Bizarre Patents
A simulation environment for the sport of boxing utilizing a robotic machine interface system which carries a person
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7358717 | Input by-pass circuit for a current probe An input by-pass circuit for a current probe has first and second switches coupled between current probe inputs and current sensing circuit inputs. A switch control is coupled to the switching circuit for selectively coupling and decoupling the current probe inputs ... | 04/15/2008 |
| 7321229 | Inductive position sensors with secondary windings with increased or decreased number of turns A position sensor comprising a primary winding (26) for generating a magnetic flux, a first secondary winding (24.1) the number of turns of which increases in one direction, a second secondary winding (24.2) the number of turns of which increase... | 01/22/2008 |
| 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 |
| 6955097 | Radial movement capacitive torque sensor A radial movement capacitive torque sensor includes a pair of concentric capacitor plate rings lying in a common plane, a capacitor plate ring facing the pair of concentric capacitor plate rings, and a paddle assembly disposed between the pair of concentric capacito... | 10/18/2005 |
| 6384598 | Inductive position sensor having multiple receiving geometries Described is an inductive position sensor, in particular for a motor vehicle, which has an oscillator circuit that generates a periodic alternating voltage signal and couples into an exciting coil, several receiving coils each of which forms a periodicall... | 05/07/2002 |
| 6331759 | Pulse drive angle measurement system and method A resolver system and method is provided for determining the angle position of a shaft. The resolver system includes a resolver having first and second output windings and an input or reference winding spaced apart from the first and second output winding... | 12/18/2001 |
| 6304076 | Angular position sensor with inductive attenuating coupler A non-contact angular position sensor has juxtaposed transmit and receive disks with a coupler disk, carrying a conductive attenuating pattern interposed therebetween. A pattern of inductive coils, which completely encircle both the transmit and receive d... | 10/16/2001 |
| 6211641 | Capacitive resolver The present invention provides a capacitive resolver (100). The capacitive resolver (100) includes a charge plate (102), a sensing plate (106), and an interrupter plate (400) positioned between the charge plate (102) and the sensing plate (106). The front... | 04/03/2001 |
| 6107764 | Drive control for a switched reluctance motor A control circuit and method for controlling a switched reluctance motor are provided. The control circuit includes a tone wheel and a Hall effect sensor for generating a position feedback signal indicative of the position of the motor. The control circui... | 08/22/2000 |
| 6084368 | Arrangement for the contactless inductive transmission of electric measurement values and/or electric energy between a rotor and a stator The known arrangements have at least one rotor coil (RS) arranged on the rotor and at least one stator coil (SS) arranged on the stator. The rotor coil (RS) and the stator coil (SS) respectively have at least one winding (WI) and there is a magnetic coupl... | 07/04/2000 |
| 5793202 | Position sensor, employing electromagnetic induction A position sensor is provided with a displacement signal output circuit 1 that amplifies an electromagnetically induced and detected current signal from a slider and converts the result to a rectangular wave signal; a phase difference detection circuit th... | 08/11/1998 |
| 5708344 | Resolver for detecting rotation position on the basis of response current to pulse voltage A pulse excitation circuit applies a constant voltage to windings, each of which is wound around a respective one of four magnetic poles of a resolver stator. In each of the respective windings, a voltage is generated corresponding to the rotation of the ... | 01/13/1998 |
| 5304909 | Resolver excitation signal generating apparatus The present invention relates to a resolver excitation signal generating apparatus for supplying a reference excitation signal to a resolver attached to a motor for driving a robot or a computer numerical control machine. When a sine-wave signal is transf... | 04/19/1994 |
| 5231340 | Servomotor control method An improved servomotor control method where a multiplier ratio DMR is computed in advance by an arithmetic unit (20) from a traveling distance L of a movable machine element per revolution of a servomotor, a traveling distance R per pulse of a move comman... | 07/27/1993 |
| 5196776 | Waveform generator for a resolver A waveform generator for a resolver transducer or the like is described. Such generator forms two 3-level waveforms which approximate sinusoidal waveforms for the excitation and/or output detection of such a resolver. Each of the sinusoidal waveforms is f... | 03/23/1993 |
| 5140240 | Encoder A rotational position detection encoder includes at least two detection heads located along a slit string of a code plate. The detection signals of one of the detection heads are processed to generate a plurality of phase offset signals having successivel... | 08/18/1992 |
| 4970450 | Deriving rotational rate and angular position with a function generator Angular position and rotation rate of a function generator having stator windings and rotor windings are determined by first amplitude modulating a carrier oscillation to form a sine signal and a cosine signal and then feeding the sine signal and cosine s... | 11/13/1990 |
| 4893078 | Absolute position sensing using sets of windings of different pitches providing respective indications of phase proportional to displacement For enabling a resolver to have absolute position sensing over a wide displacement range while still obtaining the resolution, accuracy and precision obtainable by operation in an incremental mode, the resolver is provided with a number of terminals for p... | 01/09/1990 |
| 4651130 | Apparatus and method for retaining phase information for use with a multiple-coil inductive displacement sensor Phase information in a multiple-coil indictive displacement sensor is retained by summing the excitation signal with each of the secondary signals to provide augmented secondary signals which may then be converted to a digital format. A signal processor m... | 03/17/1987 |
| 4535277 | Position control apparatus and method A position control system of closed-loop configuration in which a position detector is provided on a motor-driven machine element for sensing the position thereof and a rotary encoder is provided on the motor shaft for detecting the rotational speed there... | 08/13/1985 |
| 4511884 | Programmable limit switch system using a resolver-to-digital angle converter Disclosed is a microcomputer controlled system in which the resolver reference voltage is generated through microcomputer interrupts and the analog-to-digital conversion of the resolver outputs ratio is also timed by the microcomputer to match peaks of th... | 04/16/1985 |
| 4463299 | Capacitive sensor motor control system A servo motor system including a position sensor located within the motor air gap to virtually eliminate mechanical compliance in the servo loop. The transducer is of a capacitive type including interleaved capacitive plates and is designed to be substant... | 07/31/1984 |
| 4449117 | Encoder tracking digitizer having stable output A digitizer for receiving sine and cosine encoder signals and providing a digital output representative of the phase angle of the encoder. A counter is used to generate a variable reference angle, and memories are used to generate digital signals represen... | 05/15/1984 |
| 4442390 | Feedback system for a linear actuator A feedback system is disclosed for use in a remote control linear actuator device including a pair of actuator members that are relatively linearly displaceable by a motor, which feedback system includes a mounting bracket connected with one of the actuat... | 04/10/1984 |
| 4390865 | Apparatus for digital position measurements by a cyclic position transducer For each axis, a cyclic transducer has a scale supplied with a sinusoidal signal from a timing unit and a cursor which provides two output signals which are proportional to the sine and to the cosine, within the elementary interval of the transducer. Sin ... | 06/28/1983 |
| 4378519 | Transducer system with increased tracking capability The number of data tracks or positions that a transducer can access or track is increased, beyond that conventionally permitted by the transducer conductor spacing, by first providing a plurality of signals corresponding in number to the factor by which t... | 03/29/1983 |
| 4339700 | High frequency control system using digital techniques An apparatus for accurately controlling the rotary position of a high speed position control servo system having a servo motor which is fed by a conventional servo amplifier and drive amplifier means with a tachometer feedback to the drive amplifier. Inco... | 07/13/1982 |
| 4319172 | Numerical control system A numerical control system is provided for a table having a relatively stationary member, a relatively movable member and a position transducer, such as an inductosyn, operatively positioned between them. The numerical control system comprises a high freq... | 03/09/1982 |
| 4251760 | Gauging and tool control system for production of identical parts A system for duplicating a master part includes a gauge for measuring changes in the dimension therein of a master part to be duplicated and for providing control signals representative of changes from a predetermined dimension. The control signals are ap... | 02/17/1981 |
| 4138253 | Method for making a member of a position measuring transducer A method for making an improved member of a position measuring transducer is disclosed, wherein the member has a pattern of uniformly pitched bars thereon. The method comprises the steps of superimposing a plurality of positionally shifted latent images o... | 02/06/1979 |
| 4103215 | Torque repeater self-driver A device employing the inherent self-torquing properties of a torque repeater to position its rotor. In the present invention, the torque repeater or synchro may have three stator windings and an output rotor. It is contemplated that the electrical input ... | 07/25/1978 |
| 3995267 | Digital to analog converter with system gain insensitivity A position-measuring system in which an improved digital to analog converter accepts an error signal from a position measuring transducer, the error signal being processed to be a digital signal representation of the magnitude and two-state direction of a... | 11/30/1976 |
| 3988657 | Inductive device for precisely positioning a movable member A device for precisely positioning a movable member along a rectilinear path, wherein a plane conductive winding is attached to and moves with said member, wherein sensors are spaced apart along said path opposite to said winding, and wherein a control ci... | 10/26/1976 |
