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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7224141 | Position controller of motor A position controller of a motor in which the position time can be shortened even if an external force is applied. A speed control unit (13) comprises a compensation low-pass filter (133) having a transfer function corresponding to a delay of a speed c... | 05/29/2007 |
| 7138782 | Motor control system and method of the same The present invention provides a motor control system and method thereof. The motor control system comprises a motor controller and a compensation device. The motor controller is used for generating a motor control output according to a reference signal and a first ... | 11/21/2006 |
| 7129665 | Control apparatus for feed driving system A control apparatus for a machine that can be operated at high precision in a stable control state is provided by driving a movable body with control parameters suited to the mechanical state. A control parameter calculation circuit is provided to obtain control par... | 10/31/2006 |
| 4855744 | Angle digitizer A system for producing a digital representation of the value of an angle θ, typically a phase angle, from two analog input quantities representative of A sin θ and A cos θ, where A is an amplitude factor, comprises logarithmic amplifiers (IC1-IC4) whic... | 08/08/1989 |
| 4492901 | Control system for synchronizing combination press line A control system for synchronizing a combination press line comprised of a transfer press and a double-action press. The transfer press is set as a master press and the double-action press as a slave press following the transfer press in operation. The transfe... | 01/08/1985 |
| 4354144 | Transmissionless drive system A continuously variable transmissionless drive system providing maximum torque at low speeds. The system is usable in a hybrid vehicle having a prime mover, such as an internal combustion engine, operated at its optimum rpm for efficiency. The prime mover... | 10/12/1982 |
| 4029949 | Servo-controlled microscope stage A system for controlling the position of a movable element, such as a microscope slide in one embodiment thereof, which system includes a unique high resolution digital-to-analog converter which converts a digital command signal to an analog servo input c... | 06/14/1977 |
| 4000449 | Electrical shaft system Two movable members driven by individual motors are positioned accurately at any given time and are tracking each other for all displacements. Individual positioning is used with differential positioning to force a follow-up of one member relative to the ... | 12/28/1976 |
