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31.发明授权Simultaneous injection method and system for a self-balancing rotatable apparatus 失效自平衡可旋转装置的同时注射方法和系统公开(公告)号：US06532422B1
公开(公告)日：2003-03-11
申请号：US09896763
申请日：2001-06-29
IPC分类号： D06F3722
CPC分类号： D06F37/225 , G01M1/20 , G01M1/323
摘要： A method and system for balancing a rotating device or rotating system having a rotatable member and a shaft attached to the rotatable member, such that balancing is based on system response to simultaneous control actions to place mass, such as for example, fluid, at predetermined locations within the rotating system or rotating device. Mass can be simultaneously placed at predetermined locations within the rotating system. A system model of measured force and motion parameters can then be calculated in response to simultaneously placing mass at predetermined locations within the rotating system, in order to determine a required correction necessary to place the rotating system in a balanced state. Force can be measured at predetermined locations throughout the rotating system or rotating device in response to simultaneously placing the mass at the predetermined locations within the rotating system or rotating device. Motion can also be measured at predetermined locations throughout the rotating system or rotating device in response to simultaneously placing the mass at predetermined locations within the rotating system or rotating device. A matrix of measured force and motion parameters can be calculated based on independent perturbations of the rotating system. Additionally, an independence or rank criterion may be formulated to determine whether consecutive control actions are different enough from one another toexcite the system in independent directions, thereby forming a model that is sufficiently representative of the dynamics of said rotating system.
摘要翻译： 一种用于平衡旋转装置或旋转系统的方法和系统，其具有可旋转构件和连接到可旋转构件的轴，使得平衡基于系统对同时控制动作的响应，以将质量（例如流体）放置在预定 旋转系统或旋转装置内的位置。 质量可以同时放置在旋转系统内的预定位置。 然后可以响应于同时将质量放置在旋转系统内的预定位置处来计算测量的力和运动参数的系统模型，以便确定将旋转系统置于平衡状态所必需的校正。 响应于同时将质量放置在旋转系统或旋转装置内的预定位置，可以在整个旋转系统或旋转装置中的预定位置处测量力。 响应于同时将质量放置在旋转系统或旋转装置内的预定位置，也可以在整个旋转系统或旋转装置的预定位置测量运动。 可以基于旋转系统的独立扰动来计算测量的力和运动参数的矩阵。 此外，可以制定独立性或等级标准以确定连续的控制动作是否彼此不同，以便在独立的方向上激励系统，由此形成充分代表所述旋转系统的动力学的模型。
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32.发明授权Fan coil thermostat with circuitry to assure minimum power for relay pull-in 失效风扇盘管恒温器，具有确保继电器拉入功率最小的电路
公开(公告)号：US5460221A
公开(公告)日：1995-10-24
申请号：US304023
申请日：1994-09-09
CPC分类号： F24F1/0007 , F24D19/1009 , G05D23/1909 , G05D23/24 , F24F11/0079 , Y02B30/746
摘要： A thermostat capable of accommodating primary and secondary loads is taught. Preferably a hydronic valve actuator is the primary load and a fan coil of variable speed is the secondary load. Temperature sensing is electronic and both heating and cooling as well as multiple fan modes are accommodated.
摘要翻译： 教导了能够容纳一次和二次负载的恒温器。 优选地，水力循环阀致动器是主要负载，并且可变速度的风扇盘管是次级负载。 温度检测是电子式的，并且采用加热和冷却以及多种风扇模式。
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公开(公告)号：US5196775A
公开(公告)日：1993-03-23
申请号：US658482
申请日：1991-02-20
CPC分类号： H02P6/185 , H02P25/089
摘要： A apparatus is provided for estimating the position of a rotor of a commutated brushless motor operating without a shaft position sensor. The apparatus includes a tank circuit that incorporates a phase winding of the motor. A low-power signal of a frequency F.sub.1 is injected into the tank circuit. The frequency F.sub.1 is much greater than the switching frequency F.sub.s of the phase winding. Because the effective inductance (L) of the phase winding incorporated into the tank circuit changes in a cyclic manner in response to changes in the mechanical angle .THETA. of the rotor, the characteristic resonant frequency F.sub.0 of the tank circuit varies between maximum and minimum values. The effect of the variation of the resonant frequency F.sub.0 on the output characteristics of the tank circuit are used by a detection circuit to resolve the mechanical angle .THETA. of the rotor and, thereby, control the timing of the phase firing sequence. The two illustrated embodiments detect changes to the amplitude and phase, respectively, of the signal from the tank circuit in response to the changing inductance of the phase winding incorporated into the tank circuit.
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