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公开(公告)号：US5856733A
公开(公告)日：1999-01-05
申请号：US738530
申请日：1996-10-28
CPC分类号： G05B19/231 , G05B2219/41244 , G05B2219/41245 , G05B2219/43194
摘要： The upper limit value and lower limit value of a control target value are alternately supplied to a single D/A converter in synchronism with a clock, an analog output from the D/A converter is compared with an output from a PBR serving as a position detector, and a motor is driven by the difference voltage, thereby positioning the control object. In this case, control of the moving direction and drive/stop of the motor is performed by a combination between the setting states of the upper and lower limit values and the polarity of the difference voltage, and the switching operation of the selector is stopped during a control operation, thereby making it possible to smoothly perform the control operation at a high speed. The control system can be digitized as a whole by detecting a position by an encoder, and integration of the system can be enhanced, thereby realizing a compact and stable control system.
摘要翻译： 控制目标值的上限值和下限值与时钟同步地交替提供给单个D / A转换器，将来自D / A转换器的模拟输出与作为位置的PBR的输出进行比较 检测器，电机由差动电压驱动，从而定位控制对象。 在这种情况下，通过上限值和下限值的设定状态与差动电压的极性的组合来进行电动机的移动方向和驱动/停止的控制，并且选择器的切换动作在 进行控制操作，从而能够高速地平稳地执行控制操作。 控制系统可以通过编码器检测位置整体数字化，可以提高系统的集成度，从而实现一个紧凑稳定的控制系统。
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公开(公告)号：US5803355A
公开(公告)日：1998-09-08
申请号：US733935
申请日：1996-10-18
CPC分类号： B60H1/00835
摘要： A control system of automotive air conditioning device comprises a heater/cooler unit having therein a plurality of control doors by which various air flow modes are provided. A plurality of identical actuators are employed for actuating the control doors. Each actuator includes an electric motor for driving the corresponding control door, a position detector for issuing a current position signal representative of the current angular position assumed by the corresponding control door, and a control circuit for controlling the electric motor by processing both the current position signal as well as a target position signal applied thereto. A control unit is further employed for totally controlling the actuators by means of a multiplex communication carried out between the control unit and each of the actuators. The control unit issues the target position signal to each of the actuators.
摘要翻译： 一种汽车空调装置的控制系统包括：加热器/冷却器单元，其具有多个控制门，通过该控制门提供各种气流模式。 采用多个相同的致动器来致动控制门。 每个致动器包括用于驱动相应的控制门的电动机，用于发出表示由相应的控制门所假定的当前角位置的当前位置信号的位置检测器，以及控制电路，用于通过处理当前位置 信号以及施加到其上的目标位置信号。 进一步采用控制单元，通过在控制单元和每个致动器之间进行的复用通信来完全控制致动器。 控制单元向每个致动器发出目标位置信号。
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公开(公告)号：US6020708A
公开(公告)日：2000-02-01
申请号：US746348
申请日：1996-11-08
CPC分类号： G05B19/35 , G05B2219/41102 , G05B2219/41135 , G05B2219/41247 , G05B2219/42205 , G05B2219/42245
摘要： A stop range setting circuit sets a range of permissible positions around where the control object is desired to be stopped on the basis of a target position signal, and a potentio balance resistor (PBR) detects a present position of the control object driven by a motor. The comparison circuit compares the present position of the control object with the set range, and outputs an out-of-stop range signal and a rotating direction indication signal until the control object reaches the range. The out-of-stop range signal is input to a drive start determination circuit, and a drive permission signal is output to a drive circuit when the out-of-stop range signal is continuously output for at least a predetermined period of time. The drive circuit drives the motor in a direction indicated by the rotating direction indication signal while the drive permission signal is continuously output, so that an instantaneous ON/OFF signal is not input to the drive circuit in the presence of external noise.
摘要翻译： 停止范围设定电路基于目标位置信号设定控制对象期望停止的允许位置的范围，电位差平衡电阻（PBR）检测由电动机驱动的控制对象的当前位置 。 比较电路将控制对象的当前位置与设定范围进行比较，并输出停止范围信号和旋转方向指示信号，直到控制对象达到该范围为止。 停车范围信号被输入到驱动开始判定电路，并且当停车范围信号连续输出至少预定时间段时，将驱动允许信号输出到驱动电路。 驱动电路在驱动允许信号被连续输出的同时沿着由旋转方向指示信号指示的方向驱动电动机，使得在存在外部噪声的情况下，不向驱动电路输入瞬时ON / OFF信号。
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