Control system for improving induction motor transient response by excitation angle control
    43.
    发明公开
    Control system for improving induction motor transient response by excitation angle control 失效
    用于感应电动机的控制系统,以改善角度来控制兴奋瞬态行为。

    公开(公告)号:EP0150472A2

    公开(公告)日:1985-08-07

    申请号:EP84116078.1

    申请日:1984-12-21

    CPC classification number: H02P21/09 H02P21/34

    Abstract: 57 A variable frequency AC induction motor servo control system is described wherein slip is momentarily increased in response to error signal transients. In a preferred embodiment, a phase shift is introduced in the energizing stator current as the servo velocity error signal increases over at least the lower portion of the error signal range, the maximum phase shift being between 45° and 90°.

    Abstract translation: 一种可变频率AC感应电机伺服控制系统被描述worin滑移响应短时间地增加以误差信号的瞬变。 在优选实施例中,相移在激励定子电流超过至少误差信号范围内时,最大相移45°和90°之间的下部的伺服速度误差信号增加引入。

    Optical scanner
    45.
    发明公开
    Optical scanner 失效
    Optische Abtastvorrichtung。

    公开(公告)号:EP0123038A1

    公开(公告)日:1984-10-31

    申请号:EP84101585.2

    申请日:1984-02-16

    CPC classification number: G02B26/10 H04N3/09

    Abstract: A high speed optical scanning system using a circular array of concave reflectors (34, 35) on a reading disc (30) which appears in conjunction with a strip mirror (26) to achieve horizontal scanning is claimed. Such horizontal scanning can be combined with a framing mirror (20) to achieve orthogonal scanning. The system can operate in a "read" mode for scanning a scene or in a "write" mode to create a picture, or can do both modes simultaneously.

    Abstract translation: 一种高速光学扫描系统,其要求在与读取盘(30)上的凹面反射器(34,35)的圆形阵列相结合,用于实现水平扫描。 这种水平扫描可以与成帧镜(20)组合以实现正交扫描。 系统可以以“读取”模式操作,以扫描场景或以“写入”模式创建图像,或同时进行两种模式。

    Composition and process for electrodepositing a Zn or Zn/Si/P coating on metal substrates
    47.
    发明公开
    Composition and process for electrodepositing a Zn or Zn/Si/P coating on metal substrates 失效
    在金属基底上电沉积ZN或ZN / SI / P涂层的组合物和方法

    公开(公告)号:EP0171817A3

    公开(公告)日:1988-11-09

    申请号:EP85110271

    申请日:1985-08-16

    CPC classification number: C25D3/565

    Abstract: The present invention provides an aqueous composition and process for electrodepositing a layer of a ductile, strongly adhering, adsorptive and/or absorptive zinc coating or zinc coating comprising silicon and phosphorous on a metal substrate. The electrodeposition composition is prepared by reacting metallic silicon and zinc with phosphoric acid and an alkali metal hydroxide in the ratio of between 0,4 and 1,3 moles of alkali metal hydroxide per mole of phosphorus acid, and adjusting the solution to a pH of 1 or higher after completion of the reaction. The coating is deposited on the metal substrate by electrodeposition and comprises about 70 to 99,5% by weight of zinc, and about 0,1 to 10% by weight of silicon, and about 0,5 to 20% by weight of phosphorus. The resulting Zn/Si/P coating improves the resistance of the metal substrate to corrosion, wear, galling, stress corrosion cracking and cracking during mechanical forming operations. While essentially all metals of industrial importance may be coated, this process is especially important for ferrous metals, steels, stainless steels, copper, aluminium, chromium and titanium.

    Microstepping motor harmonic suppression
    50.
    发明公开
    Microstepping motor harmonic suppression 失效
    Unterdrückungder Oberschwingungen in einem Mikroschrittmotor。

    公开(公告)号:EP0242673A2

    公开(公告)日:1987-10-28

    申请号:EP87104981.3

    申请日:1987-04-03

    CPC classification number: H02K37/125 H02P8/22

    Abstract: A stepping motor including a plurality of stator poles wherein the stator poles are non-symmetrically displaced from their normal position to reduce harmonics in the torquel displacement crossing of the motor.

    Abstract translation: 一种步进电动机,其包括多个定子极,其中定子极与其正常位置不对称地移位,以减少马达的转矩位移交叉中的谐波。

Patent Agency Ranking