Vehicle door opening and closing control device

• US 10,000,959 B2
• Filed: 09/16/2014
• Issued: 06/19/2018
• Est. Priority Date: 09/26/2013
• Status: Active Grant

• Current Assignee: Nabtesco Corporation
• Original Assignee: Nabtesco Corporation
• Inventors: Uno, Hiroki
• Primary Examiner(s): Do, Truc M
• Application Number:
  US15/025,057
• Publication Number:
  US 20160215554A1
• Time in Patent Office: 1,372 Days
• CPC Class Codes: B61D 19/00 Door arrangements specially adapted for rail vehicles locks for vehicles E05B77/00-E05B85/00; door-operating mechanisms E05F
• CPC Class Codes: B61D 19/02 for carriages B61D19/003 takes precedence
• CPC Class Codes: E05F 15/60 using electrical actuators
• CPC Class Codes: E05F 15/635 operated by push-pull mechanisms, e.g. flexible or rigid rack-and-pinion arrangements E05F15/652 takes precedence
• CPC Class Codes: E05Y 2201/62 Synchronisation of transmission members
• CPC Class Codes: E05Y 2201/716 Pinions
• CPC Class Codes: E05Y 2201/722 Racks
• CPC Class Codes: E05Y 2400/36 Speed control, detection or monitoring
• CPC Class Codes: E05Y 2400/40 Control units therefore
• CPC Class Codes: E05Y 2900/51 for railway cars or mass transit vehicles

Abstract

A vehicle door is operated in accordance with a desired speed pattern.

A vehicle door opening-closing control device 1 includes a power-supply voltage detecting unit 2 that outputs a detection value of a power-supply voltage of an electric motor 13, a reference control pattern storage unit 3 that stores a reference control pattern that indicates a voltage command value or a speed command value for the electric motor 13, the reference control pattern is a control pattern of the electric motor when the detection value is within a predetermined range, a control pattern generating unit 4a that generates a corrected control pattern that is obtained by correcting the reference control pattern based on the detection value, and a PWM control unit 4 that controls the electric motor 13 based on the corrected control pattern.

Claims

1. A vehicle door opening-closing control device that controls opening and closing of a door of a vehicle using an electric motor, comprising:

a power-supply voltage detecting unit outputting a detection value of a power-supply voltage of the electric motor;

a reference control pattern storage unit storing a reference control pattern that indicates a voltage command value or a speed command value for the electric motor, the reference control pattern being a control pattern of the electric motor when the detection value is within a predetermined range;

a control pattern generating unit generating a corrected control pattern that is obtained by correcting the reference control pattern based on the detection value; and

a PWM control unit controlling the electric motor based on the corrected control pattern,

wherein the control pattern generating unit corrects the reference control pattern such that a value of the reference control pattern is reduced when the detection value is larger than a reference voltage value of the power-supply voltage, and corrects the reference control pattern such that a value of the reference control pattern is increased when the detection value is smaller than the reference voltage value.

2. The vehicle door opening-closing control device of claim 1, wherein the power-supply voltage detecting unit outputs a set voltage value as the detection value, the set voltage value is specified for each power-supply region between two adjacent voltage threshold values among a plurality of voltage threshold values.

3. The vehicle door opening-closing control device of claim 2, wherein each of the plurality of voltage threshold values has a lower voltage threshold value, which is equal to or smaller than the corresponding voltage threshold value, and a higher voltage threshold value, which is equal to or larger than the corresponding voltage threshold value,

wherein a hysteresis width of each of the plurality of voltage threshold values is a voltage width from the corresponding voltage threshold value to its lower voltage threshold value, and

wherein, when a detected voltage value is within the hysteresis width, the power-supply voltage detecting unit outputs, as the detection value, the set voltage value set for the power-supply region that includes a most recent voltage value from among voltage values outside the hysteresis width.

4. The vehicle door opening-closing control device of claim 1, wherein the control pattern generating unit corrects the reference control pattern by multiplying the reference control pattern by a value that is obtained by dividing the reference voltage value of the power-supply voltage by the detection value.

5. The vehicle door opening-closing control device of claim 1, wherein the power-supply voltage detecting unit outputs, as the detected value, a value based on a moving average of a voltage value.

6. The vehicle door opening-closing control device of claim 1, wherein the control pattern generating unit is configured to generate the corrected control pattern by applying a correction based on the detection valve to the reference control pattern and to store the corrected control pattern for use by the PWM.

7. The vehicle door opening-closing control device of claim 1, wherein the control pattern generating unit is configured to generate the corrected control pattern for each detection value and store the corrected control pattern to replace a prior one.