|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||244/194; 244/017.11; 244/017.23; 244/017.13|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 1 인용 특허 : 18|
There is provided a method and apparatus for controlling a toy helicopter in flight. The toy helicopter is powered by a first rotor and a second rotor. A target speed ratio is determined for the speed of the first rotor and the speed of the second rotor. The speed of the rotors is adjusted incrementally until the target ratio is achieved
1. A method for controlling a toy helicopter, the helicopter having a first rotor and a second rotor, the first rotor being driven by a first motor, and the second rotor being driven by a second motor, power being provided to the first motor and the second motor using pulse width modulation; the first rotor having a first rotor speed and the second rotor having a second rotor speed, the first rotor speed and the second rotor speed being adjusted such that the helicopter is stable in flight, a ratio of the adjusted first rotor speed to the adjusted second...