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| Number | Title | Issue Date |
| 8035322 | Methods and apparatuses for estimating transient slip A method of determining a slip estimate associated with an induction motor through analysis of voltage and current signals. A fundamental frequency is calculated from a representation (e.g., complex representation) of the voltage signal, and a saliency frequency is ... | 10/11/2011 |
| 7656107 | Control circuit for an arrangement having at least two direct current motors that are connectable in parallel to a direct voltage system The invention relates to a control circuit for an arrangement having at least two DC motors (10, 12), which can be connected in parallel to a DC voltage system (16, 18), in particular a circuit for controlling at least two motors of a motor vehicle fan... | 02/02/2010 |
| 7504784 | Motor driving apparatus of washing and drying machine With the use of three inverter circuits controlled by a single processor, the controller of the motor-driving apparatus provides a rotation drum-driving motor, a compressor-driving motor and a blow fan-driving motor with a simultaneous sinusoidal-wave control. The c... | 03/17/2009 |
| 7391173 | Mechanically decoupled capstan drive A capstan drive includes a first capstan that moves a device on a carriage and a second capstan that receives a second rotary motion to move the carriage. A first power transmission has a driven shaft coupled to the first capstan, a first drive shaft coaxial with th... | 06/24/2008 |
| 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 |
| 7298111 | Method and device for controlling a production unit A method and a device for controlling a production unit in a production installation are specified, controlling referring to the controlling and monitoring of speeds of rotation or angles of rotation of individual drives (20-22) such that the movements... | 11/20/2007 |
| 7222684 | System, apparatus, and method for providing control of a toy vehicle A system, apparatus, and method for providing a soft-start for a toy vehicle configured to be operated by a person. The method includes receiving a throttle signal operable to induce motion via a motor operating as a drive mechanism of the toy vehicle. A transition ... | 05/29/2007 |
| 7210656 | Control, sound, and operating system for model trains A model train operating, sound and control system that provides a user with increased operating realism. A novel remote control communication capability between the user and the model trains. This feature is accomplished by using a handheld remote control on which v... | 05/01/2007 |
| 7161319 | Movable barrier operator having serial data communication A wall control unit for a movable barrier operator sends baseband signals over a wire connection to a head unit of a movable barrier operator to command the movable barrier to perform barrier operator functions. The wall control unit has a wall control unit port for... | 01/09/2007 |
| 7145301 | Battery operated industrial truck A battery operated industrial truck with at least one first motor and at least one second motor, which are operated by one electric control or regulation device for each motor, which are realised such that the motors can be operated as generators in order to feed ba... | 12/05/2006 |
| 7102324 | Fixed speed drive A controller for an electric machine. The controller includes a first voltage input that directly provides a first voltage to the electric machine, a second voltage input configured to receive a second voltage, and an inverter coupled to the second voltage input. Th... | 09/05/2006 |
| 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 |
| 7024859 | Combustion engine acceleration support using an integrated starter/alternator A method of providing acceleration support to a combustion engine using an integrated starter/alternator. The integrated starter/alternator is in rotational combination with the crankshaft and connected to a battery system. The integrated starter/alternator is adapt... | 04/11/2006 |
| 6957124 | System and method for providing power and control signals to an element retrieval device An element handling system utilizes an element retrieval device and a decoder. The element retrieval device is configured to retrieve and transport a movable element in response to control data. The decoder is coupled to the element retrieval device. The decoder is ... | 10/18/2005 |
| 6903522 | Simple load-driving circuit capable of driving plural loads according to given priority order A load-driving circuit capable of driving a plurality of loads based on a priority order endowed therewith is provided. The load-driving circuit comprises a first load 3, a first driving switch 1 for driving the first load, a second load 4, a se... | 06/07/2005 |
| 6891342 | Drive apparatus for PWM control of two inductive loads with reduced generation of electrical noise A drive apparatus for driving two motors by PWM control of respective switching elements connected to the motors, whereby respective control signals are applied to the switching elements such that each commencement of a transition of one of the switching elements fr... | 05/10/2005 |
| 6856106 | H-bridge apparatus and method An apparatus has a first H-bridge having a first motor contact on a shared first side and a second motor contact on a second side. The apparatus also has a half H-bridge having a third motor contact on a third side, wherein the shared first side of the first H-bridg... | 02/15/2005 |
| RE38660 | Sound recording and reproduction system for model train using integrated digital command control A system is provided for recording, storing and reproducing sound for playing back in an environment requiring simulated sounds, voices, and/or sound effects. Sounds are recorded on a chip and played back in an asynchronous manner from the chip as a result of activa... | 11/23/2004 |
| 6815920 | Motor driver and system with phase-spaced redundancy A controller for a motor is provided. The motor includes N redundant M-phase rotor/stator combinations (where N and M are both integers greater than 1). The controller includes N driver circuits each having M outputs. Each of the M outputs of a respective one of the... | 11/09/2004 |
| 6798497 | Lithographic projection apparatus, device manufacturing method, device manufactured thereby, and measurement method A lithographic projection apparatus includes a first object table configured and arranged to hold a patterning structure capable of patterning a projection beam of radiation according to a desired pattern and a second object table configured and arranged to hold a s... | 09/28/2004 |
| 6737778 | Pulley driving system A rotary electromechanical device includes a first motor including a first stator and a first rotor, a second motor including a second stator and a second rotor, and variable power supplies for driving the respective motors independently of each other, The motors ar... | 05/18/2004 |
| 6686712 | Motor network control system A motor network control system is provided which is capable of reducing the wiring length of a power cable and in which upon replacement of a motor or an inverter of a specific motor unit, no adverse influence is exerted on the other motor units. A power ... | 02/03/2004 |
| 6624605 | Method, system and apparatus for opening doors An improved garage door opener is disclosed. The garage door opener has a motor drive unit for opening and closing a garage door. The motor drive unit has a microcontroller. Connected to the motor drive unit is a wall console that resides inside the garag... | 09/23/2003 |
| 6614196 | Vehicle with running mechanism and lifting mechanism A vehicle, in the form of a forklift truck, includes a running mechanism, a work mechanism, a master unit, a slave unit, and a communication interface. The running mechanism is used for running of the vehicle, and the work mechanism is used for a work by ... | 09/02/2003 |
| 6609035 | Adaptive motion controller An adaptive motion controller for driving a servo motor. The adaptive motion controller includes a computer control module which stores information for configuring an amplifier to a specific servo motor. The amplifier has a chip which will configure the a... | 08/19/2003 |
| 6513763 | Mode-conversion method for model railroad decoders A method and apparatus to allow compatible speed operations and physical coupling of decoder equipped locomotives to locomotives without decoders when operating on conventional track power. The improvements utilize mechanisms added to improve decoder faul... | 02/04/2003 |
| 6404150 | Accessory motor drive power supply system for an electric vehicle An electric vehicle accessory motor drive power supply system (40) that utilizes a single power supply design to provide efficient variable speed motor control to both brushless and brush-type DC motors (42,44). The power supply system includes at least o... | 06/11/2002 |
| 6307346 | Induction motor load limiting for power steering applications A power steering system and induction motor load compensation algorithm or processing method for use in a vehicle. The power steering system comprises a power supply, a power steering motor, a steering subsystem, and a power steering controller coupled to... | 10/23/2001 |
| 6281645 | Motor control system and image forming apparatus using the same A motor control system includes a processor having a clock output terminal for outputting clock pulses in desired cycles, a plurality of motors, and a plurality of motor drivers which are provided one for each motor and drive the corresponding motors on t... | 08/28/2001 |
| 6157148 | Contactorless multi-motor controller for battery-powered vehicles A contactorless multi-motor controller is described which comprises a contactorless pump motor starter and a contactorless, reversible traction motor controller. The two controllers are mutually interactive. When the pump motor has ramped up to full volta... | 12/05/2000 |
| 6157159 | Stage system and exposure apparatus using the same A stage system includes a stage movable along a path, a first driving mechanism for accelerating or decelerating the stage on the basis of a resilience force of a resilient member, a first holding mechanism for holding a resilience force being accumulated... | 12/05/2000 |
| 6105696 | Electric vehicle with combined motors of multistep power outputs An energy-saving and high-efficiency electric vehicle which uses a set of accumulator batteries as a power source and is driven by multiple motors of different powers, each motor having its own circuit system and switching device. When greater resistance ... | 08/22/2000 |
| 6028404 | Motor drive circuit system utilizing multiple DC power driving devices switchable between parallel, and series/parallel combinations At least two components that use DC power to drive at least two motors, such as DC armatures, field windings, etc., collectively referred to as DC driving devices, are connected together by switching components which can be operated to selectively connect... | 02/22/2000 |
| 6028403 | Vehicle control apparatus The present invention provides a downsized vehicle control apparatus which is capable of controlling two DC separately excited motors. An armature of a first motor, an armature of a second motor and an armature chopper element for controlling the drive of... | 02/22/2000 |
| 5994861 | Servo system In a servo system having a controller such as a numeric controller for multi-axes control and a plural number of drive-unit-built-in servo motors, a branching circuit (2) is provided between the controller and the drive-unit-built-in servo motors to commu... | 11/30/1999 |
| 5969492 | Instruction broadcast by sensor The network (N) links control modules (CM) of a device (M) on the basis of a common instruction and of a quantity measured by a sensor (S) associated with a measurement module (MM). The instruction is formulated in the measurement module and broadcast ove... | 10/19/1999 |
| 5936312 | Power output apparatus and method of controlling the same The object of the present invention is to carry out control and enable an engine to output a desired power, thereby preventing unexpected charge or discharge of storage battery means. A power output apparatus of the present invention sets energy Pe to be ... | 08/10/1999 |
| 5898280 | DC shunt (or compound) motor pair capable of synchronous operation A pair of DC motors, each having a shunt-connected field winding, are interconnected such that current supplied to the shunt field winding of one of the motors is proportional to the armature current in the other of the two motors when the speed of the ot... | 04/27/1999 |
| 5892338 | Radio frequency remote control for trolling motors A trolling motor system comprises a trolling motor having a propeller rotatably driven thereby. The motor is connected to a rotating tube or column mounted to the boat. A control head is mounted at the upper end of the column. A steering motor in the cont... | 04/06/1999 |
| 5804934 | 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... | 09/08/1998 |
