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| Number | Title | Issue Date |
| 7965055 | Control device of work positioning apparatus A control device of a work positioning apparatus includes an operating limit line storage unit for storing position coordinates of an operating limit line, a speed reduction zone storage unit for storing a width of a speed reduction zone ranging from a reduction sta... | 06/21/2011 |
| 7598696 | Surgical apparatus including a hand-activated, control assembly and method of using same A surgical apparatus and method according to which an assembly is connected to a handpiece and includes a sensing element and a member adapted to move relative to the sensing element to control the operation of a motor in the handpiece. ... | 10/06/2009 |
| 7479751 | Elimination of unintended velocity reversals in s-curve velocity profiles A method is employed to eliminate undesired velocity reversal in a motion profile. A start speed, a start acceleration, a speed limit, an acceleration limit, a deceleration limit, an acceleration jerk limit, and a deceleration jerk limit are programmed for the motio... | 01/20/2009 |
| 7408314 | Control device for movable body An encoder 13 determines the remaining travel distance of a stacker crane to perform deceleration control. When a linear sensor 8 determines an absolute distance from the stop position, the linear sensor 8 performs deceleration control, and when... | 08/05/2008 |
| 7394218 | Servo system for a two-dimensional micro-electromechanical system (MEMS)-based scanner and method therefor A servo control system micro-electromechanical systems (MEMS)-based motion control system (and method therefor), includes a motion generator having an inherent stiffness component. ... | 07/01/2008 |
| 7328120 | Acceleration/deceleration control method and apparatus as well as program of acceleration/deceleration control method To provide an acceleration/deceleration control method, apparatus and the like for determining the acceleration/decelerations of motors according to, for example, the drive directions, acceleration and deceleration of the motors by a simple algorism. A gravity torqu... | 02/05/2008 |
| 7304446 | Sensorless and brushless DC motor A sensorless and brushless motor is disclosed including a stator, a rotor, a control circuit and an induction coil (50). The stator includes a stator core (30) and a stator coil (34) wound around the stator core. The rotor includes a rotor magne... | 12/04/2007 |
| 7292910 | Method and device for machining a workpiece A method for machining workpieces by means of a multiaxial manipulator, such as an industrial robot, with a tool moved proportionally by a control unit of the manipulator and which can perform characteristic movements with several degrees of freedom is characterized... | 11/06/2007 |
| 7279860 | System and method for evaluating back electromotive force in a motor Methods for evaluating back electromotive force (EMF) in a polyphase motor is described. The methods include monitoring back EMF in the motor after a commutation of the motor, and evaluating the back EMF only after a back EMF event occurs after the commutation of th... | 10/09/2007 |
| 7280899 | S-type smooth command generating method and means thereof An S-type smooth command generating method and the means thereof are provided to process the motion commands smoothly, thereby generating continuous velocity commands and position commands. The provided method not only improves the motor's ability of acceleration/de... | 10/09/2007 |
| 7275332 | Multi-axis positioning apparatus An apparatus for supporting a platform (84) relative to a base (82), has first, second, and third flexible shaft couplings (80). Each flexible shaft coupling (80) is mechanically coupled between the platform (84) and the base (8... | 10/02/2007 |
| 7262578 | Direct control of an induction motor This invention relates to sensorless control (i.e. without encoder at the motor shaft) of an induction motor (AC asynchronous motor). In particular, the invention comprises a method for a direct measurement of the electromotive forces (EMF) at the stator of the moto... | 08/28/2007 |
| 7253578 | Pivoting apparatus of industrial robot There is provided a pivoting apparatus of an industrial robot including: a brake 40 that is fixed to a motor shaft 30s of a motor 30 to halt the motor 30; an encoder 50 that is fixed to the motor shaft 30s to d... | 08/07/2007 |
| 7248012 | Teaching data preparing method for articulated robot Set the first temporary attitude of an end effector for a plurality of work points (step S3). Determine the attitude of an articulated robot at one-end first work point out of a plurality of work points (step S4). Determine the attitude of an articulat... | 07/24/2007 |
| 7239944 | Programmable lawn mower A robotic apparatus for traversing a selected area autonomously that senses orientation relative to the Earth's magnetic field or other “environmental” signals. The robotic apparatus is provided in two models, a master that can record directive and compass or ... | 07/03/2007 |
| 7222444 | Coordinated linkage system for a work vehicle A work vehicle with a tool pivotally attached to a linkage, an actuator for controllably moving the tool about its pivot, and a tilt angle sensor for sensing the absolute angle of the work tool relative to the earth. A controller is adapted to perform an auto-hold f... | 05/29/2007 |
| 7211979 | Torque-position transformer for task control of position controlled robots Torque control capability is provided to a position controlled robot by calculating joint position inputs from transformation of the desired joint torques. This is based on calculating the transfer function 1/E(s), which relates the desired joint torque to joint pos... | 05/01/2007 |
| 7212886 | Robot control apparatus and method A robot control apparatus including a motion torque calculating section for calculating a motion torque command which is required for a motion of a servo motor, a disturbance torque estimating section for calculating a disturbance torque, a minute displacement relat... | 05/01/2007 |
| 7206659 | Numerical controller A numerical controller capable of obviating the waste of a workpiece by machining such that a position deviation by learning control is converged and automatically performing storage of correction data and actual machining. A tool and the workpiece are moved to noni... | 04/17/2007 |
| 7205743 | Controller for machine effecting end A controller for controlling a position of a driven element with respect to a machine effecting end so as to be in accord with a command. An acceleration sensor is mounted to a member of the machine effecting end to which a tool is attached. Acceleration detected by... | 04/17/2007 |
| 7194321 | Modular multi-axis motion control and driving system and method thereof A modular multi-axis motion control and driving system includes a control board having a DSP and Flash ROM; a plurality of driver boards connected to the control board though a bus, each board including a FPGA device and a plurality of MOSFET power amplifiers; a com... | 03/20/2007 |
| 7193385 | Digital control of motor drives A digital controller is easily implemented for variable speed or torque control of an electric motor or generator by using a comparator to determine a choice of control state outputs. ... | 03/20/2007 |
| 7187142 | Motor drive with velocity noise filter A drive unit for controlling a motor includes a position feedback device and a velocity noise filter. The position feedback device is operable to generate a position signal relating to a position of the motor. The velocity noise filter is coupled to the position fee... | 03/06/2007 |
| 7179044 | Method of removing substrates from a storage site and a multiple substrate batch loader A substrate handling robot includes an arm drive mechanism. A first arm is connected to the arm drive mechanism. A multiple substrate batch loader is connected to the first arm. A second arm is also connected to the arm drive mechanism. A single plane end effector i... | 02/20/2007 |
| 7180253 | Method and system for generating multi-dimensional motion profiles A motion control system comprises control logic and a programming interface. The programming interface is configured to permit a user to specify a plurality of non-tangential path segments, and the control logic is configured to generate a plurality of additional co... | 02/20/2007 |
| 7164250 | Open-loop voltage driving of a DC motor The driving voltage of the motor is incremented a quantity proportional to the speed of the motor according to a proportionality factor that is adjusted to compensate the back electromotive force. A method includes open-loop voltage control of a DC motor having a ce... | 01/16/2007 |
| 7157878 | Transient compensation voltage estimation for feedforward sinusoidal brushless motor control A method for controlling a voltage mode controlled electric machine comprising: receiving a torque value representative of a desired torque; obtaining a speed value indicative of a rotational velocity of the electric machine; acquiring a phase advance value indicati... | 01/02/2007 |
| 7138784 | Position command and pulse timing command optimization for step motors, using a position sensor Optimized pulse commands are utilized for reducing vibration in a step motor, the optimized commands being created by correcting position, velocity, acceleration, deceleration, and movement distance terms of a basic motion profile with position feedback information ... | 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 |
| 7119511 | Servo system for a two-dimensional micro-electromechanical system (MEMS)-based scanner and method therefor A servo control system for a micro-electromechanical systems (MEMS)-based motion control system (and method therefor), includes a motion generator having an inherent stiffness component. ... | 10/10/2006 |
| 7107132 | Programmable lawn mower A robotic apparatus for traversing a selected area autonomously that senses orientation relative to the Earth's magnetic field. The robotic apparatus is provided in two models, a master that can record directive and compass readings to provide at least one command r... | 09/12/2006 |
| 7103457 | Programmable lawn mower A robotic apparatus for traversing a selected area autonomously that senses orientation relative to the Earth's magnetic field or other “environmental” signals. The robotic apparatus is provided in two models, a master that can record directive and compass or ... | 09/05/2006 |
| 7095201 | Method and apparatus for providing a user selectable start-up current in a disk drive A method and apparatus for providing a user selectable start-up current in a disk drive are provided. A user may select a relatively high start-up current to provide a relatively fast start-up time in a disk drive. Alternatively, the user may select a relatively low... | 08/22/2006 |
| 7078872 | System and method for conditioning a signal A method of conditioning a signal being communicated between a system to be controlled and a controller may include monitoring an actual output signal and conditioning the actual output signal. The method also includes determining the difference between the actual o... | 07/18/2006 |
| 7079931 | Positioning system for an excavating work machine A system and method for determining a position of a work tool of a work machine is provided. A desired surface configuration for a geographic location is identified. A mode of operation for the work machine is selected from one of a first mode and a second mode depe... | 07/18/2006 |
| 7076980 | Robot and method for bending orthodontic archwires and other medical devices A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a base or ta... | 07/18/2006 |
| 7068002 | Motor control device A motor control device comprises: a current limiter 115 for limiting a current-instruction signal Ir for a motor 18 and for turning a limiting signal L from off to on when the current-instruction signal Ir reaches a predetermined value; a model-positio... | 06/27/2006 |
| 7051447 | System and method for measuring coordinate using multi-joint arm Methods and systems for realizing accurate coordinate measurement using a multi-joint measuring arm. A system includes a support member, a multi-joint measuring arm having a first end attached to the support member and a second end at which a probe can be installed,... | 05/30/2006 |
| 7050862 | Servo controlling device and method When a position/speed feedback changes while a control system for driving a feed axis uses an integration gain during a shaft stopping, the control system goes unstable to cause a torque instruction to vibrate or diverge. In addition, only a single, narrow-range fee... | 05/23/2006 |
| 7042185 | Robot control apparatus and control method thereof A robot control apparatus to control an operation path of a robot includes an interpolator including a rough interpolation processor to output a rough velocity signal of no-acceleration and no-deceleration according to input commands, a plurality of acceleration/dec... | 05/09/2006 |
