CONTROL DEVICE

• US 20120083953A1
• Filed: 09/22/2011
• Published: 04/05/2012
• Est. Priority Date: 09/30/2010
• Status: Abandoned Application

• Current Assignee: Aisin AW Company Limited (Aisin Corp.)
• Original Assignee: Aisin AW Company Limited (Aisin Corp.)
• Inventors: IZAWA, Jin, KOBAYASHI, Yasuhiko
• Application Number:
  US13/240,433
• Publication Number:
  US 20120083953A1
• Time in Patent Office: Days
• US Class Current: 701/22
• CPC Class Codes: B60K 2006/4825 Electric machine connected or connectable to gearbox input shaft
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60W 10/02 including control of driveline clutches
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/115 with planetary gears
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/40 Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers power-up or power-down of the driveline B60W30/192
• CPC Class Codes: B60W 2050/0009 Proportional differential [PD] controller
• CPC Class Codes: B60W 2050/0056 Low-pass filters
• CPC Class Codes: B60W 2510/0208 Clutch engagement state, e.g. engaged or disengaged
• CPC Class Codes: B60W 2510/081 Speed
• CPC Class Codes: B60W 2510/1005 Transmission ratio engaged
• CPC Class Codes: B60W 2510/102 Input speed change rate
• CPC Class Codes: B60W 2710/081 Speed
• CPC Class Codes: B60W 30/19 Improvement of gear change, e.g. by synchronisation or smoothing gear shift
• CPC Class Codes: B60W 30/20 Reducing vibrations in the driveline
• CPC Class Codes: B60W 50/0098 Details of control systems ensuring comfort, safety or stability not otherwise provided for
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility

Abstract

A control device capable of executing damping control of outputting a damping torque command that suppresses vibration of a rotational speed of a rotating electrical machine caused at least by elastic vibration of a power transmission mechanism. This is accomplished by using feedback control based on the rotational speed of the rotating electrical machine. The control device executes the damping control by a direct-coupling damping controller when the engagement state of the engagement device is a direct-coupling engagement state in which there is no rotational speed difference between engagement members, and executes the damping control by a non-direct-coupling damping controller different from the direct-coupling damping controller in a case where the engagement state of the engagement device is a non-direct-coupling engagement state other than the direct-coupling engagement state.

Claims

1. A control device for controlling a rotating electrical machine that is selectively drivingly coupled to an internal combustion engine in accordance with an engagement state of an engagement device, and that is drivingly coupled to a wheel via a power transmission mechanism, wherein

the control device is capable of executing damping control of outputting a damping torque command that suppresses vibration of a rotational speed of the rotating electrical machine caused at least by elastic vibration of the power transmission mechanism, by using feedback control based on the rotational speed of the rotating electrical machine, and

the control device executes the damping control by a direct-coupling damping controller in a case where the engagement state of the engagement device is a direct-coupling engagement state in which there is no rotational speed difference between engagement members, and executes the damping control by a non-direct-coupling damping controller different from the direct-coupling damping controller in a case where the engagement state of the engagement device is a non-direct-coupling engagement state other than the direct-coupling engagement state.

2. The control device according to claim 1, wherein

the direct-coupling damping controller is set in accordance with a natural frequency of a power transmission system from the internal combustion engine to the wheel, and

the non-direct-coupling damping controller is set in accordance with the natural frequency of the power transmission system from the rotating electrical machine to the wheel.

3. The control device according to claim 1, wherein

in the damping control, the control device outputs the damping torque command by the feedback control that performs at least differentiation and filtering based on the rotational speed of the rotating electrical machine, and

a control constant of the differentiation and the filtering in the direct-coupling damping controller and a control constant of the differentiation and the filtering in the non-direct-coupling damping controller are set to be different from each other.

4. The control device according to claim 1, wherein

the power transmission mechanism includes a speed change mechanism whose speed ratio can be changed, and

the respective control constants of the direct-coupling damping controller and the non-direct-coupling damping controller are changed in accordance with the speed ratio of the speed change mechanism.

5. The control device according to claim 1, wherein

the power transmission mechanism includes a speed change mechanism whose speed ratio can be changed, and

execution of the damping control is prohibited during a shifting operation of the speed ratio by the speed change mechanism.