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1. 发明公开

EP0023677A1 Improvements in and relating to vehicle speed control systems 无效
标题翻译：车速控制系统。
公开(公告)号：EP0023677A1
公开(公告)日：1981-02-11
申请号：EP80104368.8
申请日：1980-07-24
申请人： AE PLC
发明人： Noddings, John , Borton, Roland Kenneth
IPC分类号： B60K31/00 , G05D13/62
CPC分类号： B60K31/045 , B60W2550/142
摘要： A vehicle speed control system is described in which an electrical signal (Vf) representing actual vehicle speed is compared with a stored signal (Vm) representing desired vehicle-speed. Any speed error is used in a servo loop (46, 16, 15, 10) to generate a control signal which tends to reduce the error to zero. In addition, signals (Vs, Vm) representing the actual and desired vehicle speeds are compared with a comparator (70) so as to produce a disabling signal when the difference between them falls outside predetermined positive and negative limits (e.g. because road conditions prevent the vehicle engine from driving the vehicle at or close to the desired speed). This disabling signal is used to switch the control system out of operation.

2. 发明授权

EP0023677B1 Improvements in and relating to vehicle speed control systems 无效
标题翻译：车辆速度控制系统的改进和相关
公开(公告)号：EP0023677B1
公开(公告)日：1984-04-04
申请号：EP80104368.8
申请日：1980-07-24
申请人： AE PLC
发明人： Noddings, John , Borton, Roland Kenneth
IPC分类号： B60K31/00 , G05D13/62
CPC分类号： B60K31/045 , B60W2550/142

3. 发明公开

EP0005994A1 Improvements in and relating to vehicle speed control systems 失效
标题翻译：改进相对于车辆的速度控制系统。
公开(公告)号：EP0005994A1
公开(公告)日：1979-12-12
申请号：EP79300986.1
申请日：1979-05-30
申请人： AE PLC
发明人： Noddings, John , Borton, Roland Kenneth
IPC分类号： G05D13/62 , B60K31/00
CPC分类号： F02D31/002 , B60K31/105 , F02D2200/501
摘要： A vehicle speed control system is disclosed in which a signal (Vs) representing actual vehicle speed is, when the vehicle is running at a desired speed, mementarily fed into, and then stored in, a memory (36). The memory therefore produces a signal (Vm) representing desired speed. An error amplifier (42) compares the signal (Vm) with a signal (Vf) which represents actual vehicle speed and which is derived from Vs via a filter (381. Any speed error causes a drive circuit (46) to adjust the throttle (15) of the vehicle engine (10) so as to tend to correct the vehicle speed error. The vehicle-speed-dependent signal (Vf) is derived from the actual speed of the engine (10) of the vehicle, and this signal is also fed to a comparator (50) which compares it with a reference signal (Vr) representing an upper or lower limit for engine speed. When the comparison indicates that the engine speed has exceeded the level represented by the reference Vr (e.g. when the vehicle transmission is inadvertently disconnected), a control unit (56) switches off the vehicle speed control system. If Vf is derived not from the actual speed of the engine of the vehicle but from its road speed, then a separate circuit producing an actual engine speed signal, for comparison with the engine speed limit signal Vr, may be used.

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