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| Number | Title | Issue Date |
| 8188699 | Motor characteristics acquiring apparatus, control apparatus using the acquired motor characteristics, and power window control apparatus The rotation period of a motor is subdivided by edge interval times and a rate of change between a currently calculated edge interval time and an edge interval time calculated one rotation of the motor previously is calculated at the detection of each edge. Then the... | 05/29/2012 |
| 8080965 | Motor controller with deterministic synchronous interrupt having multiple serial interface backplane In one embodiment, a motor drive is provided that includes a control board and one or more option boards coupled to the control board via one or more serial interfaces such that data from the one or more option boards is communicated via one or more synchronous inte... | 12/20/2011 |
| 8072174 | Motor controller with integrated serial interface having selectable synchronization and communications In one embodiment, a motor drive is provided that includes a control board and a plurality of option boards configured to communicate with the control board via one or more serial interfaces, wherein the one or more serial interfaces are configured to transfer one o... | 12/06/2011 |
| 7973501 | Fan system and motor control device A fan system includes a control device and a fan device. The control device has a first node, a rotation speed signal generation circuit and a rotation speed reading circuit. The fan device has a second node, a signal transforming circuit, a motor driving circuit, a... | 07/05/2011 |
| 7911171 | Device for generating analog current or voltage signal In a device, such as measuring or control signal transmitter, generating an analog current or voltage output signal, absolute values of output variables are continuously measured and regulated to ensure the correctness of the signal. The actual current or voltage va... | 03/22/2011 |
| 7863849 | Delta-sigma modulator for a fan driver A fan driver circuit for powering a fan with a linear voltage may be designed using digital design techniques, resulting in a testable, accurate circuit on a smaller die size. The fan driver circuit may be configured to receive a digital control signal, which may be... | 01/04/2011 |
| 7821220 | Motor having integral programmable logic controller A system, in one embodiment, includes a drive having a housing, a stator disposed in the housing, a rotor disposed in the stator, and a programmable logic controller disposed inside, mounted on, or in general proximity to the housing. In another embodiment, a system... | 10/26/2010 |
| 7804267 | Correction method for microprocessor-controlled digital regulation In a correction method for a microprocessor-controlled digital regulation of a drive motor, wherein the measurement arrangement used for the regulation of the motor is simplified. recognizing that the real value surveying cannot always be implemented periodically by... | 09/28/2010 |
| 7723941 | System and method of command signal conditioning in high response systems A system and method of command signal conditioning in high response systems is disclosed. The system includes a central digital controller having a digital controller frame rate, a motor, a motor controller in communication with the digital controller and the motor,... | 05/25/2010 |
| 7525277 | Command-transmitting device for controlling a motorized blind with orientable slats The command-transmitting device comprises control buttons (11, 12) and a movable control element (2b) movable in two directions along a theoretical axis of operation (D1), these control buttons and this movable control element being arran... | 04/28/2009 |
| 7468593 | Digital system for motor bus transfer In industrial complexes and power stations a main source of power is connected to a motor bus to which motors and other loads are connected. In such systems an auxiliary source of power is provided to alternatively provide electric energy to the motor bus should the... | 12/23/2008 |
| 7443118 | Method and device for triggering an electric motor The invention relates to a method for triggering an electric motor, in particular, an electrically conducting motor with a rotor, where an emergency run is performed as a function of the presence of at least one erroneous sensor signal. The invention also relates to... | 10/28/2008 |
| 7423404 | Sample-loading system and anti-collision device and anti-collision method thereof Some embodiments of the present invention provide an anti-collision device used for a sample-loading system. This device may include a code plate, an optical coupler, a location signal-detecting unit, a drive pulse counting unit and a drive pulse-sending unit. The o... | 09/09/2008 |
| 7421308 | Digital control servo system A limited rotation motor optical scanning system is disclosed that includes a limited rotation motor scanner, a digital controller servo system, a position feedback unit, a wide angle compensation unit, a digital processor, and an adjustment unit. The limited rotati... | 09/02/2008 |
| 7420349 | Microcontroller interface with hall element A device controller system incorporates an inexpensive Hall element to detect motion of a brushless DC motor. A magnet, which is part of a motor rotor, passes by the Hall element producing a Hall voltage each rotation. The Hall voltage is coupled through an interfac... | 09/02/2008 |
| 7365511 | Methods to control high speed electric machines having a front-end EMI filter attached A system and method for extracting estimated input voltage and input current values of an AC motor based on sensed power inverter output voltage and output current when the AC motor is connected to a front-end EMI filter and the EMI filter is connected to a power in... | 04/29/2008 |
| 7362070 | Electric motor control system including position determination and error correction A system for controlling an electric motor includes a controller and a position indicator that provides position information regarding at least one motor component to the controller. The controller utilizes phase relationships indicative of the position information ... | 04/22/2008 |
| 7360862 | Inkjet apparatus and a method of controlling an inkjet mechanism A method of controlling an inkjet mechanism having an inkjet head movable between a capped position and a print position comprises the steps of receiving a first switch signal indicative of the inkjet head moving into the vicinity of one of the positions of the inkj... | 04/22/2008 |
| 7345448 | Adaptive command filtering for servomechanism control systems Preferred embodiments of the invention implement techniques for modifying the command trajectory, the architecture of a servomechanism control system, or both, to reduce the servo error during and/or after the command trajectory. An iterative refinement procedure ge... | 03/18/2008 |
| 7342371 | System and method for detecting motor run condition A motor control system for detecting motor run condition comprises power switches for connection to an AC line for controlling application of AC power to the motor. An input receives a motor start command. A controller is connected to the input and controls operatio... | 03/11/2008 |
| 7341077 | Method for operating a loom A loom having a first drive motor (10), which for instance drives a batten (13), and having at least one second drive motor (44), which drives a dobby (46), is provided with a control and regulating device (48), which forms a rotat... | 03/11/2008 |
| 7342376 | Glass machinery motor control A machine for operating on a glass bottle. A carriage is displaceable by a servo motor having three lead lines. The rotation of the servo motor is stopped when power has been removed by shorting regenerative resistors to the three motor leads. The stopped servo moto... | 03/11/2008 |
| 7339631 | Apparatus and method for correcting color error An apparatus and method for correcting a color error are provided. The apparatus includes, a color wheel having a CWIM marked thereon, a motor for rotating the color wheel, a motor driver for controlling a driving of the motor, a CWIM sensor for sensing the CWIM to ... | 03/04/2008 |
| 7332886 | Control system of motors for rotating a disk and for positioning heads of a mass storage disk device An integrated control and power driving system moves a read/write head carrying arm over the surface of a disk. The integrated control and power driving system is applicable to a spindle motor, a mass storage disk drive and a voice-coil motor, for example, and inclu... | 02/19/2008 |
| 7332887 | Image forming apparatus An image forming apparatus includes a stepping motor that drives a rotor by rotating in accordance with an input of a drive pulse, a drive pulse profile storage portion that stores the drive pulse profiles corresponding to temporal changes of the drive pulse inputte... | 02/19/2008 |
| 7319910 | Method and device for controlling a movement of a movable machine element of a machine tool or production machine A method and device for controlling a movement of a movable machine element of a machine tool or production machine with at least two drive axles are disclosed. At least one mechanical characteristic frequency is determined for each drive axle of the machine, and th... | 01/15/2008 |
| 7317293 | Displacement control system for a vehicle axle Provided is a motor control circuit in which the circuit structure is not complicated, which has a favorable response to the phase difference signal, and in which the signal variation caused by heat is small. This rotation control circuit of a motor includes: a PWM ... | 01/08/2008 |
| 7310410 | Single-leaf X-ray collimator A single-leaf X-ray collimator comprises at least one collimating leaf member having at least one collimating aperture. The collimating leaf member is adapted to be configured to rotate about at least one of a vertical or horizontal plane. The collimator provides el... | 12/18/2007 |
| 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 |
| 7282883 | Pivoting and barrier locking operator system A system for moving a barrier between limit positions, includes an operator motor assembly mounted proximate to the barrier, wherein at least a portion of the motor assembly is movable between an operating position and a locking position with the motor assembly bloc... | 10/16/2007 |
| 7274165 | Numerical controller A numerical controller capable of mitigating mechanical shock caused by tool compensation while a machine tool is operated according to table data. X- and Z-axis path tables Tx, Tz store X- and Z-axis positions corresponding to reference positions (time or spindle p... | 09/25/2007 |
| 7265512 | Actuator with feedback for end stop positioning Methods for operating an actuator including providing a position sensor and using the position sensor to provide end-stop functionality for the actuator. The actuator may have a motor controlled by control circuitry, with the control circuitry reading a variable fro... | 09/04/2007 |
| 7253579 | Automatic tuning method for the feedback control of a motion simulator, and related device A tuning method for a motion simulator embarking a payload. The simulator includes a mechanical device, a mobile plate of which is capable of carrying a payload, and a control unit including a controller capable of position feedback controlling said plate. The metho... | 08/07/2007 |
| 7245101 | System and method for monitoring and control The invention provides for the monitoring and control of a system, such as a linear electro-mechanical transducer, e.g. a linear electric motor, particularly when driven in a reciprocating manner. A dynamic model of the linear motor and its load is used to calculate... | 07/17/2007 |
| 7245100 | Multi-axis AC servo control system and method A multiple axis servo control implements a multi-tasking PWM control unit to provide PWM signals for multiple axes in a single unit. A time slice mechanism provides axis selection signals based on a system clock signal to permit control parameters of the selected ax... | 07/17/2007 |
| 7208901 | Control method for jerk-limited speed control of a movable machine element of a numerically controlled industrial processing machine A control method for controlling a speed of a movable machine element of a numerically controlled industrial processing machine with jerk limitation is described. The processing machine can be, for example, a machine tool, a production machine and/or a robot. A trav... | 04/24/2007 |
| 7208902 | Digital speed controlling apparatus, digital motor controlling apparatus, paper conveying apparatus, digital speed control method, program for making computer execute this method, computer-readable recording medium, and imaging forming apparatus A digital speed controlling apparatus includes: a target speed calculator that calculates a target speed of a driven conveyor belt, based on a sampling time; a current speed calculator that calculates a current speed of the conveyor belt, based on displacement and a... | 04/24/2007 |
| 7200464 | Digital control servo system An improved servo system for galvanometers, scanners and similar devices which uses digital processing to increase the dynamic range and provide greater effective resolution. The system provides digital control of a reference point that directly influences the excit... | 04/03/2007 |
| 7190144 | System and method for adjusting a PID controller in a limited rotation motor system An adjustment system is disclosed for adjusting a proportional, integral, derivative controller in a limited rotation motor system. The adjustment system includes a first transform unit, a second transform unit, a model identification unit, and a PID adjustment unit... | 03/13/2007 |
| 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 |
