Abstract:
A remote-controlled toy motorcycle (10) includes a chassis (20) supported by oversized front and rear tires (25, 35) for increased stability, and a chassis-mounted rider figure (80) having rotating members (94) for contacting a ground surface to prevent excessive wear of the rider figure legs (88) and also to allow the toy motorcycle to self-start from a leaning position. "Counter-steering" is simulated by actuating a steering servo (501, 610) to initially turn a front wheel (24) from a straight original direction (50) to a direction (52, 54) opposite the desired turn direction (54, 52). The front wheel is held momentarily while the toy motorcycle destabilizes and leans in the turn direction. Then, the steering servo is automatically actuated to turn the front wheel in the desired turn direction (54, 52).
Abstract:
An overturn prevention controller for a two-wheeled vehicle, enabling the vehicle to perform stable autonomous traveling by a rather simple control loop even if a zero-set error and offset noise occur. The two-wheeled vehicle has a body, a front wheel, an actuator (7) for steering the front wheel, a rear wheel, and a rear wheel drive part. The vehicle further has an angular velocity sensor (8) and a control means. The angular velocity sensor (8) has a detection shaft attached to a vehicle body, tilted downward a predetermined angle from the horizontal axis in the advance direction of the vehicle, and detecting the angular velocity (?) around the detection shaft. The control means outputs a steering angle command signal (d r) for controlling the actuator. Since an angular velocity (? 1 ) in the lateral tilt direction and an angular velocity (? 2 ) in the azimuth direction are included in the angular velocity (?) detected by the angular velocity sensor, and the zero-set angle and the offset noise are included in the azimuth command, the motorcycle can be prevented from overturning.
Abstract:
A remote-controlled toy motorcycle (10) includes a chassis (20) supported by oversized front and rear tires (25, 35) for increased stability, and a chassis-mounted rider figure (80) having rotating members (94) for contacting a ground surface to prevent excessive wear of the rider figure legs (88) and also to allow the toy motorcycle to self-start from a leaning position. “Counter-steering” is simulated by actuating a steering servo (501, 610) to initially turn a front wheel (24) from a straight original direction (50) to a direction (52, 54) opposite the desired turn direction (54, 52). The front wheel is held momentarily while the toy motorcycle destabilizes and leans in the turn direction. Then, the steering servo is automatically actuated to turn the front wheel in the desired turn direction (54, 52).
Abstract:
The inventive Motorcycle toy comprises a body and wheels and is characterised in that the relationship between the width and shape of said body, the width and shape of the wheels and the location of the centre of gravity is selected such that the distance between the centre of gravity of said toy and the supporting surface thereof is as small as possible only when the toy is in the upright position and continuously increases when the toy tilt angle increases from 0 DEG to 180 DEG .
Abstract:
In order to provide a roll angle controller for remote-controlled traveling body, which is capable of facilitating the steering operation by a driver and stabilizing the attitude of traveling body (model) main body in a wide speed range, a roll angle controller (21) is provided. The roll angle controller (21) is used for a radio-controlled model whose vehicle body (2) is provide with a radio-controlled receiver and a front wheel steering section (20) having a steering motor (13), the vehicle body (2) being adapted to roll according to the actuation of the front steering section (20) and having autonomous stability such that the roll angle is approximately 0°when the manipulated variable for the steering motor (13) is neutral, the roll angle controller comprising a roll angle detecting means (35) for detecting the roll angle of the vehicle body (2), a control means for delivering a manipulated variable with respect to the steering motor (13) on the basis of the deviation between the roll angle (thetai) (detected value) from the roll angle detecting means (35) and the roll angle target value from the radio-controlled receiver so as to bring the roll angle(thetai) closer to the roll angle target value, and an error correcting means for the roll angle detecting means (35).
Abstract:
A fall-prevention control device can precisely estimate a slant angle from a balanced state and accumulates neither noise nor offsets, so that the fall-prevention control device is continuously capable of estimating the slant angle and controlling fall-prevention. The fall-prevention control device is provided with an angular speed sensor, a rotation sensor, and an inertia rotor. The angular speed sensor is fixed to a bicycle robot which can freely decline in the right or left, with a detection axis of the angular speed sensor directed substantially in front and rear directions of the robot. The motor is fixed to a main body of the fall-prevention control device with a rotating axis of the motor directed substantially in the front and rear directions. The rotation sensor detects a rotation position or speed of the motor. The inertia rotor is coupled to the rotating axis of the motor. The motor rotates the inertia rotor and a reaction torque in response to rotation of the inertia rotor is applied to adjust an inclination of the bicycle robot. A slant angle estimation means (25) is also provided to estimate a slant angle with respect to the balanced state in accordance with an angular speed output ? 1 of the angular speed sensor and a torque command t o given to the motor.