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| Number | Title | Issue Date |
| 7843160 | Motor driving control method and motor driving control apparatus A motor driving control method in which when the steering angular velocity is lower than a predetermined reference angular velocity, an actual motor drive current is inferred from a back electromotive voltage and an applying voltage in a three-phase brushless motor,... | 11/30/2010 |
| 7319466 | Method and apparatus for generating and interfacing with a haptic virtual reality environment A method for generating a haptic interactive representation including the steps of defining a haptic interaction space and building a hierarchical construct, for use within the haptic interaction space, using a plurality of underlying constructs. In one embodiment t... | 01/15/2008 |
| 7301297 | Synchronous control device An ‘interval’ in which the synchronization status between the movable axes subject to synchronous control is monitored, an equation between the movable axes in the ‘interval’, and an ‘allowable displacement’ for the positional relationship obtained with ... | 11/27/2007 |
| 7259492 | Rotor axial activation modulation of electric machinery due to reverse torque The invention involves installation of a helical nut structure, or a helical nut and ball or roller bearing structure, between an electric machinery transmission shaft and a driven transmission element. Depending on the torque between the electric machinery rotor, a... | 08/21/2007 |
| 7239106 | System and method for facilitating fluid three-dimensional movement of an object via directional force A reeving system for filming movies, sporting events, or any other activity that requires fluid movement of a camera or other object to any position within a defined volume of space. To accomplish positioning embodiments move an object throughout three-dimensional s... | 07/03/2007 |
| 7215089 | Threading/tapping control apparatus A workpiece is rotated by a master motor and a tool is linearly moved by a slave motor to cut a thread in the workpiece. Position feedback of the master motor is multiplied by a coefficient K and the result used as the position command of the slave motor. Provision ... | 05/08/2007 |
| 7172473 | Rudder indicator A rudder position indicator apparatus includes a cam mounted on a steering linkage of a watercraft. The steering linkage is or an outdrive. When the rudder or an outdrive is in a straight position, the cam activates a micro switch, which in turn, supplies a ground f... | 02/06/2007 |
| 7164965 | Numerical controller and servomotor control system A numerical controller and a servomotor control system, capable of axis control required in case of a communication failure in the control of servomotors driven by servo amplifiers connected to a plurality of serial buses. The numerical controller has a plurality of... | 01/16/2007 |
| 7119505 | Servo motor control system In a servo control system, a numerical control device and at least one servo amplifier are connected to each other with a serial bus to control a servo motor connected to the servo amplifier. In this system, data transfer systems of at least two types for the serial... | 10/10/2006 |
| 7119514 | Inverter An inverter has a measuring part that measures an operating time such as the time interval from when a command to start a specified operation by an associated system until a signal indicating the completion of the operation is received. A comparing part compares thi... | 10/10/2006 |
| 7103499 | 3-D selection and manipulation with a multiple dimension haptic interface Systems and methods provide a user the ability to select three-dimensional virtual objects in a three-dimensional modeling environment using two-dimensional representations of the objects. In broad overview, the invention involves a multidimensional degree of freedo... | 09/05/2006 |
| 7095203 | Numerical controller A numerical controller which, after once stopping a slave axis during superposing control, can easily resume the superposing control. In the superposing control, a motion amount for a master axis and a motion amount for the slave axis are added to a workpiece coordi... | 08/22/2006 |
| 7088061 | Drive system for a group of machines A drive system powering a group of machines each fitted with a rectifying unit, wherein the inputs of the control devices of the machines' drive motors are interconnected by an electrical bus which implements a power exchange. The system enables swapping current fro... | 08/08/2006 |
| 7026778 | Numerical controller A data table stored in a numerical controller associates motors controlled by the numerical controller with information from sensors used by the motors. When the numerical controller is turned on, the contents of the data table are sent from the numerical control se... | 04/11/2006 |
| 7026784 | Inverter An inverter has a measuring part that measures an operating time such as the time interval from when a command to start a specified operation by an associated system until a signal indicating the completion of the operation is received. A comparing part compares thi... | 04/11/2006 |
| 7023151 | Switching device for controlling at least two motors A switching device for controlling at least two motors has a single converter, wherein the at least two motors are connected to the converter by a power line and a feedback line, respectively. At least one logic module is connected to the converter and evaluates sig... | 04/04/2006 |
| 6958752 | Systems and methods for three-dimensional modeling Systems and methods for modifying a virtual object stored within a computer. The systems and methods allow virtual object modifications that are otherwise computationally inconvenient. The virtual object is represented as a volumetric representation. A portion of th... | 10/25/2005 |
| 6147469 | Communication method for machine controller A communication apparatus and method provides communication in a controller of an industrial machine which is not affected by disconnection of cables, external electrical noise, nor complicated lead-around cable work. Communication between a numerical con... | 11/14/2000 |
| 6144183 | Motor driving system and motor driving control unit A motor driving system comprises a plurality of motor driving control units each for controlling a motor and a controller for issuing a control command to a motor driving control unit. The controller and each of the motor driving control units have commun... | 11/07/2000 |
| 6069465 | Group control system for light regulating devices The invention relates to a control system (1) for light regulating devices such as blinds or shades. The control system comprises a control unit (6, 6') for connecting to a motor drive (7) of a light regulating device. The control unit comprises a first i... | 05/30/2000 |
| 5900710 | System for coupling control columns The present invention relates to a system for coupling at least two control columns (2A, 2B) of a control device (DC) of a machine, especially an aircraft. The coupling system includes for each of the columns (2A, 2B), at least one operating member (13A, ... | 05/04/1999 |
| 5841258 | Remote control system for legged moving robot A remote control system for remotely controlling a legged moving robot has a master unit for manipulating the legged moving robot in a master-slave configuration. The master unit has a foot support mechanism for movably supporting an operator's foot, an a... | 11/24/1998 |
| 5539294 | Position detector for remote control system A remote control system for controlling the actuation of control levers through an actuator unit from a remote location by a moveable operator. The system includes a control position detector for detecting the position of the operator which is directly co... | 07/23/1996 |
| 5350326 | Hydraulic pressure generating device for power steering apparatus for outboard engine A power steering apparatus for steering an outboard engine on a boat has a hydraulic cylinder unit for angularly moving a steering arm of the outboard engine, and a hydraulic pump actuatable by a motor for supplying a hydraulic pressure to the hydraulic c... | 09/27/1994 |
| 5059882 | Electromechanical control device usable for piloting a vehicle An electromechanical control device is disclosed usable for piloting a vehicle, comprising a piloting control stick articulated on a support via an articulation with two degrees of freedom and so with two output axes, a detection assembly comprising posit... | 10/22/1991 |
| 4988937 | Synchronous control system and method therefor A synchronous control system for a pair of spindles of a machine tool including a master spindle and a slave spindle. Current positions of the main spindles are detected, and a deviation between the detected current positions is calculated. In case the de... | 01/29/1991 |
| 4888538 | System for remote transmission of angular position and force between master and slave shafts Disclosure is made of a system for remote transmission of the angular position and force between the master and slave shafts, which includes master and slave synchronous machines (1,2) whose shaft position sensors (9,10) are electrically connected to inpu... | 12/19/1989 |
| 4772836 | Motorized electric control device The present invention relates to a motorized electric control device provided with a joystick (14), characterized in that it comprises two electrtic torque motors (4, 5) whose axes of rotation are at right angles to one another, two forks (9, 10) coupled ... | 09/20/1988 |
| 4567417 | Actuator The invention relates to an actuator and to its application to the position servocontrol for a master-slave remote manipulator. The actuator comprises a box or case in which are housed an electric motor, a slightly or non-reversible reducing gear and a torsion... | 01/28/1986 |
| 4484121 | Servocontrol by ultrasonics of the relative position of two mechanical components A servocontrol permits the alignment of a slave mechanical component with a master mechanical component. A probe measures its distance from the master component and another probe measures it distance from the slave component. A circuit processes a square ... | 11/20/1984 |
| 4405884 | Shaft position synchronization means for multiple synchronous induction motors The exact shaft angle position synchronization of two or more ordinary synchronous induction motors is provided. One motor, serving as the master, is powered directly from a source of alternating current. Each additional motor, which may be of a different... | 09/20/1983 |
| 4325014 | Automatic control unit for a wind-following rotor A control unit for automatically controlling the angular position of a reversible, motorized device, such as an antenna rotor, in response to a signal from an external sensor, such as a potentiometer coupled to the rotating shaft of a windvane. The unit i... | 04/13/1982 |
| 4131839 | System for multistation remote position indication and control A system is provided for multistation remote position indication for remotely controlling and indicating the position of a motor driven positioning system, particularly an antenna rotor, at multiple locations utilizing a single pair of control wires to in... | 12/26/1978 |
| 4095160 | Control arrangement for causing track supported implement to remain in parallelism with itself A control arrangement, especially for use with a track supported implement, having an elongated beam with carriages at the opposite ends supported on respective tracks in which pick-up elements on at least one of the carriages are sensitive to movement of... | 06/13/1978 |
| 4093904 | Multi-axis motion generator utilizing feedforward control Apparatus for generating synchronized multi-axis intermittent motion utilizing electronic encoding, memory and a position control system having feed-forward control. A plurality of slave shafts are rapidly and accurately positioned in response to the posi... | 06/06/1978 |
| 4084118 | Synchrotransmission system controlled by Hall effect A system for the synhchrotransmission of angular position data between two rotating shafts, using, as the transmitter and receiver, two two-phase Hall effect motors, of which each rotor 2, 52 has a permanent magnet and each stator is formed by two winding... | 04/11/1978 |
| 4077000 | Directional antenna azimuth control system A system for selectively aiming a directional receiving antenna in one of a plurality of different directions respectively associated with a plurality of broadcast transmitters differently located in azimuth relative to the antenna in response to the entr... | 02/28/1978 |
| 4072887 | Apparatus for adjusting the mutual distances of several elements arranged side by side, particularly pairs of blades for the straight-line cutting of sheet material An apparatus for adjusting the mutual distance of several movable elements placed side by side wherein control means are provided to insure that the various movable elements move in a transposition operation, the same distance as determined by measuring m... | 02/07/1978 |
| 4056763 | Device for controlling a mechanical element with effort return A reversible mechanical unit of the "slave" type comprising a motor element and position detector is controlled by an assembly which delivers command signals relating to the positions of the motor element. Means are provided for delivering an error signal... | 11/01/1977 |
| 4054825 | Control arrangements A control arrangement is described for angularly positioning a member such as an aerial structure in which a potentiometer has a continuous circumferential winding with two sets of tappings of at least two tappings and at least three tappings respectively... | 10/18/1977 |
