发明名称 |
Motor speed controller |
摘要 |
A control system for powering the direct current drive motor of an electric vehicle from a storage battery employs a semi-conductor switch to connect the battery to the motor. Speed control of the vehicle is achieved through operator control of an accelerator which provides an analog output voltage. A multi-vibrator provides a bi-valued output signal varying between 100% on time and 100% off time as a function of the accelerator output. The motor energizing switch is conditioned by this output and by the output of a circuit which compares the motor armature current to a reference value. The circuit includes protection elements so that the switch is opened when the armature current exceeds a preset maximum and is allowed to close again if the multivibrator is still in an "on" mode when the armature current decays below a lower preset value.
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申请公布号 |
US4162436(A) |
申请公布日期 |
1979.07.24 |
申请号 |
US19770828275 |
申请日期 |
1977.08.29 |
申请人 |
LINDSEY E WALDORF |
发明人 |
MONROE, KENNETH E;WALDORF, LINDSEY E |
分类号 |
H02P7/29;(IPC1-7):H02P5/00 |
主分类号 |
H02P7/29 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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