| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 318066000 | Running-speed control | 11 |
| 20090009108 | MOTOR DRIVER CIRCUIT, CONTROL METHOD THEREOF, AND ELECTRONIC APPARATUS - A motor driver circuit comprising a diving circuit for driving at least one motor, a plurality of DC/DC converters, and a stopping circuit for stopping the DC/DC converter if failure is detected in an output of the DC/DC converter, wherein a first signal is outputted when a specific DC/DC converter of the plurality of DC/DC converters is stopped by the stopping circuit, and a specific DC/DC converter is recovered when a second signal is inputted. A CPU of an apparatus incorporated with the motor driver circuit is informed that the specific DC/DC converter has been stopped by the stopping circuit. Moreover, the stopped DC/DC converter can be recovered without need for turning off a power supply of the motor driver circuit itself. | 01-08-2009 |
| 20090134820 | Drive unit for vehicle - A vehicle drive unit that includes a first rotary machine; an electric differential; a second rotary machine that transmits power from the electric differential to wheels via a first power transmission interrupt mechanism; a second power transmission interrupt mechanism that connects the second rotary machine to an input member of the electric differential; and a control device. The control device switches between a first operation mode, in which the first power interruption mechanism is in a power transmitting state and the second power interruption mechanism is in a power disconnected state, and a second operation mode, in which the first power interruption mechanism in a power disconnected state and the second power interruption mechanism in a power transmitting state. To avoid generation of a shock, the operation mode is switched when the torque of the second rotary machine is nearly 0. | 05-28-2009 |
| 20110031906 | MOTOR DRIVING DEVICE, INTEGRATED CIRCUIT DEVICE, MOTOR DEVICE, AND MOTOR DRIVING SYSTEM - A motor driving device according to the present invention includes: a serial communication unit that conducts communication through a serial communication bus, the serial communication bus including a serial data line through which serial data is transmitted and a clock line through which a clock signal is transmitted; and a drive control unit that controls a driving operation of a motor. The motor driving device is configured such that a clock signal received from the serial communication bus is used as a reference clock signal of the drive control unit. | 02-10-2011 |
| 20110204829 | BROAD TURNDOWN RATIO TRACTION DRIVE - A traction drive system comprising a plurality of electric motors selectably connected to a main shaft by engagement devices, each motor or combination of motors provides distinct performance characteristics along a broad spectrum of performance characteristics; and a method of managing a traction drive system including sensing physical parameters of the fraction drive system, selecting an electric motor having well-suited performance profile based on pre-selected criteria against which the sensed parameter is compared, and engaging one or more of the corresponding motors to the main shaft. | 08-25-2011 |
| 318067000 | Diverse speeds for different motors | 3 |
| 20110057585 | SYSTEM FOR REALIZING ROTOR VARIABLE FREQUENCY SPEED CONTROL ASYNCHRONOUSLY AND SIMULTANEOUSLY BY DRIVING FOUR MOTORS VIA ONE INVERTER - The present invention discloses a system for realizing rotor variable frequency speed control asynchronously, which drives a plural of motors via one inverter. This system is consisted of a motor group, a rectifier group, a current limiter group, a chopper group, an isolator group, an active inverter, an A/D converter group, a signal processor group, a current detector group and a voltage detector group. By employing inversion control theory and CPU control technology, a plural of motors are controlled on line, the voltage output by one inverter is used as the additional inverse electromotive force of each motor, and each chopper is effectively turned on and turned off via a PWM signal which is output by each driver, so that four jobs of a crane, lifting, luffing, revolving and walking, can be realized. By the present invention, the circuit is simplified, the size is reduced, the cost is lowered, and the reliability is improved. When the crane rises, redundant electric energy will always be fed back to the motor via the same inverter, and when the crane falls, the motor will be in generator state, and the electric energy generated will be again fed back to the motor or the electric network via the same inverter, thereby realizing energy recovery and saving the energy source. | 03-10-2011 |
| 20140300297 | MULTIPLEXED MOTOR CONTROLLER - A system, multiplexed controller, and a method of controlling a plurality of motors is described. The system includes a plurality of motors, at least two of the motors requiring a variable-frequency source or being a multi-speed motor. The multiplexed controller of the system is configured to control operation of the plurality of motors, the controller directly communicating with each of the plurality of motors. | 10-09-2014 |
| 20170237370 | Motor Control Topology for Airborne Power Generation and Systems Using Same | 08-17-2017 |
| 318068000 | Relative motor speed control | 3 |
| 20100039053 | TORQUE CONTROL DEVICE AND METHOD FOR CONTROLLING THE SAME - A torque control device controlling torque of first and second mechanical units connected coaxially to each other through connecting members includes a controller generating first and second references from a command from a host system, first and second motors respectively driving the first and second mechanical units, first and second motor control units respectively controlling the first and second motors on the basis of the first and second references. The first and second references synchronously accelerate the first and second motors to first rotational speed, then increase rotational speed of the second motor according to a speed profile to produce torsional torque in the connecting members, decelerate the second motor to the first rotational speed after the torsional torque reaches a predetermined value, and synchronously decelerate and stop the first and second motors after a predetermined time period elapses. | 02-18-2010 |
| 20110074317 | Method and Arrangement for Fan Control - The invention relates to a method for controlling a number of fans ( | 03-31-2011 |
| 318079000 | Control of both armature (or primary) and field (or secondary) circuits | 1 |
| 20130127378 | ROTATING ELECTROMECHANICAL CONVERTER - Starting from the known rotating electromechanical converter comprising a stator with magnetic circuits and polyphase energising windings, a first, inner, rotor with magnetic circuits and polyphase energising windings, and a second (inter)rotor between this first rotor and the stator, provided with permanent magnetic members for co-operation with the magnetic circuit of at least the stator, the invention proposes to provide means for modifying the state of magnetisation of at least a part of the respective areas of the second rotor which each lie between two successive permanent magnetic members. | 05-23-2013 |
| 318082000 | Armature or primary circuit control | 1 |
| 20110018474 | ELECTROMECHANICAL SYSTEM HAVING A VARIABLE FREQUENCY DRIVE POWER SUPPLY FOR 3-PHASE AND 1-PHASE MOTORS - An electromechanical system is configured with a variable frequency drive power supply which provides power to both a three-phase motor and to a single-phase motor. In some embodiments, the variable frequency drive also powers one or more additional motors. | 01-27-2011 |
