发明名称 |
Motor speed control system for an electrically powered vehicle |
摘要 |
A motor speed control system for a vehicle is provided. The control system includes an electric motor connected to a power coupling element for delivering electrical energy to the motor in response to a control signal. A sensor produces a current signal in response to the magnitude of the current flowing through the motor. An accelerator pedal produces a command signal in response to a desired vehicle speed. A microprocessor receives the command signal and responsively delivers a pulse width modulated control signal to the power coupling element. The control signal has a duty cycle in a range between a minimum and predefined value. Additionally, the microprocessor receives the current signal and increases the duty cycle of the control signal by a predetermined amount beyond the predefined value in response to the received current signal.
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申请公布号 |
US5084658(A) |
申请公布日期 |
1992.01.28 |
申请号 |
US19910676026 |
申请日期 |
1991.03.27 |
申请人 |
CATERPILLAR INDUSTRIAL INC. |
发明人 |
NIELSEN, BRUCE A.;PICKERING, WILLIAM |
分类号 |
B60L11/18 |
主分类号 |
B60L11/18 |
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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