Abstract: A control support apparatus communicably connected to at least one predetermined device includes a managing unit configured to manage the predetermined device in association with internal information of the predetermined device and manage the predetermined device in association with external information disclosed for the predetermined device, and an analyzing unit configured to generate analysis information by analyzing an operation state of a target device of the predetermined device based on internal information related to the target device and external information corresponding to the target device.

Abstract: The motor controller includes: a current detection section that detects a current between a battery and an inverter circuit generating a voltage applied to a coil of a motor; an overload determination value output section that outputs an overload determination value used to determine whether or not the motor is overloaded; an overload determination section that compares a current value detected by the current detection section against the overload determination value, and that determines the motor to be overloaded in a case in which the current value detected by the current detection section is the overload determination value or greater; and a forced 500 rpm instruction section that controls the motor rotation speed to 500 rpm, this being a specific speed, in a case in which the overload determination section has determined the motor to be overloaded.

Abstract: The motor controller includes: a current detection section that detects a current between a battery and an inverter circuit generating a voltage applied to a coil of a motor; an overload determination value output section that outputs an overload determination value used to determine whether or not the motor is overloaded; an overload determination section that compares a current value detected by the current detection section against the overload determination value, and that determines the motor to be overloaded in a case in which the current value detected by the current detection section is the overload determination value or greater; and a forced 500 rpm instruction section that controls the motor rotation speed to 500 rpm, this being a specific speed, in a case in which the overload determination section has determined the motor to be overloaded.

Abstract: A brushless motor controller is disclosed. The brushless motor controller includes a control unit and a drive timing generation unit. The control unit detects a load state of the motor. The drive timing generation unit generates a normal energizing timing determined by the rotational position of the rotor. Also, the drive timing generation unit generates an advancing angle energizing timing determined by the rotational position of the rotor and advanced by a predetermined amount from the normal energizing timing, generates a delay amount that changes in correspondence with the detected load state of the motor and the rotational speed of the rotor, and generates a final advancing angle energizing timing delayed by the delay amount from the advancing angle energizing timing.

Abstract: A voltage application unit causes switching elements to apply voltage to flow an electric current into corresponding windings to generate a revolving magnetic field. A period derivation unit derives an energization period of the windings. A signal generation unit generates a PWM signal for causing the voltage application unit to activate and deactivate the switching elements, such that a duty ratio decreases gradually in a predetermined time period subsequent to the derived energization period. A period specifying unit specifies a detection period of an electric current, which is supplied from the switching elements presently switched and deactivated, by a predetermined time period between an edge, which is caused when the PWM signal changes in level to deactivate the switching elements, and a time point in advance of the edge in the energization period.

Abstract: A power supply control device turns off energization of coils from a power supply device when a rotational speed of a motor reaches 500 rpm. After elapsing of one electrical cycle from the time of starting the turning off of the energization, a comparator of a correction device outputs a comparator signal, which is obtained by comparing a voltage of a neutral point of the coils and an induced voltage of the coil. An EX-OR circuit outputs an EX-OR signal, which is an exclusive OR value of the comparator signal and an output signal of a Hall sensor. A sensing unit obtains an electrical angle of a period, during which the EX-OR signal is in a H-level. A difference between the obtained electrical angle and a standard electrical angle of 30 degrees is stored as a correction data value. Thereafter, energization of the coils is restarted.

Abstract: A slope counter starts countdown at timing of changing an output voltage of an FET to zero. A controller executes a nonsymmetrical energization control operation to control a PWM generator such that the PWM generator generates a PWM signal based on a count value of the slope counter and outputs the generated PWM signal to the FET. The countdown of the slope counter is terminated when a predetermined time period elapses or when a time period corresponding to an electrical angle of 40 degrees elapses before the elapsing of the predetermined period. Also, at this time, the controller terminates the nonsymmetrical energization control operation.

Abstract: A voltage application unit causes switching elements to apply voltage to flow an electric current into corresponding windings to generate a revolving magnetic field. A period derivation unit derives an energization period of the windings. A signal generation unit generates a PWM signal for causing the voltage application unit to activate and deactivate the switching elements, such that a duty ratio decreases gradually in a predetermined time period subsequent to the derived energization period. A period specifying unit specifies a detection period of an electric current, which is supplied from the switching elements presently switched and deactivated, by a predetermined time period between an edge, which is caused when the PWM signal changes in level to deactivate the switching elements, and a time point in advance of the edge in the energization period.

Abstract: A first duty ratio of a drive command signal is computed by comparing a level of the drive command signal with a first threshold value at a motor controller of a blower motor apparatus. A second duty ratio of the drive command signal is computed by comparing the level of the drive command signal with a second threshold value at the motor controller. A control signal is generated based on the first duty ratio and the second duty ratio in the motor controller and is used to drive a blower motor of the blower motor apparatus.

Abstract: A brushless motor controller is disclosed. The brushless motor controller includes a control unit and a drive timing generation unit. The control unit detects a load state of the motor. The drive timing generation unit generates a normal energizing timing determined by the rotational position of the rotor. Also, the drive timing generation unit generates an advancing angle energizing timing determined by the rotational position of the rotor and advanced by a predetermined amount from the normal energizing timing, generates a delay amount that changes in correspondence with the detected load state of the motor and the rotational speed of the rotor, and generates a final advancing angle energizing timing delayed by the delay amount from the advancing angle energizing timing.

Abstract: A power supply control device turns off energization of coils from a power supply device when a rotational speed of a motor reaches 500 rpm. After elapsing of one electrical cycle from the time of starting the turning off of the energization, a comparator of a correction device outputs a comparator signal, which is obtained by comparing a voltage of a neutral point of the coils and an induced voltage of the coil. An EX-OR circuit outputs an EX-OR signal, which is an exclusive OR value of the comparator signal and an output signal of a Hall sensor. A sensing unit obtains an electrical angle of a period, during which the EX-OR signal is in a H-level. A difference between the obtained electrical angle and a standard electrical angle of 30 degrees is stored as a correction data value. Thereafter, energization of the coils is restarted.

Abstract: A slope counter starts countdown at timing of changing an output voltage of an FET to zero. A controller executes a nonsymmetrical energization control operation to control a PWM generator such that the PWM generator generates a PWM signal based on a count value of the slope counter and outputs the generated PWM signal to the FET. The countdown of the slope counter is terminated when a predetermined time period elapses or when a time period corresponding to an electrical angle of 40 degrees elapses before the elapsing of the predetermined period. Also, at this time, the controller terminates the nonsymmetrical energization control operation.

Abstract: A first duty ratio of a drive command signal is computed by comparing a level of the drive command signal with a first threshold value at a motor controller of a blower motor apparatus. A second duty ratio of the drive command signal is computed by comparing the level of the drive command signal with a second threshold value at the motor controller. A control signal is generated based on the first duty ratio and the second duty ratio in the motor controller and is used to drive a blower motor of the blower motor apparatus.

Abstract: A brushless motor controller that controls a brushless motor by determining an energizing timing of a three-phase stator coil based on the rotational position and speed of a rotor. The controller includes a normal timing generation unit, an advancing timing generation unit, and a control switching unit. The normal timing generation unit generates a normal energizing timing. The advancing angle timing generation unit generates an advancing angle energizing timing advanced by a predetermined amount from the normal energizing timing and a final advancing angle energizing timing delayed by a delay amount from the advancing angle energizing timing. The control switching unit switches rotation control of the motor between a first rotation control executed in accordance with the normal energizing timing and a second rotation control executed in accordance with the final advancing angle energizing timing.

Abstract: A control circuit device for a motor is provided with a circuit board which has an electrically-conductive terminal for electrically connecting the motor with an exterior connector, a heat radiating unit which is connected with the circuit board to radiate heat generated by the circuit board. The heat radiating unit has a convex member at a surface thereof of the side where the electrically conductive terminal is arranged. The electrically conductive terminal is integrally formed with a concave member for being engaged with the convex member. The convex member is engaged with the concave member. Thus, a heat sink can be readily mounted without increasing the cost.

Abstract: A motor control device selectively turns on or off a drive transistor in-accordance with a PWM control signal Sp, such that a drive current Im supplied to a motor is adjusted. The device also samples and holds a motor current Sm for obtaining a motor current value Ih. With reference to the motor current value Ih, the device protects the motor from an overcurrent. Sampling and holding of the motor current Sm is performed for a sampling and holding time Ts. The sampling and holding time Ts corresponds to a time period between a first point in time when the level of the PWM control signal Sp is switched for turning off the drive transistor and a second point in time that precedes the first point in time by a predetermined period. As a result, the motor current value Ih is detected with high accuracy.

Abstract: A control circuit device for a motor is provided with a circuit board which has an electrically-conductive terminal for electrically connecting the motor with an exterior connector, a heat radiating unit which is connected with the circuit board to radiate heat generated by the circuit board. The heat radiating unit has a convex member at a surface thereof of the side where the electrically conductive terminal is arranged. The electrically conductive terminal is integrally formed with a concave member for being engaged with the convex member. The convex member is engaged with the concave member. Thus, a heat sink can be readily mounted without increasing the cost.

Abstract: A motor control device selectively turns on or off a drive transistor in-accordance with a PWM control signal Sp, such that a drive current Im supplied to a motor is adjusted. The device also samples and holds a motor current Sm for obtaining a motor current value Ih. With reference to the motor current value Ih, the device protects the motor from an overcurrent. Sampling and holding of the motor current Sm is performed for a sampling and holding time Ts. The sampling and holding time Ts corresponds to a time period between a first point in time when the level of the PWM control signal Sp is switched for turning off the drive transistor and a second point in time that precedes the first point in time by a predetermined period. As a result, the motor current value Ih is detected with high accuracy.

Abstract: A brush structure for a motor is provided for realizing an equalization of wear of brushes without causing an early wear of a specific brush while not necessitating a complicated conduction controlling device. A first brush, which is one of four brushes, conducted at both Lo mode and Me mode is formed to have a larger sliding contact area for contacting a commutator slidably compared with a sliding contact area of a second brush which is conducted at Hi mode only. Current density in the first brush at Lo mode and Me mode becomes smaller than current density at Hi mode.