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Microwave Oven With Removable Storage Cassette in Dashboard of Motor Vehicle
A microwave oven adapted for use within a motor vehicle dashboard area. The microwave oven has a removable storage cassette, and slidable platforms for securing and serving containers of beverages and foods.
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| Number | Title | Issue Date |
| 8164285 | External disturbance detection system and method for two-phase motor control systems A system includes a power control module, a period determination module, and a control module. The power control module controls current through stator coils of a motor to rotate a rotor. The period determination module determines a first length of time between a fi... | 04/24/2012 |
| 8154233 | Sensorless method and related device for starting a three-phase brushless direct-current motor A sensorless method for starting a three-phase brushless direct-current motor includes generating a start-up control signal, a start mode selection signal, and a control signal commutation period; switching to a start mode according to the start mode selection signa... | 04/10/2012 |
| 8054023 | Method and related circuit for driving a sensorless brushless motor A method of driving a sensorless brushless motor in PWM mode includes tristating a winding during a time window for detecting a zero-cross of the back electromotive force induced in the winding by rotation of a rotor, monitoring voltage of the tristated winding duri... | 11/08/2011 |
| 8018189 | Motor drive apparatus The present invention provides a motor drive apparatus which improves a trade-off relation between a stable position detection and noise at its driving. A sensorless drive operation circuit calculates by operation a zero cross point (point p) of a voltage of a posit... | 09/13/2011 |
| 7923954 | Voice-coil motor control with zero-current sensing A circuit for controlling a voice-coil motor (VCM) may incorporate a pulse-width modulation driver to drive the VCM, a zero-current detector to determine whether the current across the VCM is zero, and a Back-EMF voltage detector to measure the voltage across the VC... | 04/12/2011 |
| 7906928 | Feed motor lock detection device A feed motor lock detection device detects a back-electromotive voltage in a feed motor M and checks whether the feed motor M is in a driven state or in a non-driven state based on the level of the back-electromotive voltage. ... | 03/15/2011 |
| 7863842 | Motor spindle control system and method A control system and method for a multi-phase motor substantially reduces or eliminates jitter resulting from drive mismatch by replacing a conventional trapezoidal drive profile with a drive profile that causes the voltage applied across active phases of the motor ... | 01/04/2011 |
| 7737651 | Self starting method and an apparatus for sensorless commutation of brushless DC motors A method and apparatus for electronic control of a direct current motor is disclosed based upon a sensorless commutation technique using voltage vector analysis. A voltage vector is produced by addition of supply phase voltage vectors of energized windings with the ... | 06/15/2010 |
| 7728539 | Methods and apparatuses for measuring VCM BEMF at a VCM control update rate Devices and methods for performing dynamic sampling of a back electromotive force (BEMF) measurement are provided. A device has hardware, including a voice coil motor (VCM) for receiving a VCM command signal and a correction circuit, for obtaining the VCM command si... | 06/01/2010 |
| 7696707 | Semiconductor integrated circuit device In a semiconductor integrated circuit device of the invention, a plurality of external terminals include: a first external terminal (VCC, U, V and W terminals in the FIGURE) receiving a higher voltage than the other external terminals; and a second external terminal... | 04/13/2010 |
| 7683560 | Brushless DC permanent magnet motor A brushless DC motor operated by a microcontroller has a unique pole construction that enables it to reliably start and operate as a unipolar device so that a reduced number of electronic power switches can be used to reduce cost and complexity. The microcontroller ... | 03/23/2010 |
| 7514888 | Method and system for sensorless brushless DC motor control with predictive switch timing A method and system for providing sensorless brushless DC motor control using predictive switch timing requires connecting a stator coil in a bridge configuration, applying a positive excitation voltage across the coil for a predetermined time period, deactivating t... | 04/07/2009 |
| 7492113 | Brushless motor drive control circuit and brushless motor device using the same There is provided a brushless motor drive control circuit capable of assuring an S/N ratio of a predetermined counter electromotive voltage and suppressing lowering of efficiency of a brushless motor at a high-speed rotation. More specifically, the brushless motor d... | 02/17/2009 |
| 7489097 | Sensorless position detection for a brushless direct current motor during inverter standby A method of controlling a brushless direct current motor without a position sensor. The motor includes a plurality phase windings adapted to be energized by an active inverter circuit that synchronously applies drive voltages through a plurality of phases to produce... | 02/10/2009 |
| 7486037 | Control method of sensorless brushless direct current motor Disclosed herein is a control method of a sensorless brushless direct current (BLDC) motor, and more particularly, a drive control method of a concentrated winding BLDC motor which prevents shutdown due to failures of detection of zero cross points (ZCPs). A referen... | 02/03/2009 |
| 7486039 | Method for determining the back electromotive force induced in a voice-coil motor driven in discontinuous mode A method to determine a back electromotive force induced in a coil of a voice-coil motor by its motion. The motor is driven in a discontinuous mode by commanding alternating on-phases and off-phases (tristate). A drive current flowing in the coil or a drive voltage ... | 02/03/2009 |
| 7477029 | Apparatus and method for controlling the number of rotations per unit time of brushless DC motor Disclosed is an apparatus, controlling the number of rotations per minute of a brushless DC motor, the apparatus comprising: a brushless DC motor that rotates at a constant speed when a rotation current is applied, and stops rotating when a stop current is applied; ... | 01/13/2009 |
| 7423396 | Hall sensor alignment for BLDC motor A technique for determining an alignment error of a Hall sensor location in a brushless DC motor drive, by measuring the back EMF waveform, preferably while the motor is coasting. According to the technique, an angular offset is calculated between a selected BEMF wa... | 09/09/2008 |
| 7417400 | Motor controller The present invention is a motor control device comprising a control system, the control system being capable of controlling the motor by PWM and having integration means being capable of outputting an integrated value obtained by integrating a deviation between a r... | 08/26/2008 |
| 7408319 | System and method for regenerative energy control when multiple motors share a common power supply When multiple motors (40) share a common DC power supply (10) via a bus (20), a system and method is provided for managing the effect of regenerative energy caused by a motor. The regenerative energy may be sensed, e.g., by a power electronics c... | 08/05/2008 |
| 7372224 | System and method for determining barrier motor parameters without using sensors A barrier operator comprises a first measuring apparatus for measuring a current used by a direct current (dc) motor to move a barrier and a second measuring apparatus for measuring a generated voltage of the dc motor. A controller is coupled to the first measuring ... | 05/13/2008 |
| 7365505 | Image forming apparatus using noise-resistant motor control device An apparatus for controlling a rotational motion of a motor is disclosed which includes: a signal generator generating a rotational state signal indicative of a rotational state of the motor; and a controller producing a control signal for controlling the rotational... | 04/29/2008 |
| 7341432 | Apparatus and method for controlling operation of reciprocating compressor An apparatus and a method for controlling operation of a reciprocating compressor is capable of reducing a stroke estimation error by eliminating an error that occurs due to resistance and inductance of a compressor motor by estimating a stroke with a counter electr... | 03/11/2008 |
| 7336047 | Motor vehicle steering system A motor vehicle steering system includes a motor driving circuit connected between a power supply and a ground for driving a multi-phase motor, PWM signal generating unit for generating an each-phase PWM signal for controlling a current flowing through each of phase... | 02/26/2008 |
| 7327106 | System and process for utilizing back electromotive force in disk drives A circuit system and process utilizes back electromotive force (BEMF) voltage to assist in safe power down of devices, such as the read/write head in from low factor disk drives or similar devices. The BEMF voltage from a motor device, such as a spindle motor utiliz... | 02/05/2008 |
| 7301298 | Back EMF detection circuit and method for a sensorless brushless DC (BLDC) motor A prior art direct back EMF detection method synchronously sampled motor back EMF during PWM “off” time without the need to sense or re-construct the motor neutral in a sensorless brushless DC (BLDC) motor drive system. Since this direct back EMF sensing scheme ... | 11/27/2007 |
| 7279864 | Control unit for driving a regulating transistor of a fan arrangement A control unit for driving a regulating transistor (2) of a fan arrangement, in which the regulating transistor (2) is connected in series with an electronically commutated fan (1), having control means (5, 6, R1, R2) for th... | 10/09/2007 |
| 7268503 | Vibration linear actuating device, method of driving the same device, and portable information apparatus using the same device A vibration linear actuating device includes a vibrating linear actuator and a driver (52) for driving actuator. Actuator includes mover having permanent magnet magnetized in a radial direction, stator having coil (2) and facing the permanent magnet, a... | 09/11/2007 |
| 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 |
| 7262568 | Brushless DC motor coupled directly to AC source and electric apparatus using the same motor A brushless DC motor is disclosed, in which a commercial AC source is full-wave rectified by a rectifier and then converted into a generally flat and low DC voltage not more than 45V by a DC voltage converter. The low DC voltage is applied in a full-wave driving met... | 08/28/2007 |
| 7235939 | Method for detecting the angular position of a rotor in a brushless electric motor A method for detecting the angular position of a rotor in a brushless electric motor, of the type in which the emission of a polarity signal of the back electromotive force by a detection circuitry associated with the motor, includes the using a bi-directional count... | 06/26/2007 |
| 7230397 | Sensorless motor driving device In a sensorless motor driving device for driving a motor by controlling the energization of the coils of individual phases of the motor according to the result of detecting the position of the rotor of the motor without using an external sensor, before the motor is ... | 06/12/2007 |
| 7227325 | Method and arrangement for protecting a frequency converter A method and an arrangement for protecting a frequency converter in a system comprising a motor and a frequency converter supplying it via a bipolar or multipolar supply connection, the arrangement comprising first connecting means adapted to couple poles of the sup... | 06/05/2007 |
| 7227321 | System and method for detecting back electromotive force with automatic pole calibration A system and method for determining the rotational speed of a motor, such as a three-phase disk drive motor, detects back electromotive force voltage generated during operation of the motor with an automatic pole calibration to minimize or eliminating variations in ... | 06/05/2007 |
| 7215094 | Method for sensing the back electromotive force induced in the winding of a voice coil motor A method for sensing a back electromotive force induced in a winding of a voice coil electro-mechanical actuator controlled in a discontinuous mode by alternating conduction phases to off-phases includes sensing voltage at terminals of the winding during an off-phas... | 05/08/2007 |
| 7208897 | Motion control system for barrier drive A system for operating a barrier system such as a garage door, gate or fence. A DC motor is connected to and operates a barrier drive. A power amplifier is configured to receive power signals from a power supply and to output modulated DC signals to the DC motor. A ... | 04/24/2007 |
| 7199549 | Feedback parameter estimation for electric machines A method and system for estimating a parameter of an electric machine, including a controller and a switching device, the controller executes a parameter estimation process, which is responsive to at least one of: a current value and a torque command and the resulta... | 04/03/2007 |
| 7196863 | Apparatus and method for controlling head unload operation in disk drive An actuator supports a head such that the head is movable in a radial direction of a disk. The actuator has a voice coil motor (VCM) used as a driving source for the actuator. A voice coil motor driver (VCM driver) supplies the VCM with a driving current for driving... | 03/27/2007 |
| 7188701 | Velocity compensation control for electric steering systems Disclosed herein is a method as well as a system for controlling an electric power steering system. The method includes: receiving a torque signal from a torque sensor responsive to a torque applied to a handwheel; obtaining a motor velocity signal, the motor veloci... | 03/13/2007 |
| 7166980 | Methods and apparatus for monitoring a brushed permanent magnet motor using back-emf measurements Techniques sense a back-emf voltage from a brushed permanent magnet motor. Such techniques can be used for a variety of purposes, such as to estimate the current that is being applied to the motor, to estimate the motor's velocity, position, torque, and the like. On... | 01/23/2007 |
