Kubota Corporation

Shigenori Kimura

Yasuhiro Yamamoto

Jiro Kuramoto

Gonshiro Kawabata

Naoaki Sato

Masahiro Ichihara

An emergency braking system for a vehicle driven by an electric motor. The vehicle includes a manually operable accelerator lever, a displacement detector for detecting displacement of the accelerator lever, an emergency detector disposed in a region of the accelerator lever for detecting an operating force applied to the accelerator lever, a braking device, and a control unit for receiving detection signals from the displacement detector and emergency detector, and outputting control signals to the electric motor and braking device. The control unit outputs the control signal to the braking device to brake the vehicle when the operating force detected by the emergency detector exceeds a predetermined value. In addition or as alternative to the emergency detector, the vehicle may include an emergency detector disposed in a driver's foot rest region for detecting a treading force of the driver.

Braking control system for a vehicle driven by an electric motor

An electric vehicle that runs at a speed controlled by adjusting power supply to an electric motor in response to a speed setting signal from a speed setting device including an accelerator lever and a change speed lever. This vehicle comprises a first control unit for producing a target speed value based on the speed setting signal, a second control unit for controlling the electric motor, and a rotary encoder for detecting an actual vehicle speed from rotation of the electric motor and feeding the vehicle speed back to the first and second control units. The first control unit compares the target speed value and actual vehicle speed and, when a difference therebetween exceeds a predetermined value, varies the target speed value for application to the second control unit. The second control unit compares the target speed value and actual vehicle speed and determines an amount of power supply to the electric motor.

Growing community of inventors

Sakai, Japan

Shigenori Kimura