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Parking assist systems which relieve burden of drivers have been put into practice in the world. Mitsubishi Electric has also been developing several technologies to realize the system, where our products such as sonar (ultrasonic sensor), electric power steering (EPS), a motor, and an inverter are used. In the parking assist system, peripheral environment of the vehicle in a parking lot is detected with our sonar sensors and determine whether or not there is a parking space available. Estimation of the position and the attitude of the vehicle is also carried out. On the basis of the detection and the estimation, a smooth and efficient path to drive and park the vehicle is generated with an optimization technique. In particular, this paper focuses on a drive control for electrified vehicles to track the reference trajectory at a desired speed given from the assist system.

We have many traffic accidents and related fatalities every year and safety issue is focused very much as well as environmental issue. As for frontal collision, some products of Adaptive Cruise Control (ACC) System and headway distance warning system have been developed and introduced to the market in Japan, U.S, and Europe. In the other hand, the systems to reduce side and rear collision, for example, which assist driver's maneuvers in lane change situation at high speed, are under development. And efforts to make restraint systems such as airbag and seat belt more effective is also needed in order to increase passive safety and reduce related fatalities, for example, smart airbag using additional sensors. Corresponding to these situations, we made a plan to develop short-range radars for these automotive applications, Blind Spot Detection System (BSD), Parking Aid System (PA), and Pre-crash Detection System (PC).

This paper relates to a distance detecting sensor, specifically a scan radar laser used for a vehicle distance warning system or an intelligent cruise control system. In developing the scan laser radar, we used a light-based scan-action system working via an electromagnetic actuator and ICs in place of the internal circuitry for substantial parts count reduction. The compact scan laser radar is smaller in size and lower in price with higher performance than its predecessors (1). This has made it possible to offer a lower-priced, compact, lightweight, and easy-to-install scan laser radar.

The satellite ‘HALCA’ was launched in February 1997 by the Institute of Space and Astronautical Science (ISAS), Japan. HALCA is a scientific satellite with a large deployable antenna to make experiments on space VLBI. The deployable antenna, developed under the requirements of large aperture area and accurate reflector surface, is formed of complicated structures and lots of mechanisms. Though heat exchange in the antenna was complicated and difficult to evaluate, antenna thermal performance in orbit was within expectations and all mechanisms were adequately controlled until the antenna deployment. This paper describes thermal control design of the large deployable antenna, thermal design verification in the thermal balance test, and evaluation of performance in orbit.

Currently, safety and environmental issues are a major concern in the automotive industry. ABS has become the vital brake system, supporting one of the fundamental functions of automotive (running, turning, and stopping). Automobile manufacturers are moving towards standardized installation of this system as a safety/prevention measure. The system itself is using more advanced technology and increasing performance, such as a separate braking feature on individual wheels. Other new features include the BA (brake assisting) System and the Stability Control System. Accordingly, a high level of technology and performance is required for MCUs themselves.