The Nidec Corporation, a top manufacturer of small precision motors used
in devices such as hard disk drives and CD-ROM drives, entered the automotive
market with a mid-size motor for power steering in 2000. The tool that
facilitated their growth and success in a market the Nidec Corporation
had little experience or knowledge was JMAG, an electromagnetic field analysis
software from the JSOL Corporation. Less than 10 years have passed and
the Nidec Corporation has grown to hold roughly 10% of the market share.
Mr. Hitoshi Inoue, head of development for the Nidec Corporation, and Mr.
Nakaba Kataoka discuss the merits of implementing the JMAG system.
JMAG Supports Growth Entering New Markets
- Why did you decided to enter the market for power steering and what was
the current market situation?
Mr. Inoue There are three major types of power steering; "hydraulic systems"
which uses the engine's output, "hydraulic-electric systems"
where the motor output assists the hydraulic pressure, and " electric
systems" which use an electric motor. We decided to enter the market
with a motor for hydraulic-electric power steering in 1995. Our first product
was used in the "Peugeot 307" in August 2008. Amazingly this
vehicle earned the European "Car of the Year" award, increasing
our sales to provide us with a powerful foothold in the power steering
market.
Currently, we lead in hydraulic-electric type power steering and hold approximately
10% of the market share. Our power steering has been implemented in vehicles
from manufacturers such as Peugeot, Citroen, Ford, Nissan, and Renaud.
The power steering market, especially the electric types, is expected to
grow drastically in the field of automotive components. Only an electric
type motor can be implemented when the engine of hybrid automobiles stops
at idle and the demand for precise steering and fuel efficiency grows.
We are focusing all of our effort into the development of fully electric
motor prototypes as we expect the demand to increase.
- What were the reasons you decided to implement the JMAG system?
Mr. Inoue Entering the competitive ring for components mounted on vehicles with
a motor for power steering was quite challenging for us. We had experience
in designing continuously variable transmissions and reduction gears, but
we had never designed motors for power steering. As a vital safety device
that protects the lives of the driver and passengers, power steering needs
to be viable in severe climates from -40 to 120 degrees Celsius. The severity
of conditions for motors we where designing at the time was from -10 to
40 degrees Celsius. I mean, we had no idea what kind of characteristics
to expect from a motor at 120 degrees Celsius. The major factor to secure
when designing these types of components is reliability. Simulation and
analysis software was vital in supporting us throughout the design process.
Mr. Kataoka was asked to evaluate a variety of analysis software because we knew,
even at that time, it would be indispensable. Kataoka We had already been
using analysis software provided by a different company, but we needed
the tools specializing in design that JMAG offered to catch up and move
past rival manufactures. In 1996, we benchmarked analysis software from
4 different companies, but JMAG was the software that met the specifications
we desired in an analysis software.
First, the usability was fantastic. Next, the accuracy of the software
when comparing analysis results and the actual measurements obtained after
building a prototype were almost identical. The designers were able to
use this software practically, reducing the number of prototypes that need
to be made. We were confident that we could take on this new market using
JMAG because we could reduce the number of prototypes. JMAG was evaluated
so highly inside our company, that it was the only software we wanted to
implement.