Abstract: A power supply control circuit of a three-phase brushless DC (BLDC) motor is provided. The control circuit includes means for calculating the DC current consumption IS based on a phase current signal Ishunt of the BLDC motor, the means including a shunt resistor Rshunt, an amplifier and a low pass filter. The amplifier is configured to amplify a measured voltage Vshunt that corresponds to the current Ishunt across the resistor Rshunt and perform an offset correction. The low pass filter is configured to provide a filtered voltage VO of the voltage Vshunt. The DC current IS is calculated based on the voltage VO.

Abstract: Precast wall systems and methods for constructing a high-rise building using the precast wall system is disclosed. In one embodiment, the system includes a plurality of interconnected precast panels, each having a top end plate, a bottom end plate, a plurality of vertical bars disposed between the end plates and a cementitious material encasing the vertical bars and defining a plurality of sides of the respective panel. A first of the precast panels has a first column member half defining a right side of the first panel, a second of the precast panels has a second column member half defining a left side of the second panel such that, when the right side of the first precast panel and the left side of the second precast panel are disposed horizontally adjacent to each other, the first column member half and the second column member half collectively form a column member.

Abstract: A method for operating a brushed direct current electric motor may include receiving an input signal, determining an output duty cycle depending on the received input signal, determining an output frequency depending on the determined output duty cycle, generating a pulse width modulated output signal with the determined output duty cycle and the determined output frequency, and driving the brushed direct current electric motor via the generated pulse width modulated output signal. The input signal may indicate at least one of (i) a requested rotational speed of the brushed direct current electric motor and (ii) a requested output motor voltage to drive the brushed direct current electric motor.

Abstract: A method for operating a brushed direct current electric motor may include receiving an input signal, determining an output duty cycle depending on the received input signal, determining an output frequency depending on the determined output duty cycle, generating a pulse width modulated output signal with the determined output duty cycle and the determined output frequency, and driving the brushed direct current electric motor via the generated pulse width modulated output signal. The input signal may indicate at least one of (i) a requested rotational speed of the brushed direct current electric motor and (ii) a requested output motor voltage to drive the brushed direct current electric motor.

Abstract: A power supply control circuit of a three-phase brushless DC (BLDC) motor is provided. The control circuit includes means for calculating the DC current consumption IS based on a phase current signal Ishunt of the BLDC motor, the means including a shunt resistor Rshunt, an amplifier and a low pass filter. The amplifier is configured to amplify a measured voltage Vshunt that corresponds to the current Ishunt across the resistor Rshunt and perform an offset correction. The low pass filter is configured to provide a filtered voltage VO of the voltage Vshunt. The DC current IS is calculated based on the voltage VO.

Abstract: Precast wall systems and methods for constructing a high-rise building using the precast wall system is disclosed. In one embodiment, the system includes a plurality of interconnected precast panels, each having a top end plate, a bottom end plate, a plurality of vertical bars disposed between the end plates and a cementitious material encasing the vertical bars and defining a plurality of sides of the respective panel. A first of the precast panels has a first column member half defining a right side of the first panel, a second of the precast panels has a second column member half defining a left side of the second panel such that, when the right side of the first precast panel and the left side of the second precast panel are disposed horizontally adjacent to each other, the first column member half and the second column member half collectively form a column member.

Abstract: Precast wall systems and methods for constructing a high-rise building using the precast wall system is disclosed. In one embodiment, the system includes a plurality of interconnected precast panels, each having a top end plate, a bottom end plate, a plurality of vertical bars disposed between the end plates and a cementitious material encasing the vertical bars and defining a plurality of sides of the respective panel. A first of the precast panels has a first column member half defining a right side of the first panel, a second of the precast panels has a second column member half defining a left side of the second panel such that, when the right side of the first precast panel and the left side of the second precast panel are disposed horizontally adjacent to each other, the first column member half and the second column member half collectively form a column member.

Abstract: Precast wall systems and methods for constructing a high-rise building using the precast wall system is disclosed. In one embodiment, the system includes a plurality of interconnected precast panels, each having a top end plate, a bottom end plate, a plurality of vertical bars disposed between the end plates and a cementitious material encasing the vertical bars and defining a plurality of sides of the respective panel. A first of the precast panels has a first column member half defining a right side of the first panel, a second of the precast panels has a second column member half defining a left side of the second panel such that, when the right side of the first precast panel and the left side of the second precast panel are disposed horizontally adjacent to each other, the first column member half and the second column member half collectively form a column member.

Abstract: A precast wall system and a method for constructing a high-rise building using the precast wall system is disclosed. The system includes a plurality of interconnected precast panels. Each precast panel has a top end plate, a bottom end plate, a plurality of vertical bars disposed between and attached to the end plates and a cementitious material encasing the vertical bars and defining a plurality of sides of the respective panel. A first group of the interconnected precast panels are arranged vertically on a second group of the interconnected precast panels and the top end plate of each panel corresponding the first group is connected to the bottom end plate of a respective one of the panels corresponding to the second group. Methods for horizontally and vertically connecting the precast panels to each other are also disclosed.

Abstract: Precast wall systems and methods for constructing a high-rise building using the precast wall system is disclosed. In one embodiment, the system includes a plurality of interconnected precast panels, each having a top end plate, a bottom end plate, a plurality of vertical bars disposed between the end plates and a cementitious material encasing the vertical bars and defining a plurality of sides of the respective panel. A first of the precast panels has a first column member half defining a right side of the first panel, a second of the precast panels has a second column member half defining a left side of the second panel such that, when the right side of the first precast panel and the left side of the second precast panel are disposed horizontally adjacent to each other, the first column member half and the second column member half collectively form a column member.

Abstract: A precast wall system and a method for constructing a high-rise building using the precast wall system is disclosed. The system includes a plurality of interconnected precast panels. Each precast panel has a top end plate, a bottom end plate, a plurality of vertical bars disposed between and attached to the end plates and a cementitious material encasing the vertical bars and defining a plurality of sides of the respective panel. A first group of the interconnected precast panels are arranged vertically on a second group of the interconnected precast panels and the top end plate of each panel corresponding the first group is connected to the bottom end plate of a respective one of the panels corresponding to the second group. Methods for horizontally and vertically connecting the precast panels to each other are also disclosed.