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JP4412839B2 |
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JP2010028996A |
To provide a reciprocal mechanism, a control method therefor, a ticket cutting device equipped with the reciprocal mechanism, and a sheet processing device, for stopping a movable member driven with a DC motor at a target position while ...
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JP2010028878A |
To provide a motor controller that controls a current even at a large current, and is compact at a low cost.The motor controller controls a motor with a brush that is driven so that unidirectional load may be larger than reverse rotating...
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JP2010029052A |
To expand an interval of PWM (pulse-width modulation) in a DC-motor controlling process and a region giving linearity to a motor current.The DC-motor control is performed by means of PWM repeating the normal/reverse rotation of the motor...
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JP4407033B2 |
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JP2010022135A |
To provide a cooling device improving use efficiency of electric energy.The cooling device 10 is provided with a motor M rotating a cooling fan, a plurality of electric double layer capacitors C1, C2, C3 and C4, switches S1 and S2 switch...
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JP4403804B2 |
A motor control apparatus, for controlling an electric motor to move a control object from a current position to a target position, estimates a condition of a load currently being applied to the motor (e.g., whether it is a positive or a...
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JP4405163B2 |
The method involves selectively connecting each of two outputs of the control circuit to one of several potentials with controllable switching arrangements and forming a drive voltage for a component from a difference between the potenti...
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JP4400731B2 |
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JP2010011701A |
To provide a technology for precisely measuring speed with high time resolution.In a multifunction machine 1, an edge detection part 151 detects a rising edge and a falling edge of A-phase signal and B-phase signal of an encoder 90, and ...
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JP4395956B2 |
A rotational pulse signal generating circuit (3) for a commutator DC motor (11) is made up of a filter device (30) for eliminating noise from the motor, a cutoff frequency of the filter device being variable depending on an external sign...
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JP2010004605A |
To provide a controller for a DC motor, capable of separately controlling the armature current and field current of the DC motor and also of uniformizing the heating of an armature winding and field winding.In the controller 1 for the DC...
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JP4395441B2 |
The invention relates to Method to detect a sluggishness or the blocking of an electric drive ( 3 ), which is triggered via a power semiconductor component ( 7 ). The electric drive ( 3 ) can be operated in both a partial load range (PWM...
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JP4393123B2 |
The method involves driving the drive via a drive module that drives power switches connected to an electronic circuit board with a pulse width modulation signal (27) by changing the instantaneous duty cycle to modified a maximum duty cy...
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JP2009545946A |
A method, apparatus or computer program implements an overload prevention approach involving monitoring a speed of a motor; detecting an overload condition of the motor based on the monitored speed; and controlling an operation of the mo...
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JP4388517B2 |
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JP4387423B2 |
An apparatus to control rotation of a driven member (7), includes a rotation member (92) rotatably supported, a driving unit (8) to rotate the rotation member, a potentiometer (80) to detect an angular position of the rotation member in ...
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JP4387051B2 |
To provide an electric power steering device reducing a deterioration of steering feeling from an electric current vibration in a steering wheel holding condition and a noise from a mechanical resonance in a high speed operation of the s...
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JP4382768B2 |
To provide an electric power steering device that is capable of detecting a DC motor current while including even its direction without increasing a circuit scale while reducing a power loss of an H-bridge circuit. The electric power ste...
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JP4381501B2 |
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JP4380765B2 |
A computer computes the permissible energizing period of a motor based on the motor initial temperature which is computed based on an output signal from a coolant temperature sensor. As the motor initial temperature is lower, the permiss...
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JP4379713B2 |
To provide motor controlling equipment having the mounting structure of a capacitor which can simply and exactly fix the capacitor in which a terminal is soldered to a substrate, and improve vibration resistance. In the motor controlling...
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JP4380247B2 |
An electric drive control apparatus for an electric machine, includes a controller that computes an instruction value based on an electric machine rotational speed and a target electric machine torque that represents a target value of an...
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JP2009284592A |
To prevent a larger current more than necessary from flowing to a load even if a failure occurs in a transistor for current detection, in a load controller which detects a current by using a current mirror circuit, and controls the opera...
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JP4375920B2 |
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JP4376449B2 |
To reduce transmission loss of a power transmission device including a speed change gear and improve fuel consumption by heating oil of the speed change gear easily by changing only control without adding a special system for heating the...
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JP4375479B2 |
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JP4378399B2 |
A drawer-type cooking device and a method for controlling opening and closing of a door thereof, in which an opening/closing direction and an absolute position of a door by a manual opening/closing operation by a user can be detected wit...
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JP2009278726A |
To provide a motor controller which is miniaturized in device scale while suppressing manufacturing cost in a state where normal control operation is secured.The motor controller has: a closed circuit formed so as to include a serial con...
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JP2009278724A |
To provide a miniaturized motor controller having high practicability which can achieve proper control operation including a fail safe function by cooperating with an ECU.The motor controller CTL has: a closed circuit including a DC moto...
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JP2009278725A |
To provide a motor controller capable of reducing noise at the minimum.The motor controller CTL has a closed circuit configured by including a serial connection of a DC motor M, a current smoothing coil L3 and a diode D6. The motor contr...
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JP2009278803A |
To provide a DC motor malfunction detection method for preventing the DC motor from being smoked and burned even at serious faults such as failure, disconnection and ground fault in a switching element, a restricted state of the DC motor...
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JP4370609B2 |
A process for adjusting a motor vehicle part between at least two positions and a drive device for executing this process. The motor vehicle part is driven by an electric motor. A pulse signal is generated according to the rotary motion ...
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JP4370123B2 |
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JP4370763B2 |
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JP4372797B2 |
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JP2009273238A |
To suppress heat and noise from a semiconductor device in PWM control and to reduce the size of an apparatus.A temperature sensor 30 detects temperatures of the semiconductor device 3. When a temperature of the semiconductor device 3 is ...
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JP4365132B2 |
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JP4367620B2 |
A failure monitor designed to monitor a failure in operation of a motor drive control system. The system works to drive a motor-driven member through an output shaft and an electric motor and includes an output shaft angular position sen...
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JP2009268170A |
To set an effective value to zero when the average value of current passing through an armature coil of a DC brush motor is zero.The driving signal generator 4 of a motor driving device includes a first driving signal generation circuit ...
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JP2009268335A |
To provide a motor device capable of reducing the number of components to miniaturize a circuit and detecting drive status of a motor.The motor device 1 includes: a motor 2; a CPU 7 for controlling normal/inverse rotation of the motor 2;...
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JP4362815B2 |
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JP4363111B2 |
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JP2009261211A |
To provide a motor controller capable of performing motor control such as calorific value restriction based on blind figures as the calculated blind figures are accurate, and a printer and a drive control method.The system includes a mot...
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JP2009261090A |
To provide a low-cost motor controller which detects the motor current with high accuracy.A motor controller controls the motor current in an H bridge circuit which switches the rotational direction of a motor, between the forward direct...
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JP4357472B2 |
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JP4356295B2 |
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JP4356426B2 |
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JP4359310B2 |
The invention relates to an arrangement for isolating supply current from control devices, which satisfies higher safety standards while, however, being easy to operate. To this end, the inventive arrangement comprises a device for isola...
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JP2009254046A |
To provide a motor controller which diagnoses a current detection circuit without feeding a current to a motor.An MPU 60 rotates a motor 2 forward or reversely by turning the switching elements 20, 22, 30 and 32 on/off. When a current fl...
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