Method of and apparatus for controlling vehicle speed
First Claim
1. A method of controlling vehicle speed, wherein a pulse generator outputting pulses in connection with the movement of a vehicle is provided on said vehicle, and a speed instruction is given to a vehicle driving unit so that said vehicle runs at a setup speed on the basis of the result of the counting of said output pulses, said method comprising the sequential steps of:
- detecting a predetermined travel distance;
counting the number of pulses which are outputted while detecting said predetermined travel distance;
calculating travel distance per a predetermined number of pulses on the basis of the counted number of pulses;
computing the number of pulses to be outputted in a predetermined period of time on the basis of the calculated travel distance and the setup speed at the moment of computing said number of pulses;
detecting the number of actually outputted pulses in said predetermined period of time; and
giving the instruction of moving speed of said vehicle relevant to the difference between the computed number of pulses and the number of actually detected pulses.
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Accused Products
Abstract
A method of and an apparatus for controlling the moving speed of a vehicle, which makes a vehicle run at a constant speed independent of applied load by specifically instructing the moving speed according to the difference between the computed number of pulses and the actually detected number of pulses. The vehicle moving speed is properly controllable in correspondence with load applied to the moving vehicle. The apparatus includes a pulse generator which outputs pulses relative to the movement of the vehicle, a unit pulse calculation unit which counts the number of pulses outputted while the vehicle fully passes through a predetermined travel distance and then computes either the traveling distance per unit-pulses or the number of pulses per unit distance, a predetermined position operation unit which computes the number of pulses to be outputted in a specific period of time in which the vehicle from an optional position arrives at the predetermined position after elapse of the predetermined period of time on the basis of the computed number of outputted pulses and the setup speed at the moment of computing the number of pulses, and a present position computing unit which detects the number of pulses actually outputted in a predetermined period in which the vehicle from an optional position arrives at the predetermined position after elapse of a predetermined period of time, respectively.
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Citations
20 Claims
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1. A method of controlling vehicle speed, wherein a pulse generator outputting pulses in connection with the movement of a vehicle is provided on said vehicle, and a speed instruction is given to a vehicle driving unit so that said vehicle runs at a setup speed on the basis of the result of the counting of said output pulses, said method comprising the sequential steps of:
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detecting a predetermined travel distance; counting the number of pulses which are outputted while detecting said predetermined travel distance; calculating travel distance per a predetermined number of pulses on the basis of the counted number of pulses; computing the number of pulses to be outputted in a predetermined period of time on the basis of the calculated travel distance and the setup speed at the moment of computing said number of pulses; detecting the number of actually outputted pulses in said predetermined period of time; and giving the instruction of moving speed of said vehicle relevant to the difference between the computed number of pulses and the number of actually detected pulses. - View Dependent Claims (2, 3, 4, 5)
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6. A method of controlling vehicle speed, wherein a pulse generator outputting pulses in connection with movement of a vehicle is provided on said vehicle, and a speed instruction is given to a vehicle driving unit so that said vehicle runs at a setup speed on the basis of the result of the counting of said output pulses, said method comprising the sequential steps of:
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detecting a predetermined travel distance; counting the number of pulses which are outputted while detecting said predetermined travel distance; calculating the number of pulses per unit distance on the basis of the counted number of pulses; computing the number of pulses outputted in a predetermined period of time on the basis of the calculated number of pulses and the setup speed at the moment of computing the number of pulse per unit distance; detecting the number of actually outputted pulses in said predetermined period of time; and giving the instruction of moving speed of said vehicle relevant to the difference between the computed number of pulses and the detected number of pulses. - View Dependent Claims (7, 8, 9, 10)
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11. A vehicle speed controlling apparatus which is provided with a pulse generator outputting pulses in connection with movement of a vehicle and gives an instruction so that said vehicle runs at the setup speed according to the result of the counting of the output pulses, said apparatus comprising:
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predetermined travel distance detecting means for detecting a predetermined travel distance; pulse counting means for counting the number of pulses outputted while said predetermined travel distance detecting means detects the predetermined travel distance; unit travel distance calculating means for calculating traveling distance per a predetermined number of pulses on the basis of the number of pulses counted by said pulse counting means; pulse number computing means for computing the number of pulses outputted in a predetermined period of time on the basis of the travel distance calculated by said unit travel distance calculating means and the speed set up at the moment of computing said number of pulses; pulse number detecting means for detecting the number of pulses actually outputted in said predetermined period of time; pulse number difference computing means for computing the difference between the number of pulses computed by said pulse number computing means and the number of pulses detected by said pulse number detecting means; and means for giving the instruction of the vehicle speed relevant to the difference of the number of pulses computed by said pulse number difference computing means. - View Dependent Claims (12, 13, 14, 15)
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16. A vehicle speed controlling apparatus which is provided with a pulse generator outputting pulses in connection with movement of a vehicle and gives an instruction so that said vehicle runs at the setup speed according to the result of the counting of the outputted pulses, said apparatus comprising:
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predetermined travel distance detecting means for detecting a predetermined travel distance; pulse counting means for counting the number of pulses outputted while said predetermined travel distance detecting means detects the predetermined travel distance; unit pulses calculating means for calculating the number of pulses per unit distance on the basis of the number of pulses counted by said pulse counting means; pulse number computing means for computing the number of pulses outputted in a predetermined period of time on the basis of the number of pulses computed by said unit pulses calculating means and the setup speed at the moment of computing the number of pulses; pulse number detecting means for detecting the number of pulses actually outputted in said predetermined period of time; pulse number difference computing means for computing the difference between the number of pulses computed by said pulse number computing means and the number of pulses detected by said pulse number detecting means; and means for giving the instruction of the moving speed of said vehicle relevant to the difference of the number of pulses computed by said pulse number difference computing means. - View Dependent Claims (17, 18, 19, 20)
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Specification