Racing vehicle game
AssigneeChina Industries Limited
InventorsDavid Alan Keating, James Edward Alexander Wyatt
Life of this patent
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Abstract
A method and apparatus for controlling the position of a vehicle on a track so as to provide a slotless racing vehicle game is described. The method involves measuring the lateral position of the vehicle on the track so as to minimise the distance with a user defined lateral position. A measured velocity of the vehicle is then feedback to a steering servo in order to stabilise the vehicle's position at the desired lateral position. In particular, the gain of a controller that generates the input signal for the steering servo is varied with the reciprocal of the square of the speed of the vehicle.
Claims20
A method for controlling the position of a vehicle on a track wherein the method comprises the steps of:
- taking a first measurement of a lateral position of the vehicle on the track;
- comparing the first measured lateral position with a desired lateral position for the vehicle so as to produce an error signal;
- generating a first input signal for a steering servo of the vehicle so as to minimise the error signal;
- measuring the speed of the vehicle;
- employing the measured speed so as to compensate for speed dependent changes in a response of the vehicle to an output signal from the steering servo.
A control circuit for controlling the position of a vehicle on a track wherein the control circuit comprises:
- a first measurement sensor for measuring a first lateral position of the vehicle on the track;
- a subtractor employed to produce an error signal by comparing the first measured lateral position with a desired lateral position for the vehicle;
- a controller for generating a first input signal for a steering servo of the vehicle so as to minimise the error signal;
- velocity sensor for measuring the speed of the vehicle;
- wherein the controller provides a means for employing the measured speed so as to compensate for speed dependent changes in a response of the vehicle to an output signal from the steering servo.
Dependencies are inferred from the claim text.