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    • 1. 发明授权
    • Control system for dynamo electric machine operable both as a motor or as a generator with regenerative braking
    • 动力电动机的控制系统作为电动机或作为具有再生制动器的发电机可操作
    • US3544873A
    • 1970-12-01
    • US3544873D
    • 1969-05-01
    • BOSCH GMBH ROBERT
    • GUNSSER PETERRENNER STEFAN
    • H02P3/14H02P7/298
    • B60L7/12B60L11/1805H02P3/14H02P7/298H02P7/2985Y02T10/646Y02T10/648Y02T10/7005
    • 1,235,440. Control of D.C. motors; charging batteries. ROBERT BOSCH G.m.b.H. 20 June, 1969 [21 June, 1968], No. 31325/69. Headings H2H and H2J. [Also in Division G3] A shunt-wound motor 10, adapted for regenerative and rheostatic braking, is supplied from battery 13 through power thyristor 25. The motor is started by adjusting pedal 53 so that regulator 46 receives a positive signal from reference potentiometer 52 and switches-on a pulse generator 42 to fire the thyristor 25. The armature current is detected by transducer 14 which feeds back a signal to comparator 47. As the armature current increases, the regulator 46 is changed-over to switch-on the generator 43. Thyristor 29 is fired and operates through a commutating capacitor 28 to quench the thyristor 25. This action is repeated to regulate the mean armature current. The motor has a free-wheeling diode 18. The mean current through field winding 12 is kept at a maximum for starting, and is afterwards reduced in a regulated manner whereby the mean armature current is maintained at a constant value. To introduce a braking operation, the field excitation is increased and the armature passes current to the battery through choke 21 and diode 22. If the battery-voltage increases to a value at which there is a danger of gassing, a voltage regulator 54 responds and supplies a signal to comparator 47. The thyristor 25 becomes conductive and current passes through braking resistor 34 to reduce the battery-voltage. The magnitude of the total braking-current is adjustable by pedal 35, the generated current being used either to charge the battery or to heat the resistor 34, according to the state of charge of the battery. A diode 27 dispenses with the need for an interrupting switch between the points 26, 17, during braking operation. The field winding may be supplied through a further thyristor.
    • 3. 发明授权
    • Arrangement for detecting slippage of wheels of vehicles
    • 检测车辆滑行的安排
    • US3659907A
    • 1972-05-02
    • US3659907D
    • 1969-12-04
    • KLAUS CHRISTBOSCH GMBH ROBERT
    • GUNSSER PETERZECHNALL RICHARD
    • B60T8/172G01P15/00G01P15/16B60T8/08
    • B60T8/172G01P15/00G01P15/16
    • A slippage detecting system for use in conjunction with motor vehicles. Each wheel of the vehicle is provided with a transducer which supplies a voltage dependent upon the speed of the wheel. The transducer output is applied to a Schmitt-trigger circuit which becomes actuated when the voltage exceeds a predetermined value. Upon actuation of the Schmitt-trigger circuit, the braking system of the motor vehicle is operated through an amplifier, so that the braking force is regulated to prevent locking of the wheels. The transducer is in the form of a voltage generator with regulated excitation voltage. The voltage regulator includes an integrator and is connected between the output of the generator and the excitation winding thereof.
    • 一种与机动车一起使用的滑动检测系统。 车辆的每个车轮都设置有一个换能器,该换能器提供取决于车轮速度的电压。 传感器输出被施加到施密特触发电路,当电压超过预定值时,它将被激活。 在致动施密特触发电路时,机动车辆的制动系统通过放大器操作,使得制动力被调节以防止车轮的锁定。 传感器是具有调节激励电压的电压发生器的形式。 电压调节器包括积分器并且连接在发电机的输出端和其励磁绕组之间。
    • 4. 发明授权
    • Control arrangement for electric motors having a power circuit including a thyristor
    • 具有电力电路的电动机的控制装置,包括一台电动机
    • US3500161A
    • 1970-03-10
    • US3500161D
    • 1967-12-12
    • BOSCH GMBH ROBERT
    • DOMANN HELMUTGUNSSER PETER
    • B60L11/18H02P7/29H02P5/06
    • H02P7/29B60L11/1805Y02T10/646Y02T10/648Y02T10/7005Y10S388/919
    • 1,201,930. Automatic control of current. ROBERT BOSCH G.m.b.H. Dec.21, 1967 [Dec.21, 1966], No.58207/67. Heading G3R. [Also in Division H2] A control system for a D.C. motor 10, 11 (eg in stacking truck) comprises a thyristor 13 for controlling the motor current and a trigger device 37 for controlling the duty ratio of the thyristor according to the difference between a reference value and the mean value of the motor current, and a non-linear component (Zener diode) is provided which causes the thyristor to be switched off if the voltage across the motor becomes excessive. The system acts to limit the motor current, particularly during acceleration to a value set on a controller 42, but this value is opposed by a signal from a function generator 47 whose input is the motor voltage, so that an initially high value may be set for starting, which is then automatically reduced as the motor speed (and voltage) increases. The function generator comprises a transistor whose conductance varies with the motor voltage Fig. 6 (not shown). It also includes the voltage limiting feature which effectively limits the motor speed and is operative only when a stacking arm is extended. It comprises a capacitor charged by the motor voltage which, when sufficient to break down the diode, inhibits the trigger device. The system is otherwise as described in Specification 1, 201, 810 except that the second integrating circuit for the bridging contactor is not provided, and the motor is reversed by reversing the field 11.