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| Number | Title | Issue Date |
| 7357202 | User input for vehicle control A user input for controlling acceleration of a vehicle. The user input has a movable member capable of deflection by a user such that a degree of deflection corresponds to a specified velocity commanded by the user. The correspondence between the degree of deflectio... | 04/15/2008 |
| 7342673 | Device for defining participants of a control system for a printing machine A device for defining participants in a control system that controls a printing machine is provided. The control system includes a central computer and a number of participants which interact with the central computer in order to carry out processes. The participant... | 03/11/2008 |
| 7331445 | Methods and systems to facilitate spiral conveyance According to a first aspect of the invention there is provided a conveyor system that includes a rotatably-mounted drum and a conveyor belt that is movable along a path that includes a helical portion around the drum. During movement of the conveyor belt, a surface ... | 02/19/2008 |
| 7304397 | Fuel cell system A fuel cell based system for the generation of electrical energy employs a drive unit that includes at least two electric motors sharing a common rotor which is mechanically coupled to drive a compressor to provide oxidant and/or fuel to a fuel cell. An electrical s... | 12/04/2007 |
| 7243870 | Portable studio hoist A portable studio hoist which can be positioned and secured in a studio pipe grid or other structural setting without the need for hard wired power supplies or fixed attachments. The portable studio hoist is designed to operate on standard single phase 120 volt powe... | 07/17/2007 |
| 7235948 | Forklift and method for controlling induction motor applied to the same A forklift having a cargo apparatus, the responsiveness of which to the operation by a user is improved. The forklift has: a DSP which generates a frequency instruction f* in response to the operation to a cargo apparatus operation lever, a voltage instruction V* fr... | 06/26/2007 |
| 7174731 | Rotational speed control system, rotatingly driving system, air blow system, clean bench, outdoor unit of air conditioner This invention relates to a rotational speed control system including a plurality of motor drivers for driving motors, and the object thereof is to drive a plurality of motors at the same rotational speed without depending on the number of motor drivers and without ... | 02/13/2007 |
| 7175175 | Driving apparatus, sheet processing apparatus having driving apparatus, image forming apparatus having sheet processing apparatus and control system A driving apparatus includes a plurality of driving devices; a plurality of malfunction detectors for detecting a malfunction of the driving devices; a plurality of electric current setting devices for setting electric currents through the driving device; and a cont... | 02/13/2007 |
| 7164242 | Variable speed drive for multiple loads A variable speed drive is provided having a converter to convert an AC voltage to a DC voltage, a DC link to filter and store energy from the converter, and a plurality of inverters, wherein each inverter is configured to convert a DC voltage to an AC voltage to pow... | 01/16/2007 |
| 7156391 | Driving apparatus, sheet processing apparatus having driving apparatus, image forming apparatus having sheet processing apparatus and control system A driving apparatus includes a plurality of driving devices, a plurality of detectors for detecting a malfunction of the driving devices, and a controller, which is responsive to a detection result of the detectors, for decreasing a driving speed of a driving device... | 01/02/2007 |
| 7132809 | Fan-controlling system to control a plurality of fans with different pulse width modulation signals A fan controlling system applicable in an electronic system having a plurality of fans is disclosed. The fan-controlling system includes a first signal generating module and a second signal generating module for generating a first and a second pulse width modulation... | 11/07/2006 |
| 7116065 | Electric vehicle An electric vehicle in which left and right electric motors respectively driving left and right transporting parts are controlled by a control part and particular turning control of the electric motors is carried out when the electric vehicle turns. The electric veh... | 10/03/2006 |
| 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 |
| 7086260 | Method and device for controlling the thickness of a rolled product The invention relates to a method and a device for controlling the final thickness of a rolled product (B) at the outlet of a rolling mill including at least two roll stands (1–5) operating in tandem and associated with a general speed control system of the... | 08/08/2006 |
| 7034481 | Power transmission device for hybrid vehicle To provide a power transmission device that can increase the range of speed variation between an engine and a power output shaft and effectively achieve reduction in size and cost of the device arrangement. The speed reduction ratios from an engine 1 to first... | 04/25/2006 |
| 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 |
| 6996333 | Fan speed control A fan speed control includes a power adapter, a CPU programmed with a phase splitting program, a current-limit resistor, a capacitor, a TRIAC, and a switch module, the CPU having a signal input terminal connected in series to the power input terminals of the power a... | 02/07/2006 |
| 6933687 | Dual motor configuration with primary brushless motor and secondary integrated speed control motor A dual motor configuration 10 is provided for driving two fans for moving air to cool an engine. The dual motor configuration includes a primary brushless motor 18 constructed and arranged to be electronically controlled to drive a first fan 16 ... | 08/23/2005 |
| 6910553 | Building elevator A building elevator with an elevator mast and an elevator car with at least one electric drive motor for the elevator car for moving the same along the elevator mast. A novel overload-prevention device for the building elevator has two drive motors with the device i... | 06/28/2005 |
| 6809484 | Multiple electronically commutated motor control apparatus and method A cooling system includes multiple cooling fans, each driven by a corresponding fan motor controller. Each fan motor controller includes electronic commutation circuitry that is responsive to a modulated signal to control the speed of the associated motor and fan. T... | 10/26/2004 |
| 6734644 | Control method for wiper apparatus A method (and apparatus) includes that a duty ratio of a driving voltage output to each wiper motor be required to be set according to several conditions. That is, while each wiper blade is moved in an interval from a starting position to a predetermined first wipin... | 05/11/2004 |
| 6724161 | Image forming apparatus and control method of motor therein The invention concerns an improvement of a drive system of a color image forming apparatus. The color image-forming apparatus includes a plurality of image-forming elements; a plurality of first driving motors, each of which corresponds to each of the image-forming ... | 04/20/2004 |
| 6658335 | Method and apparatus for motor velocity measurement compensation in electric power steering damping A method for generating a compensated torque command signal to be applied to an electric power steering motor is disclosed. In an exemplary embodiment, the method includes generating an assist torque command signal responsive to a measured vehicle speed a... | 12/02/2003 |
| 6226582 | Integrated control for electric lift trucks A control system for an electric lift truck that controls a traction motor and a hydraulic pump motor is disclosed. The speed of rotation of both motors is controlled by a pulse width modulated current supplied from a battery source by the controller in d... | 05/01/2001 |
| 5973463 | Driving controller for electric vehicle A driving controller of electric vehicles. An angular accelerative dimension error calculator calculates error information having a dimension of angular acceleration of a car body. A feedback torque calculator calculates the feedback torque on the basis o... | 10/26/1999 |
| 5905346 | Power output apparatus and method of controlling the same A power output apparatus (20) of the present invention includes a clutch motor (30), an assist motor (40), and a controller (80) for controlling the clutch motor (30) and the assist motor (40). The clutch motor (30) includes an outer rotor (32) linked wit... | 05/18/1999 |
| 5877605 | Servo device having plural servo systems A servo device which simultaneously controls plural servo systems, using a digital signal processor (DSP). The servo device includes plural servo systems, plural control subjects, and plural sensors which determine control quantities of the respective con... | 03/02/1999 |
| 5796220 | Synchronous drive system for automated textile drafting system An automated drafting system particularly suitable for drafting textile strands of sliver is provided. The automated drafting system includes a synchronous drive sliver drafting roller system utilizing toothed gears in the preferred embodiment operatively... | 08/18/1998 |
| 5760564 | Dual guide beam stage mechanism with yaw control A dual guide beam stage mechanism for accurate X-Y positioning for use e.g. in semiconductor processing equipment provides accurate planar motion and yaw control. Over-constraint between components in their relative motion is minimized by utilizing flexib... | 06/02/1998 |
| 5712543 | Magnetic switching element for controlling a surgical device An apparatus for controlling a surgical device includes a housing and a magnetic switching element mounted on the housing. The magnetic switching element includes a magnet, a magnetic sensor configured to produce a control signal for controlling the surgi... | 01/27/1998 |
| 5705908 | Drive unit and a motor drive control method A drive unit capable of maintaining the stability of driving speed with respect to the driven part in which the motor is not used at a low drive efficiency. Said drive unit comprises the first and second stepping motors 12 and 14 transmitting power to the... | 01/06/1998 |
| 5638387 | Electrically driven lift truck A lift truck has a tractive-power electric motor, an electric motor which actuates a pump for the hydraulic circuits, and batteries which supply the electric motors. In order to obtain a long working life as well as reliability and a high performance, the... | 06/10/1997 |
| 5627438 | Pulsing control for an inertial drive system for a multi-motor binary array vehicle A pulsing drive system delivers pulsed power signal of the driven wheels of a vehicle for improving the efficiency internal combustion or an electric motor driven vehicles. A controller receives signals such as velocity and demand, and communicates to a m... | 05/06/1997 |
| 5606231 | Vibrating table for masses to be compacted and a vibratory method of compaction for the compaction of concrete A vibrating table for compaction of a mass such as concrete. The vibrating table includes a table top adapted to support the mass to be compacted. Support members support the table top above a floor and provide the table top with two degrees of freedom of... | 02/25/1997 |
| 5528114 | Apparatus for driving two motors Plural systems of switching signals are obtained from a single microprocessor for driving a plurality of motors and other apparatuses while achieving effective use of ports of the microprocessor. In principle, three kinds of switching signals based on thr... | 06/18/1996 |
| 5487437 | Coupled differential turning control system for electric vehicle traction motors A turning control system for an electric vehicle includes a differential filter which receives a signal indicative of a desired vehicle steer angle and generates a pair of signals representative of proportional speed and direction at a left and a right dr... | 01/30/1996 |
| 5345154 | Electric continuously variable transmission and controls for operation of a heat engine in a closed-loop power-control mode A heat engine operates an alternator that supplies electrical power to an electric continuously variable transmission for driving at least one ac motor through a differential to multiple wheels or to multiple independent ac wheel motors in an automobile, ... | 09/06/1994 |
| 5248922 | Multi-DSP, multi-functional motion controller A motion controller, which is adaptable to a variety of different motors, provides motor control signals to the motors of a multi-axis coordinated system as a function of position and velocity commands from a host computer. The motion controller configure... | 09/28/1993 |
| 5239245 | Method of controlling rotational speeds and phases of a drum motor and a capstan motor in a VCR A method of controlling the rotational speeds and phases of drum and capstan motors forming part of a servo system in a VCR by detecting signals that correspond to current rotational speeds and phases of the motors, and controlling the rotational speeds a... | 08/24/1993 |
| 5239247 | Reconfigurable master-slave control A machine control permits the selection of input values defining configurations of motors on the machine in desired master-slave relationships. Individual master-slave dependencies may be selectively activated and deactivated. In response to a new command... | 08/24/1993 |
