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    • 2. 发明专利
    • Sensorless drive device and control method for brushless dc motor, and program
    • 无刷直流电动机的无传动驱动装置及控制方法及程序
    • JP2014131453A
    • 2014-07-10
    • JP2012288946
    • 2012-12-28
    • Mikuni Corp株式会社ミクニ
    • WATANABE KENICHIKOBAYASHI NAOKIFUJIWARA KAZUHIRODOI TAKASHI
    • H02P6/18H02P6/08
    • H02P6/12H02P6/085H02P6/18H02P6/182H02P6/21
    • PROBLEM TO BE SOLVED: To reduce a noise by suppressing vibration caused by rotation fluctuation to make a current for rotating a motor approach that in a synchronized state so that only a current required for maintaining the rotation is consumed.SOLUTION: Drive means drives a sensorless brushless DC motor by switching an energization pattern for deciding a rotation position of a rotor of the sensorless brushless DC motor at a constant cycle. Detection means detects a zero-cross signal that indicates switching of a phase of the rotor. Calculation means calculates a synchronization determination rate that indicates a proportion of the number of detected zero-cross signals. Pulse width control means controls a pulse width of a PWM drive Duty in the drive means so that the calculated synchronization determination rate is in a target range.
    • 要解决的问题:为了通过抑制由旋转波动引起的振动来降低噪声,使得用于使电机旋转的电流进入同步状态,使得仅维持旋转所需的电流被消耗。解决方案:驱动装置驱动无传感器 通过切换用于确定无传感器无刷直流电动机的转子的旋转位置的通电模式,以恒定的周期进行切换。 检测装置检测表示转子相位切换的零交叉信号。 计算装置计算指示检测到的过零信号数目的比例的同步确定速率。 脉冲宽度控制装置控制驱动装置中的PWM驱动占空比的脉冲宽度,使计算出的同步判定率在目标范围内。
    • 5. 发明专利
    • Motor control device
    • 电机控制装置
    • JP2012253971A
    • 2012-12-20
    • JP2011126359
    • 2011-06-06
    • Aisin Seiki Co Ltdアイシン精機株式会社
    • MINATO YOSHIHIKO
    • H02P6/20
    • H02P6/205F04B15/02F04B17/03F04B49/06F04B2205/10F04B2205/11H02P6/15H02P6/18H02P6/21
    • PROBLEM TO BE SOLVED: To provide a motor control device which can promptly start a motor.SOLUTION: A motor control device 100 includes: a control condition storage part 3 which stores at least either one of a control condition defined by voltage supplied to a three-phase motor 10 or a control condition defined by a relationship between the voltage supplied to the three-phase motor 10 and a frequency of a PWM signal for controlling the three-phase motor 10; a control condition extracting part 3 extracting the control condition from the control condition storage part 3, on the basis of a temperature of viscous fluid made to flow by a pump 30 using the three-phase motor 10 as a power source; and a PWM control part 1 controlling transistors Q1-Q6 of an inverter 11 by using the PWM signal on the basis of the extracted control condition, when the three-phase motor 10 is started.
    • 要解决的问题:提供可以及时启动电动机的电动机控制装置。 电动机控制装置100包括:控制条件存储部3,其存储由提供给三相电动机10的电压定义的控制条件或由电压提供的电压所限定的控制条件中的至少一个 提供给三相电动机10和用于控制三相电动机10的PWM信号的频率; 基于使用三相电动机10作为动力源由泵30流动的粘性流体的温度,控制条件提取部3从控制条件存储部3提取控制条件; 以及PWM控制部1,当三相电动机10起动时,通过使用基于所提取的控制条件的PWM信号来控制逆变器11的晶体管Q1-Q6。 版权所有(C)2013,JPO&INPIT
    • 10. 发明专利
    • Synchronous motor drive system
    • 同步电机驱动系统
    • JP2003061386A
    • 2003-02-28
    • JP2001241858
    • 2001-08-09
    • Hitachi Ltd株式会社日立製作所
    • IWAMICHI YOSHINAOENDO TSUNEHIROSAKAMOTO KIYOSHITAKAKURA YUHACHI
    • H02P6/18H02P6/00H02P6/20H02P21/00H02P21/14H02P27/04
    • H02P21/24H02P6/21H02P6/34
    • PROBLEM TO BE SOLVED: To provide a synchronous motor drive system comprising means for realizing a vector control type sensorless system by controlling from a low speed region to a high speed region through a continuous method while stabilizing the control system without superposing harmonics or increasing noise. SOLUTION: Assuming the inductance of a synchronous motor 5 on the d-pole axis is Ld, the inductance on the q-axis orthogonal to the d-pole axis is Lq, the power generation constant of the motor is Ke, the current command value on the d-axis is Id*, the current command value on the q-axis is Iq*, the current detection value on the imaginary dc axis in control is Idc, and the current detection value on the imaginary qc axis orthogonal to the imaginary dc axis is Iqc, an axial error operating means 14 estimates the axial error Δθof the d-q axes and dc-qc axes using the Ld, Lq, Ke, Id*, Iq*, Idc and Iqc over the entire r.p.m. range other than a point where the r.p.m. command of the synchronous motor 5 is zero. Sensorless positional control can be realized over a wide range from low speed to high speed regardless of presence/absence of salient poles.
    • 要解决的问题:提供一种同步电动机驱动系统,其包括用于通过连续方法通过从低速区域到高速区域的控制来实现矢量控制型无传感器系统的装置,同时稳定控制系统而不叠加谐波或增加噪声。 解决方案:假设d极轴上的同步电动机5的电感为Ld,与d极轴正交的q轴上的电感为Lq,电动机的发电常数为Ke,电流指令值 在d轴上为Id *,q轴上的电流指令值为Iq *,控制中虚拟直流轴上的电流检测值为Idc,虚拟qc轴上的电流检测值与虚拟 dc轴为Iqc时,轴向误差运算装置14使用Ld,Lq,Ke,Id *,Iq *,Idc和Iqc在整个转速下估计dq轴和dc-qc轴的轴向误差Δθ 范围除了r.p.m. 同步电动机5的指令为零。 无传感器位置控制可以在低速到高速的宽范围内实现,无论是否存在凸极。