摘要:
Provided is an overturn preventing device for a dump vehicle equipped with a body (3) and hoist cylinders (5). The dump vehicle overturn preventing device comprises: a loaded weight estimation unit (32) which estimates loaded weight on the body; a vehicle rotation moment calculation unit (33) which calculates a vehicle rotation moment Mb caused by movement of the dump vehicle's load upon discharging of the load; a reference moment calculation unit (34) which determines a reference moment Ms not greater than an overturn threshold moment MI which is the minimum value of a rotation moment required to lift the front wheels (1) off the ground; a judgment unit (35) which judges whether or not the vehicle rotation moment Mb has exceeded the reference moment Ms; and a display device (37) which notifies the driver that there is a probability of an overturn of the vehicle when the vehicle rotation moment Mb is judged to have exceeded the reference moment Ms. The device thus prevents overturning of the vehicle caused by the load sliding down from the body in a lump.
摘要:
Disclosed herein is a shoulder collapse risk monitoring system capable of alerting a driver to a risk of a road shoulder collapse during approach operations to the shoulder.The system includes: a shoulder shape measuring device 101 that measures a shape and slope angle of a road shoulder around a vehicle; a measurement position identification section 121 that identifies a wheel position relative to the shoulder when the shape and slope angle of the shoulder are measured by the shoulder shape measuring device; a shoulder strength calculating section 122 that calculates, from the shape and slope angle of the shoulder measured by the shoulder shape measuring device, strength of the shoulder at the wheel position identified by the measurement position identification section; a wheel load measuring section 123 that measures a wheel load of the wheel whose position has been identified by the measurement position identification section; and an alert device 105 that presents information on a risk of a collapse of the shoulder at the identified wheel position by comparing the wheel load measured by the wheel load measuring section, with the shoulder strength calculated by the shoulder strength calculating section.
摘要:
Changes in the number of passengers or in load cause significant changes in vehicle weight, thus making it impossible to appropriately suppress a pitching motion of a vehicle chassis, hence rendering a necessary driving torque difficult to ensure, resulting in a decrease in drivability being insuppressible. An electric vehicle with a drive including a motor and a controller comprises a pitching quantity detector that detects a magnitude of a pitching motion of the vehicle, a vehicle weight determination unit that determines weight of the vehicle, a torque correction calculator that uses a traveling state of the vehicle and the determined vehicle weight to change a driving torque output from the drive, and a control gain varying element that adjusts a control gain of the torque correction calculator according to a magnitude of the vehicle weight value output from the vehicle weight determination unit.
摘要:
Provided is an overturn preventing device for a dump vehicle equipped with a body (3) and hoist cylinders (5). The dump vehicle overturn preventing device comprises: a loaded weight estimation unit (32) which estimates loaded weight on the body; a vehicle rotation moment calculation unit (33) which calculates a vehicle rotation moment Mb caused by movement of the dump vehicle's load upon discharging of the load; a reference moment calculation unit (34) which determines a reference moment Ms not greater than an overturn threshold moment MI which is the minimum value of a rotation moment required to lift the front wheels (1) off the ground; a judgment unit (35) which judges whether or not the vehicle rotation moment Mb has exceeded the reference moment Ms; and a display device (37) which notifies the driver that there is a probability of an overturn of the vehicle when the vehicle rotation moment Mb is judged to have exceeded the reference moment Ms. The device thus prevents overturning of the vehicle caused by the load sliding down from the body in a lump.
摘要:
Changes in the number of passengers or in load cause significant changes in vehicle weight, thus making it impossible to appropriately suppress a pitching motion of a vehicle chassis, hence rendering a necessary driving torque difficult to ensure, resulting in a decrease in drivability being insuppressible. An electric vehicle with a drive including a motor and a controller comprises a pitching quantity detector that detects a magnitude of a pitching motion of the vehicle, a vehicle weight determination unit that determines weight of the vehicle, a torque correction calculator that uses a traveling state of the vehicle and the determined vehicle weight to change a driving torque output from the drive, and a control gain varying element that adjusts a control gain of the torque correction calculator according to a magnitude of the vehicle weight value output from the vehicle weight determination unit.
摘要:
Disclosed herein is a shoulder collapse risk monitoring system capable of alerting a driver to a risk of a road shoulder collapse during approach operations to the shoulder.The system includes: a shoulder shape measuring device 101 that measures a shape and slope angle of a road shoulder around a vehicle; a measurement position identification section 121 that identifies a wheel position relative to the shoulder when the shape and slope angle of the shoulder are measured by the shoulder shape measuring device; a shoulder strength calculating section 122 that calculates, from the shape and slope angle of the shoulder measured by the shoulder shape measuring device, strength of the shoulder at the wheel position identified by the measurement position identification section; a wheel load measuring section 123 that measures a wheel load of the wheel whose position has been identified by the measurement position identification section; and an alert device 105 that presents information on a risk of a collapse of the shoulder at the identified wheel position by comparing the wheel load measured by the wheel load measuring section, with the shoulder strength calculated by the shoulder strength calculating section.
摘要:
An electric vehicle includes a pitching state quantity detector for detecting quantity of a pitching-motion of the vehicle, a vehicle weight determiner, a pitching target quantity calculator for calculating a target quantity of a pitching motion at least from the determined vehicle weight, and a torque correction calculator for increasing/reducing a driving torque output, according to a particular differential between the detected pitching-motion state quantity and the calculated target quantity.
摘要:
An electric vehicle includes a pitching state quantity detector for detecting quantity of a pitching-motion of the vehicle, a vehicle weight determiner, a pitching target quantity calculator for calculating a target quantity of a pitching motion at least from the determined vehicle weight, and a torque correction calculator for increasing/reducing a driving torque output, according to a particular differential between the detected pitching-motion state quantity and the calculated target quantity.
摘要:
To reduce tire wear, a turning motion assistance device for an electric vehicle is provided which includes a target wheel slip angle calculating unit for calculating a target wheel slip angle from the steering angle, a vehicle state quantity detector for detecting vehicle state quantities, an actual vehicle-body slip angle calculating unit for calculating an actual vehicle-body slip angle from the vehicle state quantities, an actual wheel slip angle calculating unit for calculating an actual wheel slip angle from the actual vehicle-body slip angle and the steering angle, a yawing moment requirement calculating unit for calculating a yawing moment requirement from a difference between the target wheel slip angle and the actual wheel slip angle, and a torque correction data calculating unit for calculating an amount of torque correction for generating the yawing moment required.
摘要:
Disclosed herein is a turning motion assistance device for an electric vehicle, adapted to effectively reduce tire wear of the vehicle while at the same time ensuring appropriate turning response.A turning motion assistance device for an electric vehicle including steered wheels 101 and 102, driving wheels 103 and 104, motors 105 and 106, and a steering wheel 108 for controlling a steering angle of the steered wheels 101 and 102, includes a target wheel slip angle calculating unit 151 for calculating a target wheel slip angle from the steering angle, a vehicle state quantity detector for detecting vehicle state quantities, an actual vehicle-body slip angle calculating unit 152 for calculating an actual vehicle-body slip angle from the vehicle state quantities, an actual wheel slip angle calculating unit 153 for calculating an actual wheel slip angle from the actual vehicle-body slip angle and the steering angle, a yawing moment requirement calculating unit 154 for calculating a yawing moment requirement from a difference between the target wheel slip angle and the actual wheel slip angle, and a torque correction data calculating unit 155 for calculating an amount of torque correction for generating the yawing moment required; in this assistance device, a torque that has been corrected in accordance with the amount of torque correction is applied from the motors 105 and 106 to the driving wheels 103 and 104, respectively.