO2 emissions, and energy efficiency is being urged on many different sectors of the economy, including the electric power business, industry, and consumer and transportation businesses. In the transportation sector, in particular, environmentally conscious vehicles that use power electronics will be essential as replacements for conventional vehicles powered by internal combustion engines. The main components used in power electronics include inverters, batteries, and electric motors, and Hitachi is working on the development of specific technologies intended to make these components even smaller and more efficient than before. © Hitachi, Ltd. 1994, 2012.
Yasuda T.,Development Center |
Kamei T.,Hitachi Ltd. |
Fujishita M.,Global Development Systems |
Umekita K.,Mechanical Engineering Research Center
Hitachi Review | Year: 2011
Overview: Hitachi develops transport systems ("green mobility") that reduce the burden on the environment. In the field of construction machinery, it has developed highly efficient dump trucks for the mining industry through measures that include using lighter body structure and adopting electric drive. To encourage the wider adoption of railway systems which emit less CO2 per unit of load carried, Hitachi has also used computational fluid dynamics to develop and deploy environmentally conscious technologies that minimize noise and pressure fluctuations as well as maintenance technologies essential for reliable rail transport. For automotive systems, Hitachi has developed direct injection systems to improve the efficiency of vehicles powered by internal combustion engines, and electrodynamic brakes and other components to improve the efficiency of hybrid and electric vehicles. Through the development of green mobility, Hitachi is responding to the growing need to conserve energy throughout society which has been highlighted by the aftereffects of the recent earthquake in eastern Japan.
Funabashi S.,Energy and Environment Research Center |
Iwase T.,Mechanical Engineering Research Center |
Hiradate K.,Mechanical Engineering Research Center |
Fukaya M.,Mechanical Engineering Research Center
Hitachi Review | Year: 2012
OVERVIEW: Pumps, fans, and other fluid devices are used in a wide range of system products, from power plants and industrial machinery to home appliances. Although CFD has been used in the design of these devices for some time, growing demands to reduce the load on the environment, to improve reliability and other aspects of product performance, and to cut costs are driving the need for analyses that cover a broad scope and achieve a high level of accuracy. On its own and through collaborations between industry and academia, Hitachi is responding to this need by working on large-scale analyses using fluid dynamics to study phenomena that could not previously be tackled. Hitachi is also applying techniques such as multi-objective design optimization in situations where trade-offs exist between different objectives, and special cavitation analysis techniques. © Hitachi, Ltd. 1994, 2012.
Gitifar V.,Shiraz University |
Eslamloueyan R.,Shiraz University |
Sarshar M.,Mechanical Engineering Research Center
Bioresource Technology | Year: 2013
In this study, pretreatment of sugarcane bagasse and subsequent enzymatic hydrolysis is investigated using two categories of pretreatment methods: dilute acid (DA) pretreatment and combined DA-ozonolysis (DAO) method. Both methods are accomplished at different solid ratios, sulfuric acid concentrations, autoclave residence times, bagasse moisture content, and ozonolysis time. The results show that the DAO pretreatment can significantly increase the production of glucose compared to DA method. Applying k-fold cross validation method, two optimal artificial neural networks (ANNs) are trained for estimations of glucose concentrations for DA and DAO pretreatment methods. Comparing the modeling results with experimental data indicates that the proposed ANNs have good estimation abilities. © 2013 Elsevier Ltd.
News Article | November 17, 2016
“Accuracy wins” is the mantra at GoX Studio, where a small group of engineers has accomplished what was previously impossible. After two years of development and testing under the supervision of U.S. Army scientists, GoX Studio has developed an algorithm that’s on average 11.7 times more accurate than leading consumer fitness trackers. So accurate, in fact, that GoX Studio’s simple consumer app nearly matches results from a Cosmed VO2 mask test: the clinical standard for measuring metabolism and calories burned when attached to a $10,000 machine. “We’re providing lab-accurate results without the lab," said GoX Studio CEO and Co-Founder Joe Hitt. “We’ve discovered the science that will drive the next generation of fitness trackers. Our mission is to cure complaints about tracking accuracy.” Accuracy has emerged as a sore spot for fitness trackers. Numerous companies have faced class-action lawsuits over accuracy concerns and a recent 2016 “The State of Wearables Today” Survey (conducted Valencell and MEMS & Sensor Industry Group) found accuracy ranked as the most important feature of a fitness wearable (63%). Lack of accuracy also ranked as the second highest reason consumers stopped wearing their product (29%). GoX Studio’s patent-pending algorithm was developed over two years in partnership with the U.S. government. Fortunately for consumers, this partnership provides a provision that allows GoX Studio to use or license the technology commercially in apps or products. “The military is interested in developing this technology to maximize the performance of our soldiers,” said Hitt, a retired Army lieutenant colonel who once served as the director of both the Aerospace Systems and Thermodynamics Group and the Mechanical Engineering Research Center at the United States Military Academy before starting GoX Studio. “I also want to see it get on the wrists and feet of consumers. Accuracy helps everyone make more informed health decisions.” GoX Studio plans to first pursue licensing strategies for their algorithm to find companies that want to improve the accuracy of their devices. “We’ve looked at all the leading company’s devices,” says Dr. Bruce Floersheim, Chief Operations Officer and Co-founder of GoX Studio. “We can literally give any one of them a seven to fifteen-fold boost in accuracy in a matter of days.” If GoX Studio is unable to find a suitable licensing partner or partners, they plan to raise venture capital to bring all their products to market. GoX Studio is putting the finishing touches on a downloadable consumer app that works with any consumer heart-rate monitor. And they have working prototypes for a patented insole that Army-testing confirms provides accuracy within 95% of a clinical VO2 test. GoX Studio’s insole is also the first fitness tracker that measures propulsive power and metabolic efficiency, two metrics which can greatly improve the performance of runners and prevent injury. Testing of GoX Studio’s technology occurred under the supervision of U.S. Army Scientists in all kinds of conditions including different loads and at different temperatures. Testing involved twenty military veterans and fifteen recreational athletes. The tests were evenly split across men and women ranging in age from 18 to 60. Over 200 tests found GoX Studio’s algorithm provides accuracy within 95% of a clinical VO2 mask test. Further testing across five subjects revealed that GoX Studio was 7.6 times more accurate than the Apple Watch for calories burned, 12.3 times more accurate than a Fitbit Surge, and 15.1 times more accurate than the Garmin Fenix 3. Multiple consumer and university tests including results published in the peer-review American Medical Association's journal of internal medicine have already confirmed that current consumer devices have yet to approach the accuracy of a clinical VO2 test — results that GoX Studio is nearly achieving. “Even though we’re within 5% accuracy of the clinical standard, we’re developing further enhancements that learn and customize the algorithm to evolve with a person’s individual fitness level," says Joe Hitt. "Soon, we may even be able to match the accuracy of a $10,000 machine.” According to Parks Associates, the fitness tracker industry is set to almost triple from one valued at $2 billion in 2014, to $5.4 billion by 2019. For more information, consumers and licensing partners should visit GoXStudio.com In the attached diagram, the product that matches the clinical VO2 mask test for calories burned is the most accurate. Notice how GoX Studio nearly matches a clinical mask test for calories burned. About GoX Studio At GoX Studio, accuracy wins. We discover technology that drives the next generation of fitness tracking devices. Our technology has broad uses to improve the performance and health of recreational and professional athletes, the elderly, and even soldiers and rescue workers in the field. GoX Studio was co-founded by Joe Hitt and Bruce Floersheim, two service-disabled Army officers who went on to teach at the U.S. Military Academy and become recognized experts in the field of wearable robotics.
Tanaka H.,Hitachi Ltd. |
Kamiya Y.,Hitachi Ltd. |
Takano M.,Hitachi Ltd. |
Nozaki T.,Mechanical Engineering Research Center
Hitachi Review | Year: 2011
OVERVIEW: Hitachi's long history in the field of air compressors reached 100 years in 2011 financial year. Over this time Hitachi has undertaken ongoing research and development and drawn on a wide range of technologies to meet customer needs. Along with a growing awareness of environmental problems, recent years have also seen demand from around the world for higher efficiency and larger energy savings from air compressors which consume a significant proportion of the electric power used in factories. To meet these needs in the coming 100 years, Hitachi intends to expand its air compressor business globally and operate it more speedily.
Ishii A.,Hitachi Ltd. |
Ogura H.,Hitachi Ltd. |
Ishimoto H.,Hitachi Ltd. |
Mizuoch M.,Mechanical Engineering Research Center
Hitachi Review | Year: 2013
Overview: With robotics being increasingly adopted in a variety of products, such as cars and home appliances, Hitachi Construction Machinery Co., Ltd. is proceeding with greater use of robotics in construction machinery, its major objectives being to expand the scope of its application and to enhance the underlying competitiveness of the company's products. Hitachi Construction Machinery is developing robotics for construction machinery with a focus on three technologies: (1) operator assistance whereby the intelligence and control functions of a construction machine are used to assist its operator, (2) H/Is that provide smooth interaction between human and machine, and (3) improvements to the body functions of construction machines, including the front and crawler mechanisms. Hitachi Construction Machinery is also working on the fusion with external information networks, this being another important factor in introducing robotics to construction machinery.
Minami H.,Hitachi High-Technologies |
Mori J.,Hitachi High-Technologies |
Iwai S.,Hitachi High-Technologies |
Moriya H.,Hitachi High-Technologies |
Watanabe N.,Mechanical Engineering Research Center
Hitachi Review | Year: 2011
OVERVIEW: The range of applications for large LCDs is expanding from PCs to TVs and the international adoption of LCDs is being accelerated by the shift from analog to digital broadcasting and by their use as a replacement for CRTs. It is anticipated that the trend to larger LCD sizes for TVs will continue to be driven by innovations such as the adoption of LED backlights and 3D TV. Leading production lines already use very large mother glass substrates in the 9-m2 range to achieve efficient production of LCDs at low-cost. As a leader in the field of tenth generation LCDs, Hitachi High-Technologies Corporation develops production, inspection, and other technologies and supplies a wide range of manufacturing equipment for LCDs capable of handling large glass sizes.
Iwasaki T.,Mechanical Engineering Research Center |
Takahashi S.,Materials Research Center
Hitachi Review | Year: 2012
OVERVIEW: With the aim of realizing a sustainable society, Hitachi has formulated an Environmental Vision directed toward overcoming the challenges facing the global environment, and based on the three pillars of Prevention of Global Warming, Conservation of Resources, and Preservation of Ecosystems. Applying this initiative in the field of material development, Hitachi is developing simulation technology that works from first principles at the level of electrons and atoms to provide comprehensive predictions of chemical properties, such as reactions involving the formation and breaking of chemical bonds; physical properties, such as optical electromagnetic, and diffusion characteristics; and mechanical properties, such as breaking strength and deformation characteristics. Through the application of this technology, Hitachi is working on material designs for the three pillars of its Environmental Vision. In the future, Hitachi intends to utilize this technology for the efficient design of a wide range of different environmentally conscious high functional materials that will enhance the products it develops. © Hitachi, Ltd. 1994, 2012.