Electric vehicle
First Claim
1. An electric vehicle, comprising:
- a machine body;
left and right transporting parts provided on the machine body for propelling the machine body;
left and right push-button type turn switches;
left and right electric motors for respectively driving the left and right transporting parts, of which electric motors the one corresponding to whichever of the left and right turn switches is being operated during a turn will be called the motor on the inside of the turn and the other will be called the motor on the outside of the turn;
a control part for controlling the left and right electric motors; and
a hand-operated target speed adjusting member for producing a target travel speed command for the left and right electric motors, wherein the control part comprises;
inside motor deceleration pattern selecting means for, when receiving an operation signal from the left or right turn switch, selecting one deceleration pattern from among multiple different preset deceleration patterns for the motor on the inside of the turn on the basis of a target travel speed from the target speed adjusting member as of when said left or right turn switch was operated; and
inside motor deceleration control means for, only as long as said turn switch is being operated, executing deceleration control of the motor on the inside of the turn using a deceleration control value based on the selected inside motor deceleration pattern.
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Accused Products
Abstract
An electric vehicle in which left and right electric motors respectively driving left and right transporting parts are controlled by a control part and particular turning control of the electric motors is carried out when the electric vehicle turns. The electric vehicle has a left and right pair of push-button turn switches. When one of the turn switches is operated, the control part selects a pattern from multiple preset deceleration patterns and decelerates the motor on the inside of the turn, which corresponds to the turn switch being operated, on the basis of this deceleration pattern. The electric vehicle makes turns and returns to straight-line travel optimally and smoothly and can be operated easily by an operator with no skill or experience.
13 Citations
15 Claims
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1. An electric vehicle, comprising:
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a machine body;
left and right transporting parts provided on the machine body for propelling the machine body;
left and right push-button type turn switches;
left and right electric motors for respectively driving the left and right transporting parts, of which electric motors the one corresponding to whichever of the left and right turn switches is being operated during a turn will be called the motor on the inside of the turn and the other will be called the motor on the outside of the turn;
a control part for controlling the left and right electric motors; and
a hand-operated target speed adjusting member for producing a target travel speed command for the left and right electric motors, wherein the control part comprises;
inside motor deceleration pattern selecting means for, when receiving an operation signal from the left or right turn switch, selecting one deceleration pattern from among multiple different preset deceleration patterns for the motor on the inside of the turn on the basis of a target travel speed from the target speed adjusting member as of when said left or right turn switch was operated; and
inside motor deceleration control means for, only as long as said turn switch is being operated, executing deceleration control of the motor on the inside of the turn using a deceleration control value based on the selected inside motor deceleration pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electric vehicle, comprising:
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a machine body;
left and right transporting parts provided on the machine body for propelling the machine body;
left and right push-button type turn switches;
left and right electric motors for respectively driving the left and right transporting parts, of which electric motors the one corresponding to whichever of the left and right turn switches is being operated during a turn will be called the motor on the inside of the turn and the other will be called the motor on the outside of the turn; and
a control part for controlling the left and right electric motors, wherein the control part comprises;
inside motor deceleration pattern selecting means for, when receiving an operation signal from the left or right turn switch, selecting one deceleration pattern from among multiple different preset deceleration patterns for the motor on the inside of the turn on the basis of the actual speed of the motor on the inside of the turn as of when said left or right turn switch was operated; and
inside motor deceleration control means for, only as long as said turn switch is being operated, executing deceleration control of the motor on the inside of the turn using a deceleration control value based on the selected inside motor deceleration pattern. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification