Ride quality simulator for railway
First Claim
1. A riding quality simulation system for railway vehicle comprising:
- a simulated passenger room simulating an interior of a railway vehicle;
a passenger room mounting table on which the simulated passenger room is mounted;
a base for supporting the passenger room mounting table;
six actuators respectively arranged along six sides of a virtual octahedron comprising, as its top face, a virtual triangle on the passenger room mounting table and, as its bottom face, a virtual triangle on the base, the six sides respectively connecting vertexes of the two virtual triangles, and the six actuators being rotatably attached, at their upper ends, to the passenger room mounting table and, at their lower ends, to the base;
a drive unit for driving each of the actuators; and
a control unit for controlling the drive unit such that oscillation or vibration in a low-frequency range along six axes, that is, an up-down axis, a left-right axis, a forward-backward axis, a yaw axis (i.e., rotary motion about the up-down axis), a pitch axis (i.e., rotary motion about the forward-backward axis), and a roll axis (i.e., rotary motion about the forward-backward axis) is applied to the simulated passenger room;
wherein control is made, by the control unit, in such a manner that, among an up-down component, a left-right component, and a forward-backward component of the vibration applied to the simulated passenger room, upper limits of vibration acceleration and frequency range of the forward-backward component are made smaller, thereby making higher upper limits of vibration acceleration and frequency range of the up-down and left-right components.
1 Assignment
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Accused Products
Abstract
To realize an accurate evaluation of the riding quality of a railway vehicle In a riding quality simulation system (1), a control unit (60) controls a drive unit (50) such that vibrations along a plurality of axes arbitrarily selected among six axes can be simultaneously applied to a simulated passenger room (10) simulating an interior of a railway vehicle. The control unit (60) makes control in such a manner that, among an up-down component, a left-right component, and a forward-backward component of the vibration applied to the simulated passenger room (10), upper limits of vibration acceleration and frequency range of the forward-backward component are made smaller, thereby making higher upper limits of vibration acceleration and frequency range of the up-down and left-right components. According to this riding quality simulation system (1), when the vibration is separated into the up-down, left-right, and forward-backward components, an extremely bad riding quality can be reproduced with respect to each component, thereby allowing an accurate evaluation of the riding quality.
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Citations
5 Claims
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1. A riding quality simulation system for railway vehicle comprising:
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a simulated passenger room simulating an interior of a railway vehicle;
a passenger room mounting table on which the simulated passenger room is mounted;
a base for supporting the passenger room mounting table;
six actuators respectively arranged along six sides of a virtual octahedron comprising, as its top face, a virtual triangle on the passenger room mounting table and, as its bottom face, a virtual triangle on the base, the six sides respectively connecting vertexes of the two virtual triangles, and the six actuators being rotatably attached, at their upper ends, to the passenger room mounting table and, at their lower ends, to the base;
a drive unit for driving each of the actuators; and
a control unit for controlling the drive unit such that oscillation or vibration in a low-frequency range along six axes, that is, an up-down axis, a left-right axis, a forward-backward axis, a yaw axis (i.e., rotary motion about the up-down axis), a pitch axis (i.e., rotary motion about the forward-backward axis), and a roll axis (i.e., rotary motion about the forward-backward axis) is applied to the simulated passenger room;
whereincontrol is made, by the control unit, in such a manner that, among an up-down component, a left-right component, and a forward-backward component of the vibration applied to the simulated passenger room, upper limits of vibration acceleration and frequency range of the forward-backward component are made smaller, thereby making higher upper limits of vibration acceleration and frequency range of the up-down and left-right components. - View Dependent Claims (2, 3, 4, 5)
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Specification